76 to 100 of 214 Principal Engineer Jobs in the UK

Principal Technical Safety Engineer with knowledge and experience of Software Development – Warrington and Other Locations Risktec is looking for a Principal Technical Safety Engineer who not only has strong technical safety expertise, but also a genuine interest in and aptitude for software development. Specifically ...

Principal Machine Learning Engineer – Sports AI & Personalisation West London (Hybrid) Freelance Contract - 6 Months (Expected Extensions) Rates - Negotiable What if AI could completely change how millions of fans experience live sport? We're currently partnering with a major consumer technology and media business that’s investing heavily … fans engage with live sport; from real-time insights and predictive analytics to highly personalised viewing experiences. They’re now looking for a Principal Machine Learning Engineer to play a key role in shaping the architecture, strategy, and delivery of large-scale production ML systems powering live sports ...

Principal Systems Engineer Luton 12-Month Contract Paying up to 85p/h (Inside IR35) Key Responsibilities Development of RF system requirements. Assisting engineering domains in design and integration activities. Assisting with requirements definition for integration, qualification, verification, and validation activities Essential: Hold a degree or equivalent qualification ...

Title: Principal Software Engineer – Node/TypeScript Location: 100% Remote – UK/Europe (open to Portugal and similar locations) Salary: £130,000 – £150,000 Industry: CyberSecurity SaaS, Vulnerability Scanning Company profile: Bootstrapped start-up, high trust/high leverage product focussed engineering team Company size: 6 people … values clean architecture, thoughtful system design, and long-term technical quality over short-term fixes. They’re now looking for an exceptional Principal Software Engineer to play a key role in shaping the platform as it continues to evolve. The Role This is a hands-on principal ...

Principal Full Stack Software Engineer Location: Hybrid - 1-2 days a week Salary: £110-130k + 10% Bonus Type: Permanent No Sponsorship Available Overview: We are seeking a Principal Full Stack Software Engineer to lead the design, development, and delivery of scalable, high-performance applications ...

Principal RF Engineer Southampton (or alternatively Bristol) – 6 month duration – Pay rate £64.81 p/h Umbrella or £47.54 p/h PAYE (£54.45 p/h including holiday pay) We are recruiting for an Engineer with microwave engineering knowledge, who is familiar with working on complex ...

Principal Manufacturing Test Engineer Location: Stevenage Salary & Package Salary up to £52,000, impressive benefits such as a company bonus, pension contributions up to 14%, paid overtime, and continuous professional development. Are you an experienced Test Engineer specialising in Electronics, eager to make a meaningful impact … defence manufacturing sector? We currently have a fantastic opportunity for a Principal Manufacturing Test Engineer, who will shape the future of production testing within a dynamic, forward-thinking environment. In this role, you will lead test system introduction and support the testing and diagnostics of electrical, electronic ...

Principal Rust Engineer London | Permanent | Hybrid Ncounter is supporting a global investment firm in hiring a Rust Developer to join a highly influential Product team. This group sits at the core of the business, building the distributed platforms, internal services, and compute frameworks that underpin trading, quant research ...

Title: Principal Systems Engineer Location: Isle of Wight Cowes 4/5 days weekly onsite We offer a range of hybrid and flexible working arrangements please speak to your recruiter about the options for this particular role Salary: Up to £87,200 DOE + bonus scheme Come … yourself into a dynamic Principal Systems Engineering role at the forefront of real world demands in the defence industry. Alongside ensuring operational excellence for our existing products, there will be the opportunity to develop next generation radar products to counter emerging threats and contribute to our strategy ...

Principal Vulnerability Engineer | High-Growth Cybersecurity Scale-Up | Fully Remote (UK) Remote – UK Based Up to £110,000 + benefits Permanent – Full time Got a track record of 0-day discoveries, public CVEs, and a reputation for finding bugs that actually move the needle? Join a research-driven … backed cybersecurity scale-up trusted by Fortune 500 enterprises and critical infrastructure providers. Recognised by Gartner, $29M funded, and scaling fast worldwide. As a Principal Vulnerability Engineer , you’ll own the full vulnerability lifecycle – from discovery, through detection, to deployment – building production-grade tooling and pioneering LLM-powered ...

Principal Systems Engineer Modelling & Simulation Motorsport & High-Performance Vehicles We are working with a leading engineering organisation at the forefront of motorsport and high-performance vehicle technology to appoint a Principal Systems Engineer Modelling & Simulation. This role sits at the highest level of technical contribution (equivalent … Staff Engineer level globally) and offers the opportunity to define modelling strategy, lead complex system development, and directly influence next-generation electrohydraulic technologies. The Opportunity This is a senior, hands-on technical leadership role focused on model-based design, simulation capability, and system performance. Youll work across the full ...

Principal Software Engineer - AI & Innovation Recruiting a Principal Software Engineer with a proven track record of delivering innovative, AI driven solutions and the curiosity to explore beyond traditional technology boundaries. Within the newly createdAI & Innovation team, you will shape the future of the organisation's products ...

Principal Software Engineer - AI & Innovation Recruiting a Principal Software Engineer with a proven track record of delivering innovative, AI driven solutions and the curiosity to explore beyond traditional technology boundaries. Within the newly createdAI & Innovation team, you will shape the future of the organisation's products ...

Principal Systems Engineer Edinburgh OR Newcastle - fully onsite 12-month contract Paying up to 70p/h (Inside IR35) Role overview : Our client is looking for an experienced Systems Engineers to contribute to the continued development of an in-service radar system, by supporting the planning and analysis ...

Principal AI Engineer Hybrid Working on Client Site £100,000 to £130,000 plus bonus and benefits This is a standout opportunity to shape and deliver cutting‐edge digital solutions that drive real operational impact. You will work directly with clients, embedding AI, advanced analytics, and digital tools ...

Energy Trading - Principal Software Engineer London About Indicium AI Indicium AI is trusted by the world's leading enterprises to deliver AI into production at scale. We are a global AI-native consultancy with proven experience across Financial Services, Energy & Utilities, Healthcare & Life Sciences, Retail & CPG, and Manufacturing. … partners - including Anthropic, Databricks, AWS, OpenAI, and Microsoft - to deliver modern AI with speed and measurable impact. Overview Indicium AI are seeking an exceptional Principal Software Engineer to lead delivery of exciting engagements within our Energy & Commodities Trading sector. This role demands a unique combination of hands ...

PRINCIPAL CYBERSECURITY ENGINEER SC Cleared - UK Only - (Sponsorship is unavailable) you must hold SC Clearance.Provide expert advice on the defences against cyber threats, data breaches, and emerging risks. This includes offering guidance on the selection, design, justification, implementation, and operational management of cybersecurity strategies, technologies, and standards. Contribute ...

Principal Systems Engineer(Software/Simulation) Portsmouth-Broad Oak Up to £75k+10% Bonus My client a multinational Aerospace & Defence organisation are looking for a Principal Systems Engineer to join their team working on a hybrid basis. You will join the clients Simulation and Training sector ...

Senior/Principal Systems Engineer One Big Circle – Bristol Full-Time 37.5 hours over 5 Days Salary £40 - £65k depending on experience About One Big Circle Be part of an award-winning workplace: The Sunday Times Best Medium-sized Technology Company 2025 Formed in 2017, One Big Circle … growing, and we’d love for you to be part of the journey. Role Summary We are looking for an experienced Senior or Principal Systems Engineer to be involved in the projects we complete from specification, design, test & build and commissioning. You will be working on projects primarily ...

Principal Electrical Safety Engineer Abingdon Rd, Culham, UK Employees work in a hybrid mode Full-time Salary: £71,815 (inclusive of Specialist Allowance) + excellent benefits including outstanding pension Division: Integrated Engineering Site Location: UKAEA Culham, Oxfordshire Confirmed Grade: Grade I Department: Electrical Engineering Company Description … highlights significant risk to UKAEA operations. - Conduct incident investigations, determine root cause, develop corrective actions and provide services to the Office of the Chief Engineer as a technical authority for electrical safety and related engineering aspects. Qualifications Essential: - Honours degree (or equivalent) in Electrical Engineering or a closely related ...

Principal Software Engineer - C++ and Rust - is required by highly successful and fast growingtechnology consultancy. They build data, AI and software solutions for clients in a broad range of industries, working on demanding problems in challenging environments. The role They are looking for a Principal Software Engineer … lead delivery on demanding software projects. This role is focused on C++ and Rust development. This is a hands-on role for an experienced engineer who wants to stay close to the code. You'll lead a team of 6 to 12 engineers, own delivery ...

Principal Software Engineer C++ and Rust - is required by highly successful and fast growing technology consultancy. They build data, AI and software solutions for clients in a broad range of industries, working on demanding problems in challenging environments. The role They are looking for a Principal Software … Engineer to lead delivery on demanding software projects. This role is focused on C++ and Rust development. This is a hands-on role for an experienced engineer who wants to stay close to the code. You'll lead a team of 6 to 12 engineers, own delivery ...

Principal Software Engineer - C++ Robotics System London, United Kingdom | Posted on 21/04/2026 About the Company At sees.ai, we’ve built a system that enables unmanned aerial systems to carry out inspections of critical national infrastructure, making these missions repeatable, scalable, and commercially viable … prototype or a simulation. It’s a complex, integrated system already deployed and working in the field, solving real operational problems. Overview Principal Robotics/C++ Software Engineer – London (Hybrid) Define how a complex, real-world system scales — technically and organisationally. Now, following a major contract with National ...

Principal Data Engineer Salary: £125,000 + Benefits/Bonus Location: London 1/2 days per week Own the rebuild of a modern data platform from the ground up. We’re working with a business in the middle of a high-impact data transformation—moving away from … legacy constraints towards a scalable, cloud-first architecture. They’re looking for a Principal Data Engineer to take a leading role in that journey. This isn’t a role where you inherit a polished environment. It’s an opportunity to shape, modernise, and influence —from refactoring legacy pipelines ...

Principal Cloud Engineer - Azure Manchester (Hybrid - 1 day per week on-site) Salary up to £78,000 + Bonus We are supporting a UK-based organisation undertaking a significant, multi-year technology transformation. As part of this, they are investing heavily in their cloud platform and are seeking … Principal Cloud Engineer to play a key role in shaping and delivering their Azure environment. This position is suited to a hands-on engineer who enjoys building and improving platforms, rather than operating purely at an architectural or strategic level. Role Overview: The successful candidate will ...