1 to 25 of 66 Senior Software Engineer Jobs in the Thames Valley

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 More ❯

About Us Software helps to enable the world-leading science performed at Diamond. Our software systems facilitate operations at all levels, including the low-level control of synchrotron and beamline hardware, the planning, execution and monitor of experiments, data archiving and retrieval, data processing and visualisation, the application for beamtime, and capture of remote experiment plans and samples. … Our software engineers work alongside our scientists to develop innovative and robust solutions to keep Diamond at the forefront of scientific research. At Diamond we are currently undertaking a major upgrade of the facility, known as Diamond-II. Diamond-II will combine a new machine and new beamlines with a comprehensive series of upgrades to optics, detectors, sample environments … sample delivery capabilities and computing, which will ultimately generate an even more brilliant light source at a higher energy. About the Role We now have an opportunity for a software engineer within the DAQ group team that supports and develops software for Diamonds Soft Condensed Matter(SCM)and Crystallography(X)science groupson a 4-year fixed term More ❯

Senior Software Engineer, C++, COR7263 This is a rare opportunity for an experienced, Senior Software Engineer with skills in C++ and Rust, to join an historic British icon at the forefront of Engineering. The Role Ideally with a background in aerodynamics, data science, vehicle dynamics or computer simulations, the Senior Software Engineer will work closely with Design Engineers, Mechanical Engineers and other technical users, to gather and understand the requirements necessary to ultimately design, develop and maintain the software and computational tools they use - a variety of applications across both web and desktop, such as state-of-the-art simulations, real time data and bespoke analysis tools. Benefits include: Bonus … within Engineering, or other technical environments would be of benefit I want to do that! If you have any questions or would simply welcome a chat about this excellent Senior Software Engineer position and company, just call me or drop me an email, as I'd love to hear from you! If, though, you think this role More ❯

Senior Software Engineer We're currently working with a growing SaaS company based in Banbury that are looking for a Senior Software Engineer skilled with C# ASP.NET, Angular, and SQL. This role will naturally grow in to a Lead Engineer position as the team grows. You will be working to develop and build … out nationally, and then internationally. This role is based in Banbury, and it will require you to be onsite a minimum of two days per week. Essential Experience: Professional software engineering experience (typically 5+ years) using C#/ASP.NET (Core & Framework) and modern JavaScript/TypeScript frameworks, particularly Angular (v8+). Significant understanding and practical experience with relational databases … Azure). Benefits: Competitive Base Salary Hybrid Working Private Healthcare 33 Days Holiday 37.5 Hour work weeks - flexi-hours Great career progression This is a great opportunity for a Senior Software Engineer skilled with C# .NET and Angular, to join a great company offering an incredible benefits package, with the opportunity for further career progression. Please apply More ❯

Senior .NET Software Engineer - An esteemed investment management company is seeking an experienced Senior .NET Software Engineer to lead the development of robust and scalable financial solutions. This high-impact role provides an opportunity to shape technology strategies and mentor junior engineers within a collaborative and growth-focused team. Responsibilities for the Senior .NET Software Engineer: Drive the design, development, and deployment of complex software solutions using .NET technologies. Architect scalable systems to support evolving business requirements and ensure high performance. Take ownership of key projects, managing technical deliverables and ensuring deadlines are met. Provide technical leadership, guiding junior engineers and promoting best practices within the team. Collaborate with … stakeholders to align technical implementations with business objectives. Skills & Experience for the Senior .NET Software Engineer: Extensive experience in .NET development, including expertise in C#, ASP.NET Core, and microservices architecture. Strong knowledge of database systems, including SQL and NoSQL technologies. Demonstrated success in delivering complex technical projects within a financial or investment setting. Experience with cloud platforms More ❯

Senior Software Engineer Key Technologies: C#, .NET, React, AWS, Docker, Kubernetes City of London, United Kingdom Perm Role: £80,000 - £120,000 Harrington Starr has partnered with a Global Financial Services Vendor and they are looking for a Senior C#, .NET Software Engineer to join their growing team! This role provides the perfect opportunity … communication skills. Unrestricted right to work in the UK. This role offers hybrid working, with an office location based in the City of London. This role will suit a Senior Software Engineer, with expert C#, .NET experience and commercial use of React having a direct impact from the get-go. Apply below and if you have any More ❯

At a Glance Capsa is an AI platform that accelerates due diligence and deepens insights for Private Equity funds. We are hiring senior software engineers who are comfortable contributing across all layers of the application and developing features end to end. Details: Role : Senior Software Engineer - Full Stack Location : London, UK (Hybrid, In-Person … defense companies like QinetiQ and retail tech startups such as Standard AI. The entire team consists of early-stage startup veterans passionate about building exceptional products. The Role A senior software engineer at Capsa is expected to own projects and features from conception to production, working across the stack to deliver improvements to our AI platform. Key … vision and will have a direct impact on its success. Have the opportunity for fast career growth. Enjoy yourself! Apply if: You have 4+ years of experience as a software engineer in a venture backed startup or top tech firm. You have taken entire products or features from ideation to production and you've measured their impact. You More ❯

Step into the future of defence technology with an exceptional opportunity as a Senior Software Engineer. If you're passionate about innovation and looking to make a real impact, this role offers you the chance to work on cutting-edge projects that redefine what's possible in the industry. Join a forward-thinking team that values excellence, creativity … and career development. What You Will Do: Define, design, develop, and test embedded and application software to deliver high-quality solutions on time. Apply object-oriented design techniques to ensure code reusability and integration with testing frameworks. Review system design artefacts to derive software requirements and architecture that meet high-level system needs. Use modelling tools like RSA … and EA to document and maintain software designs, ensuring accuracy for code generation. Contribute to bids and proposals by generating technical estimates and identifying associated risks. Propose and implement improvements in tools, processes, and techniques to enhance software development efficiency. What You Will Bring: A degree in an engineering, mathematical, or science-based subject, or equivalent experience. Proficiency More ❯

Step into the future of defence technology with an exceptional opportunity as a Senior Software Engineer. If you're passionate about innovation and looking to make a real impact, this role offers you the chance to work on cutting-edge projects that redefine what's possible in the industry. Join a forward-thinking team that values excellence, creativity … work on high-profile programmes, this is your chance to thrive in a role that truly matters. What You Will Do: - Define, design, develop, and test embedded and application software to deliver high-quality solutions on time. - Apply object-oriented design techniques to ensure code reusability and integration with testing frameworks. - Review system design artefacts to derive software requirements and architecture that meet high-level system needs. - Use modelling tools like RSA and EA to document and maintain software designs, ensuring accuracy for code generation. - Contribute to bids and proposals by generating technical estimates and identifying associated risks. - Propose and implement improvements in tools, processes, and techniques to enhance software development efficiency. What You Will More ❯

Step into the future of defence technology with an exceptional opportunity as a Senior Software Engineer. If you're passionate about innovation and looking to make a real impact, this role offers you the chance to work on cutting-edge projects that redefine what's possible in the industry. Join a forward-thinking team that values excellence, creativity … work on high-profile programmes, this is your chance to thrive in a role that truly matters. What You Will Do: - Define, design, develop, and test embedded and application software to deliver high-quality solutions on time. - Apply object-oriented design techniques to ensure code reusability and integration with testing frameworks. - Review system design artefacts to derive software requirements and architecture that meet high-level system needs. - Use modelling tools like RSA and EA to document and maintain software designs, ensuring accuracy for code generation. - Contribute to bids and proposals by generating technical estimates and identifying associated risks. - Propose and implement improvements in tools, processes, and techniques to enhance software development efficiency. What You Will More ❯

About the Job Senior Software Engineer- Hybrid (2 days on site)- London- £100K+ Incredible Benefits Are you passionate about working with cutting-edge technology and looking to grow your skills in a forward-thinking environment? We’re currently looking for Senior Software Engineers who enjoy being hands-on and thrive on solving complex technical challenges. … the personal insurance space. The venture combines the agility and innovation of a start-up with the stability and backing of a major UK financial services provider. As a Senior Software Engineer , you’ll collaborate closely with Product Owners, subject matter experts, and other team members to deliver high-quality outcomes through continuous development and release cycles. More ❯

Senior Software Engineer – Product Development – Reading (Hybrid) Avanti Recruitment is partnering with a thriving Software company in Reading. We are looking for an expert Product Engineer with very strong OO PHP skills or OO programming in another language and happy to work with PHP. This role will suit an engineer who thrives on solving … customer problems , not chasing the latest tech or buzzwords. The Senior Software Engineer will take ownership of complex, high-impact product features on a well-established SaaS platform. This is a hands-on engineering role, not a website maintenance job and you’ll be building the logic, architecture, and integrations that power core customer solutions. The Role … evolution with scalable, maintainable architecture Occasionally creating supporting UIs for complex functionality What We’re Looking For Deep expertise in object-oriented programming and backend architecture Strong understanding of software engineering principles and design patterns API design, development, and integration experience HTML, CSS, JavaScript Solid database knowledge (MySQL preferred) Comfortable owning projects end-to-end Linux, SaaS platforms, CRM More ❯

Senior Software Engineer We're currently working with a growing SaaS company based in Banbury that are looking for a Senior Software Engineer skilled with C# ASP.NET, Angular, and SQL. This role will naturally grow in to a Lead Engineer position as the team grows. You will be working to develop and build More ❯

Senior Software Engineer II – ML Platform & GenAI (relocation to dubai) Location: Dubai, United Arab Emirates As part of the Machine Learning Platform & Generative AI Applications team, this role sits at the intersection of engineering, data science, and product development. The team builds the foundational tools that power intelligent and engaging user experiences across multiple business verticals. This … is an exciting opportunity for a Senior Software Engineer with expertise in GenAI and platform engineering to contribute as a hands-on technical leader. You will help shape the next generation of AI-driven services by building scalable infrastructure and driving innovative applications from concept to production. Key Responsibilities Design and implement scalable services, APIs, and workflows … Collaborate with cross-functional teams including product managers, designers, and data scientists to translate high-level ideas into executable engineering tasks. Qualifications & Requirements 7+ years of professional experience in software engineering with strong design principles and system architecture knowledge. Proficiency in programming languages such as Python, Java, Go, or similar. Experience working with Generative AI and ML infrastructure, including More ❯

plans do not stop here; we are on the lookout for top-tier talent to join us on our journey and enable our next phase of success. The Role: Senior Software Engineer Location: London HQ Hybrid working and flexible hours: 4 days in the office and 1 WFH. Novatus Global is seeking an experienced Senior Software Engineer to join our growing team. This role is critical in helping us design, build, and scale our platform. You will be hands-on with system design, data engineering, and solution delivery. Strong experience with Snowflake is essential, as you will play a lead role in architecting and optimising our Snowflake data platform. Key Responsibilities Serve as a … application architecture to ensure performance, scalability, and security. Use prior experience building products on the Snowflake platform to help drive innovation for Novatus’ En:ACT platform. Build high-quality software by developing reliable applications and data pipelines (ETL/ELT) and writing clean, maintainable, and testable code. Collaborate closely with Product, Data, and Regulatory Insights teams to translate complex More ❯

+ Bonus + Benefits Clearance Required: British Citizens only, SC eligible Our client, a consultancy at the forefront of public sector digital transformation, is looking for a Senior Software Engineer to join a high-performing team delivering AI-powered data platforms to government departments. You'll contribute to a secure full-stack platform enabling sensitive data redaction … and digital archiving. This is a chance to build innovative, scalable services that make a real-world impact across central government. Responsibilities: Design and develop secure, scalable full stack software solutions Work across 30% front-end development (React, TypeScript) and 70% back-end (Java, Spring Boot) Develop APIs, manage relational databases (PostgreSQL/MySQL), and deliver clean DevOps pipelines … looking for: 4+ years of experience in full stack development Expertise in Java, Spring Boot, and front-end technologies including React Strong skills in PostgreSQL, API design, and secure software deployment Comfortable working in hybrid environments using CI/CD, Docker, GitHub Actions Excellent problem-solving ability and communication skills Must be a British Citizen and eligible for SC More ❯

Senior C++ Software Engineer London Join a pioneering team developing advanced software for secure, high-performance communications. This is an opportunity to contribute to technology that supports public safety, defence, and government operations, working within an organisation that combines the innovation of a start-up with the stability of a globally established leader. You’ll play … QA, and Architecture. If you’re passionate about engineering excellence, security, and reliability, this is a genuinely impactful role. In this role, you’ll design, build, and maintain C++ software for mission-critical communication systems while integrating with third-party platforms such as Motorola DCS and CADI. You’ll collaborate closely with cross-functional teams to deliver scalable and … secure solutions that perform under pressure. Your work will also involve participating in architecture discussions, contributing to code reviews, implementing best practices, and ensuring the software meets performance, reliability, and security standards. You’ll have the freedom to innovate and the responsibility to deliver technology that has real-world impact. What's required for this Senior C++ Software More ❯

Senior Embedded Software Engineer 📍 Milton Keynes – Onsite 🕒 Permanent Position Ready to launch your career into orbit? Join a cutting-edge team developing next-generation communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. This is your chance to work on technology that’s literally out of this world. 🚀 What You’ll Be Doing … As a Senior Embedded Software Engineer, you’ll be at the heart of our mission-critical projects, designing and developing software that powers high-reliability systems in extreme environments. Craft low-level and high-level software in C , from concept to deployment. Drive development across the full software stack: microcontrollers, drivers, BSPs, applications, and More ❯

Senior Embedded Software Engineer 📍 Milton Keynes – Onsite 🕒 Permanent Position Ready to launch your career into orbit? Join a cutting-edge team developing next-generation communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. This is your chance to work on technology that’s literally out of this world. 🚀 What You’ll Be Doing … As a Senior Embedded Software Engineer, you’ll be at the heart of our mission-critical projects, designing and developing software that powers high-reliability systems in extreme environments. Craft low-level and high-level software in C , from concept to deployment. Drive development across the full software stack: microcontrollers, drivers, BSPs, applications, and More ❯

Our client, a prestigious entity in the Defence & Security sector, is currently seeking a Senior Software Engineer to join their dedicated team in Berkshire. This permanent position offers the opportunity to work fully onsite due to network requirements, with the added benefit of a potential bonus and eligibility for security clearance enhancements. Key Responsibilities - Design, implement, test … and maintain embedded and application software following project processes. Apply object-oriented design for reusable code and integration with testing frameworks. Review system designs to derive software requirements and architecture. Document and maintain software design using tools like RSA and EA. Follow and promote best practices: TDD/BDD, CI/CD, DevSecOps, C/C++ standards. … at least one of: embedded product development (bare-metal/RTOS like ThreadX, QNX, Linux), embedded Linux application/kernel/driver development, or C/C++. Knowledge of software development processes, Object-Oriented Design, Design Patterns, and software testing. Desirable: Languages: Python, JavaScript/node.js/react.js, Rust Knowledge of communications protocols (e.g., TCP/IP) Experience More ❯

Our client, a prestigious entity in the Defence & Security sector, is currently seeking a Senior Software Engineer to join their dedicated team in Berkshire. This permanent position offers the opportunity to work fully onsite due to network requirements, with the added benefit of a potential bonus and eligibility for security clearance enhancements. Key Responsibilities - Design, implement, test … and maintain embedded and application software following project processes. Apply object-oriented design for reusable code and integration with testing frameworks. Review system designs to derive software requirements and architecture. Document and maintain software design using tools like RSA and EA. Follow and promote best practices: TDD/BDD, CI/CD, DevSecOps, C/C++ standards. … at least one of: embedded product development (bare-metal/RTOS like ThreadX, QNX, Linux), embedded Linux application/kernel/driver development, or C/C++. Knowledge of software development processes, Object-Oriented Design, Design Patterns, and software testing. Desirable: Languages: Python, JavaScript/node.js/react.js, Rust Knowledge of communications protocols (e.g., TCP/IP) Experience More ❯

Senior Software Engineer - Artificial Intelligence - London - £100,000 - £150,000 base + Equity We are working with an ambitious, well-funded defence technology company revolutionising how organisations collaborate with sensors, robots, and autonomous systems. This is a pivotal moment to join a high-calibre team solving some of the most complex and consequential problems in the field. … and influence over design, functionality, and direction, no layers of bureaucracy, just the opportunity to make a tangible impact. About the Role You will design, build, and test core software platforms and user interfaces. This includes deploying and testing with autonomous and robotic systems in the field, writing maintainable code for mission-critical environments, integrating with third-party APIs … alongside real systems. Required Skills Degree in Computer Science, Engineering, or a related technical field (or equivalent experience) Strong programming skills in C++, Rust, Java 8+ years of professional software engineering experience Preferred Skills Experience with autonomous systems and robotics Benefits Mission & impact: Build software directly supporting defence and humanitarian operations Ownership: Shape architecture, product direction, and team More ❯

Senior Software Developer London – Twice a week in the office £70,000-£90,000 C#/Python/Azure I’m currently working for a well-established tech consultancy business of over 70 years who are based in Central London and looking for a Senior Software Developer , paying up to £90,000 and requiring office working More ❯

Senior Backend Software Engineer (Ground Segment) Aim high, go beyond! At Open Cosmos we are solving the world’s biggest challenges from space, providing businesses, governments and researchers access to more readily available information than ever before - ready for the challenge? Then read on... Working in our Chief Technology Office (CTO) The CTO division is where Open … technical innovation, the team designs, builds, and operates the satellites, systems, and platforms that make our missions possible. It’s a highly collaborative environment where ideas become real hardware, software, and data solutions that deliver impact from space. Our Ground Segment team builds and runs the software that powers Open Cosmos missions. From our cloud-native Mission Operations … and operate the systems that keep multi-satellite constellations flying. Working with modern technologies — microservices, Kubernetes, Go, RabbitMQ, Postgres, and Terraform — they follow an agile, DevOps-driven approach. Every engineer owns their work end-to-end, from design and code to testing and operations, with plenty of space to suggest improvements and shape how they work. What You'll More ❯

About Us Software helps to enable the world-leading science performed at Diamond. Our software systems facilitate operations at all levels, including the low-level control of synchrotron and beamline hardware, the planning, execution and monitor of experiments, data archiving and retrieval, data processing and visualisation, the application for beamtime, and capture of remote experiment plans and samples. … Our software engineers work alongside our scientists to develop innovative and robust solutions to keep Diamond at the forefront of scientific research. About the Data Acquisition Group The Data Acquisition (DAQ) group develops software to interface with and control the hardware which allows experiments to be performed and monitored as well as guiding the end user to tools … for data reduction and analysis. The group works closely with scientists, controls, data analysis and information management engineers to continuously develop and improve software solutions for scientific data acquisition and on-the-fly monitoring and data analysis. The current DAQ software platform is a client-server application called GDA (Generic Data Acquisition) which is written in Java and More ❯