1 to 25 of 26 Python Software Engineer Jobs in London

Python Software Engineer/Developer London/WFH to £80k Do you have strong backend Python software development experience? You could be progressing your career at the world's most advanced cybersecurity technology business that uses AI technology to protect clients across the globe from … advanced cyber threats, working alongside a team of friendly and supportive people and enjoying a host of perks and benefits. As a Python Software Engineer within the R&D team you'll work on a new Greenfield product to combat the threat of AI based security attacks. ...

Senior Software Engineer/Principal Software Engineer- C++, Python - Financial/Banking. Candidates will have a minimum 8+ years C++ experience and excellent knowledge of Python -coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange … 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 ...

Backend Software Engineer/Developer (Python LLM MLOps) London/WFH to £90k Are you an experienced Backend Software Engineer with strong Python skills and a good knowledge of AI, LLMs and agentic coding? You could be progressing your career at a global finance … your family, including mental health Travel Insurance Charitable giving Gym membership for you and your family Flexible holiday scheme Your role: As a Backend Software Engineer you'll design and develop autonomous AI systems integrating multi-modal LLMs (text, image, audio, video), design agentic workflows enabling AI agents ...

Lead Software Engineer/Developer London/WFH to £120k Are you a skilled a backend focused Python technologist with team leadership experience? You could be progressing your career at a well-funded and profitable FinTech start-up. As a Lead Software Engineer … Central London office with flexibility to work from home twice a week in a hybrid model. About you: You're an experienced Software Engineer with Python expertise and a strong knowledge of software engineering best practices and full SDLC experience You have team leadership experience, happy ...

Senior 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 ...

Senior Software Engineer (Python) Hybrid London (2 days/week) Up to £100,000 + Benefits We're hiring a Senior Software Engineer to play a key role in building and scaling a high-impact ad-fraud prevention platform used globally. This is a senior … contribute to strong team practices Collaborate closely with Product, Design, and Data teams What we're looking for: Strong experience as a Senior Software Engineer in modern product teams Proven ability to design and deliver scalable, reliable systems Experience operating production services Strong coding, code review, and technical ...

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 ...

this is wrong and we are on a mission to fix it, triggering the future of hardware design. We are creating an entirely new software engine for circuit boards, that takes as inputs the requirements of a circuit board and automatically outputs a complete design, ready for manufacture. … 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 with a highly-functioning team of software, electronics, algorithm engineers and product managers. Responsibilities Collaborate with the product team ...

Python Software Engineer/Developer London/WFH to £80k Do you have strong backend Python software development experience? You could be progressing your career at the world's most advanced cybersecurity technology business that uses AI technology to protect clients across the globe from ...

Software Engineer (Python/React) Location: London (Hybrid) Experience: 1-5 Years Sector: Elite FinTech Firm Compensation: Up to £140,000 Base + Industry Leading Bonus + Comprehensive Package A leading FinTech firm in London is seeking a talented Software Engineer to join its growing … could be working on: • Some of the world’s most performant ETL pipelines that deal with billions of data points every second • Software solutions/products with scale, reliability and latency considerations in mind • R&D work for functional programming (either pre-existing languages (such as Rust and Erlang ...

Senior Software Engineer [Python], FI Hedge Fund, London [Onsite] We are working with a fast-growing fixed income hedge fund who are looking to hire an experienced, data-oriented software engineer to join their lean but evolving team in London. There is a subtle buzz … role, you’ll operate across the business, including collaborating closely with PMs, Traders, Quants to build and scale the firm’s core data and software platforms, owning everything from data pipelines and market feeds to internal front office tools and applications. This hire will also act as the technical ...

SOFTWARE ENGINEER ( DJANGO/PYTHON ) - SECURITY UK FULLY REMOTE Up to £80,000 + Bonus + Share Scheme + Staff Benefits SECURE has Strategically Partnered with a multi-award-winning, Software-Based Organisation at the forefront of Pre-Emptive Exposure Management. As a market leader backed … Vulnerability Research & Automated Red Teaming. Role Overview: Step in as the engine behind their Intelligence Operations. You will build and scale the high-throughput Python ( Django ) Backend that Collects, Processes & Analyses Large Volumes of Threat Telemetry. By operationalising Complex Data Pipelines & Integrating LLM Workflows, you will directly fuel ...

Backend Software Engineer/Developer (Python LLM MLOps) London/WFH to £90k Are you an experienced Backend Software Engineer with strong Python skills and a good knowledge of AI, LLMs and agentic coding? You could be progressing your career at a global finance ...

Backend Software Engineer - Python Location: London (in-office 4 days per week, non-negotiable) Type: Full-time Reports to: Head of Engineering Salary: £90,000-£105,000 + benefits Are you a Senior Backend Engineer who thrives on designing and scaling complex systems? Do you enjoy … from architecture through to production, while contributing to the overall technical direction. Key Responsibilities Design, build, and own backend services and data pipelines in Python Develop and operate streaming systems using Kafka or similar technologies Work with graph-based data structures and algorithms to support analytics and decision-making ...

Backend Software Engineer - Python Location: London (in-office 4 days per week, non-negotiable) Type: Full-time Reports to: Head of Engineering Salary: £90,000-£105,000 + benefits Are you a Senior Backend Engineer who thrives on designing and scaling complex systems? Do you enjoy ...

Founding AI Engineer | Python, Async, LLMs, TypeScript, Cloud | £100k-£160k + Equity | London (Onsite) Build AI products from scratch as part of a founding team. Great opportunity to join a YC-backed AI startup building autonomous voice agents that automate customer interactions, scheduling, and operations for real-world … company is building production AI systems that directly impact how businesses operate, focusing on real-world execution, not experimentation. As a Founding AI Engineer, you'll build and ship core product features across Python, TypeScript, cloud infrastructure, and event-driven systems, taking ownership from idea to production. This ...

Lead Software Engineer/Developer London/WFH to £120k Are you a skilled a backend focused Python technologist with team leadership experience? You could be progressing your career at a well-funded and profitable FinTech start-up. As a Lead Software Engineer ...

Senior Software Engineer – AI Startup – Up to 160k 🚀🧠 💰 Salary: £70,000 - £160,000 + meaningful equity 🏙️ Location : London, flexible working arrangements, ideally 2/3 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 ...

Senior C++ Software Developer, Python - Financial/Banking Candidates will have 7+ 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, Fix Protocol with some … 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 ...

Lead Software Engineer is required by this B2B Fintech business as they look to improve their product platform offering and build on their client success. You'll be expected to take more technical leadership than managerial responsibilities, promoting better engineering practice, driving technology improvements and leading from … strong hands-on perspective. This is a web-based reporting platform written in Python and Django, and your decisions around the technical direction will be critical in the future success of the business and how they continue to deliver to their clients. If the opportunity to take responsibility ...

SOFTWARE ENGINEER ( DJANGO/PYTHON ) - SECURITY UK FULLY REMOTE Up to £80,000 + Bonus + Share Scheme + Staff Benefits SECURE has Strategically Partnered with a multi-award-winning, Software-Based Organisation at the forefront of Pre-Emptive Exposure Management. As a market leader backed ...

Senior 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 ...

developing an award-winning SaaS analytics platform used to assess over £200bn of non-life insurance business? This is a mid to senior level software engineering role focused heavily on production-grade Python development. This is not a web-facing CRUD or API-endpoint development role. The core … . The role: Technical Challenge: Take ownership of performance bottlenecks involving 4GB+ datasets. Architectural Input: Taking new features from conception to deployment Production-Grade Python: Apply software engineering best practices including OOP, unit testing, and CI/CD. Mathematical/Financial Logic: Translating complex analytical, mathematical, or financial ...

Responsibilities Design, develop, test, and support robust, production-ready software solutions , adhering to modern engineering best practices. Build and maintain microservices-based systems , with a strong focus on scalability, resilience, and performance. Develop and optimise scalable data pipelines , supporting both batch and streaming workloads, using technologies such as Apache … Spark . Work extensively with data technologies , leveraging Python and SQL to deliver high-quality analytical and data-driven solutions. Lead the design and delivery of data-centric applications , translating complex business and analytical requirements into well-architected technical solutions. Implement and integrate large language models (LLMs) , including: Utilising ...

platform and make a real difference to our customers. What you’ll do Design, build, and ship reliable backend services and APIs in Python (Flask) that power core product functionality. Own features end-to-end: data modelling (Postgres), API design, testing, production rollout and ongoing improvements. Help uphold strong … shipping, and maintaining a high-quality codebase. What we’re looking for 5+ years experience building and operating production backend systems. Strong experience with Python, and hands-on use of Flask (or similar frameworks). Solid understanding of Postgres (schemas, migrations, query performance, transactions). Experience designing and maintaining ...