Principal Engineer - Software Engineering (Specialist Software)Frimley based role (Hybrid working)£67.47 per hour Umbrella Inside IR3512 Month Contract initially. This is a great opportunity to work...Read More>>.

Job DescriptionSafran is an international high-technology group operating in the fields of aerospace (propulsion, equipment and interiors), space and defense. Its mission is to contribute sustainably to a safer world, where air transpo...Read More>>.

Job DescriptionAbout Us\n\nTÜV 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...Read More>>.

Energy Trading - Principal Software Engineer London About Indicium AI Indicium AI is trusted by the world's leading enterprises to deliver AI into production at scale. We are a global AI-native consultancy with pro...Read More>>.

Principal Software Development Engineer Design and optimize marine navigation software for embedded hardware systems Location: Fareham, Hampshire, United Kingdom. Job Tags: Software. Job Summary The Prin...Read More>>.

A leading software development firm in Central London is looking for a Principal Software Engineer to own the technical roadmap and manage solutions architecture. The ideal candidate will have over 7 years of experience, particularly in full stack de...Read More>>.

A transformative Medical Device company in the UK is seeking a Principal Software Engineer. You will lead software testing and quality assurance activities, create effective testing strategies, and manage cybersecurity efforts. The ideal candidate ha...Read More>>.

慨正橡扯 in the United Kingdom is seeking a Principal Software Engineer to join their team in Manchester or Gloucester. This full-time, permanent position offers a hybrid working pattern, focusing on both technical tasks and team leadership....Read More>>.

Raytheon UK have a full time, permanent opportunity for a Principal Software Engineer to join our team on our Manchester or Gloucester sites within a hybrid working pattern. As Principal Software Engineer, you have the opportunity...Read More>>.

Sepura Limited is seeking a Principal Software Engineer to lead the architecture and performance of critical public safety systems. You will mentor teams, drive best practices, and shape the development lifecycle across C#/.NET platforms.Th...Read More>>.

Job Description 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...Read More>>.

Lovable lets anyone and everyone build software with any language. From solopreneurs to Fortune 100 teams, millions of people use Lovable to transform raw ideas into real products - fast.We are at the forefront of a foundational shift in so...Read More>>.

Raytheon UK is recruiting a Principal Software Engineer to join our onsite teams in Manchester and Gloucester. You will contribute to secure, mission-critical software across defence programmes, working in a cross-functional team with DevSecOps at...Read More>>.

Harrington Starr in London is seeking a Principal Software Engineer to help shape the technical direction of a leading fintech. You will influence architecture, drive product roadmaps, and work with cross-functional teams in a hybrid London enviro...Read More>>.

RTX Corporation in the United Kingdom is seeking a Principal Software Engineer to join our specialist teams based across Manchester, Gloucester, and London. You will deliver secure, mission-critical software across diverse programmes, collaboratin...Read More>>.

Gemba Advantage is hiring Senior and Principal Engineers to shape secure, scalable software for critical public sector systems across the UK. You will influence technical direction, mentor teams, and work with customers to solve complex problems,...Read More>>.

Accenture Manchester is seeking a Principal Software Engineer with strong leadership to drive backend services and cloud-native solutions across UK client projects. The role requires hands-on engineering as well as client and team leadership, with...Read More>>.

Indicium AI is seeking an exceptional Principal Software Engineer to lead delivery in the Energy & Commodities Trading sector. This hands-on role combines engineering excellence with strategic leadership, mentoring teams and shaping client relatio...Read More>>.

Accenture Manchester is seeking a Principal Software Engineer to lead engineering workstreams across client projects, shaping delivery with a strong emphasis on quality and tangible outcomes.You will grow teams, mentor engineers, and collab...Read More>>.

Date Posted: 2026-03-17 Country: United Kingdom Location: Manchester, Lancashire Position Role Type: OnsiteRaytheon UK have a full time, permanent opportunity for a Principal Software Engineer to join our team on our Manchester or Glouce...Read More>>.

Why Technology at loveholidays? At loveholidays - we trailblaze together. We’re on a mission to open the world to everyone, giving our customers’ unlimited choice, unmatched ease and unmissable value for their next getaway....Read More>>.

Contract Software Engineer (C# .NET) Location: Luton (Hybrid: 4 days on-site, 1 day remote) Contract: 12 months IR35: Inside IR35 Security Clearence: Full UK SC required Rate:...Read More>>.

We are excited you have visited our Careers page. We are seeking talented individuals that are excellent in their field of expertise and are posed with all potential and skills necessary to help us meet future business challenges. Positi...Read More>>.

Meet the Team Cisco 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 unmatched set o...Read More>>.

We are looking for principal software engineers with diverse experience. We are a small but rapidly growing consultancy, owned highly experienced and recognised practitioners in UK defence consultancy. We are looking for candidates with...Read More>>.

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

Are you a current Elekta employee? Please click here to apply through our internal career site Find Jobs - Elekta. We don’t just build technology. We build hope for everyone dealing with Cancer. Elekta is shaping the standard of care, togethe...Read More>>.

Role: 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 ex...Read More>>.

Principal Software Engineer ABOUT THE ROLE We’re looking for a Principal Software Engineer to shape the technical direction of high-profile projects and lead the delivery of modern, scalable software. We u...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 engineeri...Read More>>.

Raytheon UK is hiring a Principal Software Engineer in London. You will join a cross‑functional team delivering critical software for national security, using React/NextJS, TypeScript, Python, and Java across cloud environments.Role requi...Read More>>.

Cytix is hiring a hands-on Technical Leader who will unblock the engineering team by resolving technical impasses, standardising practices, and owning cross-functional initiatives. You’ll prototype rapidly, ship MVPs, and turn ideas into polishe...Read More>>.

Are you passionate about leading technical excellence while remaining hands-on in building high-quality software? Do you enjoy influencing teams, shaping engineering practices, and delivering reliable, secure, and observable solutions in a coll...Read More>>.

Principal Software Engineer, £650/day (Outside IR35)Opportunity for a Principal Software Engineerto work for a retail company at thebeginning of a large digital transformation on an initial 6-month contract outside IR35.You’d re...Read More>>.

Overview As a Principal Software Engineer, drive the architecture and technical direction for a global, high-scale API platform. You will partner with cross-functional squads to solve complex distributed systems challenges in a cloud...Read More>>.