26 to 45 of 45 Python Developer Jobs in the Thames Valley

Job Title: AVP – Python/Java Developer Location: London (Hybrid, 2 days in-office) Salary: Up to £120k About the Role: Join a brand-new team at a leading global investment bank, working at the heart of FX Data & Analytics. You’ll be building and supporting the core data and analytics layer that bridges downstream data sources and … upstream React-based UIs. The work is a blend of Python and Java, with a strong focus on Python for data transformation and analytics, and Java for connecting to front-end systems. Key Responsibilities: Develop and maintain the data and analytics layer (Python/Java) supporting business-critical dashboards. Collaborate closely with quant developers and business stakeholders. … in connecting to diverse data sources and running analytics. Help shape the technical direction of a new team and greenfield projects. What We’re Looking For: Strong experience with Python and Java (framework experience; not core Java/low-latency focus). E-Trading experience. Confident working with business users and stakeholders, including quants. Flexible on the Python More ❯

£70-90k + Benefits 2 days on site in North London 3 days remote I am recruiting for a talented and driven Senior Backend Engineer to join a dynamic team, focused on the creation and deployment of innovative software More ❯

GenAI Python Developers x4 Location: Hybrid/London Available as permanent or contract: Contract Rate: £400–£450 per day (Inside IR35, initial 6-9 months) Permanent Salary: £60k–£70k per annum GenAI | Python | Enterprise AI Platform - Build the core of a next-gen Generative AI ecosystem for a global finance services business. If you’re a strong Python … help architect, automate, and operationalise LLM-driven services at scale. What You’ll Be Doing: Building backend services and APIs that give secure, governed access to LLM capabilities Developing Python-based GenAI components, including prompt orchestration and evaluation tooling Integrating LLMs with enterprise systems, observability layers, and security frameworks Designing and maintaining CI/CD pipelines using Azure DevOps … shape platform patterns, reusable components, and clear documentation Troubleshooting performance issues across distributed systems and cloud services What You’ll Bring: 5+ years of backend engineering experience, with strong Python at the core Hands-on exposure to GenAI technologies and Large Language Models Practical understanding of LLM evaluation, prompt handling, and operational complexities A DevOps-first approach with experience More ❯

Quantitative Developer - £250,000 Total Compensation We are seeking strong Python focused Quantitative Developers with 4 years + of experience to join one of the most successful hedge funds in London. There are roles across multiple teams so they can find the best fit for your experience and skill set! The fund is currently building out a new More ❯

Backend Developer | London (3 days in the office) | Perm | Up to £80,000 p.a Peaple Talent have partnered with an outstanding client in London looking to recruit 2 Backend Developers to work within in-house business systems development team. You will be focused on driving continual improvement by specifying, developing, and testing key improvements to processes, integrations with key … taking ownership of tasks. Key Experience Required: Proven experience in enterprise software development and SDLC. Task orientated, able to work to fixed deadlines and SLAs. Previous development experience within Python, ideally with experience in Flask and REST APIs. Proficient with performance tuning, debugging, and secure coding practices. Strong Microsoft Azure Integration Services (e.g. LogicApps, ServiceBus, API Management etc). More ❯

Role: Back End Engineer – Python Location : London | Hybrid 2 days in office (Tuesday & Thursday) Package : Up to £70,000 + 10% Bonus + Private Medical + 8% Pension Join a well-established and fast-growing digital tech team within a major automotive services organisation. Originally launched as a startup, the business has evolved into a key player in the … be part of a collaborative, agile environment with a strong engineering culture and a modern tech stack. What You’ll Be Doing Designing and building robust backend services using Python and AWS Collaborating with cross-functional teams including Product, Design, and Sales Participating in code reviews, pair programming, and technical presentations Contributing to continuous improvement of Agile processes and … engineering practices Tech Stack Python | FastAPI | AWS | Django | PostgreSQL | OpenSearch | Kubernetes | Helm | Terraform | GitHub What We’re Looking For Strong Python development experience (any framework) Solid understanding of databases, OO design, and SOLID principles Passion for problem-solving and continuous learning Excellent communication and collaboration skills Perks & Benefits Hybrid working: 2 days/week (Tuesdays & Thursdays) 28 days More ❯

Senior Backend Engineer – Python | Django | FastAPI | AWS Build systems that power the future of AI Are you a high-agency backend engineer who thrives on solving complex problems at scale? Do you enjoy designing secure, production-grade systems and shipping robust APIs that make advanced technology accessible? Would you like to shape core infrastructure for AI-powered products in … your next big career move. About the Role Our client – an innovative, deep tech start-up based in the UK – is seeking a Senior Backend Engineer with expertise in Python (Django or Flask) to architect and deliver production-grade systems for cutting-edge AI products. This is a role for engineers who enjoy owning backend services end-to-end … ground up in a company that genuinely values engineering excellence. Why This Role is Great In this role, you’ll get to: Design scalable backend architecture using FastAPI and Python for high-performance workloads Build and maintain robust APIs following RESTful conventions and OpenAPI/Swagger standards Own the performance of PostgreSQL databases , including partitioning, indexing, and horizontal scaling More ❯

Senior Backend Engineer – Python | Django | FastAPI | AWS Build systems that power the future of AI Are you a high-agency backend engineer who thrives on solving complex problems at scale? Do you enjoy designing secure, production-grade systems and shipping robust APIs that make advanced technology accessible? Would you like to shape core infrastructure for AI-powered products in … your next big career move. About the Role Our client – an innovative, deep tech start-up based in the UK – is seeking a Senior Backend Engineer with expertise in Python (Django or Flask) to architect and deliver production-grade systems for cutting-edge AI products. This is a role for engineers who enjoy owning backend services end-to-end … ground up in a company that genuinely values engineering excellence. Why This Role is Great In this role, you’ll get to: Design scalable backend architecture using FastAPI and Python for high-performance workloads Build and maintain robust APIs following RESTful conventions and OpenAPI/Swagger standards Own the performance of PostgreSQL databases , including partitioning, indexing, and horizontal scaling More ❯

brightest when we tap into the many dimensions that thrive across over 21,000 difference-makers in our workplace. Work Experience Qualification Musts: Software development experience with JavaScript and Python Requires theoretical to advanced knowledge of solving problems with software. Experience solving problems through exercise of discretion and/or judgment, drawing from prior experiences, with analysis of the More ❯

Senior Backend Engineer (Python/Django) 🌍 ClimateTech Start-up | London Bridge | 3 days onsite 💰 £85–95k + early-stage equity Tired of being just another engineer? Here’s your chance to be the third backend hire at a fast-growing ClimateTech start-up making a real dent in global carbon emissions. At Minimum, you’ll: ✅ Solve hard technical challenges … up – shipping fast, making decisions that matter, and helping shape the product ✅ See direct impact – your code helps global organisations decarbonise What you’ll bring: 🔹 5–10 years with Python (ideally Django) 🔹 Strong problem-solving & system design skills 🔹 Start up mindset – fast, collaborative, comfortable with ambiguity 🔹 Passion for clean tech + building meaningful products Why join? ✨ £85–95k + … early-stage equity ✨ 28 days holiday ✨ The chance to leave your mark on a product that fights climate change Not just another Python role. This is your opportunity to build, shape, and solve with impact. 👉 Apply now (don’t worry if your CV isn’t perfect - we’ll sort that later). martin@mnrecruit.net 07859 911 079 - Happy for More ❯

We are currently seeking a Python Quant Developer to join a global energy trading firm. The role will sit in the Trading Optimisation team which is responsible for optimisation models across all desks, with a heavy emphasis on Power, Gas and LNG. In this role you will be responsible for implementing quantitative models to support a team of … analysts in development practices. There will also be a focus on modernising and enhancing some of the legacy applications which are used by the group, all of which are Python based. Key Skills Strong Object-Oriented Python Programming Understanding of Algo's and quant models. Excellent database knowledge, including SQL and MongoDB API Frameworks (Flask, FastAPI) Prior experience More ❯

in AI-driven automation software. You’ll join a team dedicated to pushing the boundaries of what’s possible in the trading world, using innovation to drive real results. Python AI/API Engineer – London What you will do Maintain and develop the AI offering, pioneering innovative approaches to achieve the company's vision. For example, integrating cutting-edge … and participating in code reviews. Keep abreast of new & developing technologies - championing/incorporating when appropriate. What you’ll need to succeed Minimum of 3+ years of experience with Python and major cloud providers (AWS, Azure, or GCP). Proven experience in building Rest APIs with frameworks such as Flask/FastAPI. Strong Experience in software development best practices More ❯

Work with our core technology stack, including Python , Linux (via WSL) , PostgreSQL , SQL Server , Databricks , and leverage both Azure and AWS cloud platforms. Design and implement advanced solutions for data ingestion , transformation , and large-scale orchestration of network I/O. Manage Infrastructure as Code and collaborate with infrastructure teams to deliver new features for CFC’s Engineering Platform. … Assess new data sources for completeness and accuracy to ensure suitability for specific applications. Contribute to CI/CD automation , optimizing for reliable, bug-free releases and an excellent developer experience. Maintain clear, high-quality documentation for both technical and non-technical audiences, starting with your code. Engage in a pairing-first development culture , sharing knowledge and learning from More ❯

costs and optimize return metrics. Who We're Seeking: We're on the lookout for a seasoned mid-level Software Engineer with up to 6+ years of hands-on Python experience. Familiarity with AWS Serverless and related technologies would be advantageous. Strengths in Pandas, Polars, Pytest, Postgres, and CI/CD is essential. If you're interested in Agile More ❯

Python Software Engineer needed to play a pivotal role in evolving our client's core platform — developing APIs, data workflows, and system integrations that power bespoke digital tools for major clients. You’ll work hands-on with Python, FastAPI, SQL, and orchestration tools, taking automation-generated code and making it production-ready. You’ll also be a champion … of AI-assisted development, helping to embed LLM-based workflows into day-to-day engineering processes. Key Responsibilities Build and enhance backend features and integrations (Python, FastAPI, gRPC, SQL). Extend auto-generated pipelines and front-end automation outputs. Develop connectors for APIs, files, and external systems. Integrate LLM-based capabilities with strong testing and monitoring practices. Lead best … practices for AI-assisted coding tools Collaborate closely with cross-functional teams including Data and Platforms About You Strong experience with Python backend and API development Skilled in SQL, data modelling, and workflow orchestration tools Daily user of AI-powered coding assistants, with a focus on efficiency and code quality Proven experience building and managing integrations (APIs, SFTP, SharePoint More ❯

Python Developers Wanted DV/SC Cleared | Python + TypeScript + JavaScript | AI-Focused | London HQ | Office-Hybrid Areti Group is exclusively hiring for one of the fastest-growing AI-driven tech scale-ups in London. They've grown 290% this year alone, just secured a major investment, and are scaling fast with plans to grow to 100+ … employees by year-end. Now, they’re hiring x8 Software Engineers (Python-focused) to help power the next phase of product development, experimentation, and platform scale. 💥 A Company That’s Not Just Growing – It’s Exploding This is your chance to join the foundational engineering team building the future of AI — and do it in a culture obsessed with … solving deep performance and scalability problems, and working alongside some of the smartest minds in tech. 🧠 What You’ll Be Working On: Designing and building scalable backend systems using Python Collaborating on full-stack features with TypeScript and JavaScript Creating and integrating RESTful and GraphQL APIs Working with Docker, Kubernetes, and cloud infrastructure (AWS) Developing within a microservices architecture More ❯

Senior Full Stack Developer - Hybrid - £650/day Outside IR35 | React | .NET | Python | AWS | API | Asset Management | Wealth Management Looking to speak with experienced Full Stack Developers to join a client of ours within the Asset space. They're looking to build a new division within the tech team and are looking for a Senior/Lead Full … days onsite in London Up to £650/day Outside IR35 Initial 6-month contract Key Skills Strong experience in full-stack development, with React, and .NET or Python Hands-on experience with AWS Strong API development and integration experience Experience with event-driven architecture Senior Full Stack Developer - Hybrid - £650/day Outside IR35 | React | .NET | Python More ❯

JOB DESCRIPTION POSITION: Python/Hx Renew Developer (Contract) LOCATION: London/Hybrid The Role: The pricing transformation project has seen five models go live in hx Renew so far and ambitious plans for 2025/26 to design, build, test and implement a number of new models in addition. This role will provide additional bandwidth to the … is built into hx Renew and kept up to date Development of wire frames in collaboration with the pricing actuaries and underwriters Coding the model logic within Renew using Python, translating actuarial concepts into code Collaborate with the appropriate stakeholders to ensure models built in Renew are designed with consideration for third-party system integrations (where applicable) Supporting the … Renew Assist in platform upgrades, patch deployment and tool migration as required by version update cycle Essential: Strong background working in the Insurance or Reinsurance sector High standard of Python 1+ years' experience building pricing models in Hx Renew Insurance and Lloyd’s knowledge Experience with Agile methodologies and working in sprints Strong understanding of software testing methodologies and More ❯

As a C# skilled Quant Developer , you'll work closely with portfolio managers, researchers, and data scientists to build and maintain the systems that drive our alpha-generating strategies. You’ll contribute to every part of the investment pipeline—from research tooling and data infrastructure to real-time trading systems. Key Responsibilities: Design, develop, and optimize high-performance trading … tools and data pipelines using C# and ideally Python Build research platforms that empower quantitative analysts and strategists Integrate and manage large, complex datasets from a variety of sources Collaborate with quants and PMs to implement and backtest trading models Ensure robustness and scalability in both real-time and batch environments What We’re Looking For: Strong programming experience More ❯

Job Title: Full Stack Developer Client: Leading FinTech Firm Compensation: Up to £180k + Bonus Location: London (Hybrid) Perks: Modern tech stack, flat team structure, collaborative culture, beautiful workspace We're working with a top-tier FinTech client who is looking for outstanding Full Stack Developers to join their high-performing team. You'll be building complex, enterprise-level … and efficient code that supports long-term scalability What We're Looking For: A degree in Computer Science or a related field Solid experience working as a Full Stack Developer Strong proficiency in React and Python Experience in the finance sector is a plus Excellent written and verbal communication skills A proactive approach to learning and a willingness More ❯