21 of 21 Permanent Principal Engineer Jobs in the Thames Valley

Principal Engineer London Hybrid £100,000-£170,000 + bonus + benefits We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for Principal Engineer … their high performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment. Responsibilities as a Principal Engineer: Contribute to the businesses technology strategy and architecture Contribute to the backend Kotlin infrastructure Ship resilient and well tested production code Collaborate with different teams to deliver … and bonus Hybrid office/remote-working practices Private Health Insurance Pension Scheme Life Assurance Scheme with death in service benefit of 4x salary This is a career defining Principal Engineer position with the potential to have a massive impact on the technology strategy of a business that is directly shaping the future of intelligent digital infrastructure. **Unfortunately More ❯

Position : Staff/Principal Engineer Location : London My client are seeking for an accomplished Staff Engineer to help shape the future of our data and backend platforms. This is a senior technical leadership role for someone who is currently operating at a Staff or Principal Engineer level and ready to have a company wide impact. … business strategy Anticipate industry trends, evaluate new technologies, and guide adoption of solutions that keep us ahead of the curve What we’re looking for Experience operating at Staff Engineer or Principal Engineer level for atleast 2 years Expertise in streaming platforms such as Flink, Kafka, and Spark, with experience designing large-scale event driven architectures Strong More ❯

Principal Hardware Engineer | Marine | AUV | Robotics | Harwell – Hybrid | £65,000pa - £70,000pa plus share scheme & benefits: A once in a lifetime opportunity has arisen for a passionate Principal Hardware Engineer to join a stealth robotics company based in the Oxfordshire area. This amazing business and AUV submersible robot have massive potential across a range of different … industry sectors. The Principal Hardware Engineer will lead in the design, integration, and testing of advanced hardware systems for autonomous underwater vehicles (AUVs) and remotely operated vehicles (ROVs). In this role, you will be responsible for developing mission-critical electronics and system architectures that operate reliably in challenging marine environments. If you’re passionate about robotics within … the maritime industry and the autonomous vehicle and unmanned vehicle industry, you honestly need to make contact with us, this Principal Hardware Engineer role is not to be missed. Candidates must be British Citizens or have lived in the UK for a minimum of 5 years, due to needing SC clearance. Key Responsibilities: Lead the architecture and development More ❯

Principal Sales Engineer Location: Remote (UK-based) – with travel to customer sites Salary: circa £140k +20% bonus + car allowance + extensive benefits package (DV cleared) Clearance Requirement: DV (Developed Vetting) or SC if willing to go through DV process Our client is at the forefront of digital transformation, supporting the world’s most essential organisations through their … visibility and insight at an unparalleled scale they help clients solve problems faster, secure what matters, and drive continuous innovation across their digital ecosystems. We are now seeking a Principal Sales Engineer to support the growth of UK public sector accounts. This is a remote, client-facing role for a highly technical and experienced presales professional with a … with tools like Wireshark, Zeek, or similar platforms. Awareness of cybersecurity frameworks and best practices (e.g., NIST, ISO 27001) and how they apply to network assurance. Role & Responsibilities As Principal Sales Engineer, you will play a vital role in driving revenue by delivering technical presales support, demonstrating product value, and shaping best-fit solutions. Reporting to the Regional More ❯

Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they … re looking for an outstanding Principal Engineer to drive their platform forward. The company in a nutshell Funding : $25M Series A from top-tier investors Leadership : Founders with a track record of building one of Europe’s best-known B2B scale-ups Growth : Plans to 10× revenue and expand to 200+ enterprise customers within 3 years What’s More ❯

Principal Platform Engineer London/WFH to £150k Are you a technologist with start-up experience and a first class education looking for a new opportunity? You could be joining a small Fintech start-up run by small, successful and proven team of finance technology entrepreneurs, backed by Silicon Valley investors, as they build out the product, currently … in stealth mode. As a Principal Platform Engineer you'll have an impactful role with lots of influence. Initially you'll assess the current tech set up based on GCP, Python, TypeScript, PostgreSQL and Terraform; establish the production environment and extend the platform to enable scalability. You'll collaborate closely with the CTO and Lead Software Engineer … of Technology. Location/WFH: You'll be based in Central London, with flexibility to work from home twice a week. About you: You have experience in a similar Principal Platform Engineer role within start-up/scale-up environments with strong commercial acumen You have achieved a 2.1 or above BSc from a well renowned top world More ❯

Principal Software Engineer (Golang | Distributed Systems) London – On-site Up to £170,000 base + 25% bonus + excellent benefits Permanent I’m partnered with a high-growth technology company building a world-class data and services platform that processes tens of billions of monthly requests — powering real-time insights for millions of users globally. They’re hiring … a Principal Software Engineer (Golang) to join their London engineering team as a hands-on technical leader — driving architectural direction, mentoring engineers, and solving complex distributed systems challenges at scale. The Opportunity Architect and scale high-throughput, event-driven systems built in Go Lead the evolution of real-time APIs and data platforms handling billions of requests Stay … across all services Mentor senior engineers and play a key role in shaping engineering culture What They’re Looking For 8+ years’ backend engineering experience, ideally at Staff/Principal/Tech Lead level Expert-level proficiency with Golang in production Proven track record designing distributed systems and event-driven architectures (Kafka, RabbitMQ, WebSockets) Deep understanding of PostgreSQL , Redis More ❯

Principal Systems Engineer Location: Hybrid Opportunities - A mixture of remote work with client site travel. A Forward-looking Engineering Company Ebeni is involved in engineering projects and programmes in the Defence & Aerospace, Aviation, Rail, Nuclear, Automotive, Oil & Gas and Cyber & Digital sectors. Ebeni is a people-centric company, respecting individual aspirations as well as promoting benefit to all … you can rely on Ebeni to deliver innovative solutions that assure the safety and security of your existing and emerging technologies. The Role: Ebeni is seeking a Senior or Principal Systems Engineer to enhance our Systems Engineering capability. This role involves shaping, leading and delivering complex projects across multiple domains, including: Bid Support, Technical Leadership, Stakeholder Management and More ❯

Senior/Principal Systems Engineer £45,000 - £85,000 + excellent bens Bristol, London, Manchester, Reading (Hybrid) Join us as a Senior/Principal Systems Engineering Consultant in Aerospace, Defence, Security and Technology (ADS&T). You'll lead teams that use Systems Thinking to analyse, assess and develop solutions to their most complex challenges. Underpinned by … a huge variety of projects, ranging from niche consultancy projects to large, high-profile programmes. So, you'll always be able to keep yourself challenged. Your Purpose: Senior/Principal Systems Engineer Provide consultancy to client project and engineering managers. Lead the use of best practice techniques and tools on client and internal projects. Champion a Model Based … to a client. Proactively identify opportunities and contribute to ADS&T growth. Contribute to the development of our people through mentoring and coaching. What can you bring: Senior/Principal Systems Engineer The use of MBSE approaches and tools (e.g. Sparx EA, Cameo). Knowledge of modelling languages and architecture frameworks, e.g., UML/SysML, ArchiMate, TOGAF, MODAF. 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 back-end … 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 ❯

Step into a world where innovation meets impact. This exciting opportunity as a Principal Software Engineer offers you the chance to be part of a forward-thinking company that is revolutionising defence technology. Contributing to cutting-edge solutions, you will play a pivotal role in delivering advanced systems that redefine security and trust on a global scale. With … control, continuous integration, and automated test tools and frameworks. This company is dedicated to delivering highly differentiated solutions by applying cutting-edge electronic, mechanical, and software technologies. As a Principal Software Engineer, you will contribute to the development of pioneering cryptographic and key management solutions, ensuring the secure exchange of vital information for its customers. This role is … Maidenhead offering flexible working hours and the opportunity for a 1pm finish on Fridays. Interested?: If you are ready to take on this challenging and rewarding role as a Principal Software Engineer, apply now and become part of a team that is shaping the future of defence technology. Your CV will be forwarded to Jonathan Lee Recruitment, a More ❯

Step into a world where innovation meets impact. This exciting opportunity as a Principal Software Engineer offers you the chance to be part of a forward-thinking company that is revolutionising defence technology. Contributing to cutting-edge solutions, you will play a pivotal role in delivering advanced systems that redefine security and trust on a global scale. With … control, continuous integration, and automated test tools and frameworks. This company is dedicated to delivering highly differentiated solutions by applying cutting-edge electronic, mechanical, and software technologies. As a Principal Software Engineer, you will contribute to the development of pioneering cryptographic and key management solutions, ensuring the secure exchange of vital information for its customers. This role is … Maidenhead offering flexible working hours and the opportunity for a 1pm finish on Fridays. Interested?: If you are ready to take on this challenging and rewarding role as a Principal Software Engineer, apply now and become part of a team that is shaping the future of defence technology. Your CV will be forwarded to Jonathan Lee Recruitment, a More ❯

Contributor) to solve some of their most complex problems. This is an opportunity to be a top technical voice, influence the system, and mentor a talented team. As a Principal Engineer , you will be a hands-on problem solver and a technical leader, influencing the team through expertise and example rather than line management. What You'll Do … approaches and accelerate their learning. Lead by Example: Run training sessions and facilitate discussions to elevate the entire engineering team. Who We're Looking For You are a seasoned engineer with 10-15 years of experience, a track record of building maintainable, scalable services and systems, and an upward trajectory in your career. You are a fantastic IC who More ❯

Principal Systems Engineer Location: Hybrid Opportunities - A mixture of remote work with client site travel. A Forward-looking Engineering Company Ebeni is involved in engineering projects and programmes in the Defence & Aerospace, Aviation, Rail, Nuclear, Automotive, Oil & Gas and Cyber & Digital sectors click apply for full job details More ❯

.NET Framework systems toward modern, containerised .NET 8/9 services running on Kubernetes in both on-prem and cloud environments. About the Role We are looking for a Principal Software Engineer with a DevOps mindset and deep software engineering experience , especially in .NET. This is a hands-on, leadership role where you'll help shape the technical … collaboration across teams. Architect and implement solutions that span software and infrastructure, balancing resilience, scalability, and maintainability What We’re Looking For Essential Proven experience as a Senior or Principal Engineer in both software and DevOps contexts. Strong .NET software engineering background. Deep expertise in Kubernetes (on-prem and cloud) and Terraform . Experience with real-time, event More ❯

The group is seeking an experienced Senior Principal Analog IC Design Engineer to work on the development of new product solutions for portable consumer applications, engaging directly with our Tier 1 OEMs, along with supervisor/mentor leadership opportunities.Responsibilities Supporting other job functions such as layout, lab evaluation and test to ensure successful delivery meeting all requirements. Requirements More ❯

Our client, a leader in the defence and security sector, is seeking a Principal Software Engineer to join their team in Berkshire. This is a permanent role where you will provide technical leadership within their Cyber Unit. Key Responsibilities: Architect, specify requirements, design, implement, and test embedded and/or application software to ensure high quality and timely More ❯

Our client, a leader in the defence and security sector, is seeking a Principal Software Engineer to join their team in Berkshire. This is a permanent role where you will provide technical leadership within their Cyber Unit. Key Responsibilities: Architect, specify requirements, design, implement, and test embedded and/or application software to ensure high quality and timely More ❯

As a Principal/Lead Full-Stack Engineer, you'll thrive if you're hands-on, grounded, and passionate about building with technology. This role is ideal for those looking to have a large impact and huge scope for growth, while still being hands on with technology. We aim to allow growth without becoming “post-technical” . Our … and decision-making Provide hands-on mentorship and technical guidance that encourages knowledge sharing, continuous improvement, and innovation within your team Skills you’ll need: Demonstrated experience as a Principal or Lead Software Engineer Experience in leading architecture and design decisions, ensuring adherence to best practices in technology choices and system design Deep understanding of programming fundamentals and More ❯

Vicinity Technologies Limited, a dynamic leader in the UK's 5G and AI revolution, is seeking talented Senior/Principal Wireless Software Engineers to join our team of innovators. As a key contributor, you will play an integral role in developing cutting-edge 5G, 6G and Non-terrestrial Network (NTN) solutions which are transforming the way we connect and More ❯

stage B2B SaaS company that’s building something genuinely transformative in their category. As they enter a critical phase of growth, they’re looking to hire a Senior or Principal Full-Stack Software Engineer to help lay the technical foundations of their platform and influence both the engineering direction and long-term product strategy. This is a high … isn’t available. The team is passionate about diversity, inclusion, and building an environment where everyone can thrive and do their best work. If you're a hands on engineer excited by the idea of helping build a product from the ground up and want to join a team that values innovation, ownership, and velocity we would love to More ❯