401 to 425 of 624 Principal Engineer Jobs in the UK

Marks & Spencer Plc’s Software Engineering team is seeking a Principal Software Engineer to provide senior technical leadership across our International Fashion, Home & Beauty domain and shape mission-critical platforms for international growth. You will set technical direction, drive scalable and secure solutions, mentor engineers, and collaborate with ...

leading aerospace technology company in Tewkesbury is seeking an experienced Senior Principal Software Engineer to drive software development for advanced flight control and actuation systems. This hybrid role requires over 15 years in software engineering, in-depth expertise in safety-critical software, and proficiency in C/C++. ...

leading aerospace technology company in Tewkesbury is seeking an experienced Senior Principal Software Engineer to drive software development for advanced flight control and actuation systems. This hybrid role requires over 15 years in software engineering, in-depth expertise in safety-critical software, and proficiency in C/C++. ...

Simple Machines is a leading boutique technology firm seeking a Principal Software Engineer to design and deliver complex, scalable systems across backend, APIs, frontend, data pipelines, and cloud infrastructure. You’ll work with internal teams and client stakeholders, owning outcomes end-to-end in a consultative engineering environment. ...

Viasat UK is seeking a Principal Systems Engineer to lead the technical definition and delivery of our advanced security devices across multiple projects. You will work with electronics, FPGA, software and mechanical engineers from concept to deployment. This high-visibility role requires 7+ years in defence/space ...

Raytheon UK is seeking a Principal Platform Engineer to deploy applications across cloud and on‐prem environments. The role requires hybrid working with a minimum of three days on site and eligibility for SC and eDV clearance. You will lead building and configuring development tools, manage infrastructure ...

About WeBuild-AI: WeBuild-AI are AI natives delivering 10x value for enterprise organisations. We combine highly skilled experts with our AI Launchpad , industry-aligned language models, and agents to transform enterprise organisations into AI ...

will lead improvements in reliability, observability and automation while remaining closely involved in complex engineering, major incidents and service recovery. Role Summary As Principal Platform Engineer, you will own the day-to-day reliability, operability and continual improvement of the Centerprise platform estate. This is a senior, hands ...

Overview Leading technology company in the compute platform space is hiring a Senior/Principal Software Engineer to join the web platform team in Cambridge. This is a hybrid role, and you must live within commutable distance of Cambridge. The role focuses on owning pivotal design, architecture ...

lead this transformation , working at the absolute cutting edge of what's possible with today's most advanced AI technologies. Role Overview: As a Principal AI Engineer at WeBuild-AI, you will design, develop, and deploy innovative AI solutions that transform our clients' businesses. You'll leverage cutting ...

indicative purposes only. Applications from candidates with equivalent experience will be considered, provided that the candidate can demonstrate an ability to fulfill the principal duties of the role and possesses the required competencies.Qualcomm is an equal opportunity employer. If you are an individual with a disability and need ...

indicative purposes only. Applications from candidates with equivalent experience will be considered, provided that the candidate can demonstrate an ability to fulfill the principal duties of the role and possesses the required competencies. Qualcomm is an equal opportunity employer. If you are an individual with a disability and need ...

seeking a Senior Python/ML-focused backend engineer to own Rosso, tem's core pricing infrastructure. You will combine principal-level influence with hands-on production ML deployments, designing and delivering scalable Python systems in a serverless AWS environment. You will collaborate with data science ...

Beamery is seeking a hands-on Principal Platform Engineer to lead reliability and scale across the engineering org. You will design architectures, guide platform initiatives, and mentor engineers while ensuring services are scalable, observable, and cost-efficient. Experience with Kubernetes, IaC (Terraform), GitOps, and production-grade tooling ...

J.P. Morgan is seeking a Principal Software Engineer - Applied AI/ML Director to lead GenAI initiatives within the Accelerator Business. You will drive scalable AI solutions, mentor squads, and ensure governance and security across deployments. You will collaborate in tribes and squads, focusing on products that deliver ...

Hippo Digital Limited in Leeds is seeking a Principal Software Engineer to lead strategic technical direction across squads, shaping software architectures and delivery pipelines. You will partner with senior stakeholders to design innovative, scalable solutions and drive multi-team prioritisation to align with business priorities. You will ...

CreateFuture is seeking a Principal Data Engineer in Manchester to lead data engineering initiatives for iGaming clients. You'll be responsible for migration architectures, real-time data pipelines, and ensuring data integrity within regulatory contexts. The role requires extensive experience in data engineering, particularly with AWS tooling ...

CreateFuture is seeking a Principal Data Engineer in Manchester to lead data engineering initiatives for iGaming clients. You'll be responsible for migration architectures, real-time data pipelines, and ensuring data integrity within regulatory contexts. The role requires extensive experience in data engineering, particularly with AWS tooling ...

position based in Cardiff, requiring 3 days onsite each week, with the option for remote work on the remaining days. We are seeking a Principal Game Engineer to join our growing co‐dev team. WHAT YOU'LL DO Player Experience Development: Design, implement, and polish gameplay features … your own work. WHAT WE VALUE Expert Software Engineering: Extensive professional experience developing and shipping games, with the depth of judgement expected at a principal level and a history of delivering high‐quality, player‐facing systems. Strong C++ and C# Skills: Expert proficiency in C++ and C#, with ...

company is an award-winning leading provider of CV verification and background screening services using innovative technology and methodology. As a Principal Software Engineer, you will shape the future of our technology landscape, design scalable solutions, influence architectural decisions, and solve complex business challenges. You will lead ...

慨正橡扯 in the United Kingdom is seeking a Principal Software Engineer to join their team in Manchester or Gloucester. This full-time, permanent position offers a hybrid working pattern, focusing on both technical tasks and team leadership. The ideal candidate will have extensive experience in full-stack development ...

ev.energy is seeking a Principal Product Engineer to own the product vision across AI-first growth areas. You’ll lead small squads (2–3 engineers) from concept to MVP and ship demos to real customers fast, working with Commercial, Demand Generation, and the CEO to translate market signals ...

exciting opportunity to define how a global technology company assures quality in the age of AI. Fourth is seeking an exceptional, strategically minded Principal AI Quality Engineer to drive our AI-driven global QA strategy from the front. Reporting to the Global Head of Service Delivery within Technology … unification and continuous improvement of testing processes and practices across delivery teams, partnering directly with Software Engineering Managers and Product Managers. Act as the principal point of escalation for complex testing and quality challenges across global Engineering teams, marshalling subject matter expertise to resolve them. Champion modern testing technologies ...

Matchtech is seeking a Principal Data Engineer for the Secure Digital Platform (SDP) Data and Integration. The role is based in Reading with hybrid working arrangements and requires active SC clearance. Initial contract until February 2027 with strong extension potential on a long-term programme. You will design ...

Elsevier is seeking a Principal AI Engineer in the United Kingdom to lead technical execution for AI innovations within cross-functional teams. This role requires over 10 years of experience in software engineering and a strong grasp of AI systems, ensuring solutions are built to comply with architectural ...