London, in-person 5 days per week. Competitive Salary between £150,000 and £160,000 base plus benefits.

This is an opportunity to join a high-growth AI scale-up where you will build and deploy production-grade models that sit at the core of the product. You will work directly with an exceptional founding and engineering team, shipping advanced AI features into live customer workflows at pace.

The Company

They are a fast-growing technology business applying generative AI to complex, document-heavy workflows for global customers. The product is already used commercially and is central to how clients manage and automate specialist knowledge work. Backed by leading investors and with a strong balance sheet, they are now scaling their engineering and AI teams significantly. You will be part of a highly technical, in-office culture focused on shipping high-quality product quickly.

The Role

• Design, build and deploy production AI models that directly power core product features.
• Work across the stack to take ideas from research and prototyping into robust, user-facing systems.
• Implement, test and optimise model evaluation pipelines to improve quality and reliability.
• Collaborate closely with engineers, product and research to design new AI features end to end.
• Contribute to architecture and infrastructure decisions in a modern cloud environment.

Your Skills and Experience

• Strong commercial experience as an AI-focused engineer or software engineer with deep AI exposure.
• Excellent Python skills and a track record of writing production-quality code.
• Experience building and deploying ML or LLM-driven systems into live environments.
• Solid software engineering fundamentals across backend and, ideally, some frontend experience.
• Familiarity with modern web and data technologies such as React, TypeScript, APIs, relational databases and cloud infrastructure.
• Comfortable working in a fast-paced, in-person environment and collaborating closely with a highly technical team.
• Strong academic background in a relevant subject and/or evidence of high-calibre research or open-source work is highly valued.

What They Offer

• Base salary up to £185000, with potential flexibility for exceptional profiles.
• Meaningful equity package, giving you real ownership in the business.
• Standard pension and a high-quality in-office environment, including weekday meals.
• Visa sponsorship available where required.
• The chance to work directly with founders and senior engineers on complex, high-impact AI problems.
• Clear progression as the team scales, with opportunities to shape technical direction and standards.

How to Apply

If you are interested in this opportunity, please apply below or email me at

Java Developer - multiple roles

£510/day Inside IR-35

6 month contract

Active SC required

Remote with occasional travel to London for client meetings only - expensable

We are looking for experienced fullstack Java Software Engineers to support projects across UK Government and Law Enforcement. You’ll work in multidisciplinary teams delivering secure, reliable and scalable systems. The role is hands-on and focused on building high quality software using modern engineering practices.

What you’ll do

You’ll design, build and maintain Java based microservices, applying test driven development and following established engineering standards. You’ll work with technologies including Java, Spring Boot, Postgres, Kafka, Docker, React and AWS. You’ll contribute to CI/CD pipelines, ensure non-functional requirements are met and collaborate with colleagues across engineering, analysis and design.

Essential experience

Java and Spring Boot

Building and maintaining microservice based systems

Postgres or other relational SQL databases

Test-driven development (JUnit, Mockito or similar)

Docker and containerisation

CI/CD pipelines (Jenkins or similar)

Working in agile, multi-disciplinary teams

Desirable experience

Kafka

Liquibase or similar migration tooling

Swagger/OpenAPI

Gradle

React

TypeScript

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.

TPBN1_UKTJ

Senior Developer | Senior Software Engineer C#, .Net, Typescript, JavaScript Hybrid, 1-2 days near Liverpool Street Salary, £85,000 to £95,000 + benefits If you enjoy solving complex engineering problems, learning from highly capable peers, and working on a product where your contribution genuinely matters, please read on. We're hiring for a growing, well-funded SaaS business building a sophisticated, data-driven platform that helps organisations understand and manage complex information at scale. The company is in an early investment phase with strong growth ambitions, offering real scope for progression and the chance to help shape both the product and engineering direction. You'll be part of a bright, collaborative team of talented software engineers and academically strong problem-solvers who value clean design and thoughtful architecture. The Role As a Full Stack Engineer, you'll design and deliver features across a modern stack, working on scalable backend services and intuitive front-end applications that present complex data clearly. Key Responsibilities: Building full-stack features using C#, .NET and TypeScript/React Developing scalable backend services for complex data workflows Creating responsive, user-friendly interfaces Exploring new technologies and contributing to technical improvements Working collaboratively in an agile engineering environment Essential Skills & Experience Strong commercial experience as a Software Developer or Full Stack Engineer 5+ years experience with C# / .NET and modern JavaScript or Typescript (React preferred) Strong problem-solving ability and a collaborative mindset A Bachelor's degree in Computer Science or Software Engineering. *\* 2.1 or above \ Why Join? Technically challenging, data-driven SaaS product Strong investment for growth Work alongside a highly capable and intellectually strong team Excellent learning opportunities and clear progression as the company grows If you're looking for a role where you can learn quickly, tackle interesting technical challenges, and grow with an ambitious product business, hit apply ! Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy. TPBN1\_UKTJ

Senior Software Engineer - Bazel / Java We are seeking a collaborative and curious backend Engineer to help drive and develop the next generation of developer infrastructure and tooling as we establish a unified, robust and scalable monorepo ecosystem for all engineers at Spotify.. This role helps to support VCS and CI systems in addition to a Fleet Management product for helping developers at our client manage large scale software changes. In the last year, we have invested a huge amount of time and effort into the next steps of that and our migration towards monorepos. The role is located in our Platform Developer Experience (PDX) R&D Studio. The PDX R&D Studio oversees and owns cross discipline infrastructure that cuts across all engineering at our clent including our VCS, CI systems and beyond. YOU MUST HAVE EXPERIENCE WITH BAZEL TO BE CONSIDERED FOR THIS ROLE Role Duties Bring your experience and knowledge of working with Bazel and scaling monorepos to millions of lines of code to help us rethink the future of backend engineering at Spotify Help us migrate to, in addition to own and maintain Bazel and any related abstractions built to improve the developer experience Collaborate with our adjacent infrastructure teams across the company to develop what a best in class monorepo experience means Essential Skills Strong passion for making developers highly productive Experience developing and maintaining tools for large monorepo-based codebases Excellent problem solving skills Experience working with the Bazel build system and its ecosystem (e.g: rulesets such as rules*jvm*external, IntelliJ Bazel plugin, etc.) Fluency in Java, Python, Starlark and TypeScript This contract role can be worked fully renmotely but you must be based in the UK. I have interview slots ready to be filled so dont delay and apply ASAP to be considered. Randstad Technologies is acting as an Employment Business in relation to this vacancy. TPBN1\_UKTJ

Senior Microsoft 365 Developeris required by fast growing and highly successful global organisation.

This is a new opportunity within their experienced, dynamic IT team.

Purpose:The Senior Microsoft 365 Developer will lead and innovate in the creation, customisation, and optimisation of Microsoft 365 and SharePoint solutions that drive business productivity and enhance user experience. This role involves architecting and developing applications and integrations within the Microsoft 365 ecosystem, including Power Platform and Azure integrations, while providing technical leadership and strategic guidance to projects and teams.

Role Responsibilities:

• Manage, configure, and develop within Office 365 environments, utilising a range of Office 365 applications for document management and collaboration.
• Design and develop applications using Power Apps (Canvas Apps), Power Automate, and Power BI to create integrated solutions that support business needs.
• Knowledge of development using the Microsoft Graph API enhancing interconnectivity across applications.
• Develop, customise, and manage Modern SharePoint sites, including site pages, web parts, and site templates to enhance user experience and productivity.
• Implement Front End solutions utilising SPFx, PnP, and frameworks like JavaScript, TypeScript, and .NET Core for dynamic user experiences and functionality.
• Integrate Office 365 applications with third-party and cloud services using APIs, JSON, and CSOM, ensuring seamless data flow and application interoperability.
• Build Azure-based solutions integrated with Office 365, leveraging Azure Logic Apps, Function Apps, and other Azure services, with programming in JavaScript, C#, and PowerShell.
• Practical Office 365 product experience - configuring, administration, development and deploying solutions using the full range of Office 365 apps for document management and collaboration.
• Knowledge of SharePoint Online, OneDrive, Microsoft Teams.
• Apply practical knowledge of SharePoint Online and associated Services (Search Service, User Profile Service, Compliance Centre, Security Centre, Content and Document Management Principles).
• Apply practical knowledge in the use of PowerShell to automate deployments and perform maintenance tasks
• Experience of undertaking Office 365 BAU Admin activities.
• Implement robust security practices when working with Office365, Power Platform and Azure.
• Demonstrate strong interpersonal skills with an ability to communicate complex technical concepts effectively to clients and stakeholders.
• Capable of working autonomously, remotely, or collaboratively within diverse team environments.
• Prioritise, plan, and multitask effectively within deadlines and budget constraints, applying project management principles where required and ability to work within a project team.
• Experience working on projects, taking requirements, generating designs, and implementing a final solution.
• Strong understanding of Application Lifecycle Management when working with Power Platform and Office365 Solutions.
• Maintain up-to-date skills, learn new technologies as needed, and proactively identify and implement effective solutions for business requirements.

Qualifications/Skills/Experience:

• Knowledge of Azure Servers, Web Applications, Storage Solutions, Data Solutions, Machine Learning Solutions and Networking
• Knowledge of Web Design/Development using HTML, CSS and Adobe Creative Cloud suite of product
• Knowledge of Azure SQL Database implementation and development with Azure Data Factory

Excellent training and career development opportunities exist for the right candidate.

Location: Essex/Hybrid

Basic salary £80-100,000 + excellent benefits.

Hybrid (2-3 days onsite, Central London) | £75,000 - £85,000 + benefits A high-growth technology company operating at the intersection of real-time data, analytics, and cutting-edge product development is entering an ambitious expansion phase and is looking to hire a Senior Software Engineer to play a key role in its next stage of growth. This is an opportunity to work on mission-critical, real-time systems used at scale, with genuine ownership across architecture, development, and delivery. The role is hands-on, commercially focused, and suited to someone who enjoys solving complex technical problems in a fast-moving environment. What you'll be working on Building and evolving high-performance, real-time platforms that process and deliver live data Developing production-grade systems end-to-end, from requirements and design through to deployment and support Working across modern backend and frontend technologies, contributing to system architecture and scalability Collaborating closely with product and commercial stakeholders to deliver features that matter Supporting live systems, including participation in an out-of-hours support rota Tech environment You'll be working in a modern, cloud-based stack that includes: Backend & Frontend: Python, TypeScript, Golang, Node.js, JavaScript, React Data: PostgreSQL and NoSQL databases Cloud & DevOps: AWS, CI/CD pipelines, Terraform (desirable) Tooling: GitHub, Slack, Trello, Notion Experience with real-time systems (such as betting, trading, finance, or high-throughput data platforms) is highly advantageous, as is any exposure to data science, machine learning, or wearable/sensor technologies. What they're looking for 5+ years' experience in commercial software development Strong system design skills and the ability to work within a wider architecture A delivery-focused mindset with high standards for quality and reliability Comfortable working in both project delivery and live support environments Able to communicate complex ideas clearly to technical and non-technical audiences Self-motivated, adaptable, and confident taking ownership The setup Hybrid role with 2-3 days per week onsite in a Central London office Full-time, permanent position Competitive salary £75k-£85k, depending on experience 25 days holiday, contributory pension, and the chance to grow with a scaling business If you're a senior engineer who enjoys real-world impact, technical depth, and ownership, this is a role worth exploring. 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. TPBN1\_UKTJ

Senior Software Engineer - Python - London Salary: Up to £90,000 Location: Hybrid 2 days per week in Canary Wharf (E14) Contract: Permanent, Full Time Interviews: WC 9th February Agency Partner: dcoded The Business dcoded are partnering with a high-growth Real-Time Data SaaS business based in London, operating across a variety of market which includes wellbeing technology and gambling . The company builds low-latency, data-intensive platforms that ingest and process real-time data at scale, supporting: The business is entering a significant growth phase and is expanding its engineering team. The Role We are hiring a Senior Software Engineer to work on external, customer-facing SaaS platforms not internal IT systems. This is a hands-on role covering the full development lifecycle, from system design and build through to deployment and production support, with a strong focus on reliability, performance, and commercial impact . Responsibilities Design and develop scalable components within a real-time SaaS architecture Deliver high-quality software to agreed timescales Build and execute tests to support stable releases Support production systems, including out-of-hours support on a rota Collaborate with product teams and third-party partners Essential Experience PostgreSQL and NoSQL databases Python is the core language TypeScript, Go, Node.js, JavaScript API-driven and distributed systems Desirable Experience Betting, gambling, or other real-time domains (e.g. trading, finance) DevOps, CI/CD, AWS, Terraform Exposure to data science, ML, or real-time telemetry Senior Software Engineer - Python - London TPBN1\_UKTJ

?? Software Engineer - Developer Infrastructure & Tooling (Platform Developer Experience) ?? About the Role We're seeking a curious, collaborative Engineer to help build the next generation of developer infrastructure and tooling You'll play a critical role in creating a scalable, unified monorepo ecosystem, enabling engineers across the organisation to work faster, collaborate better, and innovate with confidence. This is a high-impact contract role focused on developer productivity, platform scale, and long-term infrastructure evolution. ??? What You'll Do ?? Design and scale Bazel-based monorepos containing millions of lines of code ?? Lead and support the migration to monorepos, owning and evolving Bazel and associated tooling ? Create abstractions, workflows, and automation that significantly enhance the developer experience ?? Partner closely with platform and infrastructure teams to define and deliver best-in-class monorepo tooling ?? Influence the future of backend engineering by improving speed, reliability, and simplicity at scale ?? Who You Are ?? Passionate about making developers highly productive and empowered ??? Proven experience building and maintaining tooling for large-scale monorepo environments ?? A strong problem solver who thrives on complex infrastructure challenges ??? Hands-on experience with Bazel and its ecosystem (e.g. rules\_jvm\_external, IntelliJ Bazel plugin, etc.) ?? Fluent in Java, Python, Starlark, and TypeScript ?? Contract & Location ?? 6-month contract ?? Fully remote ?? £750 / per day ?? Working within an EMEA time zone to support global collaboration Randstad Technologies is acting as an Employment Business in relation to this vacancy. TPBN1\_UKTJ

Principal Software Engineer (Solutions Architect)

About HL And The Opportunity

We’re building the next generation platform for one of the UK’s largest financial services companies, trusted by over 2 million clients and managing c.£150 billion in assets.

This is your opportunity to shape technology that will redefine how people invest and achieve financial freedom. You will contribute in building in our next generation Unified Client Experience (UCX) frontend platforms that will streamline client journeys across a range of products and services, in both web and mobile domains.

It’s an opportunity to design, architect and build a modern web and mobile applications using latest technologies and best practices to transform our savings and investment platform. The UCX team consolidates the efforts of the whole organisation, transforming client journeys and delivering on HL’s vision to give people financial freedom. You will work with like-minded people from business, product and engineering functions to develop and refine client journeys covering onboarding, KYC, account management and investment workflows in a secure and compliant environment.

By joining us, you’ll help deliver innovative and scalable solutions that make investing easier and more accessible to millions of users across the UK.

Be part of HL’s future. Be part of the future of investing. Shape it with us.

What You’ll Be Doing

Set technical direction: Define & maintain Front-End/Web and mobile software architecture and patterns, engineering standards and the ‘right way’ to build greenfield HL state of the art web and mobile applications.

Own a technical ‘opinionated’ architecture for front end and mobile applications: shape application designs, rail guards and make trade-offs and prevent regret spend.

Define scalable and reusable UI component-based architecture, state management, routing/navigation, error handling, data fetching and modularization strategy.

Design, publish and own engineering standards including coding standards, CI/CD strategy, deployment blueprint, testing automation strategy, observability design and security baseline.

Design Integration strategies for HL web and mobile apps with existing and new systems to deliver a seamless client experience across a range of products and services.

Tackle high-impact problems: performance bottlenecks, reliability issues, scaling limits, complex integration, tech debt hotspots.

Lead through influence: Align stakeholders, run design reviews, drive decisions, own technical governance and unblock delivery teams.

Mentor and level-up others: Coach senior/leads and set strong bar for engineering excellence.

R&D: Stay at the forefront of the React/React Native ecosystem, evaluating new technologies, industry practises and guide the engineering delivery teams with adoption.

About You

10+ years of experience with Web / Front End & Mobile software engineering and at least 4+ years in a Principal Engineering or Solution Architect role or similar

Deep understanding of Front End / Web and Mobile architecture approaches and design patterns including micro front ends, module federation, stateless, SPA and others

Advanced knowledge of React and React Native Eco system and AWS technology stack.

Strong API/integration experience: REST / GraphQL, auth flows, contract design and resilience patterns

Well versed in latest CI/CD practises and tools, deployment methodologies and experienced in tools to enforce quality standards.

Mastery of Webpack/Metro configurations, Babel and TypeScript

Expertise in complex state management and understanding the nuances between DOM based and Native based styling/layouts.

Demonstrated ability to create clear and well written documentation for architecture, design patterns, rail guards and lead design governance.

Strong communication and articulation skills, capable of independently navigating an organization and able to negotiate and lead discussions across various levels and departments to develop consensus.

Interview Process

3 Stage Interview

Stage 1 - Discussion with our Hiring Manager (30mins):

A chance to talk with our Hiring Manager in more detail about the role, our tech stack and some of the problems we solve every day. Here, we’ll dig a bit more into some of your experiences, understand the processes you’re familiar with and the technologies you’ve used to deliver end user value.

Stage 2 - Technical (70mins):

For the technical part, we’d like you to sit down with some of your potential peers to work through a technical solution or a coding problem. We’ll be looking together at where a sample piece of technology / code has issues and how we might address them.

Stage 3 - Culture Fit (30mins):

In our Cultural Fit interview, we’ll be looking to learn more about your past experiences, what keeps you motivated, where we may be able to help you improve further, key decisions you’ve helped to make and issues you’ve resolved.

Salary & Package

We offer a competitive salary, depending on experience, alongside a generous performance-based bonus scheme .

Your total reward package includes:

?? Up to 19% pension contribution - helping you plan confidently for the future

?? Private medical insurance - giving you peace of mind and access to top-tier healthcare

?? A wide range of excellent benefits , from lifestyle perks to wellbeing support, designed to help you thrive both in and out of work

We believe in recognising and rewarding the impact you make - and ensuring you feel valued every step of the way.

Working Schedule

We’re based in the stunning Paddington Central offices at 4 Kingdom Street , a modern workspace designed to energise your day and elevate collaboration.

What Makes It Special?

?? Landscaped rooftop gardens - perfect for a breath of fresh air or informal catch-ups.

?? London’s highest rooftop basketball court - yes, really!

??? Wellness amenities including showers, lockers, hairdryers, and fresh towels.

?? Cyclist-friendly with secure bike storage and drying rooms.

??? Stylish lounge areas, booths, and breakout spaces for focused work or relaxed chats.

?? Canalside location near Little Venice, with floating restaurants, coffee shops, and a seasonal pop-up garden bar.

?? Unbeatable transport links - just steps from Paddington Station and the Elizabeth Line.

We embrace a hybrid working model that gives you the best of both worlds:

1-2 days a week in the office to connect, collaborate, and enjoy everything the space has to offer.

Remote flexibility for deep focus, work-life balance, and personal productivity.

This is a full-time role , working 37.5 hours per week , Monday to Friday.

Please note, we do not offer sponsorship opportunities for this role.

TPBN1_UKTJ

A high-growth, award-winning specialist lender is seeking a Junior Software Developer to help build and implement a highly automated, bespoke lending platform. Having featured on the Financial Times 1000 fastest-growing companies in Europe for two consecutive years, this firm is now looking to transform its operating efficiency and scalability through in-house technology.

Location: London

Hybrid: 4 days on-site, 1 day remote

Salary: £40,000 to £45,0000

This is a frontend-focused role with some backend requirements. You will join a small, agile team and work directly with the company’s co-founders, playing a fundamental role in the evolution of their technology stack.

Responsibilities

* Build and maintain modern web applications using React and Next.js.

* Develop clean, intuitive user interfaces with a strong focus on UI design and usability.

* Integrate frontend components with RESTful APIs and backend services.

* Work with Node.js and related development tools to support the full application lifecycle.

* Collaborate on CI/CD pipelines and ensure high-quality code through testing and TDD practices.

* Assist in the transition towards highly automated, data-driven lending processes.

Requirements

* Proficiency in TypeScript and JavaScript.

* Strong experience with React and Next.js.

* Experience using Node.js.

* Proven ability in UI development and CSS styling libraries.

* Working knowledge of RESTful APIs and frontend-backend integration.

* Exposure to cloud platforms (Azure, AWS, or GCP).

* Understanding of CI/CD pipelines and testing practices (TDD).

Desirable Skills

* Python and FastAPI for backend development.

* Experience with AI-assisted development tools and AI agents.

* Awareness of Model Context Protocol.

* Experience working with Figma or collaborating from design files.

This role is ideal for a motivated and disciplined developer, whether self-taught, formally educated, or professionally experienced, who wants to see their code have a direct impact on a company’s growth and operational success.

Ripple Recruitment is acting as an employment agency for this vacancy. My client is an equal opportunity employer committed to fostering a diverse and inclusive workplace. Due to high volumes of interest, we can only respond to shortlisted applicants

Senior Software Engineer
Fully Remote – UK
Golang / GCP / Terraform
£75,000-£85,000

We have partnered with a fast-growing, cloud-native technology company delivering child safety & well-being solutions to clients across the UK and Europe. The platform is built on modern microservices architecture, leveraging Go (Golang) and Google Cloud Platform (GCP) to power high-performance systems that are used by thousands of customers daily.

Founded over 10 years ago, the company have grown into a global leader within their respective field who are now part of a wider group and now looking to expand their development team with new projects launching this year. The role is fully remote within the UK, and any successful candidate would need to be based in the UK. Sponsorship cannot be offered for this role.

Key Responsibilities

Design, develop and maintain backend services using Golang
Build and deploy scalable Cloud platforms on GCP – AWS or Azure is fine
Good experience with SQL and working with large datasets.
Confident on the Frontend, working with Typescript & React.
Contribute to system architecture and technical decision-making
Develop RESTful APIs and event-driven microservices
Work with cloud-native technologies including containers and serverless
Implement CI/CD pipelines, Terraform and infrastructure-as-code
Other non-essential skills include: Machine Learning, .Net, Testing.
Open to mentoring junior developers and leading on projects.
Salary: £75,000-£85,000
Benefits: Bonus, Share Scheme, 25 Days Holiday, 8% Pension, Private Medical.

If this role sounds of interest, please apply and I can give you a call.

Tim Stock
(phone number removed) | (phone number removed)
(url removed)
(url removed)

Front End Software Developer - Central London - React, Typescript and Tailwind CSS

We are a fantastic, award winning start-up company in central London looking to hire an ambitious, talented and passionate Front End Developer to join our growing team and focus on React, Typescript and Tailwind CSS

Working in a fast paced development environment, one day a week onsite in central London and the rest remote.

Responsibilities

• Hands on Front End Development across React, Typescript, Tailwind CSS
• Build scalable, quality product front ends for customers
• Work collaboratively with backend development and product design teams to create something amazing

Qualifications

• Proven experience working in fast paced, ambitious start-up environments is essential
• React, Typescript, Tailwind CSS experience
• Agile development methodologies
• Experience building scalable, well tested software solutions
• Passionate developer who loves coding, thrives in a challenging collaborative team environment and keen build amazing products focussing on front end development
• Full rights to work in the UK (unfortunately we cannot sponsor) and able to be in London office 1 day a week min

Remuneration

• 55-65k base salary depending on experience
• Learning and Development Budget for personal growth

APPLY TODAY and be a part of something amazing

Senior Developer Senior Software Engineer

• C#, .Net, Typescript, JavaScript
• Hybrid, 1-2 days near Liverpool Street
• Salary, 85,000 to 95,000 + benefits

If you enjoy solving complex engineering problems, learning from highly capable peers, and working on a product where your contribution genuinely matters, please read on.

We’re hiring for a growing, well-funded SaaS business building a sophisticated, data-driven platform that helps organisations understand and manage complex information at scale. The company is in an early investment phase with strong growth ambitions, offering real scope for progression and the chance to help shape both the product and engineering direction. You’ll be part of a bright, collaborative team of talented software engineers and academically strong problem-solvers who value clean design and thoughtful architecture.

The Role
As a Full Stack Engineer, you’ll design and deliver features across a modern stack, working on scalable backend services and intuitive front-end applications that present complex data clearly.

Key Responsibilities:

• Building full-stack features using C#, .NET and TypeScript/React
• Developing scalable backend services for complex data workflows
• Creating responsive, user-friendly interfaces
• Exploring new technologies and contributing to technical improvements
• Working collaboratively in an agile engineering environment

Essential Skills & Experience

• Strong commercial experience as a Software Developer or Full Stack Engineer
• 5+ years experience with C# / .NET and modern JavaScript or Typescript (React preferred)
• Strong problem-solving ability and a collaborative mindset
• A Bachelor’s degree in Computer Science or Software Engineering. 2.1 or above

Why Join?

• Technically challenging, data-driven SaaS product
• Strong investment for growth
• Work alongside a highly capable and intellectually strong team
• Excellent learning opportunities and clear progression as the company grows

If you’re looking for a role where you can learn quickly, tackle interesting technical challenges, and grow with an ambitious product business, hit apply !

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

A great energy client based in London is looking for a Full Stack Python Engineer.

Fantastic benefits, bonus, training, events, cycling scheme, pension, free breakfast and much more!

If you’re looking for a genuinely exceptional tech environment in London, this is it.

The team is highly collaborative, technically strong, and incredibly supportive - a group of talented professionals who genuinely enjoy working together.

• Key Responsibilities
• Design, develop, and maintain scalable and reliable software solutions, ensuring alignment with Principals and Architects.
• You must have at least 4 years Python experience
• Experience with Typescript and a years Javascript

Key Requirements

• Strong expertise in Python web development frameworks (e.g., Django) and JavaScript/TypeScript, with experience working in cloud environments such as AWS, Azure, or GCP.
• Skilled in applying software technical design principles to build scalable, secure, and maintainable solutions within modern cloud-based architectures.
• Bachelor’s or Master’s degree in Computer Science, Engineering or equivalent experience.
• Experience with CI/CD tools and practices.
• Strong problem-solving & communication skills.
• Adaptability/willingness to learn (e.g., Agile).
• Technical leadership (mentoring, best-practice guidance).

Desirable:

• Experience with modern frameworks and libraries (e.g., React, Node.js, Terraform, Celery).
• Experience with database schema design and query optimisation.
• Collaborate with cross-functional teams, including Product, QA, and DevOps, to deliver high-quality features.
• Lead code reviews and technical discussions, and contribute to architectural decisions.
• Lead complex coding tasks; ensure code quality.
• Identify and resolve performance and scalability issues.
• Write clean, maintainable, and well-documented code.
• Mentor and support junior and mid-level engineers.
• Stay current with emerging technologies and industry trends.
• Estimate work; lead delivery of features from the roadmap.
• Solve ambiguous problems with scalable solutions.

Software Engineer - Active SC, Java, Microservices Up to £550 per day (Inside IR35) London / Remote 6 months My client is an instantly recognisable consultancy who require a strong Software Engineer with Active Security Clearance (SC) and with deep expertise in Java (Spring Boot) to join a large-scale, business‑critical microservices programme. Key Requirements: Proven experience working as a Java Software Engineer on large microservice architectures Active Security Clearance (SC) Strong capability building scalable RESTful APIs and backend services in Java (Spring Boot): Postgres (or other relational SQL databases) with solid understanding of schema design and SQL Docker: Confident containerising and deploying applications Test‑Driven Development (JUnit & Mockito or similar testing frameworks) CI/CD: Hands‑on experience with Jenkins or similar automated pipeline tooling Flexibility working in agile teams and collaborating closely with engineers, product, and design colleagues Nice to have: API Specification using Swagger / OpenAPI Gradle build systems Liquibase (or similar) for database versioning/migrations Kafka or similar event‑streaming platforms React and Typescript If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C's, Privacy Policy and Disclaimers which can be found at (url removed)

Java Developer - multiple roles

£510/day Inside IR-35

6 month contract

Active SC required

Remote with occasional travel to London for client meetings only - expensable

We are looking for experienced fullstack Java Software Engineers to support projects across UK Government and Law Enforcement. You’ll work in multidisciplinary teams delivering secure, reliable and scalable systems. The role is hands-on and focused on building high quality software using modern engineering practices.

What you’ll do

You’ll design, build and maintain Java based microservices, applying test driven development and following established engineering standards. You’ll work with technologies including Java, Spring Boot, Postgres, Kafka, Docker, React and AWS. You’ll contribute to CI/CD pipelines, ensure non-functional requirements are met and collaborate with colleagues across engineering, analysis and design.

Essential experience

• Java and Spring Boot
• Building and maintaining microservice based systems
• Postgres or other relational SQL databases
• Test-driven development (JUnit, Mockito or similar)
• Docker and containerisation
• CI/CD pipelines (Jenkins or similar)
• Working in agile, multi-disciplinary teams

Desirable experience

• Kafka
• Liquibase or similar migration tooling
• Swagger/OpenAPI
• Gradle
• React
• TypeScript

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.

x12 Fullstack Engineer (Product-Focused) | (NextJS, NestJS, TypeScript)
Salary up to £140k + Equity
London Based

This isn’t a ticket-taking role. You’ll own ideas end-to-end, from customer conversations (yes, including on-site visits) to shipping production-ready features that solve real enterprise pain points.

What You’ll Do

• Take ownership of high-impact ideas and ship them fast
• Talk directly to customers and translate problems into product
• Work across the stack — architecture → backend → UI
• Make smart trade-offs to maximise impact
• Build, test, iterate in tight 6-week cycles
• Help shape new paradigms for AI-powered software in industrial inspection

What We’re Looking For

• 2-8 years shipping fullstack features in real-world products
• Experience in high-growth environments
• Founder or 0→1 experience (bonus if you’ve built something revenue-generating)
• Strong product instincts and a bias toward action
• Stack: NextJS, NestJS, TypeScript

We have more high-impact ideas than we have bandwidth. We’re looking for someone who wants to own them.

If you’re excited by autonomy, speed, and building category-defining AI software let’s talk.

Are you ready to take your career to the next level with a role that blends innovation, creativity, and cutting-edge technology? A fantastic opportunity has arisen for a Web Developer to join a forward-thinking company specialising in immersive technology. This company is at the forefront of transforming virtual reality and 360 content into collaborative, room-scale experiences. Based in the vibrant area of Hoxton, London, this is your chance to be part of an inspiring team pushing the boundaries of shared immersive environments.

What You Will Do:

• Develop and enhance user-facing interfaces for the company’s immersive platform, ensuring they are intuitive and accessible.

• Work on cloud-hosted applications and contribute to seamless integrations with real-time immersive engines.

• Collaborate with a multidisciplinary team to create innovative solutions that blend physical and digital experiences.

• Optimise web applications for performance, scalability, and security.

• Contribute to the evolution of front-end and back-end systems using modern web technologies such as React, Node.js, and TypeScript.

What You Will Bring:

• Strong proficiency in HTML, CSS, and JavaScript, with a solid grasp of best practices.

• Proven experience with Node.js and modern frameworks like React and TypeScript.

• Familiarity with WebGL and libraries such as three.js or react-three-fiber.

• A solid understanding of back-end development concepts, including APIs and authentication.

• A strong eye for UI/UX design, with experience in wireframing and prototyping being a bonus.

This role is pivotal in advancing the company’s mission to make immersive technology accessible to everyone. The company is renowned for its innovative solutions that bring teams together in collaborative, shared environments. You’ll be working on technology that empowers global brands, educators, and creative studios to engage with digital content in ways never thought possible.

Location:

This role is based in Hoxton, London, offering a hybrid working arrangement to suit your lifestyle.

Interested?:

If you’re excited by the prospect of building web technology that powers immersive environments, don’t wait! Apply today and take the first step towards an extraordinary career in this dynamic and innovative field.

Your CV will be forwarded to Jonathan Lee Recruitment, a leading engineering and manufacturing recruitment consultancy established in 1978. The services advertised by Jonathan Lee Recruitment are those of an Employment Agency.
In order for your CV to be processed effectively, please ensure your name, email address, phone number and location (post code OR town OR county, as a minimum) are included.

Annual Salary: £40k - £45k, dependent on experience

Location: Cannon Street, London

Job Type: Permanent - 4 days a week onsite

Start Date: Immediately

A new exciting permanent opportunity, for a Software Developer to join an exciting financial bridging loan, property lender organisation in an exciting phase of growth and are now seeking to develop and implement a highly automated lending process. They are currently building an in-house, bespoke software to execute various day-to-day lending analyses and processes. This software is expected to significantly enhance their operating efficiency and scalability, contributing to future growth.

They are now looking to accelerate the development of this software by adding a Software Developer to their current team of 3. This role is backend-focused but will require frontend skills. You will have the opportunity to work closely with key stakeholders in the company.

Day-to-day of the role:

Develop and implement frontend and backend components for bespoke software.

Collaborate with co-founders and other team members to define software requirements and take the lead on operational and technical projects.

Utilise React and Next.js for modern web application development.

Use Node.js and related tools for effective backend development.

Design and implement effective UIs with a focus on user experience, using TypeScript, JavaScript, and CSS.

Integrate frontend and backend aspects of the application using RESTful APIs.

Participate in continuous integration and deployment (CI/CD) pipelines.

Ensure software quality by incorporating best practices in testing, including TDD.

Required Skills & Qualifications:

Strong experience with React and Next.js.

Proficiency in Node.js and related web development tools.

Proven ability in UI development and design, focusing on clean, intuitive user interfaces.

Proficiency in TypeScript and JavaScript.

Solid understanding of CSS, styling libraries, and modern styling approaches.

Working knowledge of RESTful APIs and frontend-backend integration.

Experience with CI/CD pipelines.

Understanding of testing practices, including TDD.

Nice to have:

Familiarity with cloud platforms such as AWS, GCP, or Azure.

Experience with Python/Fast API for backend development.

Experience using AI-assisted development tools.

Awareness or exposure to Model Context Protocol.

Experience working with Figma or collaborating from design files.

Exposure to AI agents or agent-based workflows.

Benefits:

Competitive salary based on experience.

Opportunity to work on transformative technology in a dynamic environment.

Exposure to critical and strategic projects.

Professional growth and development opportunities.

To apply for this Software Developer position, please submit your CV to be immediately considered for this role.

TPBN1_UKTJ

6-12 months London - Remote £600 per day inside IR35 - umbrella only Overview Our developers work within multidisciplinary Agile teams to deliver secure, robust, and user centred digital services. The role involves building high quality software, contributing to technical design, and continually improving codebases to meet service and safety requirements. Soft Skills & Behaviours: Clear and confident communicator , able to work with designers, product teams, testers, engineers, and external partners. Highly collaborative , supporting team success and contributing to shared goals. Positive, engaged, and proactive , bringing energy to team ceremonies and wider delivery activities. Comfortable with change , able to work through evolving requirements or priorities. Keen to learn and share knowledge , contributing to code reviews, pair?programming, and community?of?practice activities. Experienced working within Agile delivery , contributing to stand-ups, planning, reviews, retrospectives, and show?and?tell sessions. Delivers with quality , making sensible trade-offs and managing technical debt thoughtfully. Stays informed about modern technologies and practices , promoting proportionate adoption of tools that add value. Technical Skills & Responsibilities: Intermediate to advanced practical experience with: React and TypeScript Python AWS services i.e. Athena/Glue, DynamoDB, ECS, S3, Lambda, SQS, Step Function, etc Automated testing frameworks for Python and JavaScript Terraform for infrastructure-as-code Agile delivery workflows Tooling experience: Git Jira Confluence Desirable (Nice to Have): Cypress GitHub Actions Splunk Other Requirements: Eligible for BPSS and SC clearance , due to interaction with sensitive or protected systems. Previous NHS experience is desirable , including understanding of NHS digital services or national systems. Exposure to digital product development and live?service environments is advantageous. TPBN1\_UKTJ

• Annual Salary: 40k - 45k, dependent on experience
• Location: Cannon Street, London
• Job Type: Permanent - 4 days a week onsite
• Start Date: Immediately

A new exciting permanent opportunity, for a Software Developer to join an exciting financial bridging loan, property lender organisation in an exciting phase of growth and are now seeking to develop and implement a highly automated lending process. They are currently building an in-house, bespoke software to execute various day-to-day lending analyses and processes. This software is expected to significantly enhance their operating efficiency and scalability, contributing to future growth.

They are now looking to accelerate the development of this software by adding a Software Developer to their current team of 3. This role is backend-focused but will require frontend skills. You will have the opportunity to work closely with key stakeholders in the company.

Day-to-day of the role:

• Develop and implement frontend and backend components for bespoke software.
• Collaborate with co-founders and other team members to define software requirements and take the lead on operational and technical projects.
• Utilise React and Next.js for modern web application development.
• Use Node.js and related tools for effective backend development.
• Design and implement effective UIs with a focus on user experience, using TypeScript, JavaScript, and CSS.
• Integrate frontend and backend aspects of the application using RESTful APIs.
• Participate in continuous integration and deployment (CI/CD) pipelines.
• Ensure software quality by incorporating best practices in testing, including TDD.

Required Skills & Qualifications:

• Strong experience with React and Next.js.
• Proficiency in Node.js and related web development tools.
• Proven ability in UI development and design, focusing on clean, intuitive user interfaces.
• Proficiency in TypeScript and JavaScript.
• Solid understanding of CSS, styling libraries, and modern styling approaches.
• Working knowledge of RESTful APIs and frontend-backend integration.
• Experience with CI/CD pipelines.
• Understanding of testing practices, including TDD.

Nice to have:

• Familiarity with cloud platforms such as AWS, GCP, or Azure.
• Experience with Python/Fast API for backend development.
• Experience using AI-assisted development tools.
• Awareness or exposure to Model Context Protocol.
• Experience working with Figma or collaborating from design files.
• Exposure to AI agents or agent-based workflows.

Benefits:

• Competitive salary based on experience.
• Opportunity to work on transformative technology in a dynamic environment.
• Exposure to critical and strategic projects.
• Professional growth and development opportunities.

To apply for this Software Developer position, please submit your CV to be immediately considered for this role.