python jobs in London

At Permutable, we're building real-time AI systems that turn large volumes of global news, market and proprietary data into market intelligence and systematic signals for financial institutions. We're looking for an experienced Data Platform Engineer with strong Python and AWS skills to build and scale the systems behind our data ingestion, processing,...

Free-Work is seeking a Data Analyst in Holborn, London, with 5+ years of proven experience. You will ensure data quality and enable analysis through systems to produce actionable reports and dashboards for stakeholders.Responsibilities include overseeing data sources (CRM and others), cleaning and processing data, and collaborating with IT on APIs and data...

IT Recruitment Solutions Ltd is seeking a Senior Data Engineer to join a venture-backed AI company building an intelligent operating platform for senior finance teams. You will own Python data pipelines, data models and integrations powering the platform, ensuring AI systems retrieve and reason across large multi-entity data sets.You’ll report to the CTO...

Sr Lead Software Engineer - Java / PythonLONDON, LONDON, United KingdomJob DescriptionBe an integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products.As a Lead Software Engineer at JPMorganChase within Digital Markets Execution Technology, Execute, you are an integral part of an agile...

SII UK is seeking a Software Automation Test Engineer to join our engineering team, developing validation frameworks for connected devices and intelligent digital products. You will design end-to-end automation frameworks in Python that interact with physical hardware and scale across large device fleets.You will leverage your Python expertise to build...

AI Software Developer (Python, JavaScript, ML) - London/HybridDay rate: £500 - £800 (inside IR35)Duration: 6 - 12 monthsStart: ASAPHybrid: 3 days on site per weekAbout the RoleMy client is looking for a Software Developer with AI, Python and JavaScript experience to join on a contract basis. As a Software Developer - AI, you will focus on the development...

We're building AI that predicts the future. Literally. The Company Numinous is building the world's most advanced super-forecasting AI agents. We're creating autonomous systems that ingest real-world data, reason through complex scenarios, and produce predictions for the highest-stakes decisions on the planet. Think hedge funds, traders, governments, and...

A leading quantitative trading firm in Greater London is seeking a Quant Developer to join its EMEA Development team. This role involves developing tools for quantitative trading strategies, enhancing the simulation framework, and providing support for research tasks. Ideal candidates will have a strong background in Python programming and a related degree....

Job DescriptionBe an integral part of an agile team that's constantly pushing the envelope to enhance, build, and deliver top-notch technology products.Job DescriptionBe an integral part of an agile team that works to enhance, build, and deliver trusted market-leading technology products in a secure, stable, and scalable way. As a core technical contributor,...

Senior Python Software Engineer - SC / DV CLEAREDNEW PERMANENT OPPORTUNITY AVAILABLESalary: Up to £100,000 baseLocation: LondonWorking Pattern: Hybrid - 2-4 days per week on-siteClearance: Active SC or DVType: PermanentI'm currently working with an organisation delivering innovative AI and software solutions within the UK Defence sector, who are looking for...

Kate Matthews Solutions is seeking an experienced Python Developer/Consultant with Django to work across multiple client projects. You will focus on backend development, building robust APIs using Django REST framework, and crafting scalable services. Familiarity with Celery, microservices, and CI tools is a plus.The role offers an immediate interview...

Senior Python Developer / Software Engineer (Python FastAPI Django) London to £120k Would you like to progress your career in a senior, hands‑on role at an early stage AI start‑up within the beauty space? As a Senior Python Developer you'll focus on building backend services and FastAPIs using Python as well as integrating LLMs and payment systems into...

GCS Recruitment is seeking a Python Developer / AI Engineer to join a consulting engagement focused on Agentic AI and Generative AI solutions for an Investment Banking client in London. The role involves hands-on Python engineering, AI agent development, LLM integration, and RAG workflows in a highly regulated environment.The ideal candidate will bring...

Software Engineer / Developer (Python Django SQL) London onsite to £80k Are you a data savvy Python Developer who enjoys cross team collaboration and has a keen interest in financial markets? You could be progressing your career at a scaling FinTech, the core product is a private equities / alternative investment management platform, they're well funded and...

Crisil is seeking a Python Developer with deep expertise in trading and risk management systems to build backend applications and data processing logic supporting risk calculations, trade workflows and reporting.You will work on Python-based applications, data pipelines, and RESTful services, collaborating with quants, traders and risk teams to translate...

About InvestEngineWe’re a London-based fintech on a mission to make ETF investing simple and accessible. Over 150,000 clients have trusted us with over £3 billion in assets — and we’re just getting started. We’ve been featured by MoneyWeek, Finder and Forbes, and we’re growing fast with big ambitions.About the RoleWe’re looking for a Middle...

SGI in London is hiring a Software Engineer to develop AI-powered applications and services. You will work within an AI & Innovation team to build scalable, production-grade software using Python, APIs and cloud technologies.The role emphasizes collaboration with product teams, stakeholder engagement, and delivering impactful AI products. You will contribute...

Cboe Europe in London, UK, seeks a Senior Python Software Engineer to build and expand the batch functionality of the largest equities exchange in Europe.You will design reliable, testable Python systems to support trading operations and participate in R&D projects with a global development team. A degree in Computer Science is preferred, with strong Linux...

London UKCompany /Full-Time /On-siteAt Intropic, we’re building the future of financial intelligence, where deep market expertise meets the power of AI. Founded in London’s financial centre of Canary Wharf, we exist to transform complex data into clarity, precision, and action. Our culture is shaped by truth-seeking, velocity, and ownership, values that...

Global Investment Banking Client is seeking a talented Python developer to join a cross-functional team delivering strategic and tactical solutions for Global Markets, Capital Markets, and Treasury. As a senior developer, you will contribute design, analytics, development, testing, and application programming to solve complex business problems within an...