full-stack developer jobs in London

Citigroup Inc. in London seeks an experienced full-stack architect to design, build, and scale cloud-native platforms across data, risk, and finance domains. You will collaborate with architecture and engineering teams to deliver resilient solutions and improve platform capabilities.The role emphasizes hands-on development, system design, and leadership in a...

InvestorFlow is the only company of its kind to deliver industry specialized CRM, built on Salesforce, and digital portals to help alternative asset firms find opportunities, create and manage relationships, and turn relationship insights into action with increased productivity and transparency. We are seeking a skilled and passionate Full-Stack Software...

A leading investment management firm in London is seeking an expert Software Engineer to join their Data Products team. The ideal candidate will have proficiency in Python, TypeScript, and React, with 4+ years of software engineering experience. This full-time role involves developing scalable backend systems and full-stack applications while collaborating...

Ventula Consulting Ltd. is seeking a hands-on Senior Full Stack Developer to work across front-end and back-end applications, delivering features to support the digital roadmap.The role requires strong Full Stack skills (React.js, Next.js, Node.js, TypeScript), extensive TDD/DDD testing, API and event-driven architectures, and cloud experience with AWS. It...

ClearRoute seeks a Senior Full Stack Developer to lead the build of an internal Skills Marketplace. Stack includes Kotlin & Spring for backend and React for frontend. Hybrid role based in London (Hatton Garden) with two days in the office and three remote.You will head a small pod, liaise with stakeholders and clients, and guide design using AI tools. Ideal...

Sphere is seeking a Senior Full Stack Engineer to own and build out new product lines (input tax, withholding tax, e-invoicing, tariffs) and critical platform components. You will contribute to scaling the AI-native compliance platform and drive ARR growth with end-to-end ownership.You will ship mission-critical features, manage a dedicated component, and...

About Nyxium Nyxium is a London-based deep tech company backed by top-tier investors. We are building an agentic AI and geospatial intelligence platform that supports siting, permitting, impact assessment, and decision-making for complex infrastructure projects, including energy systems, data centers, and other critical...

Platformed is seeking an experienced full-stack engineer to join our growing team in London. You’ll work across the stack, building a SaaS product using React, TypeScript and Rust, with cloud deployment and architecture responsibilities.You’ll collaborate with the CTO, founders and our small engineering team to shape the product, engage with users, and...

ClearRoute Limited is seeking an experienced Full Stack Engineer to join our team in Central London, building and evolving RESTful APIs and microservices across the stack from React front ends to Java/Spring Boot services and AWS cloud infrastructure.The role requires hands-on development, TDD/BDD, secure coding practices, and active contribution to CI/CD...

Dex is partnering with a mission-driven platform serving charities and community organisations to manage critical operations and grantmaking with AI-enhanced insights. You will own features end-to-end, from concept through deployment, across frontend, backend, and infrastructure, shaping the product surface for fundraising and international markets.Expect...

Fitch Ratings, a leading global credit ratings agency, is seeking a Senior Software Engineer to join its Ratings Technology team in London. You will design and deliver full-stack applications using Java/Springboot, C#/.NET, Python and React, influence architecture, and mentor engineers across multiple squads.This role offers hybrid work in London and other...

**Responsibilities** - Build and enhance complex GUI applications used in real-time environments - Develop trading, operational and workflow management tools - Design and build Python services, APIs and backend components - Work on event-driven and distributed systems handling large volumes of data - Create intuitive dashboards and visualisation tools for...

Hybrid: 2 days in the office – Wednesdays + 1 flexible dayIs this the next step in your career Find out if you are the right candidate by reading through the complete overview below.Salary + allowances, bonus & pensionStart: Immediate / Mid-to-Late September 2026Employment: PermanentLevel: Entry Level / Early CareerInterview: Fast-tracked 2-stage...

LA International is seeking an experienced Full Stack Developer to support a major Public Sector technology programme in London. You will design and deliver modern cloud-native solutions using Azure, Vue.js, C#/.NET and contemporary frontend technologies.The role covers the full development lifecycle, focusing on scalable backend services, secure REST APIs...

Novata is seeking a Full Stack Engineer to join our London‑based Engineering team, focused on our Companies product. You will collaborate with Product and Design to scale core tooling that helps companies manage ESG data and insights.You will own features end-to-end, contribute to architecture discussions, and mentor junior developers while expanding our...

Octopus Electric Vehicles, part of the Octopus Energy Group, is hiring a Senior Fullstack Software Engineer (Python & React) to join our product and engineering team in the UK. You’ll build APIs, develop frontend experiences, and create scalable systems powering our electric car leasing platform.You’ll work with Python, GraphQL, React/Next.js, PostgreSQL...

DescriptionJob Summary As a Full-time Analyst in the Chase Digital Development Programme, you will be part of a dynamic team focused on transforming customer experiences and developing innovative offerings. Your time will be made up of three eight-month rotations, so you can see what goes into developing intuitive experiences, from start to finish. You will...

OverviewFull Stack Engineer - Traffic Management - London. Edge Platform team is seeking experienced developers to build and maintain our edge platform networking, drive functionality and capability of our infrastructure, and operate hundreds of PoPs and their networking and traffic around the world to run edge workloads (e.g. CDN cache, live streaming,...

Job Description This role is focused on a market‑leading AI solution designed to help industrial organizations measure, manage, and reduce their environmental impact on the path to decarbonization. The solution enables customers to move beyond static sustainability reporting to operational, decision‑grade intelligence embedded directly into how the...

LaraBench is seeking a Mid-Level Full Stack Developer for its Borehamwood office. You will own features from development through deployment and contribute to business-critical platforms supporting dashboards, reporting and partner journeys.You will work with Laravel backend and Vue frontend, handling 3–5 years of experience, REST APIs and data queries....