26 to 50 of 330 Permanent Principal Engineer Jobs

Principal Engineer – Epitaxial Process Development (InP) Location : Onsite – Ipswich, UK We are looking for a dynamic and forward-thinking Principal Engineer to join a cutting-edge R&D team in Ipswich. This is a unique opportunity to play a key role in the advancement of epitaxial growth technologies focused on Indium Phosphide (InP) for next-generation More ❯

Principal Mechanical Engineer – Data Centres Manchester 9 Day working fortnight up to £64,000 + £4560 car allowance About the role A leading engineering consultancy is seeking a Principal Mechanical Engineer to join its Manchester team, with a primary focus on mission critical facilities and data centres. The firm has an established reputation for delivering technically … the UK and internationally, and this role provides the opportunity to play a pivotal part in one of the fastest-growing and most dynamic sectors in the industry. As Principal Engineer, you will take responsibility for the design and delivery of mechanical services within large-scale data centre projects. You will be working at the forefront of innovative … are delivered on time and to specification. Monitor risks, costs, and resources, reporting progress to senior management. About you The ideal candidate will bring: Significant experience as a Mechanical Engineer within the data centre or mission critical sector. A strong track record of delivering mechanical services designs, including HVAC, cooling, and resilience strategies for large-scale, high-reliability projects. More ❯

Principal Mechanical Engineer – Data Centres Manchester 9 Day working fortnight up to £64,000 + £4560 car allowance About the role A leading engineering consultancy is seeking a Principal Mechanical Engineer to join its Manchester team, with a primary focus on mission critical facilities and data centres. The firm has an established reputation for delivering technically … the UK and internationally, and this role provides the opportunity to play a pivotal part in one of the fastest-growing and most dynamic sectors in the industry. As Principal Engineer, you will take responsibility for the design and delivery of mechanical services within large-scale data centre projects. You will be working at the forefront of innovative … are delivered on time and to specification. Monitor risks, costs, and resources, reporting progress to senior management. About you The ideal candidate will bring: Significant experience as a Mechanical Engineer within the data centre or mission critical sector. A strong track record of delivering mechanical services designs, including HVAC, cooling, and resilience strategies for large-scale, high-reliability projects. More ❯

Principal Mechanical Engineer – Data Centres Manchester 9 Day working fortnight up to £64,000 + £4560 car allowance About the role A leading engineering consultancy is seeking a Principal Mechanical Engineer to join its Manchester team, with a primary focus on mission critical facilities and data centres. The firm has an established reputation for delivering technically … the UK and internationally, and this role provides the opportunity to play a pivotal part in one of the fastest-growing and most dynamic sectors in the industry. As Principal Engineer, you will take responsibility for the design and delivery of mechanical services within large-scale data centre projects. You will be working at the forefront of innovative … are delivered on time and to specification. Monitor risks, costs, and resources, reporting progress to senior management. About you The ideal candidate will bring: Significant experience as a Mechanical Engineer within the data centre or mission critical sector. A strong track record of delivering mechanical services designs, including HVAC, cooling, and resilience strategies for large-scale, high-reliability projects. More ❯

Principal/Senior Principal Software Engineer page is loaded Principal/Senior Principal Software Engineerlocations: Welwyntime type: Tempo integralposted on: Publicado hojetime left to apply: Data de término: 30 de setembro de 2025 (13 dias restantes para se candidatar)job requisition id: 16At Roche you can show up as yourself, embraced for the unique qualities … adoption. Our team specializes in building Data Pipelines and Applications for data acquisition, collection, storage, transformation, linkage and sharing. Join our Data and Digital Catalyst team as a Software Engineer, where you will develop the modernized and interconnected computational and data ecosystems that are foundational to our research. You'll build robust and scalable systems that unlock the potential … to build common, reusable solutions. Mentor junior developers, fostering their professional growth and upholding high engineering standards. Who You Are We are looking for a passionate and collaborative software engineer with a talent for building scalable, reliable platforms. You thrive on engaging with scientific partners to solve complex challenges and are dedicated to engineering best practices.You bring the following More ❯

Job Title: Software Engineer - Principal I Location: On-site - Dulles Clearance Required: Active Secret (S); must be able to obtain TS/SCI and DHS Suitability Company: Quantum Science Solutions (QSS) Rate: Open Position Overview Quantum Science Solutions (QSS) is seeking a Software Engineer - Principal I with expertise in data engineering and cloud-based development to More ❯

linguists, and analysts are dedicated to empowering our clients, fulfilling The Mission, and remaining trusted leaders and advisers in national security and technology solutions. OPS Consulting is seeking a Principal Engineer to work in Laurel, Maryland. Job Description: The Principal Engineer (PE) will provide oversight to tactical engineering activities to accomplish system goals to include coordinating … and participating in design meetings and technical reviews. The PE will support HPC installation and deployment while working as lead system engineer supporting and achieving HPC program goals. Responsibilities: Develop technical plans to guide capability development. Coordinate test plans and procedures. Coordinate thread testing and verification for test results. Report status of capability development. Work with system architects, system … experience with an agency or HPC development program. Eight (8) years of experience in technical roles for Government or industry customer. Five (5) years of experience as a system engineer supporting programs to develop and field large-scale systems to include expertise in system architecture, requirements analysis, system documentation, system evaluation, and process execution and evaluation. B.S. in Computer More ❯

Title: Principal DevOps Engineer Salary: Up to £100,000 plus bonus! Location: Fully Remote! Are you a Principal Engineer who's looking for your next challenge? If so.. iO Associates is supporting a rapidly growing family-focused FinTech company on their search for a talented Principal DevOps Engineer. This business is on a mission to … by a leading global financial institution. Now, they're scaling their platform and building out their engineering team to deliver a seamless, secure experience at scale. The Role: As Principal DevOps Engineer, you'll be the technical lead for all things DevOps and cloud infrastructure. You'll be shaping the future of a high-availability, cloud-native platform … practices in automation, CI/CD, observability, and security Collaborate closely with developers working in TypeScript to streamline deployments and architecture Influence technology decisions and scaling strategies at a principal level About You We're looking for someone who: Has deep experience designing and running production environments in AWS Can confidently work with Lambda, CDK, Postgres , and CI/ More ❯

Principal Software Engineer with a Java backend/full-stack experienceto take a lead role in designing and architectingthe SaaS platform for an early-stage clean-tech startup on a mission to accelerate the shift to a greener energy worldby optimising complex grid-scalebattery assets for asset owners through data, ML, and SaaS innovation. Proximity to Cambridge would … ideal, although a remote role across the UK/with some company meetups . Salary £70-90k + Bens + Options Key skills you will bring as a Principal Software Engineer would include : Proven track record in building enterprise-grade Java/Microservices backend systems (Spring Boot or Micronaut preferred) Cloud Native development ideally with AWS Proven … practices (Kubernetes, Terraform, containers, CI/CD, ECS, Gitlab etc). A proactive, startup mindset with the ability to balance strategy and execution. Nice to have skills as a PrincipalEngineer, includes some of Experience with frontend UI design and frontend development (MUI/React/JavaScript/TypeScript preferred). Familiarity with Data Engineering patterns, Data Products/Kafka/ More ❯

Principal SecOps Engineer - Hybrid - Nottinghamshire - Up to £75000 + Bonus We're seeking an experienced Principal SecOps Engineer to take a leading role in strengthening our clients' security operations. This is a hands-on, strategic position within the Technical Operations team, where you'll set the direction for security practices, guide incident response, and support the … Healthcare cash plan, company pension, life assurance, and recognition schemes Flexible hybrid working model, with ongoing training and career development A vibrant culture with regular team socials and events Principal SecOps Engineer - Hybrid - Nottinghamshire - Up to £75000 + Bonus More ❯

Principal Sales Engineer Location: Remote (UK-based) - with travel to customer sites Salary: £(phone number removed)-£(phone number removed) +20% bonus + car allowance + extensive benefits package Clearance Requirement: DV (Developed Vetting) - required Please note: Candidates with only current SC clearance will be considered only in exceptional cases and must be eligible and willing to undergo full … visibility and insight at an unparalleled scale they help clients solve problems faster, secure what matters, and drive continuous innovation across their digital ecosystems. We are now seeking a Principal Sales Engineer to support the growth of UK public sector accounts. This is a remote, client-facing role for a highly technical and experienced presales professional with a … Radwhere, Riverbed, A10, ExtraHop Experience authoring whitepapers , contributing to product strategy Familiarity with security audits , RFP/RFI responses Track record of mentoring technical presales teams Role & Responsibilities As Principal Sales Engineer , you will play a vital role in driving revenue by delivering technical presales support , demonstrating product value , and shaping best-fit solutions . Reporting to the More ❯

Principal Sales Engineer Location: Central or Southern UK Remote (UK-based) – with travel to customer sites Salary: £125-£155 +20% bonus + car allowance + extensive benefits package Clearance Requirement: DV (Developed Vetting) – required Our client is at the forefront of digital transformation, supporting the world’s most essential organisations through their most complex digital challenges. By providing … visibility and insight at an unparalleled scale they help clients solve problems faster, secure what matters, and drive continuous innovation across their digital ecosystems. We are now seeking a Principal Sales Engineer to support the growth of UK public sector accounts. This is a remote, client-facing role for a highly technical and experienced presales professional with a … strong Government/Public Sector background and current DV clearance. Role & Responsibilities As Principal Sales Engineer, you will play a vital role in driving revenue by delivering technical presales support, demonstrating product value, and shaping best-fit solutions. Reporting to the Regional Sales Director, you will act as a trusted advisor for public sector clients and internal stakeholders. More ❯

Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they … re looking for an outstanding Principal Engineer to drive their platform forward. The company in a nutshell Funding : $25M Series A from top-tier investors Leadership : Founders with a track record of building one of Europe’s best-known B2B scale-ups Growth : Plans to 10× revenue and expand to 200+ enterprise customers within 3 years What’s More ❯

Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they … re looking for an outstanding Principal Engineer to drive their platform forward. The company in a nutshell Funding : $25M Series A from top-tier investors Leadership : Founders with a track record of building one of Europe’s best-known B2B scale-ups Growth : Plans to 10× revenue and expand to 200+ enterprise customers within 3 years What’s More ❯

Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they … re looking for an outstanding Principal Engineer to drive their platform forward. The company in a nutshell Funding : $25M Series A from top-tier investors Leadership : Founders with a track record of building one of Europe’s best-known B2B scale-ups Growth : Plans to 10× revenue and expand to 200+ enterprise customers within 3 years What’s More ❯

Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they … re looking for an outstanding Principal Engineer to drive their platform forward. The company in a nutshell Funding : $25M Series A from top-tier investors Leadership : Founders with a track record of building one of Europe’s best-known B2B scale-ups Growth : Plans to 10× revenue and expand to 200+ enterprise customers within 3 years What’s More ❯

Principal JavaScript Engineer (TypeScript/React/Node.js) £150,000–£170,000 + Equity | Hybrid – 3 days in London We’re helping a VC-backed SaaS scaleup reinvent how organisations manage and approve spend, from software requests to supplier onboarding, and they’re gearing up for serious growth. With enterprise clients already on board and revenue climbing, they … re looking for an outstanding Principal Engineer to drive their platform forward. The company in a nutshell Funding : $25M Series A from top-tier investors Leadership : Founders with a track record of building one of Europe’s best-known B2B scale-ups Growth : Plans to 10× revenue and expand to 200+ enterprise customers within 3 years What’s More ❯

Principal Software Engineer Fully Remote | Permanent | Competitive Salary + Benefits Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a Principal Software Engineer to join their senior engineering leadership team. This is a rare opportunity to combine hands-on development with strategic influence, guiding architecture decisions and shaping the More ❯

Principal Systems Engineer | Cheshunt The Principal Systems Engineer position is part of the Systems Engineering team within a leading UK-based technology company specializing in advanced radar solutions. This role involves working on both internally and externally funded systems projects that utilize cutting-edge solid-state radar technology. The successful candidate will engage across the entire More ❯

Principal Platform Engineer London/WFH to £100k Are you a technologist with start-up experience and a first class education looking for a new opportunity? You could be joining a small Fintech start-up run by small, successful and proven team of finance technology entrepreneurs, backed by Silicon Valley investors, as they build out the product, currently … in stealth mode. As a Principal Platform Engineer you'll have an impactful role with lots of influence. Initially you'll assess the current tech set up based on GCP, Python, TypeScript, PostgreSQL and Terraform; establish the production environment and extend the platform to enable scalability. You'll collaborate closely with the CTO and Lead Software Engineer … of Technology. Location/WFH: You'll be based in Central London, with flexibility to work from home twice a week. About you: You have experience in a similar Principal Platform Engineer role within start-up/scale-up environments with strong commercial acumen You have achieved a 2.1 or above BSc from a well renowned top world More ❯

Principal Platform Engineer London/WFH to £100k Are you a technologist with start-up experience and a first class education looking for a new opportunity? You could be joining a small Fintech start-up run by small, successful and proven team of finance technology entrepreneurs, backed by Silicon Valley investors, as they build out the product, currently … in stealth mode. As a Principal Platform Engineer you'll have an impactful role with lots of influence. Initially you'll assess the current tech set up based on GCP, Python, TypeScript, PostgreSQL and Terraform; establish the production environment and extend the platform to enable scalability. You'll collaborate closely with the CTO and Lead Software Engineer … of Technology. Location/WFH: You'll be based in Central London, with flexibility to work from home twice a week. About you: You have experience in a similar Principal Platform Engineer role within start-up/scale-up environments with strong commercial acumen You have achieved a 2.1 or above BSc from a well renowned top world More ❯

Principal Platform Engineer London/WFH to £100k Are you a technologist with start-up experience and a first class education looking for a new opportunity? You could be joining a small Fintech start-up run by small, successful and proven team of finance technology entrepreneurs, backed by Silicon Valley investors, as they build out the product, currently … in stealth mode. As a Principal Platform Engineer you'll have an impactful role with lots of influence. Initially you'll assess the current tech set up based on GCP, Python, TypeScript, PostgreSQL and Terraform; establish the production environment and extend the platform to enable scalability. You'll collaborate closely with the CTO and Lead Software Engineer … of Technology. Location/WFH: You'll be based in Central London, with flexibility to work from home twice a week. About you: You have experience in a similar Principal Platform Engineer role within start-up/scale-up environments with strong commercial acumen You have achieved a 2.1 or above BSc from a well renowned top world More ❯

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 click More ❯

minutes. Click OK to reset the timer to 0 minutes. You have been signed out. This service is set to sign out after 0 minutes of inactivity. Job Description - Principal Systems Engineer () Job Description Principal Systems Engineer - Description Job Title: Principal Systems Engineer Location: Coventry. We offer a range of hybrid and flexible working More ❯

Principal Software Engineer - Lead the Future of UK GovTech Up to £95,000 + Elite Benefits Remote First (Just 1 Day Onsite Every Fortnight)?? SC Clearable - British Citizens Only Ready to lead innovation that matters? Join a mission-driven tech powerhouse where your code helps protect national interests, drive digital transformation, and shape the future of government technology. … We're looking for a Principal Software Engineer to architect cloud-native solutions, mentor brilliant engineers, and lead delivery across high-impact government programmes. This is your chance to combine deep technical expertise with strategic leadership in a collaborative, forward-thinking environment. You will need experience in Java, React.js and AWS to be successful in this position. What More ❯