26 to 50 of 68 Python Software Engineer Jobs in London

Senior Software Engineer - Backend & Data | Fully Remote (UK) Founding Engineer | Python | GCP | Terraform | Event-Based Systems | Data Pipelines An innovative, mission-driven LegalTech SaaS start-up is looking for a Senior Product Engineer (Backend & Data) with deep experience in Python, Product development, and Data engineering. Role Information: Salary : Up to £100,000 (DOE) + … Equity Location : Fully remote (UK only) Stack : Python , TypeScript, GCP, Pub/Sub, SQL & NoSQL, IaC (Terraform), CI/CD (GitHub Actions), Observability tools, AI tooling You’ll join a remote first, high-trust engineering team working with a modern, cloud-native stack - with real influence over technical decisions from day one. You’ll take technical ownership of the … scalable, and ready for real customers, while adding new Data-driven features, optimising performance, and shaping the long-term Product roadmap. While your focus will be backend systems in Python, you’ll also work across the stack, collaborate directly with users, and bring a strong Product mindset to every decision. This role is ideal for someone who thrives on More ❯

We’re looking for a seasoned software engineer who thrives on building in new domains. This role sits at the intersection of infrastructure and networking, perfect for a developer who loves tackling unfamiliar technical areas, learns fast, and brings strong engineering fundamentals. You’ll be responsible for leading design discussions, owning projects end-to-end, and mentoring junior … developers. While networking knowledge is useful, what matters most is your software development expertise and ability to apply it in infrastructure-heavy environments. What you’ll be doing: Designing and building tools and services that support networking and infrastructure teams Driving technical design conversations and guiding architectural decisions Leading by example with clean, scalable Python/Go development … the technical bar across the team Learning new areas quickly and applying your expertise to solve complex infrastructure problems What we’re looking for: 7+ years of hands-on software development experience (Python and/or Go strongly preferred) Proven track record of delivering production systems in infrastructure, Linux, or systems engineering environments Strong knowledge of Linux, ideally More ❯

We’re looking for a seasoned software engineer who thrives on building in new domains. This role sits at the intersection of infrastructure and networking, perfect for a developer who loves tackling unfamiliar technical areas, learns fast, and brings strong engineering fundamentals. You’ll be responsible for leading design discussions, owning projects end-to-end, and mentoring junior … developers. While networking knowledge is useful, what matters most is your software development expertise and ability to apply it in infrastructure-heavy environments. What you’ll be doing: Designing and building tools and services that support networking and infrastructure teams Driving technical design conversations and guiding architectural decisions Leading by example with clean, scalable Python/Go development … the technical bar across the team Learning new areas quickly and applying your expertise to solve complex infrastructure problems What we’re looking for: 7+ years of hands-on software development experience (Python and/or Go strongly preferred) Proven track record of delivering production systems in infrastructure, Linux, or systems engineering environments Strong knowledge of Linux, ideally More ❯

We’re looking for a seasoned software engineer who thrives on building in new domains. This role sits at the intersection of infrastructure and networking, perfect for a developer who loves tackling unfamiliar technical areas, learns fast, and brings strong engineering fundamentals. You’ll be responsible for leading design discussions, owning projects end-to-end, and mentoring junior … developers. While networking knowledge is useful, what matters most is your software development expertise and ability to apply it in infrastructure-heavy environments. What you’ll be doing: Designing and building tools and services that support networking and infrastructure teams Driving technical design conversations and guiding architectural decisions Leading by example with clean, scalable Python/Go development … the technical bar across the team Learning new areas quickly and applying your expertise to solve complex infrastructure problems What we’re looking for: 7+ years of hands-on software development experience (Python and/or Go strongly preferred) Proven track record of delivering production systems in infrastructure, Linux, or systems engineering environments Strong knowledge of Linux, ideally More ❯

We’re looking for a seasoned software engineer who thrives on building in new domains. This role sits at the intersection of infrastructure and networking, perfect for a developer who loves tackling unfamiliar technical areas, learns fast, and brings strong engineering fundamentals. You’ll be responsible for leading design discussions, owning projects end-to-end, and mentoring junior … developers. While networking knowledge is useful, what matters most is your software development expertise and ability to apply it in infrastructure-heavy environments. What you’ll be doing: Designing and building tools and services that support networking and infrastructure teams Driving technical design conversations and guiding architectural decisions Leading by example with clean, scalable Python/Go development … the technical bar across the team Learning new areas quickly and applying your expertise to solve complex infrastructure problems What we’re looking for: 7+ years of hands-on software development experience (Python and/or Go strongly preferred) Proven track record of delivering production systems in infrastructure, Linux, or systems engineering environments Strong knowledge of Linux, ideally More ❯

Award winning FinTech now requires a Python Software Engineer to contribute towards the design and development of their market data solutions, ensuring their systems are engineered to a high standard.All candidates should make sure to read the following job description and information carefully before applying. The role: Design and build our clients data solutions. Ensure system reliability … and implement software engineering and company best practices. Collaborate with operations and product teams. Automate operational tasks via the implementation of workflow management software. Key Responsibilities: Excellent Python and SQL skills. Minimum of 2 years FinTech, finance, Market data experience working as a software engineer. Linux experience Understanding of concepts in distributed systems. Excellent communicator with a More ❯

Job Title: Software Engineer (Python) Compensation: Up to £250K in First-Year Earnings (All Cash) Location: London (Hybrid) Key Skills: Strong Python experience with an interest in low-level concepts and performance optimisation We’re working with an elite FinTech client that’s looking for the best of the best Python Developers. You’ll be More ❯

Job Summary: The Trading and Risk Management System (TRMS) team is responsible for developing, supporting and maintaining our front and back office trading web applications using Python, the proprietary Beacon Dependency Graph and Glint, the Beacon UI framework. The successful candidate will contribute to the growth of the platform, exercising an eye for detail across all aspects of the … development lifecycle while maintaining organisation and good code hygiene. This engineer should be able to effectively communicate both with internal teams and with clients. The successful candidate will help the Glint platform continue to grow, exercising an eye for detail across all aspects of the development lifecycle while maintaining organisation and good code hygiene. This Software Engineer … teamwork and collaboration, as well as continuous learning and application of new technologies and trends. With progression in this track, the responsibilities expand to include leading teams, designing complex software systems, providing mentorship, and managing cross-functional integration. Responsibilities: Design, build, deploy, and maintain quality code that is simple, well-structured, clear, and well-tested. Effectively break down and More ❯

Job Summary: The Trading and Risk Management System (TRMS) team is responsible for developing, supporting and maintaining our front and back office trading web applications using Python, the proprietary Beacon Dependency Graph and Glint, the Beacon UI framework. The successful candidate will contribute to the growth of the platform, exercising an eye for detail across all aspects of the … development lifecycle while maintaining organisation and good code hygiene. This engineer should be able to effectively communicate both with internal teams and with clients. The successful candidate will help the Glint platform continue to grow, exercising an eye for detail across all aspects of the development lifecycle while maintaining organisation and good code hygiene. This Software Engineer … teamwork and collaboration, as well as continuous learning and application of new technologies and trends. With progression in this track, the responsibilities expand to include leading teams, designing complex software systems, providing mentorship, and managing cross-functional integration. Responsibilities: Design, build, deploy, and maintain quality code that is simple, well-structured, clear, and well-tested. Effectively break down and More ❯

Job Summary: The Trading and Risk Management System (TRMS) team is responsible for developing, supporting and maintaining our front and back office trading web applications using Python, the proprietary Beacon Dependency Graph and Glint, the Beacon UI framework. The successful candidate will contribute to the growth of the platform, exercising an eye for detail across all aspects of the … development lifecycle while maintaining organisation and good code hygiene. This engineer should be able to effectively communicate both with internal teams and with clients. The successful candidate will help the Glint platform continue to grow, exercising an eye for detail across all aspects of the development lifecycle while maintaining organisation and good code hygiene. This Software Engineer … teamwork and collaboration, as well as continuous learning and application of new technologies and trends. With progression in this track, the responsibilities expand to include leading teams, designing complex software systems, providing mentorship, and managing cross-functional integration. Responsibilities: Design, build, deploy, and maintain quality code that is simple, well-structured, clear, and well-tested. Effectively break down and More ❯

job specs as found below. The Trading and Risk Management System (TRMS) team is responsible for developing, supporting and maintaining our front and back office trading web applications using Python, the proprietary Beacon Dependency Graph and Glint, the Beacon UI framework. The successful candidate will contribute to the growth of the platform, exercising an eye for detail across all … aspects of the development lifecycle while maintaining organisation and good code hygiene. This engineer should be able to effectively communicate both with internal teams and with clients. The successful candidate will help the Glint platform continue to grow, exercising an eye for detail across all aspects of the development lifecycle while maintaining organisation and good code hygiene. This Software Engineer should be able to effectively communicate both with internal teams and with clients. The successful candidate values teamwork and collaboration, as well as continuous learning and application of new technologies and trends. With progression in this track, the responsibilities expand to include leading teams, designing complex software systems, providing mentorship, and managing cross-functional integration. Responsibilities More ❯

Technical Quantitative Developer/Software Engineer with deep Computer Science expertise applied to Python, its libraries and ecosystem as well as professional experience with SDLC tooling, Linux, Docker, and SQL sought to join a specialist London Headquartered Quantitative Hedge Fund. You will join as a more junior member, as part of a small team designing and implementing … Interface Layer, Central Risk Calculations, and Backtesting Frameworks, to be used by diverse Investment teams as part of their daily work. The target architecture will be written in pure Python, with SQL RDBMS, a Dockerised On-Prem RedHat Linux platform. Python is the primarily required skill, however solid professional profiency of building and shipping software in Linux …/Docker environments as well as SDLC tooling such as GitLab CI/CD are also required. In return for your Computer Science and Engineer nous, full training on the Quantitative Finance, Hedge Funds and Systematic Investing will be provided. Essential Skills & Experience: Undergraduate degree in Computer Science, Computing, Software Engineering or similar with top grades from a More ❯

Technical Quantitative Developer/Software Engineer with deep Computer Science expertise applied to Python, its libraries and ecosystem as well as professional experience with SDLC tooling, Linux, Docker, and SQL sought to join a specialist London Headquartered Quantitative Hedge Fund. You will join as a more junior member, as part of a small team designing and implementing … Interface Layer, Central Risk Calculations, and Backtesting Frameworks, to be used by diverse Investment teams as part of their daily work. The target architecture will be written in pure Python, with SQL RDBMS, a Dockerised On-Prem RedHat Linux platform. Python is the primarily required skill, however solid professional profiency of building and shipping software in Linux …/Docker environments as well as SDLC tooling such as GitLab CI/CD are also required. In return for your Computer Science and Engineer nous, full training on the Quantitative Finance, Hedge Funds and Systematic Investing will be provided. Essential Skills & Experience: Undergraduate degree in Computer Science, Computing, Software Engineering or similar with top grades from a More ❯

Technical Quantitative Developer/Software Engineer with deep Computer Science expertise applied to Python, its libraries and ecosystem as well as professional experience with SDLC tooling, Linux, Docker, and SQL sought to join a specialist London Headquartered Quantitative Hedge Fund. You will join as a more junior member, as part of a small team designing and implementing … Interface Layer, Central Risk Calculations, and Backtesting Frameworks, to be used by diverse Investment teams as part of their daily work. The target architecture will be written in pure Python, with SQL RDBMS, a Dockerised On-Prem RedHat Linux platform. Python is the primarily required skill, however solid professional profiency of building and shipping software in Linux …/Docker environments as well as SDLC tooling such as GitLab CI/CD are also required. In return for your Computer Science and Engineer nous, full training on the Quantitative Finance, Hedge Funds and Systematic Investing will be provided. Essential Skills & Experience: Undergraduate degree in Computer Science, Computing, Software Engineering or similar with top grades from a More ❯

Technical Quantitative Developer/Software Engineer with deep Computer Science expertise applied to Python, its libraries and ecosystem as well as professional experience with SDLC tooling, Linux, Docker, and SQL sought to join a specialist London Headquartered Quantitative Hedge Fund. You will join as a more junior member, as part of a small team designing and implementing … Interface Layer, Central Risk Calculations, and Backtesting Frameworks, to be used by diverse Investment teams as part of their daily work. The target architecture will be written in pure Python, with SQL RDBMS, a Dockerised On-Prem RedHat Linux platform. Python is the primarily required skill, however solid professional profiency of building and shipping software in Linux …/Docker environments as well as SDLC tooling such as GitLab CI/CD are also required. In return for your Computer Science and Engineer nous, full training on the Quantitative Finance, Hedge Funds and Systematic Investing will be provided. Essential Skills & Experience: Undergraduate degree in Computer Science, Computing, Software Engineering or similar with top grades from a More ❯

Senior C++ Software Developer, Python - Financial/Banking Candidates will have 5+ years C++ experience (ideally more) and excellent knowledge of Python - ideally coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange Connectivity with some Low Latency experience. Job Overview You will work with the Product, Infrastructure and … QA teams, to produce high performance, low latency and highly reliable code. Your goal will be to develop software which handle large amount of TPS to drive a highly efficient technology used by several markets around the world. To be successful in this role as a Senior Software Engineer C++, you will be a proponent of agile … methodology and modern software best practices. You can produce detailed technical work in OOP and work with other members of the Development team to produce code of high-quality standards. Ideally, you should have worked in critical systems development in the past. Responsibilities and Duties Codes, tests, integrates, and documents software. Provides technical leadership to more junior employees and More ❯

Senior C++ Software Developer, Python - Financial/Banking Candidates will have 5+ years C++ experience (ideally more) and excellent knowledge of Python - ideally coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange Connectivity with some Low Latency experience. Job Overview You will work with the Product, Infrastructure and … QA teams, to produce high performance, low latency and highly reliable code. Your goal will be to develop software which handle large amount of TPS to drive a highly efficient technology used by several markets around the world. To be successful in this role as a Senior Software Engineer C++, you will be a proponent of agile … methodology and modern software best practices. You can produce detailed technical work in OOP and work with other members of the Development team to produce code of high-quality standards. Ideally, you should have worked in critical systems development in the past. Responsibilities and Duties • Codes, tests, integrates, and documents software. • Provides technical leadership to more junior employees and More ❯

Software Engineer – AI Infrastructure | Up to £130K + Equity | London We're working with a stealth-stage AI infrastructure startup in London, founded by ex–Palantir engineering leads. Their mission is to help enterprises structure and automate messy internal data and processes, one of the biggest challenges businesses face AI today. They’re hiring a Backend Engineer (3+ years’ experience) to take ownership of core backend systems end-to-end, from infrastructure to database design. Ideal Profile: Strong experience with Python and SQL Familiarity with FastAPI , Pydantic , and PostgreSQL Bonus: experience with lower-level languages such as Rust Role Details: Compensation: £80K–£130K + equity (0.1–0.3%) Location: On-site in London, 4/ More ❯

Software Engineer – AI Infrastructure | Up to £130K + Equity | London We're working with a stealth-stage AI infrastructure startup in London, founded by ex–Palantir engineering leads. Their mission is to help enterprises structure and automate messy internal data and processes, one of the biggest challenges businesses face AI today. They’re hiring a Backend Engineer (3+ years’ experience) to take ownership of core backend systems end-to-end, from infrastructure to database design. Ideal Profile: Strong experience with Python and SQL Familiarity with FastAPI , Pydantic , and PostgreSQL Bonus: experience with lower-level languages such as Rust Role Details: Compensation: £80K–£130K + equity (0.1–0.3%) Location: On-site in London, 4/ More ❯

Software Engineer – AI Infrastructure | Up to £130K + Equity | London We're working with a stealth-stage AI infrastructure startup in London, founded by ex–Palantir engineering leads. Their mission is to help enterprises structure and automate messy internal data and processes, one of the biggest challenges businesses face AI today. They’re hiring a Backend Engineer (3+ years’ experience) to take ownership of core backend systems end-to-end, from infrastructure to database design. Ideal Profile: Strong experience with Python and SQL Familiarity with FastAPI , Pydantic , and PostgreSQL Bonus: experience with lower-level languages such as Rust Role Details: Compensation: £80K–£130K + equity (0.1–0.3%) Location: On-site in London, 4/ More ❯

Software Engineer – AI Infrastructure | Up to £130K + Equity | London We're working with a stealth-stage AI infrastructure startup in London, founded by ex–Palantir engineering leads. Their mission is to help enterprises structure and automate messy internal data and processes, one of the biggest challenges businesses face AI today. They’re hiring a Backend Engineer (3+ years’ experience) to take ownership of core backend systems end-to-end, from infrastructure to database design. Ideal Profile: Strong experience with Python and SQL Familiarity with FastAPI , Pydantic , and PostgreSQL Bonus: experience with lower-level languages such as Rust Role Details: Compensation: £80K–£130K + equity (0.1–0.3%) Location: On-site in London, 4/ More ❯

THE COMPANY This organisation is pushing the boundaries of AI and data-driven software, developing next-generation tools that integrate advanced machine learning with scalable backend systems. They're looking for an experienced Python Backend Engineer to support the build and integration of key AI components across their tech stack. THE ROLE As a Contract Python Backend Engineer , you'll take ownership of backend development for a Python-based web application, ensuring smooth integration with AI/ML pipelines and data infrastructure. You'll work closely with data engineers, AI specialists, and frontend developers to deliver robust, production-quality software. Key Responsibilities: Build and maintain Python web applications (FastAPI preferred) Integrate AI … CI/CD workflows Monitor and improve performance metrics across deployed tools Collaborate with technical teams to develop end-to-end data pipelines YOUR SKILLS AND EXPERIENCE Essential: Proven Python backend development experience (FastAPI, Flask, or similar) Strong cloud experience (GCP preferred) and understanding of core web app infrastructure Skilled in automated testing (pytest) and modern DevOps tools (Git More ❯

THE COMPANY This organisation is pushing the boundaries of AI and data-driven software, developing next-generation tools that integrate advanced machine learning with scalable backend systems. They're looking for an experienced Python Backend Engineer to support the build and integration of key AI components across their tech stack. THE ROLE As a Contract Python Backend Engineer , you'll take ownership of backend development for a Python-based web application, ensuring smooth integration with AI/ML pipelines and data infrastructure. You'll work closely with data engineers, AI specialists, and frontend developers to deliver robust, production-quality software. Key Responsibilities: Build and maintain Python web applications (FastAPI preferred) Integrate AI … CI/CD workflows Monitor and improve performance metrics across deployed tools Collaborate with technical teams to develop end-to-end data pipelines YOUR SKILLS AND EXPERIENCE Essential: Proven Python backend development experience (FastAPI, Flask, or similar) Strong cloud experience (GCP preferred) and understanding of core web app infrastructure Skilled in automated testing (pytest) and modern DevOps tools (Git More ❯

Full Stack Product Software Engineer - £70-120k salary range - London Onsite - LLM AI Workflow Automation Product B2B - Mid or Senior TDL are working with a Series A, ambitious start-up who are tackling manual admin heavy tasks across Fintech, Insurance and other surrounding sectors via their AI/LLM powered products. Python, Flask/FastAPI More ❯

I am working with an exciting AI startup who are turning complex video into searchable insights - they're looking for a Software Engineer to work on the backend. Youll design scalable systems, build APIs, and deploy AI modelsturning cutting-edge research into a production-ready platform. Remote : UK Salary : Up to 50k + 1% Equity What Youll Do … CD pipelines and observability tools Collaborate with AI researchers to integrate models into production Take a product-first approach to engineering What Youll Need 2-4 years experience with Python (FastAPI/Flask) Experience with distributed systems and cloud platforms Proficiency in database design (e.g. PostgreSQL) Familiarity with Docker, IaC tools (Terraform), and monitoring stacks Start-up mindset Bonus More ❯