senior python developer jobs in London

Fantastic opportunity for a Python engineer with tech leadership experience to join one of the largest global HFT funds. Unique in their field, they combine the lively, positive spirit of a start-up with the stability of a longer-established player.Sitting centrally within the core development team and using a sophisticated, diverse technology stack,...

Senior Business Development Associate Location: London Salary: Competitive Work Type: Hybrid Working     The Role: Senior Business Development Associate   GLAS is an international provider of institutional debt administration services, serving lenders, borrowers, issuers, and advisers offering a global platform across Loan Agency and related services,...

JPMorganChase in London is seeking a Sr Lead Software Engineer (Java/Python) to help design, build, and deliver high-performance trading software within Digital Markets Execution Technology. You’ll contribute as a core technical member of an agile team, guiding architecture, coding, testing, and operations to meet ambitious objectives.The role emphasizes...

Bright Purple Resourcing Ltd is seeking a contract Backend Software Engineer (Python/Django) to help redesign the client portal for a B2B software business in Bath. This hands-on role targets mid-level to senior engineers who will own API and backend features from design through production, collaborating with product and QA teams.You’ll design and maintain...

Oliver Bernard is seeking a Senior Python Software Engineer to join a hedge fund in London. You will design, develop and scale high-performance Python services and distributed systems, helping investment teams run efficiently.You will build tooling, participate in code reviews and CI/CD pipelines, and collaborate across engineering and product teams to...

BigHand Limited is seeking a Principal Backend Engineer to own data engineering and the AWS platform powering our Agentic AI systems. This senior individual contributor role sits at the heart of a small team, focusing on Python and AWS infrastructure that underpins our AI capabilities.You will work with data scientists, full-stack AI engineers and legal...

J.P. Morgan is seeking a Senior Lead Software Engineer to drive data ingestion, transformation, and Data Product acceleration on a federated data platform for Asset Management.You will lead design and implementation of AI-ready capabilities and ensure secure, scalable delivery across teams including Quantitative Research. As a senior technical leader, you...

Descrial is hiring Full-Stack Engineers to build Descrial end to end, from the database to the interface, in King’s Cross, London. You’ll work with TypeScript and React on the front end, Python on the back end with FastAPI or Django, and PostgreSQL on AWS.You’ll join a nine-person engineering cohort spanning full-stack, front-end and back-end. You’ll...

83zero Ltd is seeking a Senior Python Developer to lead GenAI projects. You’ll write production-grade Python, build APIs and AI applications, and bring GenAI/LLM ideas from POC to production for enterprise clients.This permanent, hybrid role involves 2 days per week onsite with locations including London and other UK cities. You’ll work with OpenAI,...

JPMorganChase, within the Asset Management Core Data & Analytics Engineering organization, seeks a Senior Lead Software Engineer to design and deliver data and analytics solutions on a federated data platform. Lead development of scalable data pipelines and Data Products while embedding AI-ready foundations.You will provide technical guidance, drive secure,...

eFinancialCareers in London is seeking a Senior AI Engineer – Python to design and deploy production AI solutions. You will work on end-to-end pipelines, from concept to deployment, using Python and modern AI frameworks, with emphasis on reliability and governance in enterprise environments.You will evaluate models, monitor performance, and collaborate...

JPMorgan Chase is looking for a Senior Lead Software Engineer in Greater London to enhance their Markets Research Technology team. You will design and deliver cutting-edge technology products, focusing on cloud-native data and AIML engineering, while fostering best practices in software development.The ideal candidate has a strong background in Python,...

Join JPMorgan Chase as a Senior Lead Software Engineer within Corporate Risk Technology in London. You will design and enhance advanced data engineering solutions to deliver secure, stable, and scalable technology products. Collaborate with agile teams while driving innovation across multiple technical areas. This role requires proficiency in data...

Senior Fullstack Engineer Who is Parser? Technology alone does not create impact—the right teams do. Founded in 2018, Parser is a boutique technology services and consulting firm helping global organisations solve complex business challenges through digital transformation, product development and AI enablement. We are a fast-growing team of 340+ engineers...

A market-leading trading firm in London is seeking a Software/Data Developer to join their data-focused team. You will develop a greenfield data ingestion platform using OO Python and design ETL pipelines. The ideal candidate has over 4 years of experience in OO Python development and finance, with a proven track record in building large-scale data...

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...

Top Tier Asset Management House in London seeks a Senior Python AI Software Engineer to lead production-grade AI systems within modern cloud-native architectures. You will guide technical direction, shape AI products, and mentor engineers across global teams.This hands-on leadership role focuses on reusable AI capabilities, security, observability, and...

Sanderson Recruitment is seeking a skilled software engineer for a major UK Defence and National Security programme based in London, Manchester, or Cheltenham. The role focuses on building and delivering solutions in a highly secure environment, with on-site collaboration at core locations.Ideal candidates have strong Python or Java skills, AWS proficiency,...

Arthur Recruitment is helping an established London-based insurer recruit a hands-on Data Engineer to join the Data & Technology function. The role focuses on Databricks, Python and SQL to own data engineering solutions and deliver MI, analytics and reporting for underwriting and risk teams.The candidate will build and optimize ETL/ELT pipelines, design data...

A tech recruitment firm based in London is seeking a Senior Full Stack Engineer with experience in Python and modern frontend frameworks like React and TypeScript. In this hybrid role, the engineer will design backend systems, create scalable frontend architecture, and integrate complex systems. The ideal candidate is a strong communicator who enjoys...