26 to 50 of 62 Principal Software Engineer Jobs in the UK

Principal Embedded Software Engineer Winfrith, Dorset (hybrid working, 3 days per week onsite) – Permanent vacancy We are looking for a Principal Embedded Software Engineer to work for our maritime defence client TKMS Atlas across a range of new projects, such as underwater vehicle control … systems and sonar equipment. You will be hired as an experienced engineer to play a senior technical hands-on role in the team, with the potential to take on team leadership responsibility should you wish to. This role combines hands-on expertise with the potential for strategic leadership, establishing ...

Principal Embedded Software Engineer Location: Fareham, Hampshire (Hybrid working available) Salary: £70,000 - £80,000 Job Type: Full-time, Permanent Visa Sponsorship Available An advanced technology company based in Fareham, Hampshire is looking to recruit a Principal Embedded Software Engineer to join its growing ...

Title: Principal Embedded Software Engineer Location: North West & Yorkshire Offices Salary: Up to £75k (depending on experience) We re partnering with an established technology engineering organisation seeking a Principal Embedded Software Engineer to lead software architecture, technical delivery, and development strategy across advanced … embedded systems. This is a senior, hands-on role combining system architecture, embedded software development, and project ownership. A key aspect of this position is applying electrical power systems knowledge and protection function theory within embedded control environments. If you re a senior embedded engineer looking to influence ...

Title: Principal Embedded Software Engineer Location: North West & Yorkshire Offices Salary: Up to £75k (depending on experience) We’re partnering with an established technology engineering organisation seeking a Principal Embedded Software Engineer to lead software architecture, technical delivery, and development strategy across advanced … embedded systems. This is a senior, hands-on role combining system architecture, embedded software development, and project ownership. A key aspect of this position is applying electrical power systems knowledge and protection function theory within embedded control environments. If you’re a senior embedded engineer looking to influence ...

Lead Software Engineer £75,000 to £85,000 + Private Healthcare + Enhanced Pension Southampton (Hybrid, 4 days per week in the office) Are you a senior software engineer looking to take end to end ownership of a complex, real-time distributed platform that integrates directly … with mission-critical hardware used in security and critical infrastructure environments? This is a principal-level technical role within a specialist engineering business developing a real-world platform that ingests, processes and surfaces live telemetry from radiation detection systems deployed in highly sensitive locations. The software underpins real ...

Principal Embedded Software Engineer | £70-85k + Bonus | Cambridge This is an opportunity to join a market-leading communications technology company developing mission-critical comms systems. You will take technical ownership of embedded application software development across Linux and Android platforms, helping deliver the next … generation of technology that underpins secure communications. Responsibilities: Designing, developing and testing embedded application software across Embedded Linux and Android platforms. Leading software component activities including architecture, task planning, technical reviews and integration testing. Developing new application features whilst maintaining and enhancing existing software components. Translating complex ...

Senior/Principal Software Engineer Application Deadline: 31 May 2026 Department: Software Engineering Employment Type: Permanent Location: London (Hybrid) Compensation: £70,000 - £100,000/year Description Please note: This role requires applicants to hold active, or recently active, SC or DV clearance. This role also … kind that have to be secure, scalable, and actually usable by the people who rely on them. We’re looking for Senior and Principal Engineers who want to shape meaningful systems, influence technical direction, and work alongside capable people who care about doing the job properly. You’ll help ...

leading aerospace technology company in Tewkesbury is seeking an experienced Senior Principal Software Engineer to drive software development for advanced flight control and actuation systems. This hybrid role requires over 15 years in software engineering, in-depth expertise in safety-critical software, and proficiency ...

leading aerospace technology company in Tewkesbury is seeking an experienced Senior Principal Software Engineer to drive software development for advanced flight control and actuation systems. This hybrid role requires over 15 years in software engineering, in-depth expertise in safety-critical software, and proficiency ...

Principal Software Engineer Portsmouth | Hybrid, 3 days onsite £75,000-£85,000 plus bonus and benefits Want to work on groundbreaking projects within the defence industry? Are you a hands-on technical leader with strong C++ and Unreal Engine expertise and want to work at the forefront … complex, performance-critical software delivery within defence? The role combines advanced engineering with genuine technical authority, shaping how simulation-driven and autonomy-focused systems are designed, built and evolved. The position sits within a fast-growing software and data science consultancy delivering end-to-end solutions ...

About the Role We’re seeking a highly skilled and experienced Principal Embedded Displays Software Engineer (Qt) to lead the development of advanced Human‐Machine Interface (HMI) applications for next‐generation embedded display systems. In this senior technical role, you will drive technical excellence across display software … robust user interfaces using the Qt framework. You will also act as a technical leader and mentor, supporting the growth and development of software engineers within the team while collaborating closely with cross‐functional stakeholders. This role is ideal for someone passionate about embedded HMI technology who enjoys combining ...

Gemba Advantage is seeking a Senior/Principal Software Engineer to design and deliver secure, scalable software solutions while working in small agile teams. The role requires active SC or DV clearance and entails championing modern engineering practices, shaping architectural direction, and influencing technical decisions. Candidates ...

Principal Software Engineer Portsmouth Hybrid, 3 days onsite £75,000-£85,000 plus bonus and benefits Want to work on groundbreaking projects within the defence industry? Are you a hands-on technical leader with strong C++ and Unreal Engine expertise and want to work at the forefront … complex, performance-critical software delivery within defence? The role combines advanced engineering with genuine... CRWG1_UKTJ ...

TwinThread is looking for a Principal Software Engineer to enhance and deliver market-leading technology products within an agile team. This role requires extensive experience in software engineering, particularly with cloud platforms like AWS, and proficiency in AI technologies. You will drive innovation while collaborating with ...

Fairygodboss is seeking a Principal Software Engineer to lead the design and delivery of secure technology products in Asset & Wealth Management. This role involves creating scalable coding frameworks, driving AI technology adoption, and collaborating across teams to enhance user and client experiences. The ideal candidate has strong … cloud platform expertise, particularly in AWS, and extensive experience in software development methodologies. A background in the financial industry is a plus, reflecting the company's commitment to diversity and inclusion. #J-18808-Ljbffr ...

Menlo Security is looking for a Principal Software Engineer I to join their R&D Policy Team in Bracknell, England. This role involves owning the full lifecycle of their cybersecurity policy platform, leading architectural design, and mentoring engineers. The ideal candidate will have over 8 years ...

Software Test Engineer - SC Cleared - Luton Our client is looking for an experienced Software Test Engineer to support the delivery of current and future programmes. This role provides an opportunity to work on the latest technology within a mature development environment. Your Role Create test cases ...

global AI-native consultancy is seeking a Principal Software Engineer to lead engagement delivery in the Energy & Commodities Trading sector. This hands-on role combines technical excellence and domain expertise, focusing on architecting scalable AI solutions that drive trading decisions. The successful candidate will work closely with ...

client, a global leader in radiation detection and identification within the technology sector, is currently seeking a Principal Software Engineer to join their team in the UK. This permanent, full-time position offers the exciting opportunity to work on cutting-edge projects, driving both innovation and excellence … within the software engineering department. Key Responsibilities: Work on the mos... CRWG1_UKTJ ...

shaping architecture, improving products and unblocking delivery. Solve complex engineering problems and drive best practice across the organisation. Requirements 5+ years' experience as a Principal Software Engineer (or similar) in an enterprise environment. Proven track record leading across multiple engineering teams and specialties. Experience with Event-driven ...

shaping architecture, improving products and unblocking delivery. Solve complex engineering problems and drive best practice across the organisation. Requirements 5+ years' experience as a Principal Software Engineer (or similar) in an enterprise environment. Proven track record leading across multiple engineering teams and specialties. Experience with Event-driven ...

Principal/Staff Engineer We are helping an edu-tech company who are looking to scale up the development team with a Principal or Staff Engineer. This is a hands-on development role which also includes AI strategy, code reviews, and understanding business strategy. About you: Hands … will be an individual contributor, sitting in on sprints and understand how to resolve poor performing queries We are looking for a full stack engineer who cares about the UX and UI. The ideal Principal Engineer will have a genuine interest in the business, rather than have ...

work as one to achieve our vision of being the world's most trusted, innovative, liquidity and data solutions specialist. Role Overview The Principal UI Engineer serves as a senior technical authority within the UI engineering discipline, providing leadership across design, architecture, standards, and delivery. The role … focused on building scalable, high-performance UI systems while mentoring engineers and influencing best practices across multiple teams. Operating within agile teams, the Principal UI Engineer sets engineering direction, supports architectural decision-making, and ensures the delivery of high-quality, robust UI solutions. Role Responsibilities Lead the design ...

DevOps Software Engineer (Senior - Principal) Location: Abingdon, Oxfordshire, UK We are looking for the right people — people who want to innovate, achieve, grow and lead. We attract and retain the best talent by investing in our employees and empowering them to develop themselves and their careers. Experience … world’s largest providers of products and services to the global energy industry. Job Duties We are actively seeking a Mid‐Level DevOps Engineer to join our Technical Solutions Team, which is responsible for implementing the delivery platform across the Neftex® subsurface evaluation product portfolio. This role is ideal ...

Principal Platform Engineer FULLY REMOTE ACROSS UK AND IRELAND Our client is a fast-scaling fintech building the next generation of payment infrastructure. They're merchant-first, engineering-led, and genuinely obsessive about outcomes over process. Small teams, real autonomy, hard problems. They're hiring a Principal Platform Engineer to own the design and delivery of a suite of Model Context Protocol (MCP) servers - the trusted, governed gateway between AI agents and their core payments platform. This is a hands-on principal role. You'll set technical direction and write production code, not just ...