Backend Developer Python jobs in London

IDAM Back-end Java Developer - SC Cleared | £500 - £535 We're working with a global tech powerhouse delivering mission-critical digital transformation for the UK public sector on this exciting opportunity. We are seeking a high-caliber Senior Java Developer with deep IDAM expertise to spearhead a ma

Back End Developer Placement Programme We're working with a leading UK tech talent accelerator and CompTIA Gold Partner on this exciting opportunity. This programme is specifically designed to bridge the UK skills gap by transforming ambitious beginners into industry-ready developers through intensi

Python Developer | £50 - £60 per hour We're working with a leading global financial technology partner at the forefront of Equities Derivatives innovation on this exciting opportunity. This is a high-impact role within the fastest-growing area of Equities Derivatives Technology, focusing on the soph

Python Quant Dev We're working with a premier quantitative trading and execution consultancy on this exciting opportunity. Are you a high-caliber Python Developer with a passion for market microstructure and algorithmic execution? This role puts you at the heart of European Cash Equities, where you

Who We Are Galaxy is a global leader in digital assets and data center infrastructure, delivering solutions that accelerate progress in finance and artificial intelligence. We believe that blockchain and digital asset innovation will transform how value moves through the world – and we’re building t

Are you a backend developer who enjoys solving complex data problems and building robust, scalable systems? Do you want your work to power digital experiences for leading arts, culture, and heritage institutions worldwide? Keepthinking is looking for a Backend Developer to join our growing team and

Backend Software Engineer – Python / FastAPI / Event-Driven Architecture (AI Agents / FinTech) Role: Backend Software Engineer - Python Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Salary: £70,000 – £100,000 About the Role We’re building an AI-native financial platform designed

Lead Python Developer / Software Engineer London / WFH to £120k Are you a skilled Python Developer with team leadership experience? You could be progressing your career at a well-funded and profitable FinTech start-up. As a Lead Python Developer you'll head up a small, talented tech team to deliver

IDAM Back-end Java Developer - SC Cleared | £500 - £535 We're working with a global tech powerhouse delivering mission-critical digital transformation for the UK public sector on this exciting opportunity. We are seeking a high-caliber Senior Java Developer with deep IDAM expertise to spearhead a ma

eFinancialCareers

Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you'll have the opportunity to grow your career, give back to your community and make a real impact. Job Overview Pyth

KodeLab

Power the Core of Fintech Innovation: Senior Back-End Developer at Kodelab At Kodelab, we are shaping the future of fintech, blockchain, and AI-powered solutions. Our back-end infrastructure is the backbone of our success, powering everything from secure financial transactions to AI-driven platforms

About Modo Energy The energy transition is the biggest infrastructure buildout in human history. Modo Energy is the data platform at the centre of it. We build the benchmarking, forecasting, and valuation tools that the world's most serious energy investors, developers, and operators depend on to ma

Marex

About Marex Marex Group plc (NASDAQ: MRX) is a diversified global financial services platform providing essential liquidity, market access and infrastructure services to clients across energy, commodities and financial markets. The group provides comprehensive breadth and depth of coverage across fo

Full Stack Desk Developer – London - 140k RJC is working a Full Stack Desk developer role for a global energy trading company based in London. Working as part of the Cross Commodity Trading Desk, they are looking for a developer to work closely with traders in a quant/full stack capacity The role de

Company Description Mohkam Media Ltd specializes in AI-powered systems that help businesses capture every customer inquiry, ensuring no opportunity is missed. Our innovative solutions, including AI voice reception systems, inquiry capture automation, AI chat assistants, and lead follow-up workflows,

Backend Software Engineer – Python / FastAPI / Event-Driven Architecture (AI Agents / FinTech) Role: Backend Software Engineer - Python Location: London, UK (Hybrid) Type: Full-time Level: Mid to Senior Salary: £70,000 – £100,000 About the Role We’re building an AI-native financial platform designed

ECM Selection (Holdings) Limited

€45,000 - €70,000 /year

Requirements Must have: - A solid academic background with a degree in Computer Science or a similar subject. - Substantial commercial software engineering experience and familiarity with Agile development processes, CI/CD, and software testing strategies. - Strong coding skills, ideally in Java, a

We are recruiting a Python Developer for a major energy trader (£200bn T/O). The role is focused on the Digital / Automation space and sits within the Quant Engineering Group. The brief is to develop new and innovative solutions using the latest technologies (LLM, IDP) for the Finance, Risk, Treasur

Anyone AI is recruiting skilled Backend Developers to work on a project with a leading AI lab. Qualifications: Advanced professional written proficiency in English 3–7 years of professional software engineering experience Strong proficiency in Python and JavaScript/TypeScript; working knowledge of J

Quant Developer (Library Quant – Rates) | C++ / Python Leading Hedge Fund | London Compensation: Highly competitive We are hiring a Quant Developer (Library-focused) to build and enhance core pricing and risk libraries within a leading hedge fund platform. This role sits close to the trading desk ,