14 of 14 Principal Engineer Jobs in the City of London

Principal Engineer - Series A Scale Up - Up to £270,000 I'm currently looking for a Principal Engineer to join a high-growth, YC-backed AI startup based in London. It's a hands-on IC role focused primarily on scalable backend systems and genuinely … fixing hard systems problems that unlocked scale – Have real hands-on Python experience If this sounds like a fit, please get in touch. Principal Engineer - Series A Scale ...

Title - Principal Engineer Location - London Salary - £78,969 - £98,711 About this role The Principal Engineer for Platform Integration & Architecture is accountable for improving how CDP’s services and systems integrate. You will document and make legible the current state, align engineering leaders on shared integration … with tech leads and squads, staying hands‐on where needed, and supporting delivery through design input, reviews, and decision‐making. This is the first Principal Engineer role; we envisage it becoming its own team of senior engineers at the same grade as Tech Leads but with stand‐alone ...

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 ...

Principal Software Engineer We are looking for a highly experienced Principal Software Engineer with strong backend engineering expertise and a passion for scalable distributed systems. You will play a key role in shaping architecture, engineering standards, and technical direction across the platform. Join a fast-growing … Banking SaaS provider building next generation core banking technology. We are looking for Principal Software Engineers with experience in Node.js/TypeScript/JavaScript, .NET/C#, or Java. You will work directly on customer problems, understand the business context and own solutions end-to-end. From concept ...

Principal Engineer – Advanced AI Engineering Location: London, Bristol, Edinburgh, Leeds, or Manchester. Salary: £84,624–£128,580 (depending on location and experience). Working Pattern: Hybrid – at least two days a week (40% of time at office). Overview Join the Advanced AI Engineering team in the Data ...

Type: Permanent Build a brilliant future with Hiscox Principal Machine Learning Engineer Location: London/York Why Hiscox London Market Hiscox London Market sits at the centre of global specialist insurance, tackling some of the most complex and unusual risks in the world. These are not commoditised problems … values technical excellence, ownership, and courage, where senior individual contributors are trusted to set direction, challenge thinking, and build platforms that matter. For a Principal Machine Learning Engineer, this is a chance to work on high‐impact ML systems, influence how AI is adopted across the London Market ...

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 ...

June 2026 Salary Range: £84,624 - £126,936 We support flexible working – click here for more information on flexible working options. Job Title Principal Engineer – AI productivity lab Salary £84,624 - £128,580 Location London, Bristol, Edinburgh, Leeds or Manchester Hours Full-time – 35 hours Working Pattern Hybrid ...

Lloyds Bank plc is seeking a Principal Engineer for their AI productivity lab. This full-time role requires expertise in solutions architecture and software engineering while focusing on developing AI tools and capabilities. You will work closely with the lab's Head and stakeholders to embed AI into ...

Role Overview Senior Business Analyst to support TP ICAP’s Communication Surveillance Tech Programme. The role requires a highly skilled, hands‐on engineer with expertise in Communications Surveillance and Record Keeping Technology. Responsibilities include leading design, development, and implementation of systems, mentoring team members, and ensuring adherence to architectural … principles and quality standards. Responsibilities Act as the primary technical leader and engineer within the team. Provide technical oversight for analysis, design, and delivery of complex systems. Architect and develop high-performance, scalable, and robust solutions for Communications Surveillance and Record Keeping. Ensure adherence to best practices, including architecture ...

seeking a highly capable Principal Development Engineer to contribute to the technical architecture, integration design, and evolution of our enterprise platform. Key Responsibilities Project Scoping & Estimation: Conduct initial scoping and high‐level costing for potential client projects. Provide effort estimates and assess integration complexity, ensuring a clear understanding ...

Role Mission To support customer outcomes by making deep, hands-on Microsoft centric expertise available to customers and internal teams across hybrid identity, security and endpoint management. This includes Windows Active Directory and integration with ...

Framework Engineeringand AI-augmented testing Leadership and Strategic Influence Multi-Specialism Technical Expertise What this role is all about: Join Vitality as a Principal Test Engineer and help shape how quality is delivered click apply for full job details ...

Hiscox Underwriting Group Services Ltd (HUGS) is seeking a Principal Machine Learning Engineer to lead the technical strategy for production ML systems in the London/York area. This position requires extensive experience in machine learning engineering and an ability to influence the adoption of AI within ...