The Mission

We provide Information Security and Compliance services, helping our clients build secure, audit-ready systems. We are looking for a Security Engineer who can ensure the security of our clients’ projects and who can support Software Engineers working on them.

We want to bridge the gap between high-level compliance frameworks (SOC 2, ISO 27001, GDPR) and actual technical solutions. You will be working directly on our clients’ infrastructure and pipelines, ensuring that security isn’t just a policy on paper, but a functional part of the codebase.

The Commitment & Scalability

• Initial Engagement: Roughly 5-10 days per month.
• Flexibility: The role is fully compatible with other engagements or a part-time schedule until we scale.
• The Long Game: Ideally, this role is designed to evolve into a permanent, full-time position as our client base grows.
• Flexibility: Remote-first with flexible hours. You own your schedule, provided you are available for occasional remote client meetings during standard weekday hours.

Your Core Responsibilities

You will be the primary technical contact for our clients’ security and engineering needs:

• Scanning & Identification: Setting up and managing automated vulnerability scanning tools (SAST/DAST/SCA) within the development lifecycle.
• Risk Assessment: Analysing scan results to distinguish between theoretical risks and exploitable vulnerabilities within the context of the client’s specific architecture.
• Patching: Implementing the fixes for vulnerabilities and issues, and coordinating with development teams to prioritise and schedule patches without breaking production environments.
• Attack Surface Reduction: Periodically reviewing exposed assets and configurations to proactively identify and close potential entry points.
• Operational Security: Managing ongoing technical tasks such as log reviews, access audits, and incident response preparation.
• Control Validation: Performing technical “proof-of-concept” validations to ensure clients remain audit-ready.
• Security as Code: Writing and maintaining CI/CD pipelines and Infrastructure as Code (Terraform/CloudFormation) to ensure security controls are automated and “baked in” to the deployment process.
• Cloud Security Engineering: Hardening client Cloud Environments (primarily AWS) through direct technical implementation (IAM least privilege, VPC configuration, Encryption, and Logging).
• Compliance Translation: Taking “dry” requirements from SOC 2 or ISO 27001 and translating them into technical reality for modern development teams.

What We’re Looking For

We are looking for a builder who is passionate about security. You might already be a Security Engineer, or you might be a Senior Software Engineer who has spent years focusing on security.

• The Engineering Background: You have a solid foundation in software engineering. You understand how developers work because you are one.
• Programming Expereince: Preferably, you should have experience with one of the more common programming languages such as Python or TypeScript, but other are acceptable as well.
• Security Practitioner: You are either currently working as a Security Engineer or can demonstrate significant “on-the-job” security experience within a dev role.
• Infrastructure Familiarity (AWS): You are comfortable making direct changes to cloud environments. While deep AWS expertise is a “nice to have,” the ability to learn and apply security principles to cloud infrastructure is essential.
• Pipeline Literacy: You understand CI/CD (GitHub Actions, AWS CodePipeline, etc.) and how to integrate security tooling into the developer workflow.
• Compliance Savvy: You understand the “Why” behind frameworks like ISO 27001 or GDPR and enjoy the challenge of making them work in a high-velocity dev environment.
• Ownership Mentality: We are a small, ambitious company. We need someone who takes initiative and wants to grow into a foundational leadership role.

Why Join Us?

You’ll get to work across various stacks and help different companies solve security problems. You’ll also have a direct hand in shaping our service offerings and technical roadmap. If you want a role where you aren’t just a “checker” but a “builder,” we want to talk.

Software Engineer / Developer (JavaScript / TypeScript Node) Remote UK to £50k

Would you like to work on complex and interesting AI based systems with a team of tech entrepreneurs?

You could be joining a growing start-up that is utilising Machine Learning and AI technology to revolutionise fish farming, improving fish health and growth; their carbon neutral technology is already making a difference in Scotland, Chile, Canada, Australia, Spain and Norway and the company has ambitious growth plans.

As a Software Engineer you will work on a range of projects across the technology stack, primarily using JavaScript / TypeScript and Node.js (with React on the front end). You’ll be developing software solutions that will be used by farms globally, building complex backend systems as well as developing data visualisations and dashboards that transform real time data from the IoT platform into actionable insights.

There are excellent career progression opportunities as the company continues to scale; you’ll be an integral part of a small, distributed team.

Location / WFH:

You can work from home remotely from anywhere in the UK, there is also flexibility to work abroad for periods throughout the year and flexible start and finish times. There are two company ‘kick-off’ meetings per year at great destinations for a week at a time.

About you:

You have strong JavaScript / TypeScript skills

You also have experience of using Node

You’re proactive, keen to contribute ideas and continually develop your skills

You’re able to work independently whilst collaborating with a remote, international team in an Agile environment

You’re likely to be degree educated in a STEM discipline

What’s in it for you:

Salary to £50k

Remote working (including abroad)

Paid for training and certifications

Home office budget

Bi-annual company kick-offs

Pension

Apply now to find out more about this Software Engineer / Developer (JavaScript / TypeScript Node.js) remote opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We’re an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

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We are seeking a talented and motivated Frontend Developer with strong expertise in TypeScript to join our growing development team. In this role, you will work on building high-quality, scalable, and responsive web applications using React and TypeScript. You will collaborate closely with cross-functional teams to deliver exceptional user experiences, optimize performance, and contribute to the overall architecture of our platform.

Initially it will be a six-month contract but there is potential for it to be extended. The role is Hybrid, with one day a week being based in their London office. It is a full-time role, 40 hours per week.

Accountabilities:

• Develop and maintain scalable and responsive web applications using React.js and TypeScript.
• Collaborate with UX/UI designers to implement modern, intuitive, and visually appealing user interfaces.
• Write clean, maintainable, and efficient code while adhering to best practices.
• Optimize applications for maximum performance across a wide range of devices and browsers.
• Participate in code reviews and maintain a high level of code quality.
• Troubleshoot and debug issues in both development and production environments.
• Contribute to architectural decisions and collaborate with other engineers on overall application design.
• Ensure the scalability and security of applications by following best development practices.
• Stay up-to-date with emerging technologies and industry trends, integrating new tools and libraries into the project as appropriate.
• Work with version control systems like Git and ensure continuous integration and deployment processes are followed.
• Collaborate with back-end developers to integrate RESTful APIs and handle data flow effectively.

Knowledge and Skills:

• Proven experience in React.js and TypeScript development.
• Strong understanding of JavaScript and modern front-end technologies.
• Experience with state management libraries like Redux, Recoil, or similar.
• Familiarity with RESTful APIs
• Experience with version control systems, such as Git.
• Solid understanding of web development fundamentals: HTML, CSS, and responsive design.
• Strong debugging skills and the ability to troubleshoot performance issues.
• Ability to write clean, modular, and well-documented code.
• Strong communication skills and the ability to collaborate effectively in a team-oriented environment.

Rullion celebrates and supports diversity and is committed to ensuring equal opportunities for both employees and applicants.

We have a current opportunity for a React Developer on a permanent basis. The position will be based in London. For further information about this position please apply.

The Opportunity

The ETrading Terminal is the interface through which professional traders and institutions access the world’s most important commodity market - live, with depth and precision no competitor can match. You will own the architecture of that experience. This is not a UI layer on top of a data API. It is a real-time, high-throughput trading interface used by some of the most demanding users in financial markets. You will define how it is built, set the patterns the team follows, and push the boundaries of what a browser-based trading platform can do.

Requirements

• 10+ years engineering; 5+ years building production React at scale - component lifecycle, rendering behaviour, and bundle architecture are instincts
• TypeScript mastery in strict mode - complex generics, discriminated unions, conditional types, and type-safe API boundary design
• Vite and modern build tooling; tree-shaking, chunk strategy, module federation, and build performance optimisation in CI
• State management at scale: Zustand, TanStack Query, or equivalent; separation of server, client, and ephemeral UI state
• High-frequency WebSocket data at tick-by-tick rates - back-pressure handling, dropped-frame detection, and reconnection strategy
• Browser internals: rendering pipeline, layout/paint/composite lifecycle, memory profiling, GC pressure, and long-task detection
• WebGL, Canvas, or custom rendering engine for high-density, real-time financial data visualisation
• Design system ownership - token architecture, component API design, versioning strategy, and cross-team adoption at scale
• Testing discipline: unit, integration, E2E (Playwright/Cypress), visual regression, and performance budget enforcement in CI
• GraphQL or REST API co-design with backend teams; schema-first development and automated type generation
• Track record of measurably improving engineering standards - patterns or tooling adopted org-wide
• Cloud infrastructure - Azure preferred, AWS considered; IAM, managed services, automated and auditable deployment pipelines, secrets management

Nice to Have

• Trading UI experience (any asset class) - order books, depth ladders, RFQ workflows, option chains, or execution blotters
• Micro-frontend architecture at scale; WASM integration for performance-critical in-browser computation
• High-frequency streaming data; managing back-pressure and dropped-frame rendering under sustained load
• Financial services or capital markets front-end background; familiarity with market data normalisation

What We’re Looking For

You are the engineer others come to when they do not know what is possible - and you show them. The ETrading Terminal is seen by the world’s most sophisticated market participants. You take that personally, ship things that are fast and resilient, set a standard others aspire to, and treat innovation not as a project but as how you approach every ticket.

To find out more about Huxley, please visit (url removed)

Huxley, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy Registered office 8 Bishopsgate, London, EC2N 4BQ, United Kingdom Partnership Number OC(phone number removed) England and Wales

Founding Engineer (EnergyTech / AI)

London Hybrid (3 days onsite) 70k- 120k + Equity

A venture-backed EnergyTech start-up is building a new type of power company designed for the electrified future.

As renewable energy adoption accelerates, the challenge is no longer just generating power, but storing, managing, and intelligently dispatching it. This team is developing software that sits at the centre of that transition, enabling a new generation of energy suppliers built around flexibility, storage, and intelligent automation.

Backed by leading investors and founded by operators with experience from some of the most respected names in the European energy ecosystem, the business has already launched its first product and is growing rapidly month-on-month. The next phase is building the core technology platform that will power a fully integrated energy supplier launching later this year.

This is an opportunity to join a small, highly capable engineering team building core infrastructure for a next-generation energy platform.

The Role

You will work across the full product stack, helping design and build the systems that power both the customer experience and the operational backbone of the platform.

Engineers here take ownership of problems end-to-end, from shaping early ideas through to delivering production features used by customers.

Responsibilities include:

• Building full-stack product features across web, backend services and data systems
• Designing APIs and integrating with hardware and energy data platforms
• Developing AI-enabled capabilities, including LLM-powered workflows and operational tooling
• Contributing to core supplier infrastructure such as billing systems, operational tooling, and internal platforms
• Working closely with founders and customers to shape the product direction

Tech Stack

• Frontend: React, React Native, TypeScript
• Backend: Python, FastAPI, PostgreSQL
• Infrastructure: GCP, Terraform, Airflow
• AI: LLM integrations and AI-driven automation

What They’re Looking For

• Experience as a Full-Stack Engineer building production systems
• Strong engineering fundamentals and the ability to work across backend and frontend systems
• Comfort operating in a fast-moving start-up environment where priorities evolve quickly
• A proactive mindset with a bias towards ownership and solutions
• Interest in the energy transition or climate technology is a strong plus

Engineers who thrive here tend to enjoy working close to the problem, communicating clearly across technical and non-technical teams, and taking initiative rather than waiting for direction.

Package

• 70k- 120k salary depending on experience
• Meaningful equity
• Private health insurance
• Meal allowance and team dinners
• Hybrid working (London office 3 days per week)

Core responsibilities of the role are:

• Provide technical leadership, coaching and mentoring to your assigned team
• Promote knowledge sharing and adoption of good practice
• Guide the ways in which the team works
• Be involved in identifying appropriate technology and approaches, deciding when software should be written
• Contribute to the wider MHCLG developer community
• Providing quality assurance of inflight tickets
• Release preparation
• Show and tells and demonstrations

Tech stack:

• Typescript on NodeJS
• AWS Cloudwatch, Lambda, SQS, S3, RDS and DDB
• Terraform
• PostgreSQL
• Scala/Java
• Jira, Slack, Teams and Figma (Collaboration tooling)

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

An established financial insititution is seeking a SharePoint / Microsoft 365 Solutions Developer to support the continued development of its digital collaboration and document management platforms. This role will sit within a modern Microsoft technology environment and contribute to the design and delivery of scalable solutions across internal systems and collaboration platforms.

The successful candidate will work closely with internal development teams and stakeholders to build secure, efficient and user-focused SharePoint and Microsoft 365 solutions that support document management, workflow automation and system integration.

Key Responsibilities

• Design and develop solutions using SharePoint Online and the SharePoint Framework (SPFx)
• Build custom components, web parts and integrations within Microsoft 365
• Develop and maintain workflow automation using Power Platform tools such as Power Automate and Power Apps
• Integrate SharePoint solutions with internal systems and APIs
• Support governance, security and data management best practices across collaboration platforms
• Work within an Agile development environment contributing to sprint planning, development and testing
• Collaborate with backend and frontend developers to deliver integrated enterprise solutions
• Assist with the ongoing optimisation and improvement of existing collaboration platforms

Required Skills and Experience

• Experience developing solutions within SharePoint Online environments
• Experience with SharePoint Framework (SPFx) development
• Knowledge of Microsoft 365 development tools and APIs
• Experience with Power Platform technologies (Power Apps and Power Automate)
• Strong understanding of REST API integration
• Experience working with JavaScript or TypeScript and modern web development practices
• Understanding of secure development and enterprise collaboration environments

Desirable Experience

• Experience with C# and .NET-based services
• Experience integrating Microsoft Azure services
• Familiarity with modern front-end frameworks such as Angular or React
• Experience working in regulated or enterprise technology environments

Working Environment

This role sits within a collaborative Agile development environment and will involve working alongside experienced developers, platform specialists and internal stakeholders to deliver robust, enterprise-grade solutions.

The position offers hybrid working with a combination of office-based collaboration and remote flexibility.

C++ Engineer Certain Advantage are hiring for a C++ Engineer based in London. This role is on an initial contract till the end of the year and is hybrid. The company We’re working with an organisation that operates globally, helping power homes, transport, and industries with the energy they depend on every day. The role: Implement solutions using the provided exchange SDKs in different languages such as C++, Rust, Python, Typescript Write software that communicates with exchanges through their APIs, receiving market data and sending orders over the network in different protocols, such as FIX, Websocket or HTTP requests Optimize exchange communication through kernel bypass, optimizing TLS or the connection handling to an exchange Implement trading algorithms based on requirements provided by traders and quants Acquire and develop the necessary trading knowledge to successfully translate the requirements into actual software implementation Continuously improve the stability, reliability, and performance of the trading engine Enhance monitoring and observability in collaboration with the Trading Operations team The individual: C++ software development experience within the financial industry Solid understanding of parallel, asynchronous, and multithreaded programming to build distributed systems Good knowledge of algorithms and data structures Understanding of trading lifecycle, including order capture & execution, allocation workflow, settlement, and compliance requirements Must have strong technical skills in scripting, Python, C#, SQL or other programming languages Proactive system monitoring and troubleshooting, owning reliability improvements and ensuring their successful delivery Does this sound like your next career move? Apply today. Working with Certain Advantage We go the extra mile to find the best people for the job. If you’re hunting for a role where you can make an impact and grow your career, we’ll work with you to find it. We work with businesses across the UK to find the best people in Finance, Marketing, IT and Engineering. If this job isn’t for you, head to (url removed) and register for job alerts and career guidance tips

Senior Software Engineer - AI SaaS Platform London (Hybrid - 2 days onsite) £90,000 - £110,000 + bonus + benefits A high-growth B2B generative AI scale-up based in central London is looking for a Senior Software Engineer to help build the next generation of its AI-powered SaaS platform. Working within a fast-moving product engineering team, you will play a key role in designing and delivering new features that enhance how customers interact with AI-driven software. This is a product-led environment where engineers collaborate closely with product managers and designers to ship high-impact features and continuously improve the platform. This role would suit an experienced engineer who enjoys building scalable systems, working across the full stack, and contributing to a product used by real customers. Key Responsibilities Design and deliver scalable features within a modern SaaS platform Build reliable backend services and customer-facing functionality Work closely with Product Managers and Designers to refine requirements and deliver solutions Contribute to system design, architecture discussions and engineering best practices Support the reliability and scalability of live production systems Required Experience Strong TypeScript / Node.js development experience Experience building full-stack applications (React / Next.js) Experience delivering cloud-based products in AWS, GCP or Azure Infrastructure knowledge such as Terraform, Docker, Kubernetes or CI/CD pipelines Experience working in startup or scale-up environments A product mindset with strong collaboration across engineering, product and design teams Nice to Have Experience using Python within product development Exposure to AI / LLM-driven products Experience with microservices architectures What’s on Offer £90,000 – £110,000 base salary Bonus scheme Hybrid working (2 days per week in London) Flexible working hours Private healthcare & pension Strong progression opportunities within a high-growth AI scale-up The opportunity to work on cutting-edge AI products used by global customers If you are a Senior Software Engineer looking to work on impactful AI-driven products in a fast-growing scale-up, apply now for more information

Senior Full-Stack Engineer / Software Developer / JavaScript Engineer (Node.js / React / Next.js – AWS Serverless) London (Hybrid – Farringdon Tues/Weds/Thurs) £85k–£90k + Bonus + Excellent Benefits Discretionary bonus (10%), Private Healthcare, 25 Days holiday, 5% pension, Life Insurance, 2 Volunteering days a year, Season Ticket Loan Do you love solving complex problems and building products real people rely on every day? This well-established company has spent 25 years helping some of the world’s most iconic music and media brands tell their stories. With a team of 140 and a deep commitment to craftsmanship, they create stable, high-quality products that professionals actually depend on. We’re particularly interested in engineers who enjoy owning both the frontend experience and the Node.js APIs behind it. You’re a thoughtful, solutions-driven engineer who cares about architecture, performance, scalability, and long-term product impact. You don’t just close tickets, you take ownership, think systemically, and write clean, maintainable code across the entire stack. Collaboration is second nature. You enjoy pairing, knowledge sharing, and healthy technical debate, plus you’re curious about tooling, infrastructure, and how AI can enhance your workflow. The Role: You’ll join a small, cross-functional team spanning product, design, research, engineering, and operations. It’s a flat structure built on shared ownership and trust, with real influence over what gets built and how. You’ll work across the full stack, building polished frontend experiences while also designing and developing Node.js APIs and backend services that power them. Key areas of work include: \* Building modern frontend applications with React and Next.js \* Designing and developing Node.js APIs \* Creating scalable backend services within AWS serverless architecture \* Solving complex workflow and discovery challenges \* Improving performance, reliability, and system scalability \* Collaborating closely with product, design, and research teams What Success Looks Like: Within your first 6–12 months, you will have: \* Delivered production-ready Node.js APIs supporting key product workflows \* Shipped high-quality React / Next.js features used by customers every day \* Contributed to architecture decisions across frontend and backend services \* Improved performance and reliability of key product areas \* Helped shape engineering practices around code quality, testing, and maintainability Tech Stack: \* TypeScript / JavaScript \* Node.js (API development) \* React, Next.js \* AWS Serverless (Lambda, API Gateway) \* Vercel \* SQL Server \* Algolia \* CI/CD (TeamCity) You Might Be a Good Fit If: \* You’re a JavaScript / TypeScript engineer who enjoys working across the full stack \* You have experience building Node.js APIs or backend services \* You enjoy building clean, performant React / Next.js applications \* You care about architecture, maintainability, and product quality \* You enjoy collaborating closely with design, product, and engineering teams What You’ll Find: \* A thoughtful, craft-led engineering culture \* Time to make sound architectural decisions \* Close collaboration with product and design \* Genuine ownership and accountability \* A stable, commercially established business delivering real impact in music and media This isn’t “move fast and break things.” It’s about building well, sustainably, and responsibly while solving complex, meaningful technical problems. If you’re a Senior JavaScript engineer who enjoys building both great user experiences and the APIs behind them, apply now or contact Simon Morris at Ithika Recruitment for a detailed discussion. Ithika Recruitment — partnering world-class talent with world-class companies

Data Engineer

Salary: £40 - 72K + Benefits
Location: London or Manchester (aligned to office for client on-site requirements)
Working Pattern: Hybrid / On-site depending on client needs
Security Clearance: SC Clearance required

You will join a people-focused digital consultancy supporting data-driven services across the UK public sector. The organisation values collaboration, inclusion, and work-life balance, and actively supports continuous learning and professional development through access to training, modern engineering tools, and supportive multidisciplinary teams.

The consultancy works closely with government departments and public sector organisations to design, build, and operate secure, scalable data platforms that enable advanced analytics, data science, and machine learning. Diversity and inclusion are core values, and hiring decisions are based on skills, experience, and potential. Empowering individuals and building strong teams are central to delivering meaningful outcomes for clients and citizens.

This role is suited to Data Software Engineers with a strong technical foundation and an interest in data engineering, data science, and machine learning. You will work within agile, multidisciplinary teams alongside data scientists, platform engineers, and stakeholders to build robust data processing systems in secure environments.

Role Responsibilities

Design, build, and maintain scalable data processing and integration systems to support data science and analytics workloads.

Develop high-quality, well-tested software using a Test-Driven Development (TDD) approach.

Collaborate closely with data scientists to enable effective use of data for analytics and machine learning.

Build and operate cloud-based solutions, with a strong focus on AWS services.

Work with messaging, streaming, or data flow technologies to support real-time and batch data processing.

Contribute to infrastructure and platform automation using Infrastructure as Code.

Participate in agile ceremonies, technical design discussions, and code reviews.

Ensure solutions meet security, performance, and reliability requirements within public sector environments.

What You Will Bring to the Team

A strong interest in data, particularly data engineering, data science, or machine learning.

A solid technical background, with experience in Java, Python, TypeScript, or similar languages.

Experience developing software using TDD or a strong willingness to adopt TDD practices.

Strong problem-solving skills and the ability to work collaboratively within multidisciplinary teams.

Good communication skills, with the ability to explain technical concepts to both technical and non-technical stakeholders.

A proactive mindset with attention to detail and a commitment to quality.

Desirable Skills and Experience

Experience working with cloud platforms, ideally AWS.

A strong Linux background.

Experience with data integration and messaging technologies such as Apache NiFi, Apache Kafka, RabbitMQ, or similar tools.

Experience using Infrastructure as Code tools such as Terraform or CloudFormation.

Previous experience working in a consultancy or public sector delivery environment.

Familiarity with secure or regulated environments.

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Senior .Net Developer | Full Stack Engineer - Build the Future of Data Lineage & AI

London (Hybrid) | High -I mpact SaaS Engineering Role

C#, ASP.Net Core, TypeScript, React, Computer Science

Company Size: Approx. 60

Salary Range : £75k-£95k + equity

Spectrum Recruitment is partnered with a fast-growing, venture-backed SaaS company helping organisations understand and control complex data flows. Their platform enables enterprises to model, visualise, and manage data lineage, bringing clarity to some of the most challenging problems in modern data environments.

Why are they hiring?

Product Demand | Scale | Increasing team capabilities

As demand for the product increases and market interest builds the team needs greater experience and capabilities for scale. The current team is primarily made up of very clever graduates from ICL led by an experienced Head of Tech. They are looking for Developers to help the team evolve, add rigor and depth of knowledge to take the team and company to the next level.

Why This Role Stands Out

Work on genuinely complex engineering problems involving data modelling, visualisation, and emerging AI capabilities.

Own meaningful product features in a small, highly skilled engineering team.

Use a modern technology stack with freedom to innovate and influence technical direction.

Join a collaborative culture with R&D time, knowledge sharing, and hackathons.

Technology

C#, .NET Core, ASP.NET Core, TypeScript, React, cloud-hosted SaaS architecture, and exposure to AI-assisted development and data visualisation.

Who This Would Suit

Established, Senior Engineers who enjoy solving complex problems, care about clean architecture and UX, and want a role where their work has visible impact on both product and customers.

A degree in Computer Science or Software Engineering is a must.

Environment & Culture

Hybrid working (usually two days per week in a central London office) alongside a collaborative and ambitious engineering team. A friendly, sociable culture where people genuinely enjoy working together to solve complex challenges and have fun while doing it. You’ll also have clear opportunities to learn, develop, and influence the future direction of the technology and team.

Interested?

If you’re an experienced developer looking for a technically interesting role where your work genuinely matters, this is worth a conversation.

Hit apply or contact for more info.

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

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Senior .Net Developer | Full Stack Engineer - Build the Future of Data Lineage & AI London (Hybrid) | High‑Impact SaaS Engineering Role C#, ASP.Net Core, TypeScript, React, Computer Science Company Size: Approx. 60 Salary Range: £75k-£95k + equitySpectrum Recruitment is partnered with a fast-growing, venture-backed SaaS company helping organisations understand and control complex data flows. Their platform enables enterprises to model, visualise, and manage data lineage, bringing clarity to some of the most challenging problems in modern data environments. Why are they hiring? Product Demand | Scale | Increasing team capabilities As demand for the product increases and market interest builds the team needs greater experience and capabilities for scale. The current team is primarily made up of very clever graduates from ICL led by an experienced Head of Tech. They are looking for Developers to help the team evolve, add rigor and depth of knowledge to take the team and company to the next level. Why This Role Stands Out Work on genuinely complex engineering problems involving data modelling, visualisation, and emerging AI capabilities. Own meaningful product features in a small, highly skilled engineering team. Use a modern technology stack with freedom to innovate and influence technical direction. Join a collaborative culture with R&D time, knowledge sharing, and hackathons.Technology C#, .NET Core, ASP.NET Core, TypeScript, React, cloud-hosted SaaS architecture, and exposure to AI-assisted development and data visualisation. Who This Would Suit Established, Senior Engineers who enjoy solving complex problems, care about clean architecture and UX, and want a role where their work has visible impact on both product and customers. A degree in Computer Science or Software Engineering is a must. Environment & Culture Hybrid working (usually two days per week in a central London office) alongside a collaborative and ambitious engineering team. A friendly, sociable culture where people genuinely enjoy working together to solve complex challenges and have fun while doing it. You'll also have clear opportunities to learn, develop, and influence the future direction of the technology and team. Interested? If you're an experienced developer looking for a technically interesting role where your work genuinely matters, this is worth a conversation. Hit apply or contact for more info. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy

Machine Learning Engineer (PyTorch LLM) London onsite to £110k

Do you have expertise with Machine Learning in production?

You could be progressing your career at a London based tech start-up with £5 million in recent pre-seed funding, in an impactful role that you’ll shape. The product is an AI agentic based platform that writes production grade code.

What’s in it for you:

Salary to £110k

Equity / stack options

30 days holiday (+ Bank Holidays)

Daily lunch, monthly breakfasts

Dog friendly office

Pension

Monthly socials

Impactful role that you can shape and influence

Your role:

As a Machine Learning Engineer you’ll take open-source LLMs (code and general models) and turn them into high-performance software engineer agents using supervised fine tuning and large scale reinforcement learning. This isn’t prompt engineering. You’ll design and run serious training experiments across multi-node GPU clusters, build RL loops where models write code and get rewarded (or penalised) by real test outcomes and push long-context and MoE style architectures to their limits.

You’ll work hands-on across the full stack: custom PyTorch dataloaders, distributed training (DDP/FSDP), experiment tracking, debugging NCCL issues at 2am, and squeezing performance out of multi-GPU jobs. You’ll help design opinionated reward functions that reflect what great engineering actually looks like, not just benchmark scores.

You’ll extend benchmark suites, test models on real world repositories, analyse failure modes and feed insights back into data and training strategy. Collaborating with infrastructure, product and research teams you’ll contribute to decisions about what to train next and how to measure results.

Location / WFH:

You’ll be based in the London, dog friendly office on a fulltime basis, with daily catered lunch, working hours 0900-1700 (with no expectation to do more).

About you:

You have strong experience with training deep learning models in production

You have an indepth knowledge of PyTorch including hands-on experience with torch.distributed (DDP/FSDP-style training, distributed data loading, gradient scaling, etc.)

You have experience of training large sequence models or LLMs at scale

You have a software engineering background with Python, also familiar with TypeScript and / or Golang

You have distributed systems / training ops experience including practical experience running multi-node jobs on GPU clusters (Slurm, Kubernetes, or managed cloud equivalents) and are familiar with GPU performance tuning: memory usage, mixed precision, throughput vs. latency tradeoffs

You have experience within a reinforcement learning environment

You’re collaborative with great communication skills

You are degree educated to BSc / MSc in a relevant discipline

Apply now or call to find out more about this Machine Learning Engineer opportunity.

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Applied AI / Automation Engineer

Location: London (Hybrid)

Salary : £70k + (DOE)

The Role

A London-based financial services firm operating within the hedge fund and asset management space is seeking an Applied AI / Automation Engineer to join its Data Science function.

This role will focus on designing and building an intelligent reporting and automation platform to support fund operations and administration teams. The successful candidate will work closely with both technical and operational stakeholders to deliver measurable efficiency gains and scalable automation solutions.

The overall objective is to modernise reporting production and reconciliation processes through the application of modern data engineering practices, AI-enabled automation, and agent-based workflows.

This is a hands-on engineering role focused on building reliable, production-grade systems within a complex financial environment.

Key Responsibilities

Lead the design and development of an end-to-end automated reporting platform .

Build intelligent workflows to automate data ingestion, validation, reconciliation, and reporting processes , replacing manual operational workflows with scalable, controlled systems.

Design exception-handling and human-in-the-loop mechanisms where full automation is not appropriate.

Ensure the platform delivers high levels of accuracy, auditability, and operational resilience .

Work closely with product and operations stakeholders to translate operational complexity into structured technical solutions.

Develop the system as a maintainable internal product , rather than a collection of standalone scripts or tools.

Contribute to the broader evolution of AI-driven operational capabilities across the business.

Experience & Skills

Strong automation engineering capability with the ability to apply AI in real operational environments.

Strong hands-on experience with Python and SQL (3+ years)

Experience designing and implementing data pipelines and automation systems.

Experience integrating systems via APIs and structured data feeds.

Experience building reliable, monitored, and maintainable production systems.

Familiarity with version control (Git) and CI/CD pipelines.

Experience implementing testing frameworks to ensure system reliability and accuracy.

Strong systems thinking with the ability to design end-to-end technical solutions.

Strong communication skills and ability to work cross-functionally with operations teams.

Desirable

Exposure to financial services workflows such as reconciliation, accounting, or operational controls .

Experience building systems in regulated or audit-sensitive environments .

Familiarity with workflow orchestration tools .

Experience turning internal automation into scalable internal products, including dashboards or tools (e.g. TypeScript, React, Next.js or similar ).

Opportunity

This is an opportunity to design and build an AI-driven operational platform from the ground up within a sophisticated financial environment.

Through the application of automation, AI agents, and modern data engineering, the role will help shape how AI augments and transforms operational workflows across the organisation.

Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy.

To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.

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Backend Software Engineer / Developer (TypeScript Node Data) Remote UK to £90k

Are you a data savvy Software Engineer with strong backend development experience using TypeScript and Node?

You could be progressing your career in a senior, hands-on Backend Software Engineer role at a scaling Fintech who have built an energy trading platform to revolutionise energy buying for large industrial and commercial users.

As a Backend Software Engineer you’ll help to build a seamless digital experience that makes complex energy systems simple, powerful and intuitive. You’ll be building resilient, modular backend services, data models, data flows between Postgres, Redshift, analytics layers and APIs that underpin complex trading, billing and analytics platforms.

There’s a collaborative team environment where you’ll input into technical discussions and decision making.

Location / WFH:

There’s a remote first policy so you can work from home on a full time basis, with the caveat that you’ll meet up with the team in London from time to time (approximately once a quarter, paid for).

Please note you must be UK based and have the right to work.

About you:

You have strong software engineering experience across the full development lifecycle

You have expertise with backend TypeScript, Node, Python and APIs

You have a good knowledge of AWS

You have experience with PostgreSQL, DBT and Amazon Redshift, and have had exposure to data pipelines, ETL, data modelling and LLMs

You have a good understanding of event driven systems

You’re comfortable working with complex, data rich environments and have previous experience within Fintech, Payments, eCommerce or similar with high throughput systems

You’re happy to do some brownfield, refactoring and maintenance work alongside new projects

You’re collaborative with great communication skills

What’s in it for you:

Salary to £90k

Remote working

Impactful role with complex challenges

Great career growth opportunities as the company scales

Apply now to find out more about this Backend Software Engineer / Developer (TypeScript Node Data) opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We’re an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

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Senior Software Engineer / Full Stack Developer (TypeScript Node React AWS) London / WFH to £95k

Are you a full stack technologist?

You could be progressing your career in a hands-on Senior Software Engineer role at a well established consumer facing financial services company that help people to manage debt, as they go through a technical transformation and scale-up following recent investment.

What’s in it for you:

Salary to £95k

Bonus

25 days holiday

Pension

Employee Assistance Programme

Onsite gym and well-being champions

X2 volunteering days per year

Opportunity to make an impact as part of new team in a role you can shape

Your role:

As a Senior Software Engineer you will design and develop customer facing applications, working across the full stack with a leaning towards TypeScript, Node and AWS on the backend but also with exposure to React on the front end, ensuring high standards of quality, security, reliability and operability across the stack. You’ll also have exposure to mobile app development using React Native.

Location / WFH:

You’ll be based in fantastic new offices in London that offer a wide range of facilities including wellness rooms and onsite gym for three days a week with flexibility to work from home twice a week.

About you:

You have advanced full stack development skills including TypeScript backends, microservices, APIs, React and also ideally React Native or Kotlin for mobile development

You have a good understanding of distributed systems, RDBMS (Oracle) and data modelling trade-offs

You have a good understanding of cloud native architecture and modern engineering practices such as CI/CD, Test Automation, monitoring and observability

You have an interest in AI and agentic systems, ideally having used in a commercial setting

You’re collaborative and pragmatic, comfortable working closely with Product Managers to explain technical aspects and trade-offs to shape delivery plans that balance speed, quality and risk

Apply now to find out more about this Senior Software Engineer / Full Stack Developer (TypeScript Node React AWS) opportunity.

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Tech Lead – Python / TypeScript / C# / React / Azure £650–£750 per day | Outside IR35 | 6 Month Contract | Remote (Occasional London Travel) I’m currently working with a leading financial services technology consultancy that is looking to bring in an experienced Tech Lead to support the delivery of modern software solutions within the pensions and investment space. This is a hands-on leadership role, splitting your time between full-stack engineering and leading a small team of senior developers. The role offers the opportunity to work on complex platforms within a highly collaborative environment while helping shape modern engineering practices including AI-assisted and agentic development workflows. The role You will lead a team of four experienced engineers while remaining actively involved in the development process. Alongside technical leadership, you will play a key role in delivery coordination, Agile ceremonies, and stakeholder engagement. You will also act as a key technical contact within the project environment, helping unblock delivery challenges, guide engineering decisions and ensure high-quality solutions are delivered. Key responsibilities • Leading a team of four senior engineers within an Agile delivery environment • Remaining hands-on with full-stack development across Python, TypeScript, C#, React and Azure • Running Agile ceremonies including stand-ups, sprint planning and retrospectives • Managing day-to-day delivery, identifying and removing blockers • Acting as a key technical contact for stakeholders and clients • Driving modern development practices including AI-assisted and agentic engineering workflows • Supporting solution design and maintaining strong engineering standards Experience required • Proven experience operating as a Tech Lead or Senior/Lead Engineer • Strong hands-on development experience across modern full-stack technologies • Experience with Python, TypeScript, C#/.NET, React and Azure environments • Experience leading engineering teams within Agile delivery frameworks • Strong communication skills with the ability to engage confidently with stakeholders • A solutions-focused mindset with a strong focus on delivery and engineering quality Contract details • £650–£750 per day • Outside IR35 • Initial 6 month contract • Remote working with occasional travel to Central London • Immediate start available If this looks like something you’d be interested in, feel free to apply or reach out directly to discuss the opportunity further

Camden - Office Based
6-9 month FTC
60,000 to 70,000 Pro Rata + Benefits

Exciting opportunity for a skilled Full Stack Developer to join a fast-growing London business, helping to design and build the backend systems, automation tools, and cloud infrastructure that support the company’s technology roadmap.

The business is expanding its internal systems and automation capabilities and is looking for a developer with strong experience in Python, AWS cloud services, and modern API development. This role offers the chance to work on impactful projects including business automation, data processing systems, and modern web applications.

In this role you will collaborate closely with engineering teams and business stakeholders to design and build backend services, APIs, and automation tools. You will work with technologies such as Python, AWS services including Lambda, EC2, S3, RDS, and API Gateway, as well as SQL databases and data processing libraries. You will also contribute to front end development using React where required and support integrations with Microsoft Office workflows and reporting systems.

The ideal candidate will have strong commercial experience developing backend systems using Python and building modern APIs. Experience with React, JavaScript or TypeScript, AWS cloud services, and SQL databases is essential.

Experience building automation tools, working with large datasets, or integrating with Microsoft Office workflows would be highly beneficial.

This is a unique opportunity to join a growing company at an exciting stage, working on modern cloud based systems while helping to improve automation, data processing, and development practices across the business.
The Role:
Design and develop backend systems and APIs using Python
Build secure, scalable, and maintainable cloud services within AWS
Develop automation tools and scripts that integrate with Microsoft Office workflows
Contribute to front end development using React where required
Design and maintain data processing pipelines and reporting systems
Optimise SQL queries and database performance
Collaborate with engineering teams and business stakeholders to build technical solutions
Contribute to improvements in development processes, tooling, and code quality
The Person:
Experienced Full Stack Developer with strong Python backend development skills
Commercial experience developing RESTful APIs and backend systems
Experience building modern web applications using React
Strong understanding of SQL databases, data modelling, and query optimisation
Experience working with AWS cloud services such as Lambda, EC2, S3, RDS, and API Gateway
Interest in automation, data processing, and business workflow integrations
Strong problem solving skills, attention to detail, and effective communication
Experience with Microsoft Office automation, data pipelines, or CI/CD pipelines is a plus

Rise Technical Recruitment Ltd acts an employment agency for permanent roles and an employment business for temporary roles.

The salary advertised is the bracket available for this position. The actual salary paid will be dependent on your level of experience, qualifications and skill set and will be decided by our client, the employer. Rise are not responsible or liable for any hiring decisions made by the end client.

We are an equal opportunities company and welcome applications from all suitable candidates.

Job Title: Software Engineer

Location: London

Salary: TBC - We are booking interviews in next week! Please call or email for a slot

As a Software Engineer you’ll play a pivotal role in developing cutting edge DevSecOps software systems and applications. You’ll be at the forefront of driving innovation and safeguarding digital infrastructures in the UK.

The Role:

So, what will you be doing as a Software Engineer?

Typically, you will be involved in one or more of the following:

• Planning, conducting and coordinating software development activities.
• Working with customers and key stakeholders to identify requirements and ready to advise on and influence the adoption of suitable architectures and solutions.
• Design and development of tests to debug software.
• Working with customer requirements that are to be programmed into business/mission applications, whilst utilising the appropriates standards, processes and tools throughout the entire development lifecycle.
• Mentoring of junior engineers.
• Analysis of system capabilities to resolve questions of program intent, output requirements, input data acquisition, programming techniques, and controls.
• Championing automation in the form of IaC, CI/CD and test automation.

Extra info:

• Expert knowledge of current Java.
• Proficient in another language such as Python, C++, JavaScript, TypeScript, React.
• Advanced knowledge of AWS Services such as EC2, EKS, Fargate, IAM, S3, Lambda.
• Advanced knowledge of CI/CD software pipelines for Cloud deployments.
• Expert knowledge of developing software for cloud deployment - specifically AWS.
• Expert in developing software for microservice and or serverless architectures.
• Advanced understanding the development challenges moving on-prem workload to cloud.
• Experience of developing on Linux.
• Advanced understanding of mocking and unit testing frameworks such as JUnit 5.x (Jupiter).
• Expert with Git version control.
• Proficient in Agile Development using SCRUM.
• Advanced knowledge of Oracle/ Relational Databases and/or Mongo.
• Experience of GitLab CI/CD Pipelines.
• Experience of Apache NiFi.
• Experience in the use of Atlassian Suite - Bitbucket, Jira, Confluence.
• Experience of Elasticsearch and Kibana.
• Advanced knowledge of Hibernate.

We would love to hear from you if you have any of the following Qualifications or Certifications:

• Oracle Java Certification.
• AWS Certification.
• ISTQB Certification.
• OSCP Certification.
• CCNA Certification.

My client is keen to get this position filled ASAP, so if you feel you have the skills and desire to provide passion and drive as the next Software Engineer, this is the opportunity for you!

You will be required to undergo DV clearance for this role.

So, if you are interested in joining a well-established, renowned, globally recognised organisation working with experts in their field as the next Software Engineer, hit that apply button now!

Services advertised by Gold Group are those of an Agency and/or an Employment Business.
We will contact you within the next 14 days if you are selected for interview. For a copy of our privacy policy please visit our website.

I am partnering with a highly respected financial services organisation to hire an Applied AI / Automation Engineer on a 12-month fixed-term contract. The organisation has a strong track record of innovation, operational excellence, and a culture that values collaboration, flexibility, and diversity. This opportunity sits within a modern Data Science team and will play a pivotal role in designing and building an AI-enabled reporting and reconciliation platform that will transform the client's Fund Administration processes. Role Overview The successful candidate will report into the Head of Data Science and work closely with a dedicated Product Manager in the Fund Administration team. This is a hands-on engineering role where you will architect, build, and deliver production-grade automation solutions in a real-world financial environment. Key Responsibilities Lead the design and delivery of an automated reporting and reconciliation platform. Build intelligent workflows covering data ingestion, validation, reconciliation, and NAV calculation. Establish exception-handling and human-in-the-loop processes where required. Ensure accuracy, auditability, operational resilience, and clear observability across the platform. Work closely with operations and product stakeholders to translate complex workflows into technical solutions. Evolve the solution into a robust internal product with clear maintainability and scalability. Deliver a production-ready automation platform within 12 months, reducing manual effort and increasing transparency. Qualifications & Experience Proven experience in automation engineering and applying AI in operational settings. Strong hands-on capability in Python and SQL . Experience building data pipelines, automation systems, and integrating APIs. Familiarity with production engineering best practices (testing, CI/CD, monitoring). Ability to work cross-functionally with non-technical teams. Experience in reconciliation, accounting, or controlled financial workflows (advantage). Experience working in regulated or audit-sensitive environments. Exposure to workflow orchestration tools. Experience productising internal tools (TypeScript, React, Next.js or similar). TPBN1\_UKTJ