senior python developer jobs in London

JPMorgan Chase seeks a Software Engineer III (Java/Python) to join the Commercial & Investment Banking Emerging Markets Team in London. The role focuses on building, enhancing and delivering secure, scalable market-leading technology products within an agile team, contributing across design, development, testing, and operational stability.You will work with...

Cognizant Technology Solutions Corporation is seeking a Senior Developer to own end-to-end technical delivery in London. You will design and build scalable Python applications and secure AWS data pipelines, leveraging PySpark for large-scale transformations.Work closely with product owners to translate regulatory requirements into robust technical solutions,...

Senior Network Engineer6 MonthsLondon/Hybrid£580-£630 per day (Inside IR35)Initially 4 days per week onsite, reducing to 2 days per week onsite over time. My client in the financial sector are seeking 2 Senior Network Engineers to join a global engineering team supporting a sophisticated, business-critical trading platform. The organisation operates a...

Netcompany is seeking a Senior Software Developer to design and deliver robust Python-based solutions on AWS, with Terraform infrastructure automation. You will contribute across front-end and back-end layers, participate in architecture discussions, and drive quality through automated tests and reviews.You will join a high-velocity team working on modern...

Testing Site - JPMC in London seeks a Senior Python Developer to join the Athena Rates team, delivering sophisticated solutions for rates trading and risk management across the Equities line of business.You will design, develop, and integrate systems that support trading desks and back-office workflows, handle large data volumes, and contribute to scalable...

Junior Full Stack Developer (Python & Angular)Emergn is a technology and management consultancy with a mission to set our clients free. No dependency. No short-term fix. Just teaching them the real cure to their problems, so they can stay ahead of their competitors now and forever.A different kind of consultancy like this needs a different kind of team. One...

Senior Python Software Engineer / Developer (Django AI) London / WFH to 120kAn established FinTech business specialising in automated investment reporting is looking for a Senior Python Software Engineer to take a leading role in the design and delivery of its software products.As a Senior Python Software Engineer you'll be in a product focused engineering...

Overview We're supporting a large-scale Workday HCM implementation and are looking for several experienced Data Engineers to join the programme immediately. This is a hands-on role working alongside senior stakeholders and delivery partners to support data migration, transformation and integration activities, helping ensure the successful delivery of a...

One of the world's most sophisticated quantitative investment firms is seeking an exceptional Python Engineer to work across of data engineering, quantitative research and financial markets. This is an opportunity to solve some of the most intellectually challenging data problems in finance, working directly with Quantitative Researchers and Traders whose...

Medialab Group in the UK is seeking a senior Platform Engineer to own the non-data foundations of Apollo, Medialab’s marketing intelligence platform. You will shape how we build, ship and operate software across the business.This is a hands-on, Python-first role, collaborating with the Analytics team and Head of Data & Engineering to balance strategy with...

Full-Stack Developer – React, Python, Oracle Database, and AI/GenAI Job Category: Full-Stack Development / Software Engineering Job Type: Full-Time Job Location: London Boundaryless is a boutique consulting firm, providing clients with deep expertise in advanced analytics & data forensics, agentic automation, and Artificial Intelligence solutions. We...

Senior Network Engineer6 MonthsLondon/Hybrid£580-£630 per day (Inside IR35)Initially 4 days per week onsite, reducing to 2 days per week onsite over time. My client in the financial sector are seeking 2 Senior Network Engineers to join a global engineering team supporting a sophisticated, business-critical trading platform. The organisation operates a...

We have an opportunity to impact your career and provide an adventure where you can push the limits of what's possible. As a Lead Software Engineer at JPMorgan Chase within Quantitative Execution Strategies Tech, you are an integral part of an agile team that works to enhance, build, and deliver trusted market-leading technology products in a secure, stable,...

Salt Search in Cambridge, UK is seeking a Specialist Software Engineer to lead the design and development of complex software systems in a hybrid role.You will drive technical strategy, mentor engineers, and collaborate with cross-functional teams to deliver scalable, production‑grade solutions.Required: senior/lead/architect level experience with Python,...

Role - Senior AI / Python Engineer Duration - 6 months with very likely extension Location - Hybrid, 2 days a week onsite in London Brief - Senior AI / Python Engineer to join a technology team building a new generation of intelligent, data-driven applications. This is a hands-on engineering position combining Generative AI development with strong Python...

Careers that change lives start here. Medtronic is a global leader in healthcare technology with a Mission to alleviate pain, restore health, and extend life. Our 95,000 employees work across more than 150 countries to put patients first — developing innovative medical technologies that improve the lives of 72+ million patients each year. Your unique...

Emergn is a technology and management consultancy with a mission to set our clients free. No dependency. No short-term fix. Just teaching them the real cure to their problems, so they can stay ahead of their competitors now and forever. A different kind of consultancy like this needs a different kind of team. One you might be just the right fit for. This is...

Senior Software Engineer (Python / TypeScript / Azure) London, UK (On-site) | £100,000-£150,000 + pre-IPO stock options Build the software behind some of the world’s most advanced radar systems. CHAOS Industries is a defense tech company founded in 2022 that has raised $1B from investors including 8VC, Accel and Valor Equity Partners. You’ll build the...

Senior React Developer / Senior Front End Developer Join a focused application modernisation project, designing a secure, accessible React and TypeScript front end for an established enterprise platform while collaborating closely with an existing development team through delivery and handover. If you've also worked in the following roles, we'd also like to...

Role: Senior C# .NET Developer Location: London, UK Working Pattern: Hybrid, 3 days per week onsite, Canary Wharf or Liverpool Street Employment Type: Contract Rate: £500 a day Inside IR35 via Umbrella Role Overview We are seeking experienced Senior C# .NET Developers to join a strategic technology transformation programme within a leading...