My client is seeking to recruit a Fullstack Software Engineer on an initial 12 month contract based in London. It is hybrid and will require 2x days onsite per week.

Key responsibilities

• Front end implementation for a React application

• Visualizing and interacting with scientific data and workflow progression

• Integration of AI/ML components with frontend, backend, data and compute infrastructure

• Responsible for high quality software implementations according to best practices, including automated test suites and documentation

• Develop, measure, and monitor key metrics for all tools and services and consistently seek to iterate on and improve them

• Participate in code reviews, continuously improving personal standards as well as the wider team and product

• Liaise with other technical staff and data engineers in the team and across allied teams, to build an end-to-end pipeline consuming other data products

Basic qualifications:

• Demonstrated experience with frontend software development (e.g. React)
• Demonstrated experience of Python development (e.g. using FastAPI)
• Bachelors degree in a relevant field (including computational, numerate or life sciences), or equivalent experience
• Cloud experience (e.g. Google Cloud and cloud run preferred) including core web application infrastructure is essential
• Strong skills in JavaScript/TypeScript and Python, ensuring best practices are followed for clean and scalable code
• Demonstrated ability to work directly with designers, particularly using Figma, to convert design prototypes into engaging and interactive applications
• Experience in using automated testing tools, including Playwright and Cypress, to create, maintain, and execute comprehensive test suites
• Sound understanding of web development best practices, modern design principles, and continuous integration workflows
• Knowledge of agile practices and able to perform in agile software development environments
• Strong knowledge of modern software development tools / ways of working (e.g. git/GitHub, DevOps tools for deployment) - should be able to show practice of commit early and deploy often

Preferred qualifications:

• Experience with Docker or containerized applications, especially architecture of multi-container applications
• Demonstrated experience with biological or scientific data (e.g. genomics, transcriptomics, proteomics), or pharmaceutical industry experience, especially design of data visualisations
• Knowledge of agent-based approaches (e.g. LangGraph, PydanticAI, AutoGen)

Full Stack Software Engineer

Join a trusted supplier delivering mission-critical solutions in the defence and national security sector. You will work on leading-edge technologies across AI/Data Science, Cyber, Cloud, DevOps/SRE, and Platform Engineering, developing solutions that protect people, platforms, and information against constantly evolving threats.

The Role

As a Full Stack Software Engineer, you will design, develop, and maintain mission-critical softwares. You will work on novel products that combine physical and digital systems, collaborate closely with clients to define strategy, and explore emerging technologies.

Key responsibilities include:

Writing clean, secure code following a test-driven approach

Producing reusable and maintainable code

Translating logical designs into physical designs and detailed specifications

Documenting work using appropriate standards and tools, including prototyping where needed

Working with emerging and well-understood technologies, identifying suitable design patterns

Integrating APIs and UI components with existing data stores and services

Maintaining and developing architectural components including data ingest, storage, and REST APIs

Participating in Agile ceremonies including stand-ups, sprint planning, demos, and epic decomposition

Collaborating with user researchers and internal stakeholders to represent user needs

Required Skills

Java Enterprise development and Spring Boot

Front-end frameworks such as React, VueJS, or AngularJS

Experience with appropriate testing frameworks

Technologically curious with the ability and willingness to learn new tools and technologies

Security Clearance

Candidates must be eligible to obtain DV security clearance due to the nature of this work.

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

About Our Client

Our client is a young, design-led healthcare technology company helping over 2,000 private doctors across the UK run their practices more effectively and efficiently, with their web and mobile platform, and hundreds of thousands of their patients. For too long, medical software has been clunky, user-hostile and complicated, and they are changing that. Several customers have independently described them as ‘the Apple of practice management software’.

They are a bootstrapped, profitable and remote-first company of 25 people with 6 Full Stack Engineers including the company’s founder. Having been remote from day one, they fully believe in its benefits. They do have a lovely office in London by the river for in-person collaboration when required, but this is not mandatory as they know some like in-person working and some prefer fully remote.

About You

Our client is looking for a Senior Support Engineer who thrives on solving real customer problems through hands-on technical work. You’ll sit at the intersection of their support, engineering, and data migration teams – a true technical generalist who enjoys variety.

This is a great fit for a strong Developer who wants to take full ownership of debugging, fixing, and enhancing real-world product issues that impact doctors and patients.

You’ll work on:

• Investigating and resolving bugs or issues raised by our client’s team of Customer Support Specialists.
• Making small-to-medium feature tweaks (e.g. modifying exports, adjusting logic).
• Writing Ruby scripts and jobs for post-migration data cleanup or updates.
• Collaborating with Developers and support staff to triage, prioritise, and resolve issues.
• Delivering small fixes to production regularly and reliably.

What they are looking for:

• Strong experience with Ruby on Rails (Rails 7, Ruby 3.4).
• Proficiency with React, TypeScript / JavaScript, and PostgreSQL.
• Comfort working in a Linux-based environment (AWS ECS, command line).
• Great debugging and troubleshooting skills – you enjoy getting to the root of problems.
• Fluent, friendly communication – especially with non-technical users.
• A proactive, independent mindset – you get things done without handholding.
• You must be located within GMT / BST ±3 time zones and available during UK working hours (typically 9am – 5:30pm).

Nice to have:

• Sysadmin experience.
• Experience supporting SaaS products or working closely with support teams.

Why join our client

• Fully remote with flexible working, based around UK hours.
• Meaningful product used by thousands of doctors and patients every day.
• Calm, supportive, and highly autonomous culture.
• Direct involvement in product decisions and fixes that impact real people.
• Competitive salary.

My leading Digital client are looking for a talented and motivated individual to provide technical leadership in designing, developing and maintaining their digital initiatives and application development as they venture into offering more services for consumers across multiple digital channels.

You’ll ensure the current implementation of their digital solutions are in line with industry best practices and standards. Whilst also driving improvements in the design, processes & implementation to improve operational management, scalability, and extensibility.

This is a newly created role for a growing business. An amazing opportunity!

The following skills/experience is essential:

• Strong React Native development background
• Demonstrable experience delivering applications in both iOS and Android
• GraphQL and Restful APIs
• Solid understanding of the full mobile development life cycle
• Good communication skills

Salary: Up to £95,000 + bonus + package

Location: London (good work from home options available)

If you are interested in this React Native App Lead position and meet the above requirements please apply immediately.

Our client, a leading name in global financial markets, is expanding its Communications Surveillance and Record Keeping Technology function in response to increasing regulatory scrutiny. With regulators worldwide elevating expectations around Market Abuse monitoring and robust Record Keeping controls, this is a critical and high-profile hire.

We are seeking an exceptional Principal Engineer to play a central technical leadership role within their Surveillance Technology team. This is an opportunity to influence strategy, shape engineering standards, and drive innovation across a complex, business-critical technology landscape.

The Opportunity

Communication Surveillance and mobile capture capabilities now sit at the forefront of internal and external regulatory enquiries. As the Principal Engineer, you will act as the technical authority for a major Communications Surveillance Technology programmeleading architectural decisions, engineering best practice, and the design of next-generation solutions.

This role is ideal for a senior technologist who is hands-on, passionate about Surveillance and Record Keeping technologies, and capable of influencing cross-functional teams in a fast-moving environment.

Key Responsibilities

• Serve as the primary technical leader within the Surveillance Technology team.
• Provide expert oversight across analysis, architecture, design and delivery of complex systems.
• Architect, build, and evolve scalable, high-performance solutions for Communications Surveillance and Record Keeping.
• Lead engineering standards: architecture reviews, vendor assessments, impact analysis, and automated testing.
• Mentor and develop engineering talent, fostering a culture of continuous learning.
• Champion innovation by evaluating new technologies and methodologies within Surveillance and Record Keeping.
• Translate complex technical concepts for both technical and non-technical stakeholders.
• Support agile planning, estimation and prioritisation.
• Identify opportunities for system optimisation, refactoring, and alignment to target architectures.
• Manage technical risks, issues and dependencies.
• Benchmark against peer organisations to ensure alignment with regulatory and industry expectations.

Experience & CompetenciesEssential

• Proven experience within Communications Surveillance Technology.
• Strong background in technical leadership within software delivery teams.
• Hands-on expertise across the full software development lifecycle.
• Deep knowledge of at least one leading Communications Surveillance platform.
• Familiarity with Regex, SQL, and Boolean search concepts.
• Strong understanding of distributed systems, information security, and cloud technologies.
• Experience with major communication platforms and capture solutions (e.g., Bloomberg, LSEG, ICE, Symphony, whats app, WeCom, Smarsh, Global Relay, Behavox).
• Experience with communications data structures, ETL/ELT pipelines, and data integrity standards.
• Strong understanding of CI/CD practices and agile methodologies.
• Excellent communication and stakeholder-management skills.

Desired

• Understanding of financial markets or trading systems.
• Knowledge of FCA Market Abuse Regulation.
• Experience in performance optimisation and profiling.
• Familiarity with modern UI frameworks (React, Typescript).
• Exposure to containerisation and orchestration tools.
• Understanding of architectural frameworks and best practices.
• Knowledge of AWS or other cloud platforms.

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)

Shepherds Bush, West London
£45,000 - £48,000

We’re recruiting for an Electrical Engineer to join a rapidly growing, well renowned building service provider in West London! This is a great role if you’re looking to work on a high end contract, receive on-going training and be part of a well experience M&E team!

As an Electrical Engineer, you will carry out PPM and reactive maintenance on electrical systems, diagnose faults, troubleshoot / fault find, involved within mechanical plant maintenance, liaise with contractors, update site logbooks, and react to site emergencies.

This is a static role, following a Monday - Friday schedule.

Electrical Engineer Duties:

PPMs & Reactive maintenance
Statutory Compliance
Single and Three Phase Power, Motors, Generators, Shutdowns, Switchgear, Motors, Emergency Lighting, Fire Alarm Test, AHUs, FCUs, VAVs, Sprinkler Systems, Pumps, Belts, BMS Operation
Carry out isolation of plant and systems in accordance with safety requirements.
Ensure corrective/repair works are carried out in accordance with regulations.
Endorse safe working practices, quality standards conformity and best practice methods.
Organising subcontractors
Completing logbooks and RAMS
Reports
Permits to work
Raise and close jobs on PDA’s as necessary.
Electrical Engineer Requirements:

Fully qualified in Electrical Engineering / Installations (C&G / EAL / NVQ or equivalent)
At least 3 years experience working in commercial building maintenance
Client facing attitude
Good commercial M&E plant knowledge
Salary and Package:

£45,000 - £48,000 per annum
Monday - Friday
Company pension scheme
25 days annual leave + Bank holidays
On-going training
Overtime available
Internal progression
If you’re interested in this Electrical Engineer role, apply today!

Posted by Alex Clark

Make an Impact with Technology That Matters Imagine building software that millions of people rely on to receive critical information. You will be shaping a platform that supports government bodies, national institutions, and education services, helping deliver communications efficiently, securely, and ethically. Right now, a brand new platform is being built from scratch, and this is your chance to influence its architecture, technology choices, and future direction. You will be joining at the perfect moment to make your mark. What You Will Do \* Shape the architecture of a next-generation SaaS platform \* Build robust microservices that scale and perform \* Develop in .NET and C# on the backend \* Create intuitive, high-performing frontends with React and TypeScript \* Deploy cloud-native solutions in Azure \* Collaborate closely with senior technical leadership, helping set engineering standards \* See your work directly impact real-world public sector users You will take ownership, make decisions that help define how the platform evolves. Why You Will Love This Role \* You will influence a product from day one, your ideas and decisions will shape the future \* You will work on meaningful projects that make public sector communications more reliable, efficient, and ethical \* You will have autonomy once onboarded, with flexibility to work remotely \* You will be part of a small, collaborative team where your input is heard and valued \* You will learn and grow alongside highly experienced technical leadership What You Bring \* Deep experience in .NET/C# and building backend services \* Strong React skills, with a solid understanding of its fundamentals \* Experience designing or contributing to microservices architectures \* Confidence in containerisation (Docker) and cloud-native solutions (Azure) \* A solid grasp of SOLID principles, clean architecture, and maintainable code Bonus if you have worked in SaaS, public sector systems, or scalable high-availability platforms. How You Will Start Month 1 – Office-Based in Epsom \* Weeks 1-2: Immerse yourself in the product and business, meet the team, and understand the roadmap \* Weeks 3–4: Start hands-on development, working closely with the CTO, gradually taking ownership and ramping up at a pace that suits you After onboarding: \* Work remotely with flexible arrangements \* Required office attendance once every 3-week sprint (Mondays) \* Take full ownership of your work and influence the platform All recent hires have been fully productive within the first month. You can too. Who You Are You are someone who: \* Wants to build things properly from the ground up \* Loves solving complex technical challenges \* Cares about clean, maintainable architecture \* Wants your work to have visible, real-world impact \* Thrives in a collaborative team but can work autonomously \* Are happy to travel to Epsom, particularly during the first month for onboarding and induction \* Has the right to work in the UK (please note that visa sponsorship is not available) If you want more than just another job and want to help shape a platform that matters, this is the role for you

Senior Full Stack Developer / Tech Lead Hands‑on | Mission‑led organisation | Remote‑first Remote first, with onsite days in London 1-2 times per month 35‑hour working week, 10% pension 18-24 month FTC, with potential to go permanent £70,000-£85,000 We are looking for a hands‑on engineer who can lead from the front while shaping long‑term technical strategy. The organisation has recently completed a digital transformation, including a new website. A CRM migration is about to begin, and new tools and platforms will be built, including the use of AI to scale impact. Your work will directly shape the organisation's internal technical capability and the long‑term technical roadmap for a national advisory service. This is a mission‑driven, government‑funded organisation providing essential services to large numbers of people with leasehold properties across the UK, Wales, and Scotland. What You'll Be Doing Setting the technical direction of the organisation Taking ownership of a greenfield technical environment Building and leading a small engineering team Guiding architectural decisions while remaining hands‑on Influencing product strategy and contributing to the roadmap Why Join? Greenfield work: build tools and systems from the ground up Mission‑led: your work will directly benefit people across the UK Strategic influence: shape the entire technical roadmap Grow a team: opportunity to hire and lead your own engineering team Modern technical landscape: work with current tools and cloud technologies Requirements Strong hands‑on experience with Python (Django) Front‑end experience with JavaScript (React or Vue) Experience with relational databases Experience or exposure to Heroku Exposure to Azure or other cloud platforms Experience working in a small company (<50 people) Comfortable working in small, adaptable environments Prior experience leading teams and setting technical direction Experience building an engineering team Experience integrating AI APIs into products Wagtail CMS experience is a nice to have Please note you must be based in the UK and have full right to work in the UK. Please be aware this advert will remain open until the vacancy has been filled. Interviews will take place throughout this period, therefore we encourage you to apply early to avoid disappointment. Tate is acting as an Employment Business in relation to this vacancy. Tate is committed to promoting equal opportunities. To ensure that every candidate has the best experience with us, we encourage you to let us know if there are any adjustments we can make during the application or interview process. Your comfort and accessibility are our priority, and we are here to support you every step of the way. Additionally, we value and respect your individuality, and we invite you to share your preferred pronouns in your application

The Opportunity Our client is recruiting for a high-impact Frontend Specialist to join the Fintech & Compliance division of a global leader in the travel-commerce and e-commerce space. In this role, you aren't just building "another website." You are the architect of the sophisticated internal tools that protect millions of global transactions. You will transform complex regulatory and fraud-prevention workflows into intuitive, high-performance analyst experiences. The Tech Ecosystem You will be working in a modern, distributed environment that prioritizes engineering excellence: Core Stack: React, Next.js, and TypeScript. Architecture: Micro-frontends (Capla/Vue) and Module Federation. Data: Integrating with Java/Spring Boot services via REST and GraphQL. Cloud & DevOps: Kubernetes (BKS), AWS, and advanced observability (Metrics, Dashboards, Alerts). What You Will Do End-to-End Ownership: Own the design, implementation, and deployment of frontend features with minimal supervision. UI Excellence: Build maintainable, accessible, and high-performing UIs using Material UI (MUI). Mentorship: Elevate the "Frontend Craft" within the team through rigorous code reviews and pair programming. Reliability: Contribute to the stability of the KYP (Know Your Partner) and Case Tracking platforms through robust testing and CI/CD improvements. Who You Are The Professional: You have 4+ years of experience building production-grade web applications. The Specialist: Deeply proficient in TypeScript and React. A willingness to work within a Micro-frontend architecture is essential. The Collaborator: You enjoy working closely with Product, Design, and Compliance teams to solve "real-world" problems. Bonus Points: Previous experience in Fintech, Payments, AML (Anti-Money Laundering), or Risk is highly desirable.To Apply: If you are interested then please apply or share your updated CV on yogeshwari .s @randstad digital .com with your availability and I will give you a call back to discuss the role further. Randstad Technologies is acting as an Employment Business in relation to this vacancy

Role- Data Scientist Location: London, UK Type of job : Contract Work mode : Hybrid- 2 days onsite in a week Responsibilities: \* Explore, clean, and analyse large, complex datasets to uncover patterns, trends, and opportunities that drive actionable insights. \* Develop, train, and validate machine learning, statistical, and predictive models that solve real business problems and deliver measurable impact. \* Design and run experiments (A/B tests, hypothesis tests, simulations) to evaluate ideas, quantify outcomes, and guide decision‑making. \* Collaborate with data engineers, analysts, product managers, and domain experts to translate business requirements into well‑defined modelling tasks. \* Build end‑to‑end ML pipelines—from feature engineering and preprocessing to deployment‑ready model outputs. \* Apply advanced techniques such as NLP, time‑series forecasting, anomaly detection, optimisation, or LLM/GenAI methods where relevant. \* Implement model evaluation frameworks using offline metrics, cross‑validation, online experiments, and human‑in‑the‑loop feedback loops. \* Communicate insights clearly through dashboards, visualisations, written summaries, and presentations tailored to technical and non‑technical stakeholders. \* Ensure models are interpretable and explainable where required, providing transparency into key drivers and assumptions. \* Work with engineering teams to deploy models into production, monitor performance, and retrain or recalibrate as data and conditions change. Essential skills: Hands-on experience with GenAI, Gemini or Open source LLMs and develop GenAI applications for Code Translation, Text Extraction, Summarisation and SDLC Optimization etc. \* Hands-on Experience with AI Agents, Chat bots, RAG (Retrieval-Augmented Generation), and vector databases. ( PG vector / croma DB ) \* Hands-on Experience with GenAI Performance Evaluation tools like Pegasus, Ragas, DeepEval \* Create Conversational Interface with React JS or other Frontend components, Develop and deploy AI agents using LangGraph and ADK, A2A, MCP \* Strong programming skills in Python (experience with LangChain/LangGraph / LangSmith frameworks) and TypeScript ( preferable ) \* Solid understanding of LLMs, prompt engineering, and graph-based workflows. \* Knowledge and implementation of Input and Output guardrails in addressing Hallucination, PII filtering, HAP and Bias etc. \* Implemented security best practices, Experience to address spikes and Denial of wallet attacks, DDoS attack and other Spike arrest strategies \* Knowledge of API Gateways and ISTIO , ability to Diagnose and intercept failures in End to End communication \* Hands-on Experience with API Development and Microservices architecture Desirable experience: \* Strong experience applying machine learning, statistical modelling, and predictive analytics to real‑world business problems. \* Collaborate with cross-functional teams to ability to resolve end to end connectivity and Data Integrations \* Experience working with large, complex datasets, including data cleaning, feature engineering, and exploratory data analysis. \* Familiarity with LLMs, NLP techniques, and GenAI frameworks, including embeddings, prompt engineering, or fine‑tuning. \* Experience building end‑to‑end ML pipelines, including model validation, optimisation, deployment, and monitoring. \* Understanding of MLOps practices, including model versioning, model registries, CI/CD for ML, and automated training/inference workflows. \* Ability to translate business problems into analytical tasks and communicate insights in a clear, concise manner to technical and non‑technical audiences. \* Knowledge of data governance, including data quality, lineage, ethics, privacy considerations, and responsible AI principles. \* Comfort working with cloud platforms (GCP preferred) for model training, deployment, and scalable compute. \* A growth‑oriented mindset with enthusiasm for exploring new algorithms, tools, and emerging AI/ML techniques