1 to 25 of 42 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 Systems Engineer £61500 GBP Hybrid WORKING Location: Frimley, Central London, Greater London - United Kingdom Type: Permanent Principal Systems Engineer - Defence Systems (Submarines) Location: Frimley (Hybrid) Salary: Up to £61,500 (DOE) A leading global defence engineering organisation is seeking a Principal Systems Engineer to provide technical leadership across critical Command and Control Systems … CCS) programmes within the submarine domain. As a Principal Systems Engineer, you'll lead design governance, manage technical risks, and support system integration across a wide stakeholder landscape. What You'll Be Doing: Lead CCS design activities and support Engineering Manager across in-service programmes Own technical decisions, manage scope and design changes, and engage suppliers early Coordinate … across system integration, validation, and verification What You'll Bring: Strong background in network or software engineering with operational insight Experience leading technical delivery in complex engineering environments Chartered Engineer status (or actively working towards) Expertise in Combat Systems , ideally within the submarine domain Hands-on experience with DOORS for requirements management Solid grasp of change control and technical More ❯

Principal Engineer 12 months Remote Active SC & NPPV3 clearance required Inside IR35 - Umbrella only Job Description Lead and mentor multiple engineering teams, fostering a culture of collaboration, innovation, and continuous improvement. Develop engineering capability through coaching, recruitment, and career development aligned with DDaT frameworks. Excellent development skills, with a depth of experience including C#, Java (Spring Boot, JPA … acceptance of changes by the Programme Manager or agent on behalf of PM during the Sprint Review. Supporting and mentoring junior staff Skills required We are looking for a Principal Engineer to join the SAS PPPT Leadership team. The ideal candidate will be able to demonstrate leadership of complex projects and stakeholder engagement. Leading Multiple Teams of Engineers 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 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 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 Infrastructure Engineer (Nutanix HCI IaC) London/WFH to £125k Opportunity to progress your career in an impactful Principal Infrastructure Engineer role at a global FinTech/CFD trading company that has been consistently voted as one of the UKs top employers. As a Principal Infrastructure Engineer you will play a pivotal role … skills You're collaborative and pragmatic with great communication skills, you're comfortable working with other teams and business stakeholders W hat's in it for you: As a Principal Infrastructure Engineer you will earn a competitive package: Salary to £90k + Bonus Pension, Private Medical Care, Life Assurance Option to buy or sell holiday days Wellness benefits … annual budget for organising events and projects that foster an open, diverse and inclusive culture Plus a range of other perks Apply now to find out more about this Principal Infrastructure Engineer (Nutanix HCI IaC) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We're 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 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 ❯

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. This is an exciting and key role, partnering with business aligned engineering and product teams, to ensure 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 ❯

Principal Software Engineer (Java/Python) London (Office Based) £100,000 - £115,000 + Progression + Training An excellent opportunity awaits an experienced software engineer with strong Java and Python skills for a hands-on technical leadership position within an innovative ML-driven SaaS firm, in a role offering technical growth, variety and strong development opportunities.The company … technical guidance and mentorship to more junior members of the development team. This role is office-based, five days per week, in Central London.The ideal candidate is an experienced engineer with strong Java and Python expertise, looking for a hands-on leadership position. Someone with strong architecture and AWS DevOps skills, along with solid hands-on experience in data … and third-party service integration*Mentor and guide the development team while working closely with management*Fully office-based role in Central London The Person: *Experienced hands-on software engineer with strong Java and Python skills*Strong AWS cloud infrastructure and containerisation experience*Skilled in building and managing data ingestion and processing pipelines*Living within a commutable distance to More ❯

Principal Software Engineer (Java/Python) London (Office Based) £100,000 - £115,000 + Progression + Training An excellent opportunity awaits an experienced software engineer with strong Java and Python skills for a hands-on technical leadership position within an innovative ML-driven SaaS firm, in a role offering technical growth, variety and strong development opportunities. The … guidance and mentorship to more junior members of the development team. This role is office-based, five days per week, in Central London. The ideal candidate is an experienced engineer with strong Java and Python expertise, looking for a hands-on leadership position. Someone with strong architecture and AWS DevOps skills, along with solid hands-on experience in data … and third-party service integration *Mentor and guide the development team while working closely with management *Fully office-based role in Central London The Person: *Experienced hands-on software engineer with strong Java and Python skills *Strong AWS cloud infrastructure and containerisation experience *Skilled in building and managing data ingestion and processing pipelines *Living within a commutable distance to 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 Control Systems Engineer Transmission & Protection Systems Location: Fully Remote (UK-based) Salary: Circa £85,000 + Bonus + Benefits Overview This role offers the opportunity to lead technical delivery on major infrastructure projects, shaping engineering processes and mentoring a high-performing team. Key Responsibilities forPrincipal Control Systems Engineer Lead the delivery of transmission protection and automation … feedback Support testing activities including FAT, settings validation, and interface design Promote a culture of continuous improvement and knowledge sharing across the team Skills & Experience Required forPrincipal Control Systems Engineer Proven experience delivering protection and control systems within multidisciplinary engineering teams Strong understanding of UK transmission network standards, particularly National Grid specifications Experience in Contractor Design Approval (Assurance or … skills across technical and non-technical stakeholders Minimum HNC/HND in Electrical Engineering (or equivalent), with extensive experience in the electricity transmission and distribution sector Benefits Package for Principal Control Systems Engineer Performance Bonus: Annual bonus linked to company performance Flexible Working: Fully remote role with flexible hours to support work-life balance Pension Scheme: Employer contributions More ❯

Principal Data Engineer - Hybrid (London/Winchester) We're seeking a hands-on Principal Data Engineer to design and deliver enterprise-scale, cloud-native data platforms that power analytics, reporting, and real-time decision-making. This is a strategic technical leadership role where you'll shape architecture, mentor engineers, and deliver end-to-end solutions across … CI/CD and IaC. Collaborate with data scientists, analysts, and business stakeholders. Mentor and guide data engineering teams. What we're looking for Proven experience in senior/principal data engineering roles. Expertise in AWS, Databricks, Apache Spark, Python, and SQL . Strong background in cloud-native data platforms, real-time processing, and data lakes. Hands-on experience More ❯

Job Description - Principal Software Engineer (16102) Description easyJet holidays is the UK's fastest-growing tour operator, launched in 2019 and already making significant strides in the travel industry. We combine easyJet's vast flight network with over 5000 handpicked hotels and state-of-the-art technology to deliver unbeatable holiday packages across more than 100 destinations in … keep us ahead in a competitive market. We are a close-knit group that thrives under pressure and drives the company's technological advancements. We are looking for a Principal Software Engineer to lead complex projects and innovate our architectural practices. This role involves steering the technical direction, mentoring junior engineers, and enhancing our software development lifecycle to 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 Quantitative Engineer - SOLE AGENT An exciting opportunity to join a world-class investment environment, driving innovation at the intersection of finance and technology. As Principal Quantitative Engineer, you will shape in-house data capabilities, enhance financial modelling, and directly influence high-value investment decisions. The Role You'll design and implement a robust data warehouse … high-performing global investment setting. Drive innovation in asset-backed investment analytics and modelling. Long-term career potential with significant visibility and impact. If you're a driven Quantitative Engineer looking to apply your skills in a fast-paced investment environment, we would love to hear from you. More ❯

a focus on improving diagnosis, treatment, and prevention of illness, this company is making a tangible difference-and you could be at the forefront of that mission. As a Principal Engineer, you will play a pivotal role in driving this innovative vision forward. Joining a company with a proven track record of success, you'll have the chance More ❯

Principal Software Engineer London £90,000 – £115,000 bonus Instead of being one of hundreds of engineers in a bank or FAANG, you’ll be the hands-on technical authority , shaping standards, pipelines, and engineering direction for the firm. Here you’ll have visible impact , with scope to explore GenAI/LLMs in production —no legacy lock-in More ❯

Role: Principal Software Engineer Location: Hybrid in London Salary: £100,000 - £135,000 You will support in accelerating a new digital platform capability, transforming and modernising our digital estate to build a market-leading digital offering with customer experience at its heart. This is an exciting and key role, partnering with business aligned engineering and product teams, to More ❯

Overview Access Talent Group are currently recruiting for a Small Multidisciplinary design consultancy in Central London. We are searching for a talented and motivated Senior Civil Engineer or Principal Civil Engineer to join their Infrastructure team of 12 people. You will be working across the transportation, development, and public realm sectors, you'll be at the heart More ❯

We are looking for a Principal Software Engineer (we call them Principal Software Craftspeople) who shares the same values of pragmatism, professionalism and transparency as us to join our team. You'd be utilising your expertise with clients, helping to shape Codurance, and being involved in coaching and mentoring across the company. We support our clients in More ❯

Select how often (in days) to receive an alert: Department: INFORMATION TECHNOLOGY City: London Location: GB INTRODUCTION JOB PURPOSE The Principal Engineer will act as a technical thought partner and knowledge anchor for platform engineering across our Digital ecosystem. You will own key aspects of our backend and infrastructure strategy, advise delivery and architecture teams, and ensure continuity … grow the right capabilities. Support the evolution of delivery models and team structures with a focus on knowledge continuity and internal capability uplift. PERSONAL PROFILE Proven experience as a Principal or Staff Engineer in a cloud-native environment, ideally with strong exposure to AWS (Lambda, Fargate, CDK/Terraform, etc.). Deep backend engineering knowledge, particularly using Node.js … environments is a plus. Burberry is an Equal Opportunities Employer and as such, treats all applications equally and recruits purely on the basis of skills and experience. Job Segment: Engineer, QA, Quality Assurance, Engineering, Quality, Technology More ❯