1 to 25 of 35 Python Engineer Jobs in the Thames Valley

Senior Software Engineer (Python) Hybrid London (1–3 days per week) Up to £80,000 + Benefits Are you a passionate Python engineer who thrives on building scalable, high-quality software? We’re working with a multi-award-winning digital agency , recognised as one of the Sunday Times Best Places to Work, that’s looking for … a Senior Software Engineer (Python) to help shape the next generation of their data-driven tools and products. 💡 Why this role? Work at the intersection of data, automation, and AI , delivering tools that drive measurable impact for global brands. Join a collaborative, innovative engineering culture where learning, experimentation, and technical excellence are at the core. Hybrid flexibility … a company that has won multiple Performance Marketing Employer of the Year awards — and genuinely invests in its people. 👩 💻 What you’ll be doing: Designing, building, and maintaining scalable Python-based applications and microservices . Developing internal tools and automation to support both client delivery and internal teams. Building, testing, and deploying RESTful APIs using frameworks like FastAPI or More ❯

Principal Python Engineer Salary: Up to £130k + bonus Location: London (3x per week) I’m working with a global financial organisation that’s investing heavily in its data and cloud technology platform, and they’re looking for a Python Engineer to join their growing Investment Technology team. You’ll be: Building clean, scalable Python … data, investment, and engineering teams Shaping best practices across CI/CD, DevOps, and agile development What we’re looking for: 5+ years’ experience in software engineering (3+ in Python) Needs to have experience within financial services, fintech, or investment tech! Strong AWS and data engineering experience Solid understanding of APIs, SQL/NoSQL, and modern software design A … problem-solver who enjoys working closely with the business If you’re a Python engineer who loves solving complex data challenges in a collaborative, cloud-first environment — drop me a message: daniel.wexler@sourcegroupinternational.com THIS ROLE DOES NOT PROVIDE SPONSORSHIP More ❯

Founding Python Engineer - VC Backed Start-Up - London Founding Python Engineer required for an early stage start-up building the future of AI-powered data processing. With a founding team coming from some of the most biggest names in the industry and backed by some of the most prestigious VCs and angel investors, this is an … at the ground floor of a company tackling some of the hardest technical challenges of AI. You'll have 2-5 years of professional Software Engineering experience Proficiency in Python Start-Up mentality: thrive in fast paced environments and hungry to take ownership Strong problem solving and collaboration skills Based in London and happy to work in office Why … join World class founding team and leading investors Competitive compensation + meaningful equity Opportunity to impact and take ownership from the very beginning We’re looking for Python Engineers who want to push boundaries, take ownership, and build at the edge of what’s possible in AI. Founding Python Engineer - VC Backed Start-Up - London More ❯

Senior Python Engineer | London We’re partnering with a high-growth AI startup that’s building intelligent automation systems designed to simplify complex, real-world operations. Their platform is already redefining how data, workflow, and human decision-making come together — and they’re scaling fast. If you’re excited by the idea of joining an elite engineering team … tackling deep technical problems in AI, automation, and scalable software systems, this could be the role for you. The Role: As a Senior Python Engineer , you’ll take ownership of backend design and development, helping to shape the architecture behind cutting-edge AI-driven platforms. You’ll work closely with AI and product teams to bring intelligent features … CI/CD, and documentation. Requirements: Strong academic foundation in Computer Science, Engineering, or related discipline. 3+ years of professional experience in backend or software engineering. Deep expertise in Python and frameworks such as FastAPI, Flask, or Django. Proven experience building and scaling APIs in cloud environments (GCP, AWS, or Azure). Strong understanding of version control, CI/ 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 Software Engineer, you will contribute to the design, development, and delivery of scalable, high-impact features across our platform. You’ll work closely with experienced engineers, product managers, and data scientists to build reliable systems that solve complex financial problems. This role offers an excellent opportunity to deepen your technical expertise, take ownership of individual projects, and More ❯

Python Software Engineer – High-Frequency Trading We're working with a high-frequency trading (HFT) firm that is looking to expand its technology team with a Python Software Engineer. This is an opportunity to join a trading firm operating at the cutting edge of global markets, where technology and speed are paramount. They build and run highly … systems that compete across major global exchanges. You’ll work on some of the most complex and rewarding engineering challenges in the financial technology space. The Role As a Python Software Engineer, you’ll collaborate with traders, quantitative researchers, and other developers to design, develop, and optimise trading infrastructure. You’ll be directly contributing to systems that operate … trading infrastructure components. Partner with cross-functional teams to improve tooling, observability, and automation. Deliver robust, production-ready solutions in a fast-paced environment. Requirements Min 2+ years of Python experience in a professional setting (HFT, trading, fintech, or other high-performance domains). Exposure to C++ or willingness to work in multi-language environments is a plus. Familiarity More ❯

Senior Software Engineer/Developer (Python FastAPI Data) London to £90k Are you a data centric Software Engineer with strong Python and SQL skills? You could be progressing your career in a senior, hands-on role at a fast growing, global Insurance Underwriting technology provider that focusses on developing a complex SaaS calculation platform for rapidly … growing Cybersecurity insurance markets. As a Senior Software Engineer you will design and develop data centric backend services for the core platform with a focus on Python coding and building FastAPIs within an Azure environment with Databricks. You'll participate in the design and implementation of advanced mechanisms for data ingestion, transformation, mass parallel orchestration of network IO … WFH: There's a hybrid work from home model with three days a week in the high spec London, City office with rooftop bar. About you: You have strong Python backend software engineering skills You have experience of building FastAPIs You have a good knowledge of public cloud services, they're using Azure but experience with AWS or GCP More ❯

Senior Software Engineer – Python/Hardware Systems Do you want to build real-world machines that handle complex tasks with speed and precision. This isn’t app or web dev, it’s embedded Python, hardware integration, and system-level thinking. We’re looking for someone who writes robust code, understands how systems behave in the wild, and … knows how to push hardware and software to work together seamlessly. What you’ll be doing: Writing Python to interface with motors, sensors, relays, power systems, and I/O Designing and maintaining services that run on embedded Linux (often headless) Working with serial protocols (UART, I2C, SPI), MQTT, CANbus, Modbus etc. Handling real-time constraints, task scheduling, and … hardware behaviour Building automated test rigs and simulation tools to catch bugs early Optimising code for performance, memory, and reliability at the edge Tech you might use or encounter: Python (asyncio, multiprocessing, struct, ctypes, pytest) Linux (systemd, udev rules, shell scripting, device trees) Microcontrollers and SBCs (Raspberry Pi, BeagleBone, STM32, ESP32) Networking and messaging: ZeroMQ, MQTT, TCP/UDP More ❯

Python Software Engineer - VC-Backed Startup - London We're looking for a Python Software Engineer to join a fast-growing startup developing a standout product in a high-potential, niche market. Backed by one of the world’s most prestigious venture capital firms , the company is gaining serious traction and building a world-class team. This … is a rare opportunity to play a key role at a pivotal stage of growth, where your Python skills will have direct and visible impact . What We’re Looking For 2+ years of professional experience with Python Strong academic background (BSc or MSc from a top Russell Group university) Passion for clean, maintainable code and solving real … from day one Join an elite team early and shape the tech culture and direction Competitive salary Flexible hybrid work opportunity - London Currently interviewing - apply now for immediate review. Python Software Engineer - VC-Backed Startup - London More ❯

API Engineer (Python, FastAPIs) - 2/3 days a week in London numi are proud to be partnered with a technology company on a mission to make supply chains transparent and sustainable. They use earth observation and environmental monitoring to create a global data asset that will radically change how supply chain risk is managed. Our partner is … with a tight-knit founding team. This is a chance to join a high-growth startup and have a pivotal impact on the company’s mission. As an API Engineer , you'll be critical in ensuring complex data is easily accessible and consumable. You will design, build, and maintain robust, scalable, and well-documented APIs that power internal and … external applications. What You'll Do Build the Engine: Design, develop, and maintain high-performance, scalable, and secure RESTful APIs using Python, with a strong focus on FastAPI . Integrate Data: Build efficient data querying mechanisms from structured databases. Champion Best Practices: Uphold high standards for clean, maintainable, and well-tested code. Who We're Looking For You are More ❯

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/ML components with backend, data … 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 Engineer - Python React 6 Month Contract Initially London - 3 days a week onsite £800 - £850 per day A leading Investment Manager is currently searching for a Full Stack Engineer to join them on an interim basis. They are looking for you to help expand their in-house Ai platform, creating new features and functionalities to … continually innovate the platform. This initiative is to help scale the platform across the business, having an agent per team They are looking for you to have experience in: Python Reacrt AWS MLOps Data Science An interest in Ai will be beneficial Please apply with an up to date CV to register your interest. More ❯

Freelance/FTC Opportunity – Python Automation Engineer We are looking for a Python Automation Engineer to join our team onsite at client’s London office on a freelance or fixed-term contract basis . The ideal candidate will have strong experience in mobile device automation (Android & iOS), solid programming skills, and a proactive, problem-solving mindset. … Responsibilities & Skills Required Mobile Automation: Proven experience working on Android and iOS device automation . Programming Expertise: Strong proficiency in Python and Java — must have. Frameworks: Hands-on experience with Python or Java-based frameworks such as PyNum, PyTest, PyUnit, Django, PyCharm , etc. — must have. Debugging Tools: Familiarity with Android and iOS debugging tools (e.g. ADB , Logcat ) — nice More ❯

Software Engineer – Award-Winning FinTech | Hybrid (London) Full-Time | Competitive Salary + Bonus + Benefits Join an award-winning FinTech that’s transforming how the world’s most sophisticated capital market participants harness and analyse data. This company delivers cutting-edge technology and analytics solutions that empower banks, asset managers, hedge funds and global exchange groups to optimise trading … a flat structure , genuine ownership, and all employees receive share options , ensuring you’re rewarded as the business grows. The Role This is an exciting opportunity for a Software Engineer looking to make an impact within a high-performance data and analytics environment . Working in the Data Distribution team , you’ll help design and develop systems that distribute … and technologies in the data engineering space. What We’re Looking For Essential: Degree in Computer Science, Engineering, or a related STEM subject. 2+ years’ experience as a Software Engineer (or Data Engineer with a software focus). Strong coding skills in Python and SQL . Understanding of distributed systems and Linux environments. Detail-oriented problem solver More ❯

Platform Engineer London/WFH to £100k Opportunity to progress your career at a hugely profitable High Frequency Trading firm that specialise in crypto markets, in a hands-on Platform Engineer role. As a Platform Engineer you will join a small team responsible for the 24x7x365 globally distributed ethical web scraping function, supporting a multi-region high … Central London with flexibility to work from home twice a week (please note there is an on-call requirement). About you: You have commercial experience as a Platform Engineer, DevOps Engineer or SRE within an HFT, low latency or web scraping environment You have strong bash or Python scripting skills You have multi-cloud experience (AWS … following: Containerization (Docker/Kubernetes), monitoring tools (Prometheus/Grafana/ELK stack/Splunk), IaC tooling (Terraform, Ansible etc.) What's in it for you: As a Platform Engineer you will receive a competitive package: Salary to £100k Bonus (c50% of base) Pension Hybrid working Career progression Apply now to find out more about this Platform Engineer More ❯

Software Engineer, AI, C Python, Oxford, COR7394 Are you a talented Software Engineer eager to explore the intersection of AI and manufacturing? This could be your opportunity to join a team helping shape next-generation tools using cutting-edge technology! The Position As a Software Engineer, you’ll work directly with a small team to develop … advanced analysis algorithms and integrate local large language models (LLMs) into real-world applications. You’ll focus on building robust software solutions using C++ or Python, contributing to Product Lifecycle Management integrations, and iterating on prompt-based AI applications. This is a hands-on role in a fast-moving environment. You’ll have the freedom to experiment, influence the … delivering practical solutions. This role is hybrid, with at least two days per week onsite in Oxford. Requirements Strong background in Mathematics, Physics, Computer Science Experience in C++ or Python software development Familiarity with Open Cascade C++ libraries Experience with Python LLMs or integration projects is beneficial Interested? Apply now! If you’re a curious, proactive Software Engineer More ❯

the great part is that you don't have to be as strong on the AI side as the true AI Engineers, your key impact will come on the Python side. Over time, you'll pick up the expert level skills in AI and vice versa for the others. So, with that, it'll be no surprise that you … re going to need to be a great Python software developer. Additionally, strong experience working with data and building microservices will also be a huge plus. Some experience with LLMs/GenAI will be necessary but you don't need to be an expert. You'll be joining a scale-up AI Consultancy who are working closely with clients … salary will be up to £130,000 plus a range of benefits that are continuously improving as the company grows. Want to build your AI skills whilst leveraging your Python development skills? Get in touch. No up-to-date CV required. More ❯

k + 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 solutions. As a Backend Engineer, you will work closely with cross-functional teams, including engineering, product management, design, and quality 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, 4/5 days per More ❯

Backend Engineer – London (Hybrid) Our client is a fast-growing software business delivering market-leading ticketing products to forward-thinking organisations worldwide. Their platform is used by hundreds of thousands of people and powers ticket sales for some of the world’s most prestigious live entertainment brands. They’re now looking for a Backend Engineer to play a … mentoring peers. Bringing passion, creativity, and technical expertise to every stage of the development process. Skills and experience needed: Proven experience building REST APIs with scalability in mind. Strong Python knowledge and ecosystem expertise. Proficiency in SQL and writing efficient queries. Experience with ORMs. Strong communicator and effective collaborator. Bonus points for: Experience with SQLAlchemy and FastAPI. Knowledge of 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. 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 strong desire to learn and solve problems. Desirable: C++, C, Java and Snowflake, Databricks This opportunity provides a 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. … 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 Mentoring junior engineers and raising 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 with experience building tooling or configuration management Excellent communication skills, able to clearly articulate ideas and collaborate with diverse teams A mindset More ❯

UK) or surrounding areas Do you thrive on solving infrastructure challenges and designing resilient systems? Are you excited by the idea of being the first dedicated DevOps/Platform Engineer in a growing, high-impact team? Looking for an opportunity where your decisions shape the future of development, deployment, and monitoring infrastructure? A Unique Career Opportunity Our client is … seeking a Senior Platform Engineer to take ownership of a broad, stimulating technical landscape that blends infrastructure automation, monitoring, deployment strategy, and CI/CD tooling. You will be the first dedicated Platform professional in the team, stepping into a high-impact role previously shared between software engineers and IT specialists. This is your opportunity to shape foundational systems … DevOps, systems engineering, and infrastructure-as-code. The Stack You’ll Work With Here’s a flavour of the tools and technologies you’ll get your hands on: Languages : Python, Rust, shell scripting Automation : Ansible (preferred), Infrastructure-as-Code practices Monitoring : Grafana, InfluxDB (self-hosted) CI/CD : GitHub Actions, local custom runners for hardware-based testing Infrastructure : Docker More ❯

UK) or surrounding areas Do you thrive on solving infrastructure challenges and designing resilient systems? Are you excited by the idea of being the first dedicated DevOps/Platform Engineer in a growing, high-impact team? Looking for an opportunity where your decisions shape the future of development, deployment, and monitoring infrastructure? A Unique Career Opportunity Our client is … seeking a Senior Platform Engineer to take ownership of a broad, stimulating technical landscape that blends infrastructure automation, monitoring, deployment strategy, and CI/CD tooling. You will be the first dedicated Platform professional in the team, stepping into a high-impact role previously shared between software engineers and IT specialists. This is your opportunity to shape foundational systems … DevOps, systems engineering, and infrastructure-as-code. The Stack You’ll Work With Here’s a flavour of the tools and technologies you’ll get your hands on: Languages : Python, Rust, shell scripting Automation : Ansible (preferred), Infrastructure-as-Code practices Monitoring : Grafana, InfluxDB (self-hosted) CI/CD : GitHub Actions, local custom runners for hardware-based testing Infrastructure : Docker More ❯

backend services, integrations, and workflow logic for cutting-edge SaaS applications. Key Focus Areas: Work with automation-generated code and make it production-ready Build robust backend services using Python APIs and data workflows Create seamless integrations with external systems Champion AI-assisted development practices across the engineering team What You'll Do: Own backend features and API integrations … Python, FastAPI, gRPC, SQL) Adapt and extend auto-generated pipelines and front-end outputs Build connectors for APIs, files, and external systems Integrate LLM-based capabilities with robust evaluation and monitoring Champion AI-assisted development practices and tools Set up guardrails and context packs for AI-powered workflows Mentor team members on AI development best practices Help the team … AI tools Work closely with cross-functional teams including Solution Strategists, Data Platform, and Support teams Contribute to architectural decisions and technical strategy What We're Looking For: Strong Python backend/API development experience Solid SQL and data modeling capabilities A solid background within start-ups and able to work on multiple projects similtaneously Proven experience with integrations More ❯