Our client is a major defence and aerospace company.Date Posted:2026-08-06Country:United KingdomLocation:Gloucester, South GloucestershirePosition Role Type:Onsite...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>>.

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 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>>.

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>>.

£80,000 - £100,000 + bonus and sharesThe OpportunityWe are VERY excited about this opportunity. We’ve been working with this client for years and every candidate we have ever placed with them have loved it there. Contractors...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>>.

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>>.

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>>.

At Anaplan, we are a team of innovators focused on optimizing business decision-making through our leading AI‑infused scenario planning and analysis platform so our customers can outpace their competition and the market. What unites An...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>>.

This is an opportunity for a Principal Software Engineer to join an award winning Fintech as their continue their next phase of growth. They create industry changing solutions, operate in close to 50 global markets and are known as a market lea...Read More>>.

Senior Principal Software Engineer (BH-4467) Location Tewkesbury, England Sector Aerospace Salary £aexcellent Arden White Aerospace and Aviation Recruitment are currently working with a leading global engineering organisatio...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>>.

Principal Software Engineer / Principal AI EngineerAre you excited about building intelligent systems powered by innovative AI technologies? Do you enjoy designing models that turn complex data into impactful solutions?...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>>.

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>>.

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>>.

Meet the TeamCisco ThousandEyes is a Digital Experience Assurance platform that empowers organizations to deliver flawless digital experiences across every network - even the ones they don't own. Powered by AI and an unmatc...Read More>>.

Principal Software Engineer / Principal AI EngineerAre you excited about building intelligent systems powered by innovative AI technologies? Do you enjoy designing models that turn complex data into impactful solutions?About th...Read More>>.

Principal Software EngineerFull TimeLocation - HeybridgeAt Rolls-Royce we are proud to be a business that has truly helped to shape the modern world and are committed to always being a force for progres...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>>.

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>>.

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>>.

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 through...Read More>>.

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...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>>.

MHR International UK Limited is seeking a Principal Software Engineer to lead complex engineering challenges that shape our products and technical direction. You will operate across the organisation—defining strategy, influencing architecture, a...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>>.

Arden White Aerospace and Aviation Recruitment are currently working with a leading global engineering organisation, recruiting for a Senior Principal Software Engineer to join their growing engineering team. This is an exciting opportun...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>>.

Ready to take a big step in software engineering? As a Principal Software Engineer, youll lead from the front in embedded and application software, help shape the technical direction, and mentor a talented team working on cutting:edge cyber and...Read More>>.

Location: Luton (Hybrid: 4 days on-site, 1 day remote) Contract: 12 months IR35: Inside IR35 Security Clearance: Full UK SC required upon application Day Rate: Competitive (please enqu...Read More>>.

Fred. Olsen Ltd.is seeking a Principal Software Engineer to provide technical leadership across our software engineering function, with a focus on renewables, energy control centre solutions and business applications. You will lead architec...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>>.

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>>.