151 to 175 of 487 Software Engineering Jobs in the Thames Valley

Python Developer/Backend Developer/Senior Software Engineer - AI Startup (London, Hybrid) Location: London (Hybrid – 1 day per week in office) Package: £70k–£100k + equity We are partnered with a fast-growing AI startup building a cutting-edge product that redefines what’s possible in engineering. To accelerate their growth, we’re looking for a talented Python … Developer/Software Engineer to join our London team and help build scalable, production-grade AI systems and tools. The Role As a Python Developer, you’ll be a key part of our core engineering team, developing backend systems, APIs, and data pipelines that power our AI products. You’ll collaborate closely with machine learning engineers and DevOps … to turn research ideas into robust, production-ready applications. This is a high-impact opportunity to shape the engineering foundations of a pioneering AI company. Responsibilities • Design, build, and maintain high-performance backend systems in Python • Develop and optimize APIs, data processing pipelines, and integration layers • Collaborate with ML engineers to deploy and scale AI models into production Requirements More ❯

improvement through code reviews, automation, and performance tuning Ensure best practices around security, scalability, and maintainability are applied throughout Requirements for the Contract Python Developer (Commodities) 8+ years of software engineering experience, with 4-6 years of professional Python development Strong experience building RESTful APIs and working with frameworks such as Django, Flask, or FastAPI Familiarity with containerisation … Docker), CI/CD pipelines, and infrastructure-as-code tools Exposure to cloud platforms (preferably AWS or Azure) and data engineering workflows Proficiency in relational and non-relational databases (e.g. PostgreSQL, MongoDB) Experience working in Agile environments and version control systems like Git Prior experience in the Oil, Gas or Energy sectors is highly desirable Next Steps This is 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 More ❯

You'll be responsible for building and maintaining large-scale, real-time data pipelines that power analytics, machine learning, and operational systems across the business. You'll collaborate with software engineers, data scientists, and analytics teams to ensure the platform delivers reliable, high-quality, and compliant data at scale. This is a hands-on engineering role that blends … software craftsmanship with data architecture expertise. Key responsibilities: Design and implement high-throughput data streaming solutions using Kafka, Flink, or Confluent. Build and maintain scalable backend systems in Python or Scala, following clean code and testing principles. Develop tools and frameworks for data governance, privacy, and quality monitoring, ensuring full compliance with data protection standards. Create resilient data workflows … Atlan, DataHub) to enhance visibility and reliability. Partner with ML engineers, analysts, and analytics engineers to understand their data needs and enable advanced data use cases. Contribute to an engineering culture that values testing, peer reviews, and automation-first principles. What You'll Bring Strong experience in streaming technologies such as Kafka, Flink, or Confluent. Advanced proficiency in Python More ❯

Fixed Income, and specifically within front office. Strong understanding of the investment process - portfolio construction, allocation and risk management. Analytical skills - to deep-dive into current tools and workflows. Software Engineering background - Java, Python, SQL, Node.js, Next.js, React, AWS, in a microservices environment. Leadership skills in designing and delivering scalable technology solutions, and the mentoring of junior talent. More ❯

solutions. Play a role in architectural decisions and shaping the technical roadmap. Leverage cloud-native technologies (Google Cloud, Kubernetes) to support growth and best practices. The Candidate 5+ years’ software engineering experience , ideally in fintech, banking, or payments. Strong backend skills with Node.js (NestJS a plus), TypeScript, SQL, and distributed systems. Experience with event-driven architecture (Kafka, Google More ❯

Are you an AI engineer with strong software engineering fundamentals? Have you deployed AI models into production—not just trained them? Want to work on agentic systems, RAG pipelines, and LLM-powered tools? We're working with a high-growth GenAI consultancy building real-world, production-grade AI applications. With a team of 50+, the company partners with More ❯

who thrives in fast-moving, product-led environments We’re partnered with an innovative AI-driven organisation using intelligent automation to simplify complex, everyday challenges. Their technology combines modern software engineering with human-centred design to deliver smarter, more efficient digital experiences. This is an opportunity to join a small, high-performing engineering team at a pivotal More ❯

Senior Software Engineer (Python) – Reducing Carbon Emissions with Machine Learning! Python on AWS £90-£110,000 per annum plus stock London Office - 1-2 days a week Are you a Senior Software Engineer with a passion for working with curious, humble colleagues to build exceptional customer-focused products using Python? Do you align with their principles – “Work as … much as you want, where you want” - giving Software Engineers the autonomy and support to perform at their best? Do you want to be part of a period of significant growth and opportunity, shaping elegant solutions to complex challenges and guiding engineering excellence? Then this is a role you should explore... Senior Software Engineer (Python) – We are … working with one of the UKs most exciting scale-ups to find them Senior Software Engineers with exceptional knowledge of building great products in Python on AWS. They use machine learning technology to help tackle climate change by reducing carbon emissions. They are at a critical period in their journey and will be growing their engineering function from More ❯

Software Engineer (Java Microservices) – Package up to £130k + Excellent Benefits An exciting opportunity has arisen for a Senior Software Engineer (Java Microservices) to join one of the UK’s leading financial institutions, driving innovative digital solutions that power millions of customer interactions every day. You’ll be joining a talented, forward-thinking team delivering scalable, secure and … high-performance services within a major transformation programme. This is a fantastic opportunity for a technically minded individual with strong server-side experience to design, build, and deploy resilient software solutions that make a real impact. Responsibilities Design, develop, test, and deliver high-quality, maintainable code across the entire software development lifecycle. Collaborate within a specialist engineering … with architects and senior engineers to build robust, scalable microservices. Apply Agile methodologies to drive continuous improvement, innovation, and rapid delivery of business value. Contribute to the evolution of software architecture and design, using experimentation and prototyping to shape modern solutions. Champion automation across build, testing, and deployment processes to enhance quality, reliability, and development efficiency. S kills & Experience More ❯

or just beginning your career, working at BGC partners provides opportunities to develop skills, make an impact and grow at an accelerated pace. Role Summary – Senior Middle Office Backend Software Engineer GBX is BGC’s flagship platform for electronic trading solutions in the Credit and Rates markets. Used by thousands of brokers and traders daily, GBX is a strategic … growth targets. Areas of focus include system reliability, testability, recoverability, automation, throughput and latency. Our engineers are analytical thinkers and have a strong understanding of computer science fundamentals and software engineering. You will be exposed to multiple financial markets and market structures, have the opportunity work on scaling a real-time system with a global footprint, applying modern software engineering principles. Requirements 5+ years experience with backend systems (all fields considered, finance not required) Lead and mentor a mixed team of senior and intermediate engineers Promote a culture of strong collaboration, share best practice, propose improvement Point of contact with stakeholders and the NY team 8+ years of professional java experience Strong knowledge of data structures and More ❯

unstructured environments or broader roles where you can help define/design processes, future strategy etc. This is a great role for someone wanting to step up from an engineering lead into more of an Engineering Manager role over the coming years, helping grow the platform and team. *Candidates should be aware that this role is based in More ❯

Job title: Engineer II Location: London - Hybrid Salary: £53,500 - £72,000 Reporting to: Software Engineering Manager At this time, we are not able to offer visa sponsorship for this role. We are committed to building a diverse, global team and our sponsorship policy is evaluated on a role-by-role basis. We encourage you to keep an … into win-win-win outcomes for customers, suppliers and the energy system. What will I be doing? We’re a large team of both data-led and product focused Software and Production Engineers, pushing the boundaries of technology and working at an extraordinary scale. As a collective we strive for engineering greatness and by ensuring best practices across … and in real-time. Collaborate with product managers, designers, and engineers to build thoughtful, user-focused features. Write clean, maintainable code and participate in code reviews to support high engineering standards. Take ownership of smaller services or components, contributing to their delivery, performance, and improvement. Work with SQL or NoSQL databases to store and retrieve data effectively. Build and More ❯

Founding Software Engineer - Cybersecurity Start-Up - London Founding Software Engineer for an early-stage cybersecurity start-up redefining how organisations protect data and infrastructure. Join a founding team with a proven record of building successful start-ups, this is a chance to be part of something from the ground up. You’ll have 3+ years of professional Software Engineering experience Proficiency in programming languages such as Python, C#, TypeScript, Go or Java A start-up mentality: thrive in fast-paced environments, hungry to take ownership Strong problem-solving and collaboration skills London-based and in-office by default Why join Work alongside a world-class founding team with strong start-up success Competitive compensation Direct impact … and ownership from day one We’re looking for engineers excited to tackle some of the hardest challenges in cybersecurity. Founding Software Engineer - Cybersecurity Start-Up - London More ❯

s the kind of work we want to be part of. The role: We seek an adept expert to contribute significantly to our R&D team, bridging machine learning engineering with applied data science. You'll improve and manage our Machine Learning Operations (MLOps) on Azure, and participate in creating, assessing, and advancing various machine learning models and AI … solutions. Develop automated reporting systems that make results from AI models easier to interpret, share, and act on. Key requirements: MSc or BSc in Computer Science, Data Science, Bioinformatics, Engineering, or a related field, or equivalent experience. Proven experience designing and deploying MLOps pipelines (MLflow, Azure ML, Azure DevOps etc). Strong programming skills in Python and familiarity with … common ML/AI libraries (scikit-learn, tensorflow, Keras etc.). Experience implementing machine learning and large language models (LLMs), encompassing deployment, monitoring, and retraining. Familiarity with software engineering guidelines: version control (e.g., Git), CI/CD, containerization (e.g., Docker), and workflow orchestration. Knowledge of cloud platforms and scalable compute environments (Azure preferred). Understanding of data governance More ❯

to deliver enterprise-wide data and technology initiatives. Integrate applications with REST APIs and enterprise data services. Ensure alignment with cloud architecture and development best practices . Apply modern software engineering standards including testing, version control, and CI/CD pipelines. Key Skills: Proven experience in Python programming for data analysis (pandas, numpy, Jupyter). Strong object-oriented … programming and design pattern knowledge. Experience with SQL and relational databases. Familiarity with data visualisation tools (e.g., Plotly Dash, Power BI). Understanding of software development best practices (Git, CI/CD, testing). Exposure to cloud computing platforms (AWS or Azure). Excellent analytical and communication skills. If you are interested or would like to know more, please More ❯

with high-growth clients. Now we’re looking for a Founding Engineer to help us scale from concept to category-defining product. The Role As one of the first engineering hires, you’ll play a key role in shaping our technical direction, architecture, and engineering culture. You’ll work directly with the founding team to design and build … a direct impact on both technology and company growth. What You’ll Do Build, test, and ship core product features from day one Shape technical architecture and long-term engineering strategy Collaborate closely with founders on product and business decisions Help define the engineering culture and future hiring roadmap What We’re Looking For Strong software engineering 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 … 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 … 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 Passion for automation and data infrastructure More ❯

seamless experience that emphasises simplicity, efficiency, and rapid execution. Our goal is to remove obstacles, enabling you to achieve success faster and more effectively. Role Overview As a Senior Software Engineer, you will play a pivotal role in architecting and developing our next-generation web application and API. This role requires technical leadership, hands-on development, and mentoring of … junior developers. You will drive the adoption of best practices, ensuring scalability, security, and performance. If you are passionate about software development, enjoy solving complex problems, and are ready to lead innovative projects, we encourage you to apply. Join our dynamic team and contribute to building transformative solutions that make a tangible impact. This role will be eligible for … Qualifications and Key Skills Education: Bachelor’s in Computer Science or related field from a Tier 1 university. Experience: Minimum of 4 years of full-time professional experience in software development, with strong expertise in TypeScript, ReactJS, and Next.JS. Solid experience in building RESTful APIs Leadership: Proven track record of leading development teams and managing large-scale projects. Database 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 design and develop … systems, ensuring uptime and quick incident response. Identify technology gaps and inefficiencies, experimenting with new tools and 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 More ❯

to deliver scalable, secure, and fault-tolerant applications Drive performance tuning, code reviews, and architectural improvements across the stack What We’re Looking For 5–8+ years of professional software engineering experience 3–5+ years of hands-on experience with Rust in production environments Strong understanding of systems programming , concurrency , networking , and low-level performance optimisation Experience with More ❯

collaborating in a ‘one-team’ approach, and working within highly regulated environments such as telecoms or government. Excellent analytical, verbal, and written communication skills, with a solid grasp of software engineering principles and compliance with legal, technical, and audit requirements. Security Clearance: Security Check (SC) clearance is required for this role. To be successfully appointed, candidates must have More ❯

delivery. Creating reusable technical assets like reference architectures and solution templates. Communicating effectively with stakeholders, translating business needs into technical outcomes. What We’re Looking For 5+ years of software engineering experience, ideally with C# and/or Python . Strong hands-on experience with Azure services (App Services, Functions, Logic Apps, etc.). Familiarity with DevOps practices More ❯

Node.js/TypeScript Developer (Backend-Focused) 💰 £60,000 - £90,000 | 🏠 Hybrid (4 days remote) | 📍 London We’re supporting a purpose-driven tech company operating at the intersection of data, software, and healthcare, a business using technology to drive better health outcomes on a global scale. They’re now looking for a Node Developer (Backend) who’s excited by the … ll Bring: Solid commercial experience with Node.js and TypeScript Strong understanding of API development (REST) Background working with SQL and NoSQL databases At least 3 years’ experience in backend software engineering Previous experience within healthcare (FHIR, HL7, EHRs, or LIMS) or exposure to Software as a Medical Device (SaMD) is highly desirable A proactive mindset and ability More ❯

Senior C++ Developer/Software Engineer (Linux SQL C++17) London/WFH to £110k Global-leading FinTech is seeking a Senior C++ Developer to take ownership of strategic enhancements on their core platform, as well as directly on bespoke client projects. The organisation is a pioneer in the field of cross-asset securities and derivatives post-trade processing technology … and have created ground-breaking, adaptable software that produces secure and scalable solutions for peak operational efficiency and optimum business performance for their clients. This is a great opportunity to accelerate your career alongside established business and technology leaders, and gain/deepen your finance experience. As a Senior C++ Developer, you'll be responsible for designing and building … development experience on Linux or UNIX, C++14 and above You have good SQL skills You're a passionate technologist who is motivated by working on cutting-edge systems and engineering complex solutions You're a positive, proactive team member who excels when working collaboratively You have a strong knowledge of software engineering best practices You're degree More ❯