london, south east england, united kingdom Hybrid / WFH Options
Wave Talent
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 PrincipalEngineer 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 ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Wave Talent
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 PrincipalEngineer 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 ❯
slough, south east england, united kingdom Hybrid / WFH Options
Wave Talent
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 PrincipalEngineer 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 ❯
Job Title: Principal Platform Engineer Location: Remote (UK-based) Salary: c.£73,000 Why Apply? Play a pivotal role in delivering cutting-edge cloud engineering and software development practices across a high-impact public sector organisation. As a Principal Platform Engineer, you'll shape cloud strategy, lead modern engineering approaches, and mentor others, all within a … values-driven environment. This is a fantastic opportunity to drive meaningful change, influence architectural decisions, and work with emerging technologies like AI, CI/CD, and Infrastructure as Code. Principal Platform Engineer Responsibilities Lead the design, build, testing and support of secure, scalable Azure-based cloud services. Define and promote best practices in automation, CI/CD, and … technologies, including AI and advanced analytics. Oversee engineering governance and technical standards across transformation and operational projects. Mentor engineers and ensure alignment with technical standards, security, and delivery objectives. Principal Platform Engineer Requirements Extensive experience in cloud engineering and modern software development. Advanced knowledge of Azure services across IaaS, PaaS, and SaaS models. Proficiency in Infrastructure as Code More ❯
Job Title: Principal Platform Engineer Location: Remote (UK-based) Salary: c.£73,000 Why Apply? Play a pivotal role in delivering cutting-edge cloud engineering and software development practices across a high-impact public sector organisation. As a Principal Platform Engineer, you'll shape cloud strategy, lead modern engineering approaches, and mentor others, all within a … values-driven environment. This is a fantastic opportunity to drive meaningful change, influence architectural decisions, and work with emerging technologies like AI, CI/CD, and Infrastructure as Code. Principal Platform Engineer Responsibilities Lead the design, build, testing and support of secure, scalable Azure-based cloud services. Define and promote best practices in automation, CI/CD, and … technologies, including AI and advanced analytics. Oversee engineering governance and technical standards across transformation and operational projects. Mentor engineers and ensure alignment with technical standards, security, and delivery objectives. Principal Platform Engineer Requirements Extensive experience in cloud engineering and modern software development. Advanced knowledge of Azure services across IaaS, PaaS, and SaaS models. Proficiency in Infrastructure as Code More ❯
Cheltenham, England, United Kingdom Hybrid / WFH Options
Searchability NS&D
Principal Software Engineer – National Security - SC Clearance Role: Principal Software Engineer Location: Cheltenham - Hybrid Work Clearance: SC Cleared/Eligible for SC Salary: £75,000 - £95,000 About the Role Searchability NS&D is recruiting a Principal Software Engineers to join an Agile delivery team supporting a range of complex and high-impact Central Government … professional development Social: Regular team get-togethers, summer parties, and annual company away-days Onsite Allowances: Expenses provided for lunch and refreshments Apply If you’re an ambitious Software Engineer looking to apply your skills to impactful, mission-focused projects, we’d love to hear from you. #Java #AWS #React #JavaScript #TypeScript #Kubernetes #Docker #SC #SCCleared #FullStack More ❯
gloucester, south west england, united kingdom Hybrid / WFH Options
Searchability NS&D
Principal Software Engineer – National Security - SC Clearance Role: Principal Software Engineer Location: Cheltenham - Hybrid Work Clearance: SC Cleared/Eligible for SC Salary: £75,000 - £95,000 About the Role Searchability NS&D is recruiting a Principal Software Engineers to join an Agile delivery team supporting a range of complex and high-impact Central Government … professional development Social: Regular team get-togethers, summer parties, and annual company away-days Onsite Allowances: Expenses provided for lunch and refreshments Apply If you’re an ambitious Software Engineer looking to apply your skills to impactful, mission-focused projects, we’d love to hear from you. #Java #AWS #React #JavaScript #TypeScript #Kubernetes #Docker #SC #SCCleared #FullStack More ❯
London, England, United Kingdom Hybrid / WFH Options
Client Server
Principal Platform Engineer London/WFH to £150k 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 ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Client Server Ltd
Principal Platform Engineer London/WFH to £150k 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 ❯
slough, south east england, united kingdom Hybrid / WFH Options
Client Server
Principal Platform Engineer London/WFH to £150k 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 ❯
Manchester, Lancashire, England, United Kingdom Hybrid / WFH Options
Robert Walters
delivery of complex programmes and risk management. Due to continued growth and acquisition, they are now keen to expand their cyber security offering and will be appointing an experienced Principal Cyber Security Engineer, to join their UK cyber team. This role will pay a range up to £90,000 plus benefits with a home-based working model. As … an experienced Principal Cyber Security Engineer, you will design, implement and manage security measures to protect the Azure & M365 estates. Principal Cyber Security Engineer: Duties Implement/Manage security measures to protect Azure, M365, Cloud Infrastructure & Data Deep knowledge of Azure & M365 security services Ensure security of cloud infrastructure Identify & implement automation opportunities Coordinate/Manage … engineering projects Design/Develop/Maintain security architecture Mentor the engineering function, provide technical leadership Principal Cyber Security Engineer: Duties Proven experience with Azure & M365 security tools and technologies Deep knowledge of security frameworks and standards (NIST, CIS, ISO27001) Knowledge of scripting & automation tools (PowerShell, Azure CLI, Azure Logic Apps) Principal Cyber Security Engineer: Relevant More ❯
Birmingham, West Midlands, England, United Kingdom Hybrid / WFH Options
Robert Walters
delivery of complex programmes and risk management. Due to continued growth and acquisition, they are now keen to expand their cyber security offering and will be appointing an experienced Principal Cyber Security Engineer, to join their UK cyber team. This role will pay a range up to £90,000 plus benefits with a home-based working model. As … an experienced Principal Cyber Security Engineer, you will design, implement and manage security measures to protect the Azure & M365 estates. Principal Cyber Security Engineer: Duties Implement/Manage security measures to protect Azure, M365, Cloud Infrastructure & Data Deep knowledge of Azure & M365 security services Ensure security of cloud infrastructure Identify & implement automation opportunities Coordinate/Manage … engineering projects Design/Develop/Maintain security architecture Mentor the engineering function, provide technical leadership Principal Cyber Security Engineer: Duties Proven experience with Azure & M365 security tools and technologies Deep knowledge of security frameworks and standards (NIST, CIS, ISO27001) Knowledge of scripting & automation tools (PowerShell, Azure CLI, Azure Logic Apps) Principal Cyber Security Engineer: Relevant More ❯
Edinburgh, Scotland, United Kingdom Hybrid / WFH Options
North Scout
Principal Software Engineer Cloud Engineering Scale-up c£100k North Scout are partnered with a fast-growing cloud engineering business that’s doubled revenues, expanded its technical team, and earned a strong reputation for delivering complex cloud programmes with pace and precision. They’re looking for a Principal Software Engineer to take a leading role across … person to earn up to £100k with a strong package which includes stock options, private healthcare and loads of smaller benefits. If you’re a technically strong, people-focused engineer who enjoys leading from the front and shaping modern cloud solutions, we’d love to hear from you. More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Computer Futures
Principal Software Engineer - Shape the Future of UK GovTech Up to £95,000 + Premium Benefits Remote-First | Just 1 Day Onsite Every 2 Weeks SC Clearable | British Citizens Only Lead Innovation. Drive Transformation. Make an Impact. Ready to take the reins on projects that power national security and digital transformation This is your chance to lead at … the intersection of technology and purpose . As a Principal Software Engineer , you'll architect cloud-native platforms , mentor elite engineering teams, and influence technical strategy across mission-critical government programmes . Your work won't just be code-it will shape the future of UK GovTech . Your Role in Action Architect secure, scalable, resilient systems using More ❯
Luton, England, United Kingdom Hybrid / WFH Options
easyJet
Principal Software Engineer TEAM At easyJet, we are on a mission to transform our Airline Planning and Operations capability into a world-class, digitally-optimised operation through the use of new and emerging technologies. We are looking for a Principal Software Engineer to act as the lead technical person within the relevant product team, setting the More ❯
bedford, east anglia, united kingdom Hybrid / WFH Options
easyJet
Principal Software Engineer TEAM At easyJet, we are on a mission to transform our Airline Planning and Operations capability into a world-class, digitally-optimised operation through the use of new and emerging technologies. We are looking for a Principal Software Engineer to act as the lead technical person within the relevant product team, setting the More ❯
luton, bedfordshire, east anglia, united kingdom Hybrid / WFH Options
easyJet
Principal Software Engineer TEAM At easyJet, we are on a mission to transform our Airline Planning and Operations capability into a world-class, digitally-optimised operation through the use of new and emerging technologies. We are looking for a Principal Software Engineer to act as the lead technical person within the relevant product team, setting the More ❯
watford, hertfordshire, east anglia, united kingdom Hybrid / WFH Options
easyJet
Principal Software Engineer TEAM At easyJet, we are on a mission to transform our Airline Planning and Operations capability into a world-class, digitally-optimised operation through the use of new and emerging technologies. We are looking for a Principal Software Engineer to act as the lead technical person within the relevant product team, setting the More ❯
Camberley, Surrey, South East, United Kingdom Hybrid / WFH Options
Morson Edge
PrincipalEngineer – Product Security Location: Frimley (hybrid – average of 2–3 days onsite per week) Rate: £85.40 per hour/umbrella (inside IR35), approx. £632 per day Contract: 6-months initially (potential for extension or to go permanent) Hours: 37 per week Clearance: Active SC Clearance required Restrictions: ITAR and “UK Eyes Only”, please note only sole British … citizens can apply About the Role We're seeking a highly experienced Principal Product Security Engineer to join one of our clients Product Security Engineering teams, supporting the delivery and through-life management of secure submarine systems and products. As a key focal point for security and information risk, you'll apply deep technical expertise to ensure that More ❯
newtownabbey, antrim, united kingdom Hybrid / WFH Options
Ocho
Principal .Net Engineer – 50/50 Hands-on About the Company: My client is a global leader in market infrastructure. With a focus on data solutions, and digital transformation, they are a World leader in their market. About the Role: My Client is seeking a Principal Software Engineer with a strong background in .NET Core and More ❯
lisburn, antrim, united kingdom Hybrid / WFH Options
Ocho
Principal .Net Engineer – 50/50 Hands-on About the Company: My client is a global leader in market infrastructure. With a focus on data solutions, and digital transformation, they are a World leader in their market. About the Role: My Client is seeking a Principal Software Engineer with a strong background in .NET Core and More ❯
Belfast, Northern Ireland, United Kingdom Hybrid / WFH Options
Ocho
Principal .Net Engineer – 50/50 Hands-on About the Company: My client is a global leader in market infrastructure. With a focus on data solutions, and digital transformation, they are a World leader in their market. About the Role: My Client is seeking a Principal Software Engineer with a strong background in .NET Core and More ❯
Principal Network Engineer I or II Location: UK or Ireland (Remote) Salary: Up to 115,000 + bonus Employment Type: Permanent We are looking for an experienced Principal Network Engineer (Level I or II) to join a high-performing global engineering team building and optimising a large-scale enterprise network. This is a hands-on, deeply More ❯
Principal Network Engineer I or II Location: UK or Ireland (Remote) Salary: Up to £115,000 + bonus Employment Type: Permanent We are looking for an experienced Principal Network Engineer (Level I or II) to join a high-performing global engineering team building and optimising a large-scale enterprise network. This is a hands-on, deeply More ❯
Camberley, Surrey, South East, United Kingdom Hybrid / WFH Options
Telent Technology Services Ltd
team doing complex and critical work. Help build and keep the nation's critical infrastructure connected and protected 24/7. Reporting into the Head of Focal Engineering, the PrincipalEngineer will work on a number of exciting Wireless Design and Implementation projects for customers across England in the Education and Government sectors as well as others. This … design and implementation of enterprise-grade wireless network solutions across universities in England, leveraging Cisco and Juniper technologies to deliver secure, scalable, and high-performance connectivity. Act as the principal design authority, setting technical direction, standards, and best practices for campus wireless and wired infrastructure, ensuring alignment with university digital transformation objectives. Develop and review detailed low-level designs … focused discussions. Maintain active CCIE certification (Wireless or Enterprise Infrastructure) and ensure ongoing professional development to sustain expert-level technical credibility. Who you are: You're a CCIE level Principal Wireless Engineer with deep expertise in Cisco and Juniper technologies, driven by a passion for delivering world-class wireless connectivity. Key Requirements: Expert-level knowledge of Cisco and More ❯