1 to 25 of 53 Permanent Python Engineer Jobs in London

Founding Backend Engineer | Python, TypeScript, LLMs, RAG | Seed-Funded B2B SaaS | £100,000 - £160,000 + Early Stage Equity | London, Hybrid | Can Sponsor + Relocate The Company We're supporting a well-funded Seed-stage B2B SaaS startup backed by top-tier European investors. They are automating … next phase is product expansion, deeper automation, and building intelligent systems that turn unstructured data into actionable insights at scale. About the Founding Backend Engineer | Python, TypeScript, LLMs, RAG | Seed-Funded B2B SaaS | £100,000 - £160,000 + Early Stage Equity | London, Hybrid | Can Sponsor + Relocate ...

Principal Python Engineer London | Permanent | Hybrid Ncounter is supporting a global investment firm in hiring a Software Developer to help design and evolve internal compute frameworks that underpin their trading and research platforms. This is a high-impact role, working at the intersection of software engineering and distributed … opportunity to build scalable tools and frameworks used across the business. What youll do: Design, develop, and maintain performant, reliable frameworks and services in Python Build productivity tools and platforms that streamline workflows across investment and technology teams Contribute to code reviews and best practices, improving overall development quality ...

Backend Engineer - Python, Rust Paying £90k-£140K + Equity 5 days a week onsite in Central London Oliver Bernard have partnered with a stealth AI company, founded by world-class engineers with backgrounds from top-tier Silicon Valley firms, is looking to grow its core engineering team … tackling one of the biggest challenges in applied AI: bridging the gap between general models and real-world processes. We’re hiring a Backend Engineer with a strong backend foundation to join a highly technical, fast-moving team. The company is building complex systems that interact with ...

Backend Engineer - Python, Rust Paying £90k-£140K + Equity 5 days a week onsite in Central London Oliver Bernard have partnered with a stealth AI company, founded by world-class engineers with backgrounds from top-tier Silicon Valley firms, is looking to grow its core engineering team … tackling one of the biggest challenges in applied AI: bridging the gap between general models and real-world processes. We’re hiring a Backend Engineer with a strong backend foundation to join a highly technical, fast-moving team. The company is building complex systems that interact with ...

Senior Backend Software Engineer (Python) Web3 Hybrid (HQ: London) £90k - £150k Plexus has another great opportunity with a Senior Backend Engineer (Python) position. Youll play a pivotal role in designing and building robust, scalable backend systems that form the backbone of Web3-first products. Your work … products. Develop and maintain RESTful APIs using Python. Connect backend services with Web3 technologies, including blockchains, DAOs, and smart contracts. Requirements: Strong proficiency in Python and SQL. Hands-on experience with modern Python web frameworks (FastAPI, Flask, or Django). Solid understanding of cloud infrastructure and deployment environments. ...

Senior Backend Software Engineer (Python) Web3 Hybrid (HQ: London) £90k - £150k Plexus has another great opportunity with a Senior Backend Engineer (Python) position. Youll play a pivotal role in designing and building robust, scalable backend systems that form the backbone of Web3-first products click apply ...

Backend Engineer, Contract | Python (Django), Java and Rust | Fully Remote/EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length Opportunity: We're supporting a fast-moving client at huge global scale, that is in need of a Senior Backend Contractor with deep experience across … Python, Django and some Java and Rust. This is a high-impact freelance role within a tech-driven established team - building scalable systems in a modern backend environment and implementing AI work. What You'll Be Doing as a Backend Engineer, Contract | Python (Django), Java and Rust ...

Backend Engineer, Contract | Python (Django), Java and Rust | Fully Remote/EU-Based | Rate £550-650pd, Outside IR35 | 12-months Contract Length Opportunity: We're supporting a fast-moving client at huge global scale, that is in need of a Senior Backend Contractor with deep experience across … Python, Django and some Java and Rust. This is a high-impact freelance role within a tech-driven established team - building scalable systems in a modern backend environment and implementing AI work. What You'll Be Doing as a Backend Engineer, Contract | Python (Django), Java and Rust ...

Level Python Engineer is required to join a Fintech company developing next generation tools for how companies get funding and optimise their working capital. Our client aims to change how corporate finance works, by replacing static, limited and often stale financial metrics with live data-driven insights sourced … from direct connections to their clients systems. You will be joining a strong team of Python Engineers, Data Scientists, and financial experts, who are building the next generation of financial toolsscalable, secure, and smart. If you're an experience Software Engineer whose passionate about Python, excited ...

Python Software Engineer – High-Frequency Trading We're working with a high-frequency trading (HFT) firm that is looking to expand its technology team with a Python Software Engineer. This is an opportunity to join a trading firm operating at the cutting edge of global markets, where … global exchanges. You’ll work on some of the most complex and rewarding engineering challenges in the financial technology space. The Role As a Python Software Engineer, you’ll collaborate with traders, quantitative researchers, and other developers to design, develop, and optimise trading infrastructure. You’ll be directly ...

Python Software Engineer – High-Frequency Trading We're working with a high-frequency trading (HFT) firm that is looking to expand its technology team with a Python Software Engineer. This is an opportunity to join a trading firm operating at the cutting edge of global markets, where … global exchanges. You’ll work on some of the most complex and rewarding engineering challenges in the financial technology space. The Role As a Python Software Engineer, you’ll collaborate with traders, quantitative researchers, and other developers to design, develop, and optimise trading infrastructure. You’ll be directly ...

Principal Python Engineer London Permanent Hybrid Ncounter is supporting a global investment firm in hiring a Software Developer to help design and evolve internal compute frameworks that underpin their trading and research platforms. This is a high-impact role, working at the intersection of software engineering and distributed ...

Role: Staff Software Engineer (Python | Backend | Infrastructure) Location: Hybrid - 2-3 days in London Office Compensation: Up to £170,000 + equity We’re working with a frontier AI lab pushing the boundaries of computational biology, combining machine learning, cloud infrastructure, and scientific research to accelerate discoveries … life sciences. As a Staff Backend Engineer , you’ll build the distributed systems and data infrastructure that power the lab’s next-generation biology platform. From model serving to real-time data processing, your work will form the backbone of a platform enabling scientists to explore and manipulate biological ...

Role: Staff Software Engineer (Python | Backend | Infrastructure) Location: Hybrid - 2-3 days in London Office Compensation: Up to £170,000 + equity We’re working with a frontier AI lab pushing the boundaries of computational biology, combining machine learning, cloud infrastructure, and scientific research to accelerate discoveries … life sciences. As a Staff Backend Engineer , you’ll build the distributed systems and data infrastructure that power the lab’s next-generation biology platform. From model serving to real-time data processing, your work will form the backbone of a platform enabling scientists to explore and manipulate biological ...

Founding Full Stack Engineer (Python/TypeScript) – London - £180K plus equity Halian is currently working with a stealth-stage AI startup is hiring its first technical team member. If you want to build core AI systems from the ground up and move faster than a typical tech organisation … across backend, frontend, data, and cloud systems ·Solve high-impact problems (including the ones we haven’t discovered yet) Tech you’ll work with ·Python + TypeScript/Node.js (in equal measure) ·API integrations, ETL, schema validation ·React/TypeScript, Supabase, AWS ·Data quality systems and pipeline tooling ·Whatever ...

Founding Full Stack Engineer (Python/TypeScript) – London - £180K plus equity Halian is currently working with a stealth-stage AI startup is hiring its first technical team member. If you want to build core AI systems from the ground up and move faster than a typical tech organisation … across backend, frontend, data, and cloud systems ·Solve high-impact problems (including the ones we haven’t discovered yet) Tech you’ll work with ·Python + TypeScript/Node.js (in equal measure) ·API integrations, ETL, schema validation ·React/TypeScript, Supabase, AWS ·Data quality systems and pipeline tooling ·Whatever ...

Python Data Engineer - Multi-Strategy Hedge Fund Location: London | Hybrid: 2 days per week on-site | Type: Full-time About the Role A leading multi-strategy hedge fund is seeking a highly skilled Python Data Engineer to join its technology and data team. This … role focused on building and optimising data infrastructure that powers quantitative research, trading strategies, and risk management. Key Responsibilities Develop and maintain scalable Python-based ETL pipelines for ingesting and transforming market data from multiple sources. Design and manage cloud-based data lake solutions (AWS, Databricks) for large volumes ...

Full Stack Engineer/Developer (Python TypeScript) London/WFH to £120k Are you a technologist with start-up experience looking for your next opportunity? You could be progressing your career at a tech start-up that is producing an AI native data pipelining platform. As a Full … Stack Engineer within a small team, you will build and implement new features across the full tech stack, with a focus on backend Python and TypeScript and some React work on the front end. You'll take ownership and work across the full development lifecycle, collaborating with customers ...

Lead Data Engineer (SQL Python Snowflake) London/WFH to £85k Are you a skilled data technologist with strong leadership and stakeholder management skills? You could be progressing your career in a senior, hands-on Data Engineer position at a global tech company that provide data centric … government organisations to enable them to discover and analyse data and customer feedback. What's in it for you: As a Lead Data Engineer you'll earn a competitive package: Salary to £85k Bonus Unlimited holiday allowance Flexible working (x1 day a week in London) Private medical insurance ...

Lead Data Engineer (SQL Python Snowflake) London/WFH to £85k Are you a skilled data technologist with strong leadership and stakeholder management skills? You could be progressing your career in a senior, hands-on Data Engineer position at a global tech company that provide data centric … government organisations to enable them to discover and analyse data and customer feedback. What's in it for you: As a Lead Data Engineer you'll earn a competitive package: Salary to £85k Bonus Unlimited holiday allowance Flexible working (x1 day a week in London) Private medical insurance ...

Startup - Backend Python Engineer A pair of second time founders who have already built and exited successful ventures are assembling a new elite engineering team for their next AI startup! They have secured top tier backing (8 figures!), built early traction with thousands of users … backend systems that could redefine how people interact with AI every day! 💡 The Role Build core backend services, APIs and distributed systems in Python Design architecture, data flows and infrastructure foundations from day zero Work directly with the founders on product strategy and technical direction Move fast ...

Startup - Backend Python Engineer A pair of second time founders who have already built and exited successful ventures are assembling a new elite engineering team for their next AI startup! They have secured top tier backing (8 figures!), built early traction with thousands of users … backend systems that could redefine how people interact with AI every day! 💡 The Role Build core backend services, APIs and distributed systems in Python Design architecture, data flows and infrastructure foundations from day zero Work directly with the founders on product strategy and technical direction Move fast ...

Level Python Engineer is required to join a Fintech company developing next generation tools for how companies get funding and optimise their working capital. Our client aims to change how corporate finance works, by replacing static, limited and often stale financial metrics with live data-driven insights sourced ...

boards, that takes as inputs the requirements of a circuit board and automatically outputs a complete design, ready for manufacture. As a Lead Software Engineer, you’ll create simple and elegant solutions to difficult technical problems that the world has not solved before. You will work in close collaboration … infrastructure, APIs, complex database queries, ML models. Learn, use, and improve best practices and processes for high-quality software development. Our technology stack includes Python 3.11, PostgreSQL, Django, mypy, GraphQL, Docker, Redis, Typescript, React. Qualifications We’re only considering exceptional candidates, with the following pre-requisites: 5+ years ...

boards, that takes as inputs the requirements of a circuit board and automatically outputs a complete design, ready for manufacture. As a Lead Software Engineer, you’ll create simple and elegant solutions to difficult technical problems that the world has not solved before. You will work in close collaboration … infrastructure, APIs, complex database queries, ML models. Learn, use, and improve best practices and processes for high-quality software development. Our technology stack includes Python 3.11, PostgreSQL, Django, mypy, GraphQL, Docker, Redis, Typescript, React. Qualifications We’re only considering exceptional candidates, with the following pre-requisites: 5+ years ...