1 to 25 of 65 Permanent Principal Engineer Jobs in London

PRINCIPAL DEVOPS ENGINEER- SC CLEARED PRINCIPAL DEVOPS ENGINEER- Permanent opportunity for a Principal DevOps Engineer with SC Clearance. - Salary up to £110,000 DOE - Hybrid opportunity with London based offices - To apply, please call Laura Jackson on , or email with an up-to-date … CV. WHO ARE WE We're hiring for DevOps Engineers at principal level to join a top consultancy delivering cutting-edge solutions for industry-leading Public Sector and Defence clients. You'll have the opportunity to work across multiple high-impact, innovative and mission-critical projects, shaping solutions that ...

Principal Engineer - Communications Surveillance Technology Our client, a leading name in global financial markets, is expanding its Communications Surveillance and Record Keeping Technology function in response to increasing regulatory scrutiny. With regulators worldwide elevating expectations around Market Abuse monitoring and robust Record Keeping controls, this is a critical … high‐profile hire. We are seeking an exceptional Principal Engineer to play a central technical leadership role within their Surveillance Technology team. This is an opportunity to influence strategy, shape engineering standards, and drive innovation across a complex, business‐critical technology landscape. The Opportunity Communication Surveillance and mobile ...

Principal Engineer Location : Waterloo, London, England, UK | Hybrid (1 day per week in office) Who We Are At 8th Light, we bring life to the best ideas. Founded in 2006 and headquartered in Chicago, we are a technology solutions provider that partners with organizations to solve meaningful challenges … benchmark our salaries using Geographic Structures to establish competitive pay ranges within the regions where 8th Lights live. Our pay ranges for our Principal Engineer position within London is: £92-818-£116-122 GBP Reach out to recruiting@8thlight.com for more relevant information pertaining to your local market. ...

Principal Engineer Check below to see if you have what is needed for this opportunity, and if so, make an application asap. - Managed IT Services Bedfordshire (Hybrid Working) Up to £62,000 Benefits Permanent SF Technology is recruiting for a Principal Engineer to join a growing … Hybrid working Career progression opportunities Exposure to modern cloud and security technologies Supportive and collaborative culture If you're an experienced senior engineer looking to take on a technical leadership role within a growing organisation, we'd love to hear from you. Apply now or contact SF Technology ...

Principal Full Stack Engineer & Architecture Lead, Great Company going through massive growth. London (Hybrid) £100,000-£110,000 + Benefits Command Recruitment is proud to be partnering with an ambitious and rapidly growing healthcare company that is transforming access to specialist healthcare services across the UK. Expected … only 3 Years ago! This is the time to join this fast-moving and Growing Business This is a fantastic opportunity for an experienced Principal Engineer or Technical Architecture Lead to play a key role in shaping a modern, cloud-native healthcare platform that is making a genuine ...

Principal Full Stack Engineer & Architecture LeadLondon (Hybrid)£80,000 - £90,000 + BenefitsCommand Recruitment is proud to be partnering with an ambitious and rapidly growing healthcare company that is transforming access to specialist healthcare services across the UK.This is a fantastic opportunity for an experienced Principal Engineer … innovative healthcare service platforms and is seeking a hands-on technical leader who can combine strategic architecture with strong full-stack engineering expertise.The OpportunityAs Principal Full Stack Engineer & Architecture Lead, you will take ownership of platform architecture, engineering standards, cloud infrastructure, and technical delivery across the business.You ...

Principal Engineer Jobs in UK 2026 (GBP 200,000 to 250,000) Enterprise cybersecurity continues to evolve rapidly as financial institutions invest heavily in advanced threat detection, automation, and large-scale security analytics. This Principal Cybersecurity Engineer role in London offers senior technical leaders the opportunity … contributing to high-impact engineering direction within a global financial services organisation. The role includes visa sponsorship for eligible candidates. About the Role The Principal Cybersecurity Engineer role focuses on designing and building next-generation security capabilities that leverage large-scale telemetry, advanced analytics, and automation. The position ...

Principal AI Platform Engineer UBDS Group delivers modern cloud, data and AI solutions across public and private sector organisations. We design and build scalable, secure and production‐ready platforms that solve real‐world problems and deliver measurable outcomes. We’re looking for a Principal AI Platform Engineer … platforms and production AI solutions, guide delivery teams and help expand AI engineering as a core capability within UBDS. The Role As a Principal AI Platform Engineer at UBDS, you will lead the design and implementation of AI architectures across complex transformation programmes. What You’ll Do Lead ...

Senior Software Engineer/Principal Software Engineer- C++, Python - Financial/Banking. Candidates will have a minimum 8+ years C++ experience and excellent knowledge of Python -coming from a Financial/Banking background with knowledge of Equities, Futures & Options and Fixed Income and Exchange Connectivity. Job Overview … amount of TPS to drive a highly efficient technology used by several markets around the world. To be successful in this role as a Principal Software Engineer - C++, you will be a proponent of agile methodology and modern software best practices. You can produce detailed technical work ...

Senior/Principal Palantir Engineer UK (Hybrid) | Permanent | Data & AI Platform About the Role: Highly reputable organisation currently building a high-impact Data & AI capability and are looking for a Senior/Principal Palantir Engineer to help shape and scale their platform from the ground up. … Shape the direction of a rapidly expanding capability Collaborate with senior stakeholders across the business Solve meaningful, real-world operational challenges Ideal Backgrounds Palantir Engineer/Foundry Engineer Forward Deployed Engineer (FDE) Senior Data Engineer (with Foundry experience) AI/Data Platform Engineer ...

Principal Network Engineer - Cisco Network Engineer London (Hybrid – 60/40 split) Permanent | Competitive Salary + Benefits About the Opportunity We’re partnering with an innovative full-fibre broadband provider transforming connectivity across London. This fast-growing organisation is delivering next-generation FTTP (Fibre to the Premises … infrastructure, enabling ultra-fast, reliable connectivity for homes and businesses. They’re now looking for a Principal Network Engineer to play a pivotal role in shaping, scaling, and optimising a carrier-grade network in a high-performance, fast-paced environment. The Role As a Principal Network Engineer ...

global financial services organisation seeks a Principal Cybersecurity Engineer to help build the next generation of data-driven security capabilities at exceptional scale. This is a senior (Director grade) individual contributor position. The role requires a candidate with deep cyber expertise and elite hands-on software engineering ability … help solve cutting-edge problems that do not have obvious off-the-shelf answers. This is a rare opportunity for a cyber-minded principal engineer who wants to build, challenge, influence and operate at serious scale as an IC technical leader. Base salary up to £250,000 + ...

Principal Software Engineer – Go | Distributed Systems £160,000-£200,000 + 15% bonus + Equity Go/Python/Rust - Kubernetes, AWS, Distributed Systems Hybrid (Central London, 3 days a week in office) Broad/Complex Technical Environment Well-funded Series B deep-tech company We’re partnered … hardware, software and AI as a platform to increase efficiencies in an industry where time can truly save lives. Responsibilities They’re hiring a Principal Software Engineer to act as technical authority across a number of small product teams. You’ll lead technical direction, shape system architecture, mentor ...

Azure Principal Platform Engineer This position allows you to join a fast-growing technology organisation focused on the critical migration and architectural evolution of our .NET services from AWS to Azure. If you are passionate about cloud-native transformation and want to lead the shift toward asynchronous, high … scale architectures, this opportunity is for you. Role Summary As an Azure Principal Platform Engineer, you will act as the authoritative Subject Matter Expert (SME) to help a major fintech architect, bootstrap, and build from scratch an enterprise-grade, multi-tenant AKS platform on a greenfield Azure landing ...

taking the direct route or trying a new path, we’ll support you no matter what. The Role We’re looking for a Principal Engineer – Payments to join Masabi’s Architecture team, with a primary focus on our payments domain. This is a senior role for someone … Good understanding of payment flows, transaction lifecycles and system design considerations Experience designing and evolving distributed systems and microservices architectures You’ve operated at Principal or Staff level, shaping technical direction across multiple teams or domains Strong judgement and the ability to balance short‐term delivery with long‐term ...

慨正橡扯 is hiring a Principal Engineer in London. You'll leverage over 10 years of experience in software development, guiding technical direction and driving innovation for various clients. This role involves building high-quality software, mentoring teams, and fostering client relationships. The position is hybrid, requiring ...

Marlin Selection Ltd is searching for a Principal Engineer in London to lead the Communications Surveillance Technology team. This role involves technical leadership, mentoring engineering talent, and influencing architectural decisions. Candidates must have proven experience in Communications Surveillance Technology, a strong background in software development lifecycle, and excellent ...

Title Principal Engineer Salary £100,000 + 2% Equity Company Description Rivulo.ai - VC-backed AI automation startup Job Description As the first technical hire, you will own the architectural evolution of an agentic workflow platform. Transitioning the codebase from the technical co‐founder, you'll build robust systems … with customers to understand friction points, translating messy real‐world operational needs into elegant, automated agent‐led systems. The ideal candidate Expert full‐stack engineer with deep TypeScript/JavaScript proficiency and professional experience (or a strong willingness to master) PHP/Laravel 12. Proven track record ...

leading name in global financial markets seeks a Principal Engineer to drive technical leadership within their Surveillance Technology team. This pivotal role involves overseeing complex systems design, fostering engineering best practices, and mentoring talent. Ideal candidates will have strong technical backgrounds, a deep understanding of communications surveillance technologies ...

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 ...

Durlston Partners LLP in London is seeking a Principal Engineer to lead within their Engineering function. You will be the 'go to person' for finance and tech questions, contributing hands-on to front-office and systems projects. The role offers a compensation package exceeding £180k base, equity from ...

Crawford Legal Advokatfirma As seeks a Principal Engineer - Recovery & Resilience to design and implement enterprise-wide recovery capabilities. This role emphasizes hands-on execution, orchestration, and automation of recovery processes. The ideal candidate will lead recovery workflows, optimize backup tools like Commvault, and collaborate with various teams ...

well-established, but fairly early-stage (less than 200 employees) trading firm based in London, dedicated to becoming a leading figure. Looking for a Principal Engineer, need a “go to person” for Finance & Tech questions. This will be a nice mixture of leadership/hands-on responsibilities within ...

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 Software Engineer/Developer (Python AWS) London/WFH to £150k Join a high-growth, VC-backed Fintech building a market-leading analytics platform used by Hedge Funds, Asset Managers and global financial institutions. As a Principal Software Engineer, you will play a pivotal role ...