22 of 22 Principal Engineer Jobs in London

Principal Engineer - Lead Tech Strategy for a Profitable FinTech Scale-Up Hybrid (London) or remote within the UK Up to £160,000 per annum plus stock options Python | Django | FastAPI | AWS | Rust | Postgres | Event-Driven Architecture | Machine Learning Principal Engineer - We're working with a leading fintech scale-up that's transforming how small businesses access … finance. Backed by a strong track record and an ambitious mission, they're now looking for a Principal Engineer to lead the next phase of innovation within one of their most critical product areas. This is a strategic leadership role offering exceptional autonomy and influence. You'll head up the evolution of a high-impact platform responsible for … generating personalised credit offers - a core driver of the business's growth and customer experience. The Opportunity As Principal Engineer, you'll take ownership of the technical strategy and architecture for dynamic, data-driven systems that determine the financial products offered to new customers. This is a unique chance to define the future of adaptive credit systems, driving More ❯

Principal Software Engineer - Lead the Future of UK GovTech Innovation ?? Up to £100,000 + Premium Benefits Package ?? Remote-First | Just 1 Day Onsite Every 2 Weeks ?? SC Clearable | British Citizens Only ?? Where Technology Meets Purpose Are you ready to lead engineering efforts that directly impact national security, public services, and digital transformation across the UK? This is … more than just a job-it's a chance to build technology that matters , in a space where innovation meets mission-critical delivery. We're looking for a Principal Software Engineer to join a high-performing team at the forefront of UK GovTech. You'll architect secure, scalable platforms, mentor elite engineers, and shape technical strategy across programmes … that serve millions of citizens and protect national interests. ?? Your Mission As a Principal Engineer, you'll be a technical leader, strategic thinker, and hands-on problem solver. You'll work closely with delivery teams, stakeholders, and government partners to ensure solutions are robust, secure, and future-proof. What You'll Be Doing: ?? Architect cloud-native platforms using More ❯

Principal Software Engineer - Lead the Future of UK GovTech Innovation Up to £100,000 + Premium Benefits Package Remote-First | Just 1 Day Onsite Every 2 Weeks SC Clearable | British Citizens Only Where Technology Meets Purpose Are you ready to lead engineering efforts that directly impact national security, public services, and digital transformation across the UK? This is … more than just a job-it's a chance to build technology that matters , in a space where innovation meets mission-critical delivery. We're looking for a Principal Software Engineer to join a high-performing team at the forefront of UK GovTech. You'll architect secure, scalable platforms, mentor elite engineers, and shape technical strategy across programmes … that serve millions of citizens and protect national interests. Your Mission As a Principal Engineer, you'll be a technical leader, strategic thinker, and hands-on problem solver. You'll work closely with delivery teams, stakeholders, and government partners to ensure solutions are robust, secure, and future-proof. What You'll Be Doing: Architect cloud-native platforms using More ❯

Principal DevOps Engineer Active SC Required £727 Inside for 6 months Remote - London office Sanderson Government and Defence are supporting a government supplier in their search for a Principal DevOps Engineer on a contract basis. This role will be on a fully remote basis. Requirements are as follows: Proven experience at Lead/Principal Engineer More ❯

Principal Software Engineer page is loaded Principal Software Engineer Apply locations: London Type: Full time Posted on: Posted Yesterday Job requisition id: R98993 About our Team : Elsevier is a global information analytics company that helps institutions and professionals progress science, advance healthcare, and improve performance for the benefit of humanity. We serve the research, academic, and … and innovative technologies. We support our corporate customers, R&D professionals, engineers, scientists, and marketing leaders to innovate and commercialize ideas, products, and processes. About the Role: As a Principal Software Engineer, you will participate in technical discussions to design solutions that meet product requirements, develop test-driven code, pair with team members, mentor juniors, and support existing More ❯

Principal Software Engineer - Shape the Future of UK GovTech ?? Up to £95,000 + Premium Benefits ?? Remote-First | Just 1 Day Onsite Every 2 Weeks ?? SC Clearable | British Citizens Only Lead Innovation. Drive Transformation. Make an Impact. Ready to take the reins on projects that power national security and digital transformation ? This is your chance to lead at … the intersection of technology and purpose . As a Principal Software Engineer , you'll architect cloud-native platforms , mentor elite engineering teams, and influence technical strategy across mission-critical government programmes . Your work won't just be code-it will shape the future of UK GovTech . Your Role in Action ? Architect secure, scalable, resilient systems using More ❯

Principal Software Engineer - Shape the Future of UK GovTech Up to £95,000 + Premium Benefits Remote-First | Just 1 Day Onsite Every 2 Weeks SC Clearable | British Citizens Only Lead Innovation. Drive Transformation. Make an Impact. Ready to take the reins on projects that power national security and digital transformation This is your chance to lead at … the intersection of technology and purpose . As a Principal Software Engineer , you'll architect cloud-native platforms , mentor elite engineering teams, and influence technical strategy across mission-critical government programmes . Your work won't just be code-it will shape the future of UK GovTech . Your Role in Action Architect secure, scalable, resilient systems using More ❯

Principal Data Engineer - Core Systems Team Hybrid in London/Remote within UK The company Imagine a world where every small business has the power to thrive. That's the world we're building at iwoca. Small businesses aren't just statistics - they're the heartbeat of our communities, the character of our high streets, and the engine … iwoca products. We follow Agile-inspired processes, using continuous integration and delivery, so that features go live in days or weeks, not months or years. The role As the Principal Data Engineer, you'll be responsible for our data platform. You'll define our data strategy, drive the evolution of our data infrastructure, and ensure our data systems More ❯

business, understand our clients' needs and maintain our professional, supportive and entrepreneurial working culture that we all enjoy. What You'll Do We're looking for a highly skilled Principal Engineer with a passion for data, cloud technologies, and building robust, scalable solutions - who also brings strategic product thinking and cross-functional leadership . In this role, you More ❯

Principal Data Engineer – Winchester/London (Hybrid) - £84,000 + 10% bonus 1-2dpw in office | Greenfield Enterprise Data Platform Build | Flexible Working | Private Medical Ada Meher are working with the market leader in Digital Telecommunication & Broadcasting technology solutions as they recruit for a Principal Data Engineer to join them on their migration project from … business also has an extremely competitive benefits package including, but not limited to, Private Medical, enhanced pension contributions & wellness/gymflex programmes.We are expecting a strong response to this Principal Data Engineer role, so please apply send a CV in to today to avoid missing out More ❯

Principal Embedded Software Engineer - AI & Robotics | £60,000-£70,000 | Hybrid (Central London) Are you an experienced Embedded Software Engineer with a passion for cutting-edge technology? Join a fast-growing, well-funded scale-up at the forefront of developing AI And Robotic Unmanned Aircraft Systems. As a Principal Embedded Software Engineer , you'll play More ❯

Principal Python Engineer London | Permanent | Hybrid Ncounter is supporting a global investment firm in hiring a Software Developer to help design and evolve internal compute frameworks that underpin their trading and research platforms. This is a high-impact role, working at the intersection of software engineering and distributed systems, with the opportunity to build scalable tools and frameworks … CD automation This role offers the chance to work on complex technical challenges at scale, with direct impact on high-performance computing platforms. If you’re a skilled Python engineer with distributed systems expertise and want to join a world-class engineering environment, apply today for a confidential conversation. More ❯

Principal BMS/Controls Engineer – City of London - £70 – 80k + Bonus + Package I am currently working in partnership with an International MEP Consultancy who are looking to appoint a Principal BMS/Controls Engineer into their expanding London City office. Having opened their first office 15 years ago they now have offices located throughout … throughout the UK and Europe. On top of this they also work on projects within the High Rise, Leisure, Healthcare, Aviation and Retail sectors across the globe. As a Principal BMS/Controls Engineer your duties will involve: Develop a strong relationship with Clients and Fellow Professionals. Attend and contribute to Technical/Committee Meetings within organisation. Contribute More ❯

Principal Engineer This is a fantastic opportunity to work in a product-led operating model, where all our teams are value stream aligned with all the different resource types needed to get from idea to done with minimal hand-offs. Open to multi locations (2-3 days a week): LondonTunbridge WellsBournemouthBristol We're focused on building out our More ❯

We are looking to hire a Senior or Principal Engineer for our PFI contract in Portsmouth. Main Purpose of the Job We are currently seeking to recruit an enthusiastic and experienced Engineer to join our Civil Structures Team on the Portsmouth City Council Highways PFI Contract with Colas Ltd. The successful candidate will support the team in More ❯

moving from legacy .NET Framework systems toward modern, containerised .NET 8/9 services running on Kubernetes in both on-prem and cloud environments. 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 … fostering collaboration across teams. Architect and implement solutions that span software and infrastructure, balancing resilience, scalability, and maintainability What We're Looking For 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 ❯

About The Role Deadline for applications: 11:59pm on 31st October 2025 Were looking for a Principal Software Engineer to shape the technical direction of high-profile projects and lead the delivery of modern, scalable software. We use technology to create impactful, human-centred solutions that make a difference to users and organisations. We believe great engineering happens … project risks, helping teams navigate complex technical challenges. About You Professional knowledge and experience Essential Extensive experience in software engineering, with a focus on large-scale, complex systems. Polyglot engineer comfortable working across multiple languages and frameworks (weve used Python, Java, Kotlin, Node.js, C#, JavaScript, Express, React and Next.js to name a few). Passion for learning new technologies More ❯

GitHub Enterprise SME Remote | Inside IR35 | £600-£675 per day | UK hours | Initial contract A global organisation is seeking a GitHub Enterprise Subject Matter Expert to lead governance, consolidation, and platform administration across a large-scale environment. You'll take More ❯

health care - access to medical coverage. Career development opportunities - training, progression, or upskilling. Performance bonuses - additional reward based on achievements. The role: We are seeking an experienced Control Systems Engineer with expertise in PLC and SCADA systems to join a team delivering mission-critical naval platform management solutions. This role offers the opportunity to design, develop, and maintain advanced More ❯

DV Cleared Data Engineers Wanted – London – AWS or Azure – Senior/Principal We’re supporting a leading global consultancy with the expansion of their secure data engineering team, and we’re looking for DV Cleared Data Engineers to join major projects in London. If you hold active DV clearance and want to work on cutting-edge, mission-critical programmes … Join a consultancy with strong growth and technical innovation Excellent benefits, bonuses, and structured career progression Quick process – interview next week Interested? If you’re a DV Cleared Data Engineer ready for your next challenge, apply directly or message me in confidence. #DataEngineer #DVCleared #AWS #Azure #AWS #EngineeringJobs #DataJobs #SecurityCleared #UKJobs More ❯

About Entourage: We're building the infrastructure layer that will power the next generation of AI agents: collective intelligence. Entourage is a shared memory protocol that lets AI agents learn from each other's discoveries, building collective intelligence that gets More ❯

Are you ready to shape the future of intelligent buildings and mission-critical environments? We’re looking for a skilled Network/IT Design Engineer to join our dynamic team and lead the technical delivery of innovative ICT systems across high-profile projects. You will be able to: Define Scope & Interfaces : Lead the creation of Demarcation Documents, clearly outlining More ❯