Software Engineer, Principal United Kingdom Jobs

Principal Embedded Software Engineer sought to lead embedded systems architecture and technical delivery in Bradford, UK. This senior, hands-on role demands advanced C/C++, RTOS, and multithreading expertise, plus electrical power systems knowledge. You will own the full software lifecycle, from ...

Principal Embedded Software Engineer sought to lead architecture, technical delivery, and strategy for advanced embedded systems in Manchester. This senior, hands-on role demands expertise in C/C++, RTOS, real-time systems, and electrical power systems knowledge. You will own end-to-end product d...

Principal Embedded Software Engineer sought to lead architecture, technical delivery, and strategy for advanced embedded systems in the UK. This senior, hands-on role demands expertise in C/C++, RTOS (FreeRTOS), and electrical power systems theory. You will own end-to-end product delivery, drive ...

Principal Technical Safety Engineer role in Warrington, UK, blending software development with risk management. You'll lead QRA, CFD, and RAM studies while maintaining and developing internal software using Python, C#, and .NET. Requires 8+ years in technical safety and full-stack skills. Benefit...

Principal Software Engineer sought for Citi’s Margin Technology team in London. Design and build high-scale distributed systems using Java, Python, or React, with AWS, Kafka, and Kubernetes. Drive innovation in global finance, shaping automated platforms with a focus on clean code and TDD. Benefi...

Principal Software Engineer role in London with Microsoft’s ISE team. You’ll co-develop cloud-based AI solutions alongside enterprise customers, using C#, Python, or Java. Requires consultative experience, cross-functional collaboration, and up to 25% travel. Enjoy a competitive benefits package ...

Principal Software Engineer sought by RX Global in Richmond, UK. Drive domain architecture, mentor senior engineers, and own technical roadmaps for high-impact systems. Requires deep expertise in distributed systems, cloud-native AWS solutions, and legacy modernisation. Lead through influence, ba...

Join Microsoft AI's health team in London as a Principal Software Engineer. You will translate cutting-edge AI research into transformative products, building a world-class health companion. We seek an expert in scalable systems (C#, Python, etc.) with a passion for robust, user-centric engineeri...

Join a rapidly growing AI startup as a Principal Software Engineer. Design and deliver production-grade systems where intelligent agents operate at scale. We seek 10+ years of backend expertise (Python/Go) and hands-on AI agent experience. Enjoy a fully remote role in the UK with competitive pay ...

Lead the development of cutting-edge maritime defence systems, including underwater vehicles and sonar, as a Principal Embedded Software Engineer. This Dorchester-based role requires expert C/C++ skills and experience with safety standards like SIL/ASIL. You will define technical processes and bu...

Lead the technical vision as a Principal Software Engineer at Automata, shaping scalable, software-defined lab automation in London. You'll architect our core platform using Golang, Kubernetes, and distributed systems, with 12+ years of backend expertise. Mentor senior engineers, enjoy comprehens...