101 to 117 of 117 Permanent Principal Systems Engineer Jobs

Technology is seeking a Principal Software Engineer in the UK to drive technical direction across public transit platforms. You will lead architecture decisions, mentor engineers, and ensure scalable, secure software delivering real-world impact. The role emphasizes C#, .NET, RESTful APIs, and modern tooling with opportunities to shape ...

Principal System Test Engineer Southampton Hybrid Working Competitive Salary + Bonus + Benefits Not all test roles are created equal. Some involve executing test plans that somebody else has written. This isn't one of them. We're working with a company developing advanced 5G and satellite communications ...

MBDA UK is seeking a Principal Test Engineer for its Bolton manufacturing team to lead test and diagnostics of electrical/electronic sub-systems and circuit cards. You will support test capability, generate specifications and operator instructions, and ensure quality targets are met throughout the product lifecycle. ...

Northern Trust is seeking a Principal Software Engineer to lead and mentor teams in London, delivering complex software solutions. You will leverage deep technical expertise to influence architecture, guide multi-disciplinary projects, and drive outcomes aligned with our business goals. The role emphasizes analytical thinking, decision making ...

TPXimpact is seeking a Principal Software Engineer to shape the technical direction of high-profile projects and lead delivery of modern, scalable software. You will mentor engineers across teams, line-manage a group, and collaborate with senior stakeholders to translate complex problems into robust solutions. We expect deep ...

Raytheon UK is seeking a Principal Software Engineer to join our established software development function in London. You will work in a cross-functional team, delivering and deploying critical software across multiple business areas. The role requires hands-on experience with React/NextJS, TypeScript, Python and Java ...

Raytheon UK is recruiting a Principal Software Engineer to join our onsite teams in Manchester and Gloucester. You will contribute to secure, mission-critical software across defence programmes, working in a cross-functional team with DevSecOps at scale and AI/ML capabilities. Applicants should be eligible ...

reaching well beyond iOS and Android. Based in Mobile Engineering, you will use a close connection to customer and product needs to shape backend systems across engineering organizations. You will help decide which cross-team problems to tackle and where architectural investment will have the greatest impact, then work … with the owning engineers to build and prove the solution in production. What You'll Do Shape the systems behind product experiences: Set technical direction for client-facing APIs and the backend architecture behind them. Work with service and platform owners to simplify how backend services connect and support ...

Anaplan Inc is looking for a Principal Data Engineer to work across the full stack of Anaplan AI applications. This role includes designing and building retrieval layers for agentic workloads and developing GenAI features that enhance real-time planning workflows. The ideal candidate will have deep knowledge ...

Sepura Limited is seeking a Principal Software Engineer to lead the architecture and performance of critical public safety systems. You will mentor teams, drive best practices, and shape the development lifecycle across C#/.NET platforms. The role emphasizes low-latency, highly available solutions, with a hybrid work ...

Leonardo UK in Basildon is seeking a Principal Test Engineer to support electro‐optical test equipment and test processes for Precision Guidance products, from development to production. You will contribute to test strategy, system design, and documentation while collaborating with production teams to resolve field issues. The role ...

Babcock is seeking a Principal Electromagnetic Compatibility Engineer at our Stoke Gifford, Bristol site with hybrid working. You will be the technical authority for EMC activities within Naval Nuclear, leading EMC testing and support on complex defence programmes. You'll collaborate with MoD stakeholders and internal teams ...

leading project solutions company in London is seeking a Principal AI Engineer to drive innovative AI initiatives. The ideal candidate will have strong leadership skills and deep technical expertise in AI and machine learning, overseeing the development of advanced AI systems. This high-impact role demands a visionary ...

RELX International in London is seeking a Technical Lead to balance hands-on software development with engineering leadership. You will shape technical direction, guide delivery planning, and collaborate with Product, Architecture, QE, SRE, and partner ...

Moody's is seeking a Principal Software Engineer-AI to lead strategy, delivery, and evolution of mission-critical AI platforms and intelligent applications within the Digital Content and Innovation organization. You will own multi-year architecture and technology roadmaps for AI platforms and guide multiple engineering teams ...

leading IoT technology firm is seeking a highly skilled Principle and Senior Backend Engineer (.NET) to design and develop critical backend services for IoT products. The role involves building scalable systems, ensuring high automated test coverage, and collaborating with various teams to create secure solutions. This position offers ...

culture You'll join the Product Test and Diagnosis team within Manufacturing Operations. The team defines and delivers test strategies across silicon, boards, server systems, and rack-scale platforms. Day to day, you'll work closely with engineers across hardware, firmware, software, manufacturing, and quality. Decisions are driven … automation (e.g., Python, Bash, or similar), including building reliable test infrastructure and integrating heterogeneous test content. Desirable Familiarity with rack‐scale/multi‐node systems, high‐speed interconnects, and production qualification of complex assemblies. Experience improving manufacturing KPIs (yield, test time, false fail reduction) through data‐driven test optimisation ...