Principal Engineer Jobs in United Kingdom

ABOUT THE JOB We’re looking for a Principal Engineer - Hydro to lead the design, development, and integration of advanced control systems across the hydro industry. In this senior role, you’ll take full ownership of technical solutions, guiding projects from concept through to delivery while ensurin

We are seeking a Principal Engineer (Platform Architecture) to help lead the design and evolution of our market-leading analytics platform, shaping technical direction while solving complex, real‑world problems at scale. About us Founded in 2014, Cassini is the established, core utility provider of

About 9fin 9fin is the AI platform powering global debt markets — the world’s largest asset class at over $145 trillion. Debt markets are vast, global, and mission-critical, yet still run on fragmented data, PDFs, and manual workflows. 9fin replaces this broken infrastructure with a single platform

Location: London, Warwick, Manchester, Derby At BakerHicks, ​​​​​​​our Electrical Services team works with clients across multiple sectors, delivering large and complex projects which require highly resilient power supplies. Specialising in heavily-regulated industries where qualit

BakerHicks has experienced rapid growth in the Transmission & Distribution sector over the past decade, securing major infrastructure projects across the UK. As demand for high-quality engineering design continues to rise, we’re looking for a Senior/ Principal Electrical Engineer – HV Dis

CoreWeave is The Essential Cloud for AI™. Built for pioneers by pioneers, CoreWeave delivers a platform of technology, tools, and teams that enables innovators to build and scale AI with confidence. Trusted by leading AI labs, startups, and global enterprises, CoreWeave combines superior infrastruct

Your Impact at LILA As a Principal Security Engineer focused on AI Security, you will define and drive the technical strategy for securing how AI is used across Lila's enterprise. You will operate as a senior individual contributor, partnering with IT and business teams to ensure safe and compliant

Company Overview Throughout our worldwide network of experts, clients and communities, we are renowned for our leadership in fire protection engineering – a legacy of responsibility we have proudly upheld since 1939. Today, our expertise extends broadly across closely related security and risk-based

At Anaplan, we are a team of innovators focused on optimizing business decision-making through our leading AI-infused scenario planning and analysis platform so our customers can outpace their competition and the market. What unites Anaplanners across teams and geographies is our collective commitme

Updated: 21 June 2026 Freelance | 8–20 hrs/week | Remote (EU/UK) Are you an accomplished Principal Software Engineer passionate about shaping the future of artificial intelligence? Join 10x Team as a Freelance Principal Software Engineer – AI Trainer and leverage your technical expertise to enhance

Canonical is a leading provider of open source software and operating systems to the global enterprise and technology markets. Our platform, Ubuntu, is very widely used in breakthrough enterprise initiatives such as public cloud, data science, AI, engineering innovation, and IoT. Our customers inclu

Fin is the AI Customer Agent company on a mission to help businesses provide perfect customer experiences. Our AI Agent Fin is the highest-performing AI Customer Agent on the market today, enabling businesses to deliver impeccable, always-on customer support across the customer journey – from servic

Fin is the AI Customer Agent company on a mission to help businesses provide perfect customer experiences. Our AI Agent Fin is the highest-performing AI Customer Agent on the market today, enabling businesses to deliver impeccable, always-on customer support across the customer journey – from servic

Job Title: Principal Engineer, Test – AI Core Services Development Location: Cambridge, UK Company OverviewAt Codvo, software and people transformations go hand-in-hand. We are a global empathy-led technology services company. Product innovation and mature software engineering are part of our core D