Role: Principal Engineer Salary: £80,000–£95,000Location: ManchesterThis is a highly hands-on technical role, ideal for a strong Senior Engineer, Principal Engineer or existing Te...Read More>>.

About UsTÜV Rheinland Solutions Rail Division, Derby forms part of TÜV Rheinland's wider technical and engineering capability serving the rail industry. Located in Derby, one of the UK's principal railway centres, the division...Read More>>.

Principal Engineer - Product SafetyBarrow based (Mainly remote 2-3 days per month on site) £74.68 per hour Umbrella inside IR35 12 Month Contract Currently recruiting for a Principal Engineer - Product Safety to work wi...Read More>>.

We're looking for a Principal Engineer to join our Kier Design team based in various locations. Kier Design are a highly regarded Tier 1 Contractor, with a 750 plus strong design consultancy team, recognised as a Top 30 employer on Glass...Read More>>.

Overview As a Principal Software Engineer you will provide technical leadership across the technology function, shaping architectures and engineering standards for scalable, secure enterprise applications. You’ll mentor engineers, partner...Read More>>.

Overview As a senior engineering leader at Very, you shape how we build scalable, customer‑facing software and cloud platforms. You’ll influence multiple squads, champion engineering standards, and drive architectural decisions with pro...Read More>>.

Overview In this role, you accelerate secure, high-quality software delivery across Leonardo’s defence and security programmes. You will help shape and evolve the enterprise DevSecOps capability to enable teams to deliver features rapidly...Read More>>.

Overview In this role you will lead software development for advanced flight control and actuation systems, shaping architecture and ensuring safety-critical compliance. You will mentor teams and collaborate with hardware and test engineers...Read More>>.

Overview As Principal Engineer, you will lead the strategy and delivery of mission-critical AI platforms within Moody's Digital Content and Innovation team. You will shepherd multi-team efforts from prototype to production, shaping scalable...Read More>>.

Overview As a Principal Software Engineer, you will lead the design and delivery of embedded software for safety-critical systems in aerospace. You will shape architectures, drive integration and verification, and mentor engineers to ensure...Read More>>.

Overview As Principal AI Engineer you lead the embedded Innovation Squad, driving AI architecture and delivery from discovery to production. You will harden prototypes, design reusable agentic AI patterns, and guide integration with enterpr...Read More>>.

Overview In this role you will be the principal technical authority for a major global product area, guiding architecture and innovation for large-scale, distributed solutions. You will influence multiple teams and collaborate with architec...Read More>>.

Job Title Senior Principal Software Engineer Reporting To Director, Eng. Sys. Def. & Integ. Work Schedule Hybrid – Tewkesbury, GBR About Moog Aircraft Group Moog Aircraft Group is a wor...Read More>>.

Senior Principal Software Engineer Location: Leatherhead, UK Do you love solving complex technical challenges and inspiring others to deliver impactful solutions? This is a great job for someone who thrives in a dynamic e...Read More>>.

Bring more to life. At IDBS, one of Danaher’s 15+ operating companies, our work saves lives—and we’re all united by a shared commitment to innovate for tangible impact. IDBS helps BioPharma organizations unlock the po...Read More>>.

About Fastmarkets Fastmarkets is an industry‑leading price‑reporting agency (PRA) and information provider for global commodities, offering price data, news, analytics and events for agriculture, forest products, metals and mining,...Read More>>.

Principal Software Engineer (AI) Department: Tech - AI and Data Engineering Employment Type: Permanent - Full Time Location: Oxford, UK Description Please note that we are open to c...Read More>>.

At lowRISC we believe that open source development can transform the semiconductor industry. To help achieve this vision of production‑ready, commercial‑grade chips and silicon building blocks, we employ a software team with a wide range of...Read More>>.

Principal Software Engineer (DevSecOps) - Salary Range: £54,000 - £70,000Your ImpactAs a Principal Software Engineer (DevSecOps), you will play a key role in accelerating the delivery of secure, high-quality software ac...Read More>>.

Salary: £100,000 - 100,000 per yearRequirements:We require applicants to hold active or recently active SC or DV clearance.We are looking for strong experience delivering production systems in complex envir...Read More>>.

Your Impact As a Principal Software Engineer (DevSecOps), you will play a key role in accelerating the delivery of secure, high-quality software across Leonardo's defence and security programmes. You will help shape and evolve our ente...Read More>>.

Role Purpose We are seeking a highly experienced Principal Software Engineer to provide technical leadership across our technology function, driving the design, delivery, and continuous improvement of enterprise applications and digita...Read More>>.

Moog is a performance culture that empowers people to achieve great things. Our people enjoy solving interesting technical challenges in a culture where everyone trusts each other to do the right thing. For you, working with us can mean deeper...Read More>>.

Prattwhitney is seeking a Principal Software Engineer for a full-time position in Manchester with a hybrid working model. You will design and develop software solutions while mentoring junior team members within our cross-functional team.Th...Read More>>.

nineDots.io is seeking a backend engineer to build provenance and attestation infrastructure at the heart of modern software delivery. You will design systems that provide end-to-end traceability from source to deployed artifact, including how art...Read More>>.

Senior/Principal Software EngineerApplication Deadline: 30 October 2026Department: Software EngineeringEmployment Type: PermanentLocation: Cheltenham (Hybrid)Compensation:...Read More>>.

We’re building the UK's next generation engineering powerhouse, providing critical technology that strengthens national security and resilience. We specialise in turning advances in sensing, AI, and communications into operational capabil...Read More>>.

ZoomInfo is where careers accelerate. We move fast, think boldly, and empower you to do the best work of your life. You’ll be surrounded by teammates who care deeply, challenge each other, and celebrate wins. With tools that amplify your impact...Read More>>.

Selection changes the language of the page/contentPrincipal Software Engineer - Software ArchitectureLondon, England, United Kingdom Software and ServicesImagine what you could do here. At Apple, new ideas have a way of beco...Read More>>.

As we continue to accelerate the transformation of our technology and services, we are placing security and compliance at the heart of our engineering and platforms. This is an opportunity to lead at the intersection of infrastructure engineering,...Read More>>.

Job DetailsRole: Principal Software Engineer Locations: Manchester (must be willing to travel to client sites throughout the UK on an ad hoc basis) Level: Manager Salary: Competitive salary and package (Depending on level of experience) A...Read More>>.

Roche Holding AG in the UK is seeking a Software Engineer (Principal / Senior Principal) to design and evolve modern computational and data ecosystems that accelerate drug discovery. You will build scalable, cloud-native platforms and interactive...Read More>>.

Roche is seeking a Software Engineer (Principal / Senior Principal) to lead the design and development of modern computational and data ecosystems enabling drug discovery. You will work across interactive tooling, scalable data platforms, and AI-p...Read More>>.

Pathfinder in London is seeking a Principal Software Engineer to lead the design and delivery of complex digital services. You will write production code, guide a small engineering team, and shape architectural decisions in collaboration with prod...Read More>>.

Corpay One, Inc. is seeking a Principal Software Engineer in London to lead technically across the Client Lifecycle domain. You will drive design, architecture, and delivery of secure, scalable systems, while remaining hands-on and mentoring engin...Read More>>.

ABOUT US:LSEG (London Stock Exchange Group) is more than a diversified global financial markets infrastructure and data business. We are dedicated, open-access partners with a dedication to excellence in delivering the services our custom...Read More>>.

Are you a Principal Engineer who loves being hands-on, solving complex technical problems, and building products that customers use every day? At Specsavers, we're building something truly exciting. Our IDOC business operates with the pace,...Read More>>.

About The Role Help power the future of energy. At National Grid Ventures, we're connecting countries, enabling the energy transition and helping create a cleaner, more secure energy future. Viking Link is the world's longest land and sub...Read More>>.

We're looking for a Principal Engineer (Mechanical) to join our Mechanical Assurance, Governance and Framework Support team based in Kier Water Division, national remit. Location: Kier Water Division, national...Read More>>.

Company DescriptionWork with Us. Change the World.At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, providing access to clean water, or transforming skylines, o...Read More>>.