230 reactjs developer jobs in London, United Kingdom.

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Xelix

Python Software Developer - Backend

9 days ago

Hybrid
On-site
Full-time

£60k - £80k per annum

... future of Xelix. If you’re excited about building something special with us, we’d love to hear from you. About the role We're seeking Mid and Senior Python Developers to join our back-end development team. This is a varied and challenging programming role. Tasks could include writing code to manage incoming data, working ...

London, United Kingdom

EMBS Engineering

Senior Python AI Developer

9 days ago

Hybrid
On-site
Full-time
Contract

£40k - £60k per annum

... DevOps - EC2 - FastAPI - GitOps - Support - LLM - NoSQL - Python - RAG - SQL - Security - Terraform - microservices More: Were recruiting two Senior Python AI Developers for a technology consultancy delivering enterprise-scale Generative and Agentic AI solutions for a major financial services client. These hands-on roles focus ...

London, United Kingdom

Validus Risk Management

Python Developer

9 days ago

Full-time

IT
Backend

We are looking for a Python Developer to join our Client Success Team. The vision of the Client Success Team is to establish a proactive, client-aligned feedback loop that accelerates high-impact feature delivery for the Validus Horizon platform . By doing so, the team enhances internal efficiency and delivers greater external ...

London, United Kingdom

Qube Research & Technologies

Quantitative Developer - Commodities (Python)

9 days ago

... frameworks such as Slurm and Ray is beneficial - Experience developing statistical or machine learning models is advantageous - Previous experience mentoring junior developers or interns is beneficial QRT is an equal opportunity employer. We welcome diversity as essential to our success. QRT empowers employees to work openly and ...

London, United Kingdom

Quant Capital

Python Developer Quant Trading

9 days ago

Backend

Python C# Developer Quant Trading Quant Capital is urgently looking for a Python C# Developer to work for our high profile Hedge Fund Our client is a well known global hedge fund running Marco, Systematic and HDT strategies. I am looking for a resourceful Quantitative Developer to take ownership of the IT architecture and ...

London, United Kingdom

Konrad

Software Developer (Entry Level)

9 days ago

Remote
Hybrid
Full-time

... consumers around the world. We hire exceptionally smart, analytical, and hard working people who are lifelong learners. About The Role As an entry level Software Developer you'll be tasked with working on either mobile or web applications. Working within the software development team, your duties will require you to assist in ...

London, United Kingdom

Konrad

Android Developer

9 days ago

Remote
Hybrid

Mobile

... millions of consumers around the world. We hire exceptionally smart, analytical, and hard working people who are lifelong learners. About The Role As an Android Developer you'll be tasked with working on Android application development. Working within the software development team, your duties will require you to assist in the ...

London, United Kingdom

Haystack

Python Developer

9 days ago

Full-time

Backend

£200k per annum

Join a development team building software and infrastructure tools. This role offers varied work with Python and opportunities to improve shared platforms. The Role - Develop Python tools and integrate existing libraries. - Build and maintain platforms supporting server and network management.

London, United Kingdom

Hexwired Recruitment Limited

Quantitative Developer

9 days ago

Remote
Hybrid
On-site
Full-time

£30k - £60k per annum

Salary: £30,000 - 60,000 per year Requirements: - Degree in Computer Science, Mathematics, Physics, Engineering, or a related discipline - Strong Python programming experience and knowledge of data structures, concurrency, and memory management - Experience developing scalable, modular, high-performance production

London, United Kingdom

Quant Capital

Android Developer - Fintech

9 days ago

Remote
Hybrid
On-site

Product Management
Mobile

£90k per annum

Android Developer – Fintech To £90,000 Quant Capital is urgently looking for an Android Developer to join our high profile client. They have recently raised (PE and Bank) £50 million and are set for another £100 million raise in February. They are acquiring users at 50,000 per month and the boards aim is for a £2billion ...

London, United Kingdom

Mercor

Software Developer - AI Projects

9 days ago

Remote
Full-time
Contract

$50 - $60 per hour

... Headquartered in San Francisco, our investors include Benchmark , General Catalyst , Peter Thiel , Adam D'Angelo , Larry Summers , and Jack Dorsey . Position: Software Developers (Must own MacBook) Type: Contract Compensation: $50–$60/hour Location: Remote Commitment: 10–20 hours/week Role Responsibilities - Complete and narrate real ...

London, United Kingdom

IntelStack

Manager - Principal Consultant, iOS Developer

9 days ago

Mobile

Seeking an experienced iOS Developer to build secure, high-performance native mobile applications in Swift and SwiftUI. The role covers the full app lifecycle, from architecture and UI to authentication, testing and App Store releases. Inviting applications for the role of Manager - Principal Consultant, iOS Developer At ...

London, United Kingdom

Quant Capital

JavaScript Node.JS Developer Blockchain

9 days ago

Backend

... commodity industry and overall the opportunity to influence the direction of the project and create a software system to be proud of. Day to Day Javascript Developers will: - Working on development of products in an agile manner delivering high quality, tested code - Work with the Tech Lead and other developers to help ...

London, United Kingdom

Baltimore Consulting Group

SQL Developer

10 days ago

Hybrid
Contract

£450 per day

SQL Developer 4 Month Contract | ASAP Start £450 per day Outside IR35 Hybrid Working CVs are being reviewed immediately and interviews will be taking place shortly, with a view to starting as soon as possible. Are you an experienced SQL Developer with specialist NEC Housing reporting expertise? This is a fantastic opportunity ...

London, United Kingdom

Tiro Partners

Software Developer

10 days ago

Hybrid
On-site
Full-time
Contract

£75k - £100k per annum

... wider engineering team Technologies: - Backend - Docker - Java - Kafka - Git - Jenkins - NoSQL - REST More: We are offering a 6-month contract for a Software Developer to join a well-known clients fintech project in London, with hybrid working and twice-weekly office attendance. The rate is £(Apply online only) per day. Our ...

London, United Kingdom

Wonderbly

Digital Design Developer (Freelance)

10 days ago

Hybrid
On-site
Contract

Frontend

3-5 days per week, hybrid work policy in central London office Wonderbly is looking for a freelance design developer. You will join the team on a mission to reimagine https://jobeax.com/link/BF9JrJ8hoQtCb8wa with an entirely new product proposition. You will be thinking of and building the best customer interactions, motion ...

London, United Kingdom

The PFA

Regional Coach Developer - London Region

10 days ago

Remote
Hybrid
On-site
Full-time

... Competitive remuneration package plus generous benefits - Closing Date : 23:59, Monday 9 November 2026 The PFA is currently looking for a regionally based coach developer to join the 15 we already have established throughout the professional game. Successful applicants must have experience of working within the professional ...

London, United Kingdom

DRW

Developer Experience Engineer

10 days ago

Hybrid
On-site
Contract

... not just what we do that matters–it's how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus. The Developer Experience team provides mission critical services to the wider software engineering community at DRW. This is a dynamic role that has a blend of responsibilities, ...

London, United Kingdom

Sword Group

Allegro ETRM Developer

10 days ago

Hybrid

... technology to solve business problems, working in partnership with our clients to help in achieving their goals. We are looking for an experienced Allegro ETRM Developer to design, develop and support solutions within an enterprise energy trading environment. The successful candidate will bring strong hands-on experience of ...

London, United Kingdom

DCV Technologies

Mainframe Developer

10 days ago

Full-time

£40k - £46k per annum

Salary: £40,000 - 46,000 per year Requirements: - 6+ years of experience working with Unisys mainframes - COBOL programming experience - Experience with the DMS 1100 hierarchical database - Functional knowledge of retail banking - Knowledge of batch processes and job scheduling - Excellent problem-solving skills and

London, United Kingdom