26 to 50 of 86 Python Developer Jobs in the City of London

Python Quant Developer | *Metals Trading* | 950/Day Inside IR35 | 6 months rolling | Hybrid 2 day London Senior Python Quant Developer is required for a specialist global Energy and Commodities Trading firm. This firm operates across numerous Energy and Commodity classes, being a long-standing market leader in the sector. This Python Quant Developer … will play a pivotal part in equipping both financial and physical trading teams with data-driven insights while supporting the expansion of a sophisticated, multi-asset trading book. This Python Quant Developer role focuses on developing dashboards, analytical tools, and risk frameworks to support a multi-asset trading book spanning metals, forex, and derivatives. The position combines system … and close collaboration with trading and research teams. 6 Month rolling contract multi-year renewals Up to 950 per day, INside IR35 Hybrid working: 2 days in office LDN Python, R, Data Analysis, Stat Modelling, Grafana, Metals Experience is a MUST Essential Skills for this Quant Developer role: Extensive Python or R experience Extensive Data Analysis and More ❯

include large Private Equity funds, Asset Managers, listed Corporates, high-growth tech companies and many more. Learn more about why we do what we do here. The role: Senior Python Developer Join our lean UK-based technology team as a Senior Python Developer, where you'll play a pivotal role in the development of our systems. … server-side REST and GraphQL APIs written in Python3. What were looking for Essential skills and experience: 5+ years experience of developing complex applications using an OO language (ideally Python, but experience in C++/C#/Java/etc would also be considered) Experience working on mission-critical applications, following a robust SDLC Excellent communication and problem-solving … skills; and a strong aptitude for learning Experience and enthusiasm for test-automation and CI/CD Strong STEM degree or equivalent professional experience Desirable skills: Deep knowledge of Python, including any of the frameworks we currently use: Flask, SqlAlchemy, Alembic, Pydantic Experience with relational databases, ideally Postgres Experience of message-based architectures, and queuing technologies, i.e. RabbitMQ Experience More ❯

include large Private Equity funds, Asset Managers, listed Corporates, high-growth tech companies and many more. Learn more about why we do what we do here. The role: Senior Python Developer Join our lean UK-based technology team as a Senior Python Developer, where you'll play a pivotal role in the development of our systems. … side REST and GraphQL APIs written in Python3. What we’re looking for... Essential skills and experience: 5+ years experience of developing complex applications using an OO language (ideally Python, but experience in C++/C#/Java/etc would also be considered) Experience working on mission-critical applications, following a robust SDLC Excellent communication and problem-solving … skills; and a strong aptitude for learning Experience and enthusiasm for test-automation and CI/CD Strong STEM degree or equivalent professional experience Desirable skills: Deep knowledge of Python, including any of the frameworks we currently use: Flask, SqlAlchemy, Alembic, Pydantic Experience with relational databases, ideally Postgres Experience of message-based architectures, and queuing technologies, i.e. RabbitMQ Experience More ❯

Lead Software Developer (PYTHON/AWS/REACT) - health tech - tech for good, make a positive impact on the world. Highly successful and fast growing organisation has an exciting opportunity for a Lead Software Developer (PYTHON/AWS/REACT). JOB PURPOSE Part of the extended Technology Leadership Team, the Lead Software Developer will … evaluate trade-offs. Ability to work closely within an agile team using User Stories and acceptance criteria to understand functional and non-functional requirements Deep knowledge and experience in Python and its ecosystem, patterns and pitfalls. Extensive experience of working in an agile environment (we use Scrum). Experience with extreme programming practices such as incremental development, continuous integration More ❯

Role: Python Software Developer - Treasury Location: London Industry: Hedge Funds Overview: A global multi-strategy hedge fund is looking to add an experienced Python Developer to join their Treasury team in London. The firm operates at hedge fund scale with a start-up pace, focusing on building high-performance trading platforms. In this role, you will … liquidity management systems, working directly with traders and decision-makers in a live-market environment. Responsibilities: Architect and code resilient applications for trading, liquidity management, and funding operations using Python as the core language, with integration into data platforms and tools. Engage directly with traders and treasury stakeholders during live situations, adapting to evolving requirements and delivering solutions on … design patterns to enhance speed and quality. Experience: 5-15 years of software engineering experience, ideally in Treasury or from a hedge fund/buy-side firm Expertise in Python for designing and optimising complex applications Strong proficiency in data tools like Pandas, NumPy, SQL, and real-time data processing Familiarity with DevOps practices, including Linux, cloud platforms, and More ❯

Role: Python Software Developer - Treasury Location: London Industry: Hedge Funds Overview: A global multi-strategy hedge fund is looking to add an experienced Python Developer to join their Treasury team in London. The firm operates at hedge fund scale with a start-up pace, focusing on building high-performance trading platforms. In this role, you will … liquidity management systems, working directly with traders and decision-makers in a live-market environment. Responsibilities: Architect and code resilient applications for trading, liquidity management, and funding operations using Python as the core language, with integration into data platforms and tools. Engage directly with traders and treasury stakeholders during live situations, adapting to evolving requirements and delivering solutions on … design patterns to enhance speed and quality. Experience: 5-15 years of software engineering experience, ideally in Treasury or from a hedge fund/buy-side firm Expertise in Python for designing and optimising complex applications Strong proficiency in data tools like Pandas, NumPy, SQL, and real-time data processing Familiarity with DevOps practices, including Linux, cloud platforms, and More ❯

Senior Python Developer | Electronics x AI £100k to £130k base + stock options + benefits Hybrid within the UK. Office days usually Wednesday and Thursday The mission Build software that lets teams design electronics at ridiculous speed using AI. Turn research into production systems that ship. What you will do Own Python services and APIs for AI … production code Optimise performance for compute heavy workloads Collaborate with ML and product to ship end to end Improve CI, monitoring, and release quality What you will bring Strong Python in production and senior-level ownership Depth in one of: algorithms, optimisation, ML, signal processing, or EDA Experience with some of: Django, FastAPI, GraphQL, PostgreSQL, Redis, Docker, pytest, mypy … Pragmatic testing, profiling, and code review habits Our tech Python 3.11, Django, GraphQL, PostgreSQL, Redis, Docker, CI, mypy. TypeScript and React on the product surface. Why this is worth your time High ownership on core systems with real product impact Meaningful equity and competitive salary Flexible hybrid setup with modern tooling Smart teammates, zero corporate sludge The process Screening More ❯

Senior Python Developer | Electronics x AI 100k to 130k base + stock options + benefits Hybrid within the UK. Office days usually Wednesday and Thursday The mission Build software that lets teams design electronics at ridiculous speed using AI. Turn research into production systems that ship. What you will do Own Python services and APIs for AI … production code Optimise performance for compute heavy workloads Collaborate with ML and product to ship end to end Improve CI, monitoring, and release quality What you will bring Strong Python in production and senior-level ownership Depth in one of: algorithms, optimisation, ML, signal processing, or EDA Experience with some of: Django, FastAPI, GraphQL, PostgreSQL, Redis, Docker, pytest, mypy … Pragmatic testing, profiling, and code review habits Our tech Python 3.11, Django, GraphQL, PostgreSQL, Redis, Docker, CI, mypy. TypeScript and React on the product surface. Why this is worth your time High ownership on core systems with real product impact Meaningful equity and competitive salary Flexible hybrid setup with modern tooling Smart teammates, zero corporate sludge The process Screening More ❯

Senior Python developer to join our clients Network Automation team. You will be comfortable with Django/Flask, Gitlab and have experience of container infrastructure. This is a three month rolling contract that will require you in the office, just outside London twice a week at rate of £500 a day (inside IR35). The role will involve … will be required as part of the development as well as maintaining a high standard for code readability and collaboration. Required skills and experience: 3 years commercial experience with Python Experience with Web frameworks such as Django and Flask Experience of using and building RESTful APIs using Python Experience with Front-end development (HTML, CSS, Javascript) Experience with More ❯

Senior Python developer to join our clients Network Automation team. You will be comfortable with Django/Flask, Gitlab and have experience of container infrastructure. This is a three month rolling contract that will require you in the office, just outside London twice a week at rate of £500 a day (inside IR35). The role will involve … will be required as part of the development as well as maintaining a high standard for code readability and collaboration. Required skills and experience: 3 years commercial experience with Python Experience with Web frameworks such as Django and Flask Experience of using and building RESTful APIs using Python Experience with Front-end development (HTML, CSS, Javascript) Experience with More ❯

Front Office Python Developer – Trading Systems Orbis are proudly working with a global Trading firm who are redefining how data and technology shape the future of their market, and are fully embracing GenAI across the enterprise. They are looking for a Front Office Software Engineer with excellent Python experience to be at the forefront of this evolution. … As a Front Office Python Software Engineer, this is an incredible opportunity to work side-by-side with Traders, building high-performance systems and innovative tools contributing to PnL, by helping Traders understand markets, forecast movements, and act with confidence. In this role, you will be responsible for: Partnering directly with Traders to design, build, and own production Trading … systems developed in Python Designing and developing solutions to analyse market data, manage trading positions, and support the models that drive front-office decision-making Designing cloud-native tools integrating with the Front Office platforms to provide enhances analytics and tooling for Traders and Front Office teams To be a successful applicant, you will need: Extensive experience of Software More ❯

Front Office Python Developer Trading Systems Orbis are proudly working with a global Trading firm who are redefining how data and technology shape the future of their market, and are fully embracing GenAI across the enterprise. They are looking for a Front Office Software Engineer with excellent Python experience to be at the forefront of this evolution. … As a Front Office Python Software Engineer, this is an incredible opportunity to work side-by-side with Traders, building high-performance systems and innovative tools contributing to PnL, by helping Traders understand markets, forecast movements, and act with confidence. In this role, you will be responsible for: Partnering directly with Traders to design, build, and own production Trading … systems developed in Python Designing and developing solutions to analyse market data, manage trading positions, and support the models that drive front-office decision-making Designing cloud-native tools integrating with the Front Office platforms to provide enhances analytics and tooling for Traders and Front Office teams To be a successful applicant, you will need: Extensive experience of Software More ❯

Senior Software Developer Python/Ruby Location: London (2/3 days per week on-site) Rate: Up to 650/day (Inside IR35 12-month Contract) A major UK government department is seeking an experienced Senior Software Developer to play a key role in the redevelopment of a critical national open data platform. This is a … best practices. Representing the team in internal and external technical discussions and communities. What Youll Bring To thrive in this role, you will need: Expert-level coding ability in Python or Ruby, plus experience with at least one other modern language. A strong track record of developing and delivering production-grade web services. Experience working with Git and writing More ❯

Senior Software Developer – Python/Ruby Location: London (2/3 days per week on-site) Rate: Up to £650/day (Inside IR35 – 12-month Contract) A major UK government department is seeking an experienced Senior Software Developer to play a key role in the redevelopment of a critical national open data platform. This is a … practices. Representing the team in internal and external technical discussions and communities. What You’ll Bring To thrive in this role, you will need: Expert-level coding ability in Python or Ruby, plus experience with at least one other modern language. A strong track record of developing and delivering production-grade web services. Experience working with Git and writing More ❯

Title: Software Engineer (Python Developer) Location: London, UK Employment Type: Contract Duration: Long Term Overview: We are seeking a skilled Software Engineer with strong programming expertise in Python and hands-on experience in data manipulation, analysis, and software engineering best practices . The ideal candidate will be passionate about clean, maintainable code and capable of building scalable … efficient solutions. Key Responsibilities: Develop, test, and maintain Python-based applications and scripts. Perform data cleaning, transformation, and analysis using Pandas and NumPy . Design and implement modular, reusable, and testable code following best practices. Collaborate with cross-functional teams to integrate data and software components. Utilize version control tools (Git) for code collaboration and management. (Optional) Build and … enhance interactive dashboards using Plotly Dash for data visualization. Work with REST APIs to fetch and send data between front-end and back-end systems. Required Skills & Experience: 1. Python Programming Strong understanding of functions, classes, and object-oriented programming (OOP) . Experience with list comprehensions, generators, and error handling . Proficiency in managing virtual environments and package dependencies More ❯

Title: Software Engineer (Python Developer) Location: London, UK Employment Type: Contract Duration: Long Term Overview: We are seeking a skilled Software Engineer with strong programming expertise in Python and hands-on experience in data manipulation, analysis, and software engineering best practices . The ideal candidate will be passionate about clean, maintainable code and capable of building scalable … efficient solutions. Key Responsibilities: Develop, test, and maintain Python-based applications and scripts. Perform data cleaning, transformation, and analysis using Pandas and NumPy . Design and implement modular, reusable, and testable code following best practices. Collaborate with cross-functional teams to integrate data and software components. Utilize version control tools (Git) for code collaboration and management. (Optional) Build and … enhance interactive dashboards using Plotly Dash for data visualization. Work with REST APIs to fetch and send data between front-end and back-end systems. Required Skills & Experience: 1. Python Programming Strong understanding of functions, classes, and object-oriented programming (OOP) . Experience with list comprehensions, generators, and error handling . Proficiency in managing virtual environments and package dependencies More ❯

Senior Backend Developer (Python) Kings Cross, London- Onsite 2/3 days a week 6 month contract Inside of IR35 £750 - £800 per day My client is seeking a highly skilled software engineer to join its AI/ML team, contributing to the development of cutting-edge applications that accelerate drug discovery and enable personalised therapies. The ideal … candidate will have strong Python backend development experience, preferably with FastAPI, and be proficient in cloud-native infrastructure (Google Cloud preferred), DevOps practices, and automated testing. While a background in life sciences is a plus, a passion for improving healthcare through technology is essential. The role involves integrating AI/ML components into scalable web applications, collaborating across technical … teams, and continuously improving software quality and performance. Key responsibilities Back end development for a Python web application Integration of AI/ML components with frontend, backend, data and compute infrastructure Responsible for high quality software implementations according to best practices, including automated test suites and documentation Develop, measure, and monitor key metrics for all tools and services and More ❯

Senior Backend Developer (Python) Kings Cross, London- Onsite 2/3 days a week 6 month contract Inside of IR35 750 - 800 per day My client is seeking a highly skilled software engineer to join its AI/ML team, contributing to the development of cutting-edge applications that accelerate drug discovery and enable personalised therapies. The ideal … candidate will have strong Python backend development experience, preferably with FastAPI, and be proficient in cloud-native infrastructure (Google Cloud preferred), DevOps practices, and automated testing. While a background in life sciences is a plus, a passion for improving healthcare through technology is essential. The role involves integrating AI/ML components into scalable web applications, collaborating across technical … teams, and continuously improving software quality and performance. Key responsibilities Back end development for a Python web application Integration of AI/ML components with frontend, backend, data and compute infrastructure Responsible for high quality software implementations according to best practices, including automated test suites and documentation Develop, measure, and monitor key metrics for all tools and services and More ❯

Front Office FX Trading Technology - Global Banking & Markets A leading global investment bank is seeking a Python Developer to join its Front Office FX Options Technology team. This is a high-impact role where you’ll work closely with traders and developers to build cutting-edge, high-performance trading systems - leveraging big data and algorithmic models to analyse … pipelines, and market connectivity. Integrate trading systems with upstream trade execution and regulatory platforms. Work within an agile team delivering high-priority solutions under tight deadlines. Skills & Experience Strong Python (or OO language: Java, C#, C++) development experience. Solid understanding of data structures, algorithms, and design patterns. Experience with SQL/NoSQL, APIs, and distributed systems. Familiarity with agile More ❯

Front Office FX Trading Technology - Global Banking & Markets A leading global investment bank is seeking a Python Developer to join its Front Office FX Options Technology team. This is a high-impact role where you’ll work closely with traders and developers to build cutting-edge, high-performance trading systems - leveraging big data and algorithmic models to analyse … pipelines, and market connectivity. Integrate trading systems with upstream trade execution and regulatory platforms. Work within an agile team delivering high-priority solutions under tight deadlines. Skills & Experience Strong Python (or OO language: Java, C#, C++) development experience. Solid understanding of data structures, algorithms, and design patterns. Experience with SQL/NoSQL, APIs, and distributed systems. Familiarity with agile More ❯

A Python Backend Engineer is needed to join growing software house in London who specialise in helping businesses reduce wasteful processes, costs and energy; and improve their ROI. sustainability meets profitability. 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 Backend Python Engineers, Data Scientists, and financial experts, who are building the next generation of financial tools. If you're an experience Software Engineer whose passionate about Python, excited by financial technology, and wants to solve complex problems, this could be for you. As a Python … in a supportive, fast-paced startup environment. Requirements: 1st class - 2;1 Degree in Comp Sci or STEM subject from a Top ranked University 3+ years of experience in Python development Tech: Python, FastAPI, Pydantic, PostgreSQL, Numpy, Pandas, AWS DevOps tools: Kubernetes, Docker,Terraform, Jenkins Very strong software engineering principles Enthusiasm for startup environment and cross-functional teams More ❯

A Python Backend Engineer is needed to join growing software house in London who specialise in helping businesses reduce wasteful processes, costs and energy; and improve their ROI. sustainability meets profitability. 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 Backend Python Engineers, Data Scientists, and financial experts, who are building the next generation of financial tools. If you're an experience Software Engineer whose passionate about Python, excited by financial technology, and wants to solve complex problems, this could be for you. As a Python … in a supportive, fast-paced startup environment. Requirements: 1st class - 2;1 Degree in Comp Sci or STEM subject from a Top ranked University 3+ years of experience in Python development Tech: Python, FastAPI, Pydantic, PostgreSQL, Numpy, Pandas, AWS DevOps tools: Kubernetes, Docker,Terraform, Jenkins Very strong software engineering principles Enthusiasm for startup environment and cross-functional teams More ❯

Python Architect London (Onsite, Full-time) Competitive Salary + Bonus Were working with a high-performing global investment firm thats rebuilding its technology foundations and theyre looking for a Python Architect to help design and deliver the systems that power their research, data, and risk functions. This is a chance to join a small, elite engineering team where … across research, data, and operations. Develop scalable data flows and microservices that connect critical systems. Own architectural decisions around reliability, scalability and cloud infrastructure . Work hands-on with Python, Snowflake, Kubernetes, Docker, and Dash . Partner closely with quantitative analysts and business teams to deliver real-world solutions. What Were Looking For Proven experience in Python engineering More ❯

Python Architect – London (Onsite, Full-time) Competitive Salary + Bonus We’re working with a high-performing global investment firm that’s rebuilding its technology foundations — and they’re looking for a Python Architect to help design and deliver the systems that power their research, data, and risk functions. This is a chance to join a small, elite … across research, data, and operations. Develop scalable data flows and microservices that connect critical systems. Own architectural decisions around reliability, scalability and cloud infrastructure . Work hands-on with Python, Snowflake, Kubernetes, Docker, and Dash . Partner closely with quantitative analysts and business teams to deliver real-world solutions. What We’re Looking For Proven experience in Python More ❯

Python Developers | London | £100,000 – £170,000 + Equity You'll be joining a team that are making it easier for large industries to bring AI into production. The tech focuses on scaling, reliability, and making AI systems practical. The team is early but moving fast with strong backing and real commercial momentum. The Role You will build the … decisions as part of a small, senior team that values initiative over hierarchy. What You Will Bring 2+ years of experience building production grade systems Strong coding background in Python/Fast API However, any modern language is OK (we just want amazing Developers!) Experience with databases, APIs, and distributed computing Exposure to cloud infrastructure (AWS preferred) and IaC More ❯