Principal Engineer Advanced Manufacturing & DefenceUp to £70,000Location: Dorking, SurreyEngineering expertise meets customer engagement, inno...Read More>>.

About Nscale Nscale is the GPU cloud engineered for AI. We provide cost‑effective, high‑performance infrastructure for AI start‑ups and large enterprise customers. Nscale enables AI‑focused companies to achieve superior results...Read More>>.

Job Description SummaryAs a Principal Engineer, you will report to the HVDC Valve Engineering Global Leader within the Product Delivery Group (PDG) of Grid Systems Integration (GSI) in GE Vernova. The purpose of this senior-level engin...Read More>>.

About UnifeyeUnifeye is a delivery-led, Databricks-first consultancy helping organisations unlock the full value of their data and AI.We're a lean, high-growth team based in London, working at the intersection of data, technolog...Read More>>.

Primary Location: UK - Birmingham - Colmore PlazaCompany DescriptionWork with Us. Change the World.At AECOM, we're delivering a better world. Whether improving your commute, keeping the lights on, provid...Read More>>.

This position allows you to join a fast-growing technology organisation focused on the critical migration and architectural evolution of our .NET services from AWS to Azure. If you are passionate about cloud-native transformation and want to le...Read More>>.

Highways and Transportation Senior / Principal Engineer Metis is looking to fill a Highways and Transportation Senior/Principal Engineer role to provide leadership and technical support for our growing Highways and Transportation pipe...Read More>>.

Base Location:For this role, we require successful applicants to be basedfromone of our Scottish locations – Perth, Glasgow,Aberdeenor Inverness and you'll be expected to spend 50% of your working week in the officeSalary:...Read More>>.

Around the world, SYSTRA’s specialists plan, design, integrate, test, commission, project manage and deliver mass transit and mobility solutions that are relied on by more than 50 million people every day.For more than 60 years, t...Read More>>.

About SkyscannerEveryone loves travelling, but planning is not without its challenges. That's why we've spent 20 years building tools that turn travel-planning chaos into a breeze. Today, around 160 million travellers count on us...Read More>>.

Elastic, the Search AI Company, is seeking a Principal Software Engineer to join the Elasticsearch - Search Infra team. You will define, lead, and contribute to core search and indexing capabilities in a globally distributed environment.You...Read More>>.

Raytheon UK is seeking a Principal Software Engineer in London for a permanent, onsite position. You will join a cross-functional software dev team delivering critical software for defence and aerospace projects.Candidates must hold an acti...Read More>>.

Were currently recruiting 5 Principal Engineers Support Engineering (Training Services) to support a Submarine Programme. This is a predominantly remote/hybrid position, with occasional travel to site as required by the programme....Read More>>.

Assystem is seeking a Technical Lead to drive the successful technical delivery of defence projects. Reporting to the Technical Director, you will lead multidisciplinary engineering teams, ensuring technical excellence and strong client relationsh...Read More>>.

Elastic, the company behind Elasticsearch, is seeking a Principal Software Engineer for the Elasticsearch - Search Infra team. You will define, direct, and build the next generation of Elasticsearch capabilities, focusing on indexing, retrieval, a...Read More>>.

We’re looking for a Principal Software Engineer to join the Elasticsearch - Search Infra team This globally-distributed team of experienced engineers focuses on delivering a robust and feature-rich search experience, including con...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 potential of AI/ML to impr...Read More>>.

About usEncord is the universal data layer for AI that helps 300+ AI teams train and run models on the right data. Our platform indexes, curates, annotates, and evaluates data across the full AI lifecycle, from development through production. Trus...Read More>>.

Principal Engineer Department: R&D Employment Type: Full Time Location: Plymouth Description The New Technologies Group identifies, evaluates and develops the emerging technologies that w...Read More>>.

We Are Zenith is partnering with an innovative engineering organisation operating within the offshore wind and renewable energy sector to recruit a Principal Engineer - MV/HV Cable Design.This is a senior technical leadership role focused o...Read More>>.

Help us to make a world of difference Urenco is a global leader in the production of low carbon energy. We work at the cutting edge of the transition to a sustainable, net zero world. We are looking for a Principal Engineer - Cont...Read More>>.

Granite Recruitment Ltd in Scotland is seeking a Principal Civil Engineer to strengthen its water team across Scotland and the UK. This permanent role focuses on delivering a diverse portfolio of water infrastructure projects, leading technical de...Read More>>.

Elastic, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. The Elastic Search AI Platform, used by more than 50% of the Fortune...Read More>>.

10x Team is seeking a Freelance Principal Software Engineer – AI Trainer to remotely contribute 8–20 hours per week. You will review AI-generated outputs and refine recommendations for software architecture and coding standards.The role...Read More>>.

Specsavers is seeking a Principal Engineer to lead technical direction while staying hands-on, solving complex problems, and delivering production code across frontend and backend services. In this role you will shape architecture and review desig...Read More>>.

Role MissionTo support customer outcomes by making deep, hands-on Microsoft centric expertise available to customers and internal teams across hybrid identity, security and endpoint management. This includes Windows Active Directory and i...Read More>>.

Role Description We are seeking a Principal Civil / Structural Engineer to join our growing rail design teams in London and Bristol. You will lead the delivery of complex rail infrastructure projects, including bridge replacement, station...Read More>>.

Principal Engineering Platform AI ArchitectJob Overview:The Principal Eng Plat AI Architect sets direction for how AI is embedded across Arm's engineering platforms, toolchains and workflows. Reporting to the Director of Engineering...Read More>>.

Pension Insurance Corporation plc is seeking a Principal Software Engineer to provide technical leadership and hands-on software delivery across our technology function. You will design, develop, test, review, and deploy production software, while...Read More>>.

Requisition ID12683-Posted07/10/2026-Consulting-Birmingham - International Design Hub, Colmore Plaza Amey are a leading provider of full life-cycle engineering, operations and decarbonisation solutions, for trans...Read More>>.

Principal Engineer Full Time | £74,781.00 to £87,244.00 dependant on experience| OSHQ Southampton | Hybrid workingWho we areWe are Ordnance Survey, Great Britain’s national mapping service and a global leader in geospatial data...Read More>>.

About Scrumconnect ConsultingScrumconnect Consulting is a multi-award-winning digital consultancy, recognised for delivering impactful and innovative technology solutions across UK government departments. Our work has positively influence...Read More>>.

We are recruiting an Infrastructure Director / Principal Engineer for a highly regarded, specialist M&E and building services organisation. This is a senior technical leadership position with overall responsibility for the strateg...Read More>>.

Candour Solutions in Manchester is seeking a Principal Engineer who will own the platform architecture and delivery while remaining hands-on. You will shape technical direction, mentor engineers, and collaborate closely with the CTO to set enginee...Read More>>.

Role: Principal EngineerSalary: £80,000-£95,000Location: Manchester This is a highly hands-on technical role, ideal for a strong Senior Engineer, Principal Engineer or existing Tech Lead who wants to stay cl...Read More>>.

Candour is seeking a Principal Engineer in Manchester to own architecture and lead delivery while staying hands-on with code. You will shape the platform, drive technical direction, and collaborate with the CTO to raise engineering standards. The...Read More>>.

Role: Principal Engineer Salary: £80,000–£95,000 Location: Manchester This is a highly hands-on technical role, ideal for a strong Senior Engineer, Principal Engineer or existing Tech Lead who wants to...Read More>>.

At Amentum, we're not just solving problems; we're engineering the future. Our team is driven by an unyielding commitment to innovation, integrity, and collaboration, tackling some of the most significant challenges in science, security, and susta...Read More>>.

CreateFuture, a UK digital consultancy with offices in Leeds, is seeking a Principal Engineer to lead high-impact engineering programmes and shape scalable AI-enabled platforms.You will own system architecture, oversee delivery across teams...Read More>>.

Around the world, SYSTRA's specialists plan, design, integrate, test, commission, project manage and deliver mass transit and mobility solutions that are relied on by more than 50 million people every day.For more than 60 years, the Group has b...Read More>>.

Job Description Summary Tätigkeiten, die darauf abzielen, durch Anwendung wissenschaftlicher und technischer Methoden zu beweisen, dass ein Konzept gültig oder technisch machbar ist. Die Arbeit in dieser Familie hat in der Reg...Read More>>.

Lead the design and engineering of a cloud-agnostic Identity and Authorization Platform that secures users, services, APIs, AI agents, and data across a multi-tenant SaaS platform. Unlike traditional IAM roles, this position focuses heavily...Read More>>.

Technify Talent in Newbury is seeking a Principal Engineer to act as technical authority for complex, real-time distributed systems. This hands-on, IC role requires staying close to code and untangling hard problems with the team.You'll own...Read More>>.

Tharsus is seeking an accomplished Principal Engineer to define and champion engineering practices across product development, ensuring teams deliver brilliant, commercially successful products.You’ll act as a trusted technical authority,...Read More>>.

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital...Read More>>.

Who are We? Grip is the AI-powered, end-to-end event platform built for engagement. The flexible system helps commercial event organizers like Ascential, Hyve, Emerald and Clarion Events boost revenue by establishing, maintaining and trac...Read More>>.

Neulinx, partnering with a growing AI-powered SaaS company, is hiring a Principal Engineer who will own architecture and drive engineering decisions across software, cloud, and DevOps. This senior IC role emphasizes hands-on leadership without peo...Read More>>.

Senior Principal EngineerLocation: Dublin, IrelandJob Type: PermanentSector: Roads, Transportation & InfrastructureThe Opportunit...Read More>>.