london, south east england, united kingdom Hybrid / WFH Options
Ozone Talent
PrincipalEngineer London Hybrid £100,000-£170,000 + bonus + benefits We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for PrincipalEngineer … their high performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment. Responsibilities as a PrincipalEngineer: Contribute to the businesses technology strategy and architecture Contribute to the backend Kotlin infrastructure Ship resilient and well tested production code Collaborate with different teams to deliver … and bonus Hybrid office/remote-working practices Private Health Insurance Pension Scheme Life Assurance Scheme with death in service benefit of 4x salary This is a career defining PrincipalEngineer position with the potential to have a massive impact on the technology strategy of a business that is directly shaping the future of intelligent digital infrastructure. **Unfortunately More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Ozone Talent
PrincipalEngineer London Hybrid £100,000-£170,000 + bonus + benefits We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for PrincipalEngineer … their high performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment. Responsibilities as a PrincipalEngineer: Contribute to the businesses technology strategy and architecture Contribute to the backend Kotlin infrastructure Ship resilient and well tested production code Collaborate with different teams to deliver … and bonus Hybrid office/remote-working practices Private Health Insurance Pension Scheme Life Assurance Scheme with death in service benefit of 4x salary This is a career defining PrincipalEngineer position with the potential to have a massive impact on the technology strategy of a business that is directly shaping the future of intelligent digital infrastructure. **Unfortunately More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Ozone Talent
PrincipalEngineer London Hybrid £100,000-£170,000 + bonus + benefits We’re working with a rapidly growing tech for good company that is transforming how data, automation, and smart integrations shape the future of digital infrastructure. Their platform optimises real-time operations, connecting users with seamless, intelligent technology solutions. We are looking for PrincipalEngineer … their high performance systems. This is an opportunity to work with modern backend architecture, collaborating with top-tier engineers in a fast-moving, product-focused environment. Responsibilities as a PrincipalEngineer: Contribute to the businesses technology strategy and architecture Contribute to the backend Kotlin infrastructure Ship resilient and well tested production code Collaborate with different teams to deliver … and bonus Hybrid office/remote-working practices Private Health Insurance Pension Scheme Life Assurance Scheme with death in service benefit of 4x salary This is a career defining PrincipalEngineer position with the potential to have a massive impact on the technology strategy of a business that is directly shaping the future of intelligent digital infrastructure. **Unfortunately More ❯
Position : Staff/PrincipalEngineer Location : London My client are seeking for an accomplished Staff Engineer to help shape the future of our data and backend platforms. This is a senior technical leadership role for someone who is currently operating at a Staff or PrincipalEngineer level and ready to have a company wide impact. … business strategy Anticipate industry trends, evaluate new technologies, and guide adoption of solutions that keep us ahead of the curve What we’re looking for Experience operating at Staff Engineer or PrincipalEngineer level for atleast 2 years Expertise in streaming platforms such as Flink, Kafka, and Spark, with experience designing large-scale event driven architectures Strong More ❯
Position : Staff/PrincipalEngineer Location : London My client are seeking for an accomplished Staff Engineer to help shape the future of our data and backend platforms. This is a senior technical leadership role for someone who is currently operating at a Staff or PrincipalEngineer level and ready to have a company wide impact. … business strategy Anticipate industry trends, evaluate new technologies, and guide adoption of solutions that keep us ahead of the curve What we’re looking for Experience operating at Staff Engineer or PrincipalEngineer level for atleast 2 years Expertise in streaming platforms such as Flink, Kafka, and Spark, with experience designing large-scale event driven architectures Strong More ❯
london (city of london), south east england, united kingdom
Signify Technology
Position : Staff/PrincipalEngineer Location : London My client are seeking for an accomplished Staff Engineer to help shape the future of our data and backend platforms. This is a senior technical leadership role for someone who is currently operating at a Staff or PrincipalEngineer level and ready to have a company wide impact. … business strategy Anticipate industry trends, evaluate new technologies, and guide adoption of solutions that keep us ahead of the curve What we’re looking for Experience operating at Staff Engineer or PrincipalEngineer level for atleast 2 years Expertise in streaming platforms such as Flink, Kafka, and Spark, with experience designing large-scale event driven architectures Strong More ❯
Bristol, Avon, South West, United Kingdom Hybrid / WFH Options
Anson Mccade
Principal Java Engineer £75,000 - 90,000 GBP Hybrid WORKING Location: Bristol, South West - United Kingdom Type: Permanent Role: Principal Software Engineer Salary: £75,000 - £90,000 Additional Package: Various Bonus, Extensive Benefits Package Location: Bristol, Hybrid Are you a Principal Software Engineer ready to step into a high-impact leadership role? This opportunity … Build strong relationships with stakeholders and guide teams through agile delivery processes. Ensure scalable, secure, and cost-effective solutions are delivered to meet customer requirements. Skills & Experience of a Principal Software Engineer: Strong full stack development background with expertise in Java 11+, Spring Boot, and React. Solid experience with microservices architecture and modern software practices. Strong understanding of … passport and have lived in the UK for 5+ years). If you're excited to lead a team and shape the delivery of key government solutions as a Principal Software Engineer, this role will provide both challenge and reward in equal measure. Want to hear more? Message me anytime. Linked In: Ciaran Cleland Role: Principal Software More ❯
Stoke Gifford, Gloucestershire, United Kingdom Hybrid / WFH Options
Synoptix
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
Bristol, Stoke Gifford, Gloucestershire, United Kingdom Hybrid / WFH Options
Synoptix
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
Bristol, Avon, South West, United Kingdom Hybrid / WFH Options
Synoptix Limited
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
newport, wales, united kingdom Hybrid / WFH Options
Synoptix Limited
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
bath, south west england, united kingdom Hybrid / WFH Options
Synoptix Limited
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
bristol, south west england, united kingdom Hybrid / WFH Options
Synoptix Limited
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
bradley stoke, south west england, united kingdom Hybrid / WFH Options
Synoptix Limited
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
Cambridge, Cambridgeshire, East Anglia, United Kingdom
Singular Recruitment
Principal RF Engineer As the selected Principal RF Engineer , your role will be split between designing RF systems at component level, and providing technical leadership for the development of projects. The right candidate will have a solid background in RF design, experience of taking a leading role on engineering projects and be an excellent communicator. The … role is an 80/20 split in favour of design to leadership. Responsibilities for the role of Principal RF Engineer will include: Designing and developing RF systems at the component level. Conducting performance tests and optimizations to meet specified performance criteria. Leading integration and prototyping efforts to ensure seamless integration of sub-systems with larger systems or … support on technical issues. Engage in project management activities, such as updating project timelines, managing resources, and communicating with stakeholders to ensure project milestones are met. As the selected Principal RF Engineer, your experience will include: RF electronics design background. Strong ability to demonstrate technical leadership within a product development environment. Experience of specifying technical requirements and taking More ❯
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
Principal Systems Engineer The Role: As a Principal Systems Engineer at Synoptix you will be helping guide the scope and direction of the engineering projects you are working on. As an agile business in the true sense the principalengineer will be given the relative freedom to take ownership at the strategic level of More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Computer Futures
Principal Software Engineer - Lead the Future of UK GovTech Innovation Up to £100,000 + Premium Benefits Package Remote-First | Just 1 Day Onsite Every 2 Weeks SC Clearable | British Citizens Only Where Technology Meets Purpose Are you ready to lead engineering efforts that directly impact national security, public services, and digital transformation across the UK? This is … more than just a job-it's a chance to build technology that matters , in a space where innovation meets mission-critical delivery. We're looking for a Principal Software Engineer to join a high-performing team at the forefront of UK GovTech. You'll architect secure, scalable platforms, mentor elite engineers, and shape technical strategy across programmes … that serve millions of citizens and protect national interests. Your Mission As a PrincipalEngineer, you'll be a technical leader, strategic thinker, and hands-on problem solver. You'll work closely with delivery teams, stakeholders, and government partners to ensure solutions are robust, secure, and future-proof. What You'll Be Doing: Architect cloud-native platforms using More ❯
Principal Hardware Engineer | Marine | AUV | Robotics | Harwell – Hybrid | £65,000pa - £70,000pa plus share scheme & benefits: A once in a lifetime opportunity has arisen for a passionate Principal Hardware Engineer to join a stealth robotics company based in the Oxfordshire area. This amazing business and AUV submersible robot have massive potential across a range of different … industry sectors. The Principal Hardware Engineer will lead in the design, integration, and testing of advanced hardware systems for autonomous underwater vehicles (AUVs) and remotely operated vehicles (ROVs). In this role, you will be responsible for developing mission-critical electronics and system architectures that operate reliably in challenging marine environments. If you’re passionate about robotics within … the maritime industry and the autonomous vehicle and unmanned vehicle industry, you honestly need to make contact with us, this Principal Hardware Engineer role is not to be missed. Candidates must be British Citizens or have lived in the UK for a minimum of 5 years, due to needing SC clearance. Key Responsibilities: Lead the architecture and development More ❯
South Croydon, Surrey, England, United Kingdom Hybrid / WFH Options
Sanderson
Principal DevOps Engineer Active SC Required £727 Inside for 6 months Remote - London office Sanderson Government and Defence are supporting a government supplier in their search for a Principal DevOps Engineer on a contract basis. This role will be on a fully remote basis. Requirements are as follows: Proven experience at Lead/PrincipalEngineerMore ❯
Principal Software Engineer/Architect (C# .Net AWS) Remote/Bristol to £100k Are you a highly technical Principal Software Engineer with strong architecture and design skills? You could be progressing your career at a financial services tech consultancy that specialise in solutions for Pensions and Investment Managers. As a Principal Software Engineer/… collaborative with great communication skills and experience of coaching and mentoring You're comfortable working as part of a leadership team What's in it for you: As a Principal Software Engineer/Architect you will earn a competitive package: Salary to £100k 25 days holiday plus an extra day off for your birthday and additional three days … Illness Cover Paid maternity, paternity, adoption or shared parental leave Mostly remote/work from home Subsidised gym membership and more Apply now to find out more about this Principal Software Engineer/Architect (C# .Net AWS CQRS Event Sourcing) opportunity. At Client Server we believe in a diverse workplace that allows people to play to their strengths More ❯
PrincipalEngineer – Technology Consulting – Java/Spring London, Leeds, Manchester or Newcastle | Permanent | Hybrid (3 days onsite) £87,000–£118,000 + up to 20% bonus + exceptional benefits Join a forward-thinking technology consultancy as a PrincipalEngineer and take the lead on delivering complex, high-impact solutions for clients across the UK. This is More ❯
Employment Type: Full-Time
Salary: £87,000 - £118,000 per annum, Inc benefits
PrincipalEngineer – Technology Consulting – Java/Spring London, Leeds, Manchester or Newcastle | Permanent | Hybrid (3 days onsite) £87,000–£118,000 + up to 20% bonus + exceptional benefits Join a forward-thinking technology consultancy as a PrincipalEngineer and take the lead on delivering complex, high-impact solutions for clients across the UK. This is More ❯
Employment Type: Full-Time
Salary: £87,000 - £118,000 per annum, Inc benefits
Newcastle Upon Tyne, Tyne and Wear, England, United Kingdom
Reed
PrincipalEngineer – Technology Consulting – Java/Spring London, Leeds, Manchester or Newcastle | Permanent | Hybrid (3 days onsite) £87,000–£118,000 + up to 20% bonus + exceptional benefits Join a forward-thinking technology consultancy as a PrincipalEngineer and take the lead on delivering complex, high-impact solutions for clients across the UK. This is More ❯
Employment Type: Full-Time
Salary: £87,000 - £118,000 per annum, Inc benefits
Oxfordshire, Milton Hill, United Kingdom Hybrid / WFH Options
Mars Recruitment
Principal Software Engineer | C++ | Python | Linux Oxfordshire | Hybrid £65,000pa plus benefits: Do you enjoy technically leading and mentoring a team of Software Engineers utilising C++ & Python on Linux, passing on your knowledge and experience to help nurture and develop future Engineers? If so, this Principal Software Engineer role will be perfect for you. Our client … has seen rapid growth over the last few years, and to help develop their talented team of Software Engineers, they now seek a Principal Software Engineer who can technically lead, mentor and develop during an exciting period of innovation. On a day-to-day basis you will develop and support software applications and drivers for a range of … products. You will be technically responsible for ensuring projects meet internal and external customer requirements and completing concept designs through to production. The successful Principal Software Engineer will need the following qualification, experience and skills: A degree in a Software Engineering, Mathematics or Science/Materials subject Experience in ARM based software developments using C/C++ Experience More ❯