1 to 25 of 34 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 Engineer Python/Data Systems Salary: £80k-£100k Permax Recruitment is working in partnership with a London based firm who are on the lookout for a Principal Engineer in London to become an integral part of the team. Working within the Digital Assets industry for a finance firm who specialise in Crypto, Blockchain and Web3. More ❯

Principal Engineer Python/Data Systems Make sure to apply with all the requested information, as laid out in the job overview below. Salary: £80k-£100k Permax Recruitment is working in partnership with a London based firm who are on the lookout for a Principal Engineer in London to become an integral part of the team. 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 Platform Engineer London/WFH to £100k 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 - Lead the Future of UK GovTech Up to £95,000 + Elite Benefits Remote First (Just 1 Day Onsite Every Fortnight)?? SC Clearable - British Citizens Only Ready to lead innovation that matters? Join a mission-driven tech powerhouse where your code helps protect national interests, drive digital transformation, and shape the future of government technology. … We're looking for a Principal Software Engineer to architect cloud-native solutions, mentor brilliant engineers, and lead delivery across high-impact government programmes. This is your chance to combine deep technical expertise with strategic leadership in a collaborative, forward-thinking environment. You will need experience in Java, React.js and AWS to be successful in this position. What More ❯

Principal Cybersecurity Machine Learning Engineer The position is a senior technical role, requiring knowledge of data engineering, data science, advanced analytics techniques, research and development, and innovation within one or more of the Cybersecurity sciences (e.g. network, endpoint and cloud security, cryptography, malware analysis, vulnerability assessment, privileged access management, anomaly/intrusion detection, incident response, or offensive security … . The Principal Cybersecurity Analytics Engineer role is a key leadership, hands on technical role, contributing to, coordinating, and leading delivery of advanced analytics solutions to cybersecurity problems through rapid development of prototypes, engineering of production solutions, and exploration of longer term, potentially ground-breaking technologies. Cybersecurity-specific knowledge is required for the role, but exceptional candidates from 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 ❯

Join us as a Principal Engineer for CIAM at Barclays, where you will support the acceleration of a new digital platform capability, transforming and modernising our digital estate to build a market-leading digital offering with customer experience at its heart.The information below covers the role requirements, expected candidate experience, and accompanying qualifications. This is an exciting and 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 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 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 Security Engineer, AWS Security Job ID: Amazon Web Services Australia Pty Ltd This position can also be based in Sydney, Australia. We are looking for an experienced Principal Security Engineer to join the Security team in Australia. You will be on a team responsible for conducting both pre and post launch testing, offensive campaigns, emergent More ❯

Entity: Technology Job Family Group: IT&S Group Job Description: Were looking for a Principal AI Engineer who combines deep technical expertise with the ability to set direction, influence stakeholders, and shape the future of AI engineering across the enterprise. Our AI Acceleration organisation is building high-impact AI-powered applications that deliver measurable business value at speed. … As a Principal AI Engineer, you will serve as both a hands-on technical leader and a strategic partner driving architectural choices, aligning with business and technology stakeholders, and ensuring that our AI systems are secure, reliable, and scalable. This is a role for leaders who thrive at the intersection of disciplined engineering, AI innovation, and organizational influence. 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 ❯

Overview Mesh-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-on technical excellence and deep domain expertise in trading environments. You will architect and implement critical solutions that power real-time trading decisions, while mentoring teams and driving More ❯

to be as renowned for the quality of its engineering as it is for the quality of its content. We aspire to be the best so that we can engineer outstanding digital products, at scale. Working here in an engineering role means being part of a world-class team and a chance to do the most meaningful work of … to create the first personalisation platform rooted in public service values. We're looking for an experienced software engineering leader in Machine Learning to join us as a Senior Principal Software Engineer. You will be responsible for shaping, developing and delivering machine learning (ML) and artificial intelligence (AI) solutions. This will help create robust, scalable and innovative personalisation systems … business value. Identify and champion innovation within teams. Active participant in Industry ML forums and communities. Are you the right candidate? Significant experience as a senior individual contributor - Senior Principal Software Engineer/Staff Engineer. Excellent communication skills and experience with managing multi-disciplinary stakeholders. Extensive experience setting technical direction across multiple software engineering teams. Extensive experience in More ❯

on continuous deployment and iterative delivery, well-tested to ensure our code runs reliably, allowing you to focus on delivering value to merchants in a fluid manner. As a Principal Software Engineer, you will: Take responsibility for the success of the most important projects in the company. Solve highly complex challenges with simple solutions, often where neither the … defined. Be a significant hands-on contributor, delivering code contributions that demonstrate best practices and set a high quality bar on a regular basis. Work with a community of Principal Engineers and tech leaders to be a key influencer for strategic tech decisions, Continually evolve our engineering practices using data insights and industry knowledge. Mentor and coach other engineers More ❯

pre-release and production environments running on AWS. We operate a DevOps culture and are responsible for developing, deploying, operating and monitoring our team's deliverables. As the senior engineer in the team, you will set the technical standard for the team; offering mentoring and support to your team-mates. Requirements A desire and willingness to learn other languages More ❯

to create their own destiny and make a positive contribution to the world of banking and society. THE ROLE We are seeking a highly experienced and forward-thinking Senior Principal to lead DevOps Engineering across our AI products group. This role is critical in enabling the development, deployment, and scaling of cutting-edge AI products that transform banking operations More ❯