1 to 25 of 45 Python Software Engineer Jobs in London

Python Software Engineer with key skills in python, Typescript and an understanding of data pipelines is sought by a market leading SaaS start up based in the UK. With recent investment this Python Software Engineer will work closely with the Head of Engineering … months. As such proven experience working in a product led, fast paced start up would be hugely beneficial. This role would suit an experienced software engineer who relishes using the latest technology to build greenfield solutions that quickly solve business problems with the ability to understand and translate … business requirements into technical solutions. This Python Software engineer should have most of the following key skills - Strong commercial python development experience - Solid Typescript skills - A well rounded front end skill set - JavaScript, React, Vue, express, angular etc - A product focussed, business first approach to engineering More ❯

Job Title: Python Software Engineer Client: Elite Hyper Scaling Fintech Salary: £70,000 - £225,000 Base (+ Bonus) Location: London/Hybrid Role: My client is looking for an experienced Python Software Engineer to join their rapidly expanding development team, leveraging Python to … of professionals in an intellectually stimulating environment. Responsibilities: Design, implement, and optimize trading algorithms, order execution systems, and real-time data processing tools using Python to support front office trading strategies. Work closely with traders and quant teams to understand requirements, translate them into technical solutions, and enhance the … s functionality and performance. Focus on improving system performance, minimizing latency, and ensuring high availability of trading systems, with a strong emphasis on efficient Python coding practices. Develop tools for real-time monitoring, risk assessment, and analytics, ensuring the systems can handle large volumes of market data and provide More ❯

Job Title: Python Software Engineer Client: Elite Hyper Scaling Fintech Salary: £70,000 - £225,000 Base (+ Bonus) Location: London/Hybrid Role: My client is looking for an experienced Python Software Engineer to join their rapidly expanding development team, leveraging Python to … of professionals in an intellectually stimulating environment. Responsibilities: Design, implement, and optimize trading algorithms, order execution systems, and real-time data processing tools using Python to support front office trading strategies. Work closely with traders and quant teams to understand requirements, translate them into technical solutions, and enhance the … s functionality and performance. Focus on improving system performance, minimizing latency, and ensuring high availability of trading systems, with a strong emphasis on efficient Python coding practices. Develop tools for real-time monitoring, risk assessment, and analytics, ensuring the systems can handle large volumes of market data and provide More ❯

Software Engineer/Developer (Python Django API) London to £75k Are you a Python technologist looking for an opportunity to progress your career? You could be joining a growing tech company, working on the core SaaS Accounts Payable software that uses AI to enable clients … to save money by preventing double payments and avoiding clawback. As a Software Engineer you'll join a small team and have a variety of projects and responsibilities from writing code to manage incoming data, collaborating with Data Scientists to analyse huge data sets to writing RESTful APIs … office based in a trendy area of East End London 2-3 days a week. About you: You have backend development experience with strong Python and Django skills (will also consider Flask or FastAPI if you're happoy to use Django going forward) You have experience with RESTful APIs More ❯

Bleeding edge quant hedge fund client who operate technologically at the top of the market are currently seeking an experienced Python Software Engineer/Developer. In this high performance computing team, you will be responsible for building automated software solutions which are used across the trading … business. It is expected the successful candidate will be an expert Python engineer with functional experience of how market connectivity works with the applications they are developing Strong colleague network within this environment to take your initial experience to an elite level. Ideally Computer Science Degree or similar … discipline Good commercial experience in Python Software Engineering Working in a scaled, performance based software environment building efficient, reliable/high-availability and fast applications An interest in learning Rust programming alongside Python Linux knowledge advantageous Strong interest in working for a top end, high performance More ❯

Bleeding edge quant hedge fund client who operate technologically at the top of the market are currently seeking an experienced Python Software Engineer/Developer. In this high performance computing team, you will be responsible for building automated software solutions which are used across the trading … business. It is expected the successful candidate will be an expert Python engineer with functional experience of how market connectivity works with the applications they are developing Strong colleague network within this environment to take your initial experience to an elite level. Ideally Computer Science Degree or similar … discipline Good commercial experience in Python Software Engineering Working in a scaled, performance based software environment building efficient, reliable/high-availability and fast applications An interest in learning Rust programming alongside Python Linux knowledge advantageous Strong interest in working for a top end, high performance More ❯

Senior Software Engineer - Fixed Income, Python Senior Software Engineer - Fixed Income, Python Apply locations London, Warwick Court time type Full time posted on Posted 2 Days Ago job requisition id 74911 There is a place for you at T. Rowe Price to grow, contribute … us and grow your career with us. The T. Rowe Price Fixed Income Front Office Investments Technology team is looking for an accomplished Senior Software Engineer to build out a suite of next-generation n-tier, native cloud-based applications. In this role, you will be part of … the Fixed Income Front Office software engineering team whose mission is to enhance and develop new capabilities needed by our Portfolio Managers, Analysts, and Quants using modern web/cloud technologies. More specifically, this role is within the Fixed Income Portfolio Management Decision Support team (PMDS) - focused on delivering More ❯

Job Title: Mid-Level Python Software Engineer Location: Hybrid - London Employment Type: Full-time Team: Engineering Reports To: Lead Software Engineer/Engineering Manager About Us Were a fast-moving fintech company on a mission to [insert your mission e.g., "make financial services more accessible … value clean, maintainable code, healthy team dynamics, and delivering tangible business value without unnecessary complexity. If you love solving real-world problems, writing thoughtful Python code, and collaborating with others in a calm, humble, and technically curious environment, wed love to hear from you. What Youll Do Design, build … and maintain Python services that power critical financial workflows. Work with modern data processing tools like pandas and polars to transform and analyze large datasets. Build async Python services using asyncio , and develop event-driven systems integrating AWS services (Lambda, SQS, EventBridge, ECS, etc.). Write reliable, maintainable More ❯

Job Description Senior Software Engineer with Python and Java Our Client is looking to recruit brilliant Software Engineer with upwards of 5 to 10 years solid proven track record of developing complex applications with Python coupled with Machine Learning and ideally Go. We're … looking to recruit initially 2 excellent Software Engineers to work with an existing team of 4 software developers on a very large strategic consulting engagement within the Life Sciences industry. So if you any experience with the Life Sciences domain - then the Client would be very interested to … see your profile. Must be 100% trustworthy with real integrity - this is a highly sensitive project. Key skills: Python, Machine Learning, Java The Client would like to see solid expertise of working with and developing complex applications with Java. Excellence is vital. Ideally have security clearance. The Client has More ❯

Python Engineer Trading £150,000 Plus Bonus Our client is one of the largest Quant trading firms globally. The role sits within a trading team on the bleeding edge of technology as well as execution. This is an environment of science and intellectuals. The firm is known globally … in-house infrastructure and improve productivity Write performance sensitive code and user-friendly APIs to facilitate access to our in-house data analysis infrastructure Python Engineers Must Have: 5+ years of experience building demanding, live systems in Python In-depth knowledge of Python and keeps up with … current standards Up-to-date knowledge of the Python ecosystem: third party libraries, packaging in-built Python libraries Solid understanding of data structures Familiarity with Github Actions Familiarity with Linux You will be joining a progressive and exciting company committed to excellence. They offer an excellent working environment More ❯

Python Engineer Trading £150,000 Plus Bonus Our client is one of the largest Quant trading firms globally. The role sits within a trading team on the bleeding edge of technology as well as execution. This is an environment of science and intellectuals. The firm is known globally … in-house infrastructure and improve productivity Write performance sensitive code and user-friendly APIs to facilitate access to our in-house data analysis infrastructure Python Engineers Must Have: 5+ years of experience building demanding, live systems in Python In-depth knowledge of Python and keeps up with … current standards Up-to-date knowledge of the Python ecosystem: third party libraries, packaging in-built Python libraries Solid understanding of data structures Familiarity with Github Actions Familiarity with Linux You will be joining a progressive and exciting company committed to excellence. They offer an excellent working environment More ❯

Senior Software Engineer – AI Startup – Up to 120k Salary: £70,000 - £120,000 + meaningful equity ️ Location : London, flexible working arrangements, ideally 1/2 days in office Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite … world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: Build and ship high-impact software Work on AI/LLM-powered automation tools used in production ️ Help shape scalable systems and infrastructure Work collectively across teams to push the … stack ✅ Understand the working dynamics of a fast paced start-up If this role sounds like it could be of interest, apply now! Senior Software Engineer – AI Startup – Up to 120k More ❯

Senior Software Engineer – AI Startup – Up to 120k 🚀🧠 💰 Salary: £70,000 - £120,000 + meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 1/2 days in office 💻 Tech Stack : Python, Flask, FastAPI, React, TypeScript, GCP (Backend Leaning) Our y-combinator backend client are building an elite … world problems with the latest in AI and LLMs, this role is for you. In this role, you’ll: 🔧 Build and ship high-impact software 🧠 Work on AI/LLM-powered automation tools used in production 🏗️ Help shape scalable systems and infrastructure 🌍 Work collectively across teams to push the … stack ✅ Understand the working dynamics of a fast paced start-up If this role sounds like it could be of interest, apply now! Senior Software Engineer – AI Startup – Up to 120k More ❯

Role: Software Engineer (Python/C++) Salary: Up to £200k 1st Year Compensation (Pure Cash) Location: London (Flex-Remote Options) Skills: Python and/or C++ expertise preferred This firm is an elite company with high tech standards who have previously set tech world records. They … world’s most performant ETL pipelines that deal with billions of data points every second • One of the most successful observability platforms worldwide • Building software solutions/products with scale, reliability and latency considerations in mind • R&D work for functional programming (either pre-existing languages (such as Rust … Learning Infrastructure and tweaking research models • Working directly on Quant Logic/Research models for Alpha Generation What else is in it for you? • Software Engineers are treated as the company's #1 asset • Low attrition rate; people working there love what they do on a daily basis! • Very More ❯

Role: Software Engineer (Python/C++) Salary: Up to £200k 1st Year Compensation (Pure Cash) Location: London (Flex-Remote Options) Skills: Python and/or C++ expertise preferred This firm is an elite company with high tech standards who have previously set tech world records. They … world’s most performant ETL pipelines that deal with billions of data points every second • One of the most successful observability platforms worldwide • Building software solutions/products with scale, reliability and latency considerations in mind • R&D work for functional programming (either pre-existing languages (such as Rust … Learning Infrastructure and tweaking research models • Working directly on Quant Logic/Research models for Alpha Generation What else is in it for you? • Software Engineers are treated as the company's #1 asset • Low attrition rate; people working there love what they do on a daily basis! • Very More ❯

Software Engineer – Energy and Trading Sector Location: London (2 days per week) Rate: Inside IR35 as provided by the contractor About the Role: We are seeking an experienced Software Engineer to join our global client's dynamic team in the Trading Sector. This role will involve … working closely with both technical and business stakeholders to deliver innovative software solutions that support key trading operations and cloud-based applications. Key Responsibilities: Work with both technical and business stakeholders to understand and define requirements. Collaborate with the Solution Architect to design and document the target-state solution. … Raise any risks and dependencies with the Project Manager suggesting mitigations where appropriate. Required Technical Skills: Designing and building scalable systems in the cloud. Python: building and testing REST-ful API services. (C# a bonus but not mandatory) Automated testing: unit, integration, component end-to-end, and performance testing More ❯

We’re currently looking for a Python experienced software engineer to build state of the art AI/ML tools which support my clients Technology focused operations. This role will be an initial 12-month contract working on a Hybrid basis from my clients London HQ. Job … Details: Design and build state-of-the-art software products with AI/ML at their core Design and build infrastructure and software to support the full machine learning lifecycle Build on modern cloud infrastructure Work on challenging large-scale scenarios Required Skills & Experience: Strong background in Computer … Science, Software Engineering, ML Ops, Artificial Intelligence or related technical field. 5+ years of hands-on professional experience in software engineering Experience in at least one of: deploying ML models to production, ML Ops, building AI Agents, integrating with LLMs. Up to date knowledge of state of the More ❯

We’re currently looking for a Python experienced software engineer to build state of the art AI/ML tools which support my clients Technology focused operations. This role will be an initial 12-month contract working on a Hybrid basis from my clients London HQ. Job … Details: Design and build state-of-the-art software products with AI/ML at their core Design and build infrastructure and software to support the full machine learning lifecycle Build on modern cloud infrastructure Work on challenging large-scale scenarios Required Skills & Experience: Strong background in Computer … Science, Software Engineering, ML Ops, Artificial Intelligence or related technical field. 5+ years of hands-on professional experience in software engineering Experience in at least one of: deploying ML models to production, ML Ops, building AI Agents, integrating with LLMs. Up to date knowledge of state of the More ❯

Software Development Engineer in Test (Python) At SPD Technology, we bring together a team of like-minded people who are driven by the desire to bring value through their work, united in their commitment to high performance and delivering custom, cutting-edge tech solutions that drive clients … encourage professional and personal growth, and foster a supportive and flexible work environment where everyone's contribution is welcomed. We are looking for a Software Development Engineer in Test to join us as part of our team. About the role The person in this role will help us … solid-state elements to bring single molecule-based sequence detection to scale. Developing this unique platform requires expertise across a range of fields including Software Engineering, Bioinformatics, Computational Sciences, Electrical Engineering, Mechanical Engineering, Physics, Biology, Chemistry, and related fields. As a Senior Software Developer in Test, you will More ❯

critical medicines make it through trials and into the hands of those who need them much sooner. More about you You are an experienced engineer, with a track record of successfully leveraging the foundations of modern software engineering practices, with a passion for performance and reliability. You take … ownership of your work and see things through. You emphasise code quality and testing and are comfortable with high quality software practices (including code reviews, testing practices, and software design). You are excited by the opportunity to improve our Python-based ML framework's reliability and … part in our mission to deliver this goal! You will be working with the team developing our cutting-edge desktop application and its associated python backend. The app allows users to deploy, use, and build ML models collaboratively, as well as perform data analytics - all in a privacy-preserving More ❯

a quantitative hedge fund: they combine deep expertise in trading, technology, and data science to drive uncorrelated, high-quality investment returns. Their team of software developers and engineers work globally to deliver next-gen data pipelines. If you're a skilled Python developer who thrives in a collaborative … environment, I want to hear from you. Team: Developing software that directly shapes multi-billion-dollar trading decisions. Working alongside some of the best quants, traders, and engineers in the industry. At the cutting-edge of technology, they are building high-performance, large-scale data analysis pipelines. A data … and machine learning techniques. Global collaboration with offices in major financial hubs worldwide; cross-team cooperation. Role: Designing, developing, and delivering high-quality, maintainable software in modern Python for business-critical applications. Collaborating with stakeholders and colleagues to deliver innovative solutions. Leading high-level technical design discussions. Requirements More ❯

a quantitative hedge fund: they combine deep expertise in trading, technology, and data science to drive uncorrelated, high-quality investment returns. Their team of software developers and engineers work globally to deliver next-gen data pipelines. If you're a skilled Python developer who thrives in a collaborative … environment, I want to hear from you. Team: Developing software that directly shapes multi-billion-dollar trading decisions. Working alongside some of the best quants, traders, and engineers in the industry. At the cutting-edge of technology, they are building high-performance, large-scale data analysis pipelines. A data … and machine learning techniques. Global collaboration with offices in major financial hubs worldwide; cross-team cooperation. Role: Designing, developing, and delivering high-quality, maintainable software in modern Python for business-critical applications. Collaborating with stakeholders and colleagues to deliver innovative solutions. Leading high-level technical design discussions. Requirements More ❯

I am supporting a FinTech AI Start-up who are on the hunt for a passionate Senior Software Engineer to join their dynamic and rapidly growing team. This is your chance to make a significant impact on the future of their cutting-edge product. With a recent major … pivotal technical decisions that will shape the future of our product. Build the Future: Develop and implement groundbreaking features using our advanced tech stack: Python, TypeScript, React, AWS, PostgreSQL, and GenAI. Champion Quality: Ensure our product meets the highest standards of quality and scalability. Collaborate and Conquer: Work closely … with cross-functional teams to deliver exceptional solutions Requirements: Expertise: Deep experience with Python, TypeScript, React, AWS, PostgreSQL, and GenAI. Leadership: Proven ability to lead projects and teams in a fast-paced, innovative environment. Vision: Strong decision-making skills and a passion for driving excellence. Bonus Points: Experience in More ❯

I am supporting a FinTech AI Start-up who are on the hunt for a passionate Senior Software Engineer to join their dynamic and rapidly growing team. This is your chance to make a significant impact on the future of their cutting-edge product. With a recent major … pivotal technical decisions that will shape the future of our product. Build the Future: Develop and implement groundbreaking features using our advanced tech stack: Python, TypeScript, React, AWS, PostgreSQL, and GenAI. Champion Quality: Ensure our product meets the highest standards of quality and scalability. Collaborate and Conquer: Work closely … with cross-functional teams to deliver exceptional solutions Requirements: Expertise: Deep experience with Python, TypeScript, React, AWS, PostgreSQL, and GenAI. Leadership: Proven ability to lead projects and teams in a fast-paced, innovative environment. Vision: Strong decision-making skills and a passion for driving excellence. Bonus Points: Experience in More ❯

I am supporting a FinTech AI Start-up who are on the hunt for a passionate Senior Software Engineer to join their dynamic and rapidly growing team. This is your chance to make a significant impact on the future of their cutting-edge product. With a recent major … pivotal technical decisions that will shape the future of our product. Build the Future: Develop and implement groundbreaking features using our advanced tech stack: Python, TypeScript, React, AWS, PostgreSQL, and GenAI. Champion Quality: Ensure our product meets the highest standards of quality and scalability. Collaborate and Conquer: Work closely … with cross-functional teams to deliver exceptional solutions Requirements: Expertise: Deep experience with Python, TypeScript, React, AWS, PostgreSQL, and GenAI. Leadership: Proven ability to lead projects and teams in a fast-paced, innovative environment. Vision: Strong decision-making skills and a passion for driving excellence. Bonus Points: Experience in More ❯