Title: Principal Software EngineerRole: Distributed Systems & CommunicationsLocation: CambridgeshireSalary: £60-£80kPlatform Recruitment has par...Read More>>.

PRINCIPAL SOFTWARE ENGINEER – V06450Role Description Provide technical expertise across the software team for the requirements, design, implementation, testing and verification of the software subsystems on Na...Read More>>.

Principal Software Engineer (Contract) - Naval RadarBAE Systems (Defence Solutions) | Cowes, Isle of Wight | 6 months | Inside IR35BAE Systems (Defence Solutions) i...Read More>>.

Job DescriptionJob Title: Principle Engineer – Software Assurance\nLocation: Coventry, hybrid – 3 days/week on site\nWe offer a range of hybrid and flexible working arrangements – please speak to your recruiter abou...Read More>>.

Overview In this leadership role, you blend hands-on coding with strategic software leadership to guide a product squad and set high‑level architecture. You will drive best practices, manage technical debt, and align delivery with other P...Read More>>.

Overview As a Principal Software Engineer in Public Markets Technology, you will help build an AI-enabled investment platform by delivering scalable Python solutions on a cloud-first stack. You’ll collaborate with portfolio managers, data...Read More>>.

Overview In this role you will help evolve ThousandEyes’ technologies within Cisco’s broader portfolio, shipping new features that improve digital experience across networks. You will collaborate with product and engineering leaders to...Read More>>.

Overview In this role, you will shape the next generation of software features for defence systems. You join a world-class team focused on delivering market-leading solutions in Integrated Sensors & Protection, driving innovation across com...Read More>>.

Overview As Principal Software Engineer at M&S, you will provide senior technical leadership across the International Fashion, Home & Beauty domain. You’ll shape mission-critical platforms to enable international growth and digital-first...Read More>>.

Overview As a Principal Software Engineer in M&S’s Software Engineering team, you drive technical excellence across the full lifecycle to modernise mission-critical systems powering warehouse operations. You will shape the technical direc...Read More>>.

Principal Software Engineer – Agentic EngineeringUsing AI and agentic engineering to modernise complex legacy software, and fundamentally change how engineering teams build software.This isn't a traditional software eng...Read More>>.

At Fred. Olsen Ltd., we empower people to make a difference. Whether shaping renewable energy’s future or delivering industry-leading logistics, our team thrives on innovation and collaboration.Established in 1963, Fred. Olsen Ltd focus...Read More>>.

Inside IR35Hybrid - LondonRole Overview:We are seeking an exceptional Senior / Principal Java Developer with extensive front-to-back trading systems expertise to join our delivery team on a high-profile eng...Read More>>.

Join to apply for the Principal Software Engineer role at Lloyds Banking Group. Base pay range This range is provided by Lloyds Banking Group. Your actual pay will be based on your skills and experience — talk with...Read More>>.

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

Principal Software Engineer - Simple MachinesHybrid · Full-time · London, UKAbout Simple MachinesSimple Machines is a leading independent boutique technology firm with a global footprint across London, Poland, Sydn...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>>.

Our client, a leading UK insurance and technology organisation, is seeking a Principal Software Engineer to provide technical leadership across complex enterprise platforms and customer-facing solutions. This permanent role offers a hybrid working...Read More>>.

Principal Software Engineer Date: 2026-09-26T00:00:00 Location: Kingswood, Surrey, GB, KT20 6 Work Type: Any Closing Date: 2026-12-28T19:01:34.117 Job Description Raytheon U...Read More>>.

Salary: £100,000 - 100,000 per yearRequirementsWe require at least 5 years of experience delivering production-grade cloud solutions.We are looking for strong proficiency in Java and experience with JVM-based...Read More>>.

At MHR, our employees are central to our success and play a key role in helping customers achieve sustainable high performance. With a team of over 900 professionals, we work to make things flow smoothly, whether it's for large organisations or in...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>>.

Principal Software Engineer - Simple MachinesHybrid · Full-time · London, UKAbout Simple MachinesSimple Machines is a leading independent boutique technology firm with a global footprint across London, Poland, Sydney...Read More>>.

Reading - Hybrid (ideally 2/3 days per week)Albany Growth are partnered with an established software business going through a major multi-year technology transformation, rebuilding and modernising a large legacy product estate onto a new...Read More>>.

Job Description Principal Software Engineer Full Time Location - Heybridge At 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 f...Read More>>.

We are The Citation Group - a collective of businesses dedicated to supporting small and medium-sized enterprises across a range of essential services. We know that running a business means juggling a lot. Our mission is to ease these pressures by...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>>.

Principal Software Engineer Based in Bristol Salary up to 70,000 + Bonus + Excellent Benefits Want to work on complex software that sits at the heart of advanced defence systems? We're looking for an experienced Softw...Read More>>.

The Role We’re looking for experienced Principal Software Engineers who enjoy solving complex technical challenges, building scalable systems, and helping engineering teams deliver high-quality software in production environme...Read More>>.

Salary: £95,000 - 95,000 per yearRequirements:We require candidates to be willing and eligible to hold SC and eDV clearance.We are looking for experience in core software engineering.Experienc...Read More>>.

Job Description: Job DescriptionAre you a Real Time Embedded Software Engineer ready to take the next step on your career journey. If you are looking at opportunities for progression, to learn and grow within a supportive enviro...Read More>>.

Salary: £61,000 - 101,000 per yearRequirements:Formal training or certification on software engineering concepts, with advanced applied experienceHands-on practical experience delivering system design, applica...Read More>>.

Salary: £61,000 - 101,000 per year Requirements: 12 years of software engineering experience, including 5 years leading engineering teams and delivering complex, large-scale, multi-team initiatives with measurable bus...Read More>>.

Salary: £45,000 - 80,000 per yearRequirements: Strong software engineering experience in graphics, game engines, systems software, or other real-time applications.Practical experience with Vulkan or another mo...Read More>>.

Roche in the United Kingdom is seeking a Principal/Senior Principal Software Engineer within the Computational Sciences Center of Excellence. You will design and build scalable, data-centric platforms that accelerate drug discovery, collaborating...Read More>>.

Vix Technology is seeking a talented Principal Software Engineer to join our global team. You will own the design and delivery of mission-critical software for public transit, collaborating with platform specialists to build robust, scalable appli...Read More>>.

SummaryImagine what you could do here. At Apple, new ideas have a way of becoming extraordinary products, services, and customer experiences very quickly. You bring passion and dedication to your job and there's no telling what you c...Read More>>.

Principal Software Engineer, Load Balancer - Isovalent Remote Europe Isovalent, now part of Cisco, is the company founded by the creators of Cilium and eBPF. Cisco Isovalent builds open-source software and enterprise solutions so...Read More>>.

Make The Connection.Vix Technology is a global leader in providing innovative solutions for public transit, believing that accessibility should be a standard. With over 35 years of experience and systems deployed in more than 200 citie...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>>.

Principal Software EngineerFinancial services | London | Hybrid, 6 days onsite per monthPackage: £75-£95k + 10% pension + 10% cash allowance + bonus + benefits pack.We’re recruiting a Principal Software Engineer for a fi...Read More>>.

At Roche you can show up as yourself, embraced for the unique qualities you bring. Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to th...Read More>>.

Elekta is a global leader in precision radiation medicine, building software to enable advanced radiotherapy and radiosurgery. As a Principal Software Engineer, you will provide technical leadership for shared software components used across Elekt...Read More>>.

At Roche you can show up as yourself, embraced for the unique qualities you bring. Our culture encourages personal expression, open dialogue, and genuine connections, where you are valued, accepted and respected for who you are, allowing you to th...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>>.

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 Products Ltd. is seeking a Software Engineer (Principal / Senior Principal) to help design and build modernized data and computational ecosystems for drug discovery.You will lead interactive tooling, scalable data platforms and AI-ena...Read More>>.

About the role We're working with a leading foundational AI lab to find experienced software engineers who can help train their latest language model on software development tasks. We're looking for Senior Software Engineers with 5+ years...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>>.

Your new company Join one of the world's leading engineering and design consultancies, delivering innovative transportation and infrastructure projects across Ireland and internationally. Due to continued growth within thei...Read More>>.