Our client is a major defence and aerospace company.Date Posted:2026-08-06Country:United KingdomLocation:Gloucester, South GloucestershirePosition Role Type:Onsite...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 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 In this AI/ML-focused software engineering role, you will contribute to cutting-edge defence and aerospace software by applying AI/ML techniques to deployable solutions. You’ll collaborate with systems engineers on research proje...Read More>>.

Overview Founding engineer role in Pearson's Enterprise Innovation team, shaping early AI-driven innovation initiatives with internal and external partners. You lead design and delivery of advanced AI solutions, assess feasibility, and driv...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 As Principal Software Engineer, you will lead the design and delivery of governance-by-design platforms and libraries for secure, compliant identity solutions across the enterprise. You will drive AI-enabled, scalable patterns with...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 As a Principal Software Engineer in the M&S Software Engineering team, you will shape the modernization of mission-critical systems powering warehouse operations. You’ll influence technology and product strategy while collaborati...Read More>>.

Overview In this Principal Software Engineer role, you will lead high-impact engineering work for Accenture’s Software & Platform Engineering team in Manchester with ad hoc UK travel. You’ll steer client delivery, balancing hands-on tec...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>>.

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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 provide technical leadership for shared software components across Elekta’s product portfolio. You will guide architectural direction, ensure secure and scalable solutions, and advance engineering practices....Read More>>.

OverviewiO Associates is supporting a large public-sector organisation. They are looking for a Principal Software Engineer to help shape the future of digital services. You'll join a forward-thinking Head of Engineering who is transfor...Read More>>.

19 hours ago Be among the first 25 applicantsDirect message the job poster from Clearwater AnalyticsLead Recruiter at Clearwater Analytics - Hiring in UK, France, Germany, LuxembourgJob Summary:The Tr...Read More>>.

We are looking for a Principal Software Engineer to be the technical leader for this critical initiative within our Experience Engineering workstream. You will define the long‑term technical vision and architectural roadmap for adapting our p...Read More>>.

About WeBuild-AI: WeBuild-AI areAInatives delivering 10x value for enterprise organisations. We combine highly skilled experts with ourAI Launchpad, industry-aligned language models, and agents to tra...Read More>>.

About Us Huguenots generates highly personalised solutions for fund management clients of all sizes, from start‑up boutiques to global asset management firms, using our in‑house investment reporting platform. All clients are assure...Read More>>.

Join to apply for the Principal Software Engineer role at Companies House2 days ago Be among the first 25 applicantsJoin to apply for the Principal Software Engineer role at...Read More>>.

OverviewI'm working with a software company that's looking for a Principal Software Engineer to join their team. They have developed a product that utilises data analytics and machine learning to optimise inventory data,...Read More>>.

We're hiring for one of the UK's fastest growing fintech scaleups, where reliability is a competitive advantage not a luxury. As a Principal Software Engineer you will be providing deep technical leadership alongside being extremely hands on as...Read More>>.

Hybrid in London (2 days on-site, 3 days from home)Up to £130k base + Bonus +StockPrincipal Software Engineer – Would you like to be part of a brand-new engineering group focused on redefining how people move through next gener...Read More>>.

UK CITIZENSHIP REQUIRED FOR THIS POSITION: Yes RELOCATION ASSISTANCE: Relocation assistance may be available TRAVEL: Yes, 10% of the Time Define Possible at Northrop Grumman UK What’s your possible? At Nor...Read More>>.

Based in Oxford, you will join a highly experienced and growing Software Development team building innovative, cloud-based software that supports major decisions in the global energy transition. Our platform is built on AWS using a micro...Read More>>.

1 week ago τί Be among the first 25 applicants SR2 | Socially Responsible Recruitment | Certified B sortion™ provided pay range This range is provided by SR2 | Socially Responsible Recruitment | Certified B Corporation™. Y...Read More>>.

We are looking for a Principal Software Engineer (we call them Principal Software Craftspeople) who shares the same values of pragmatism, professionalism and transparency as us to join our team. You'd be utilising your expertise with clients, h...Read More>>.

Principal Engineer (Java) | London (Hybrid) | FinTechFinancial services experience is essential for this one.We're working with a B2B FinTech disrupting the SME lending market. Their SaaS platform is used by over 80 high street ba...Read More>>.

Principal Software Engineer Location: Heybridge The role of a Software Engineer is to be part of the Software Systems Capability function, where you will specify, design, validate and test software components, including low-leve...Read More>>.

Role DescriptionWe’re hiring a Principal Software Engineer to join our App Engineering team and help lead the technical direction of Vortex, our flagship desktop mod manager used by millions of PC gamers. You’ll be one of the most...Read More>>.

Principal Software Engineer – Join a growing SaaS scale-upRemote working – once a month onsite in ManchesterWere currently partnered with a fast-growing UK based SaaS scale-up who operate in the B2B marketing...Read More>>.

Principal Software EngineerSalary: £75,000 – £85,000 + BenefitsLocation: Hybrid 1 day every other week – Milton KeynesWe are currently looking for a Principal Software Engineer to join a growing, technology-led Sa...Read More>>.

London Full time 60000 Our Client is currently looking for an Full Stack Dev to join the team Gibson Jones is proudly recruiting on behalf of one of the most important companies within the science sector in Europe fo...Read More>>.

The Principal Software Engineer shapes and evolves our architecture using Distributed Domain Driven Design practices, ultimately ensuring the robustness and scalability of our systemsThey influence architectural directions, and th...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>>.

You’ll be a Technical Leader, unblock the engineering team by resolving complex technical impasses, standardising engineering practices, and owning cross-functional initiatives.You'll still be a highly hands-on engineer, responsible for r...Read More>>.

ZoomInfo is accelerating careers with a fast-paced, bold culture. We are seeking a Principal Software Engineer to own features across the full stack—from React frontends to backend APIs and cloud infrastructure—while shipping fixes for product...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>>.

RTX Raytheon UK is seeking a Principal Software Engineer to lead software development across multiple programmes. The role involves delivering secure, mission-critical systems on-site at Manchester, Gloucester, or London sites, in cross-functional...Read More>>.

Location: Waterloo, London, England, UK | Hybrid (1 day per week in office) Who We Are At 8th Light, we bring life to the best ideas. Founded in 2006 and headquartered in Chicago, we are a technology sol...Read More>>.

Job Title: Principle Engineer – Software Assurance Location: Coventry, hybrid – 3 days/week on site We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particu...Read More>>.

Job Title: Principle Engineer – Software Assurance Location: Coventry, hybrid – 3 days/week on site We offer a range of hybrid and flexible working arrangements – please speak to your recruiter about the options for this particu...Read More>>.

Job Purpose As part of the M&S Software Engineering team, you’ll be joining a well-loved historic brand, working on solutions that serves millions of loyal customers and thousands of colleagues! With ethical values that run right throug...Read More>>.

McNally Recruitment Ltd partners with a large UK client to hire a Principal Engineer for London or Edinburgh. You will design and engineer software with a focus on customer outcomes, contribute to architecture and the centre of excellence, and col...Read More>>.

Marks & Spencer is seeking a passionate Principal Software Engineer to join the Customer Platform team, driving modernisation of mission-critical systems as we scale. You will collaborate with cross-functional teams to design, build, and maintain...Read More>>.

Cirrus Selection Limited in Bristol is seeking a Principal Software Engineer with expert RTI DDS and distributed systems experience to shape the architecture, design and evolution of mission-critical software used in advanced defence systems. This...Read More>>.

Out of the successful launch of Chase in 2021, we’re a new team, with a new mission. We’re creating products that solve real world problems and put customers at the center - all in an environment that nurtures skills and helps you realize your...Read More>>.

Instil is seeking experienced Principal Software Engineers to solve complex problems and guide delivery of scalable systems. You’ll design and build software using Java, Python, C#/.NET and TypeScript, and mentor engineers across teams.Ro...Read More>>.

Rolls-Royce is seeking a Principal Software Engineer in Heybridge to deliver on-time software components within the Software Systems Capability function. You will decompose designs, develop tests, and ensure the software meets allocated requiremen...Read More>>.