Palmdale, California, United States Hybrid / WFH Options
Northrop Grumman
that frequently become available. Candidates who express an interest may be considered for future positions at Northrop Grumman. Join the Northrop Grumman team to develop the next generation of software for the next generation of platforms. Support development and integration of the latest technologies - AI/ML, Quantum computing, cloud, and digital design - to impact future generation aircraft. Become … our competitive pay and comprehensive benefits, we have the right opportunities to fit your life and launch your career today. Northrop Grumman Aeronautics Systems has an opening for a SoftwareEngineer or a PrincipalSoftwareEngineer to join our team of qualified, diverse individuals within our software organization. This role can be located in … every other Friday off. The position has No Remote or Hybrid work available. In this role you will be supporting critical design, development, integration, and test of product support software using software engineering best practices and standards in support of the flight software team. The selected candidate will develop this software by implementing principles of Scaled More ❯
Melbourne, Florida, United States Hybrid / WFH Options
Northrop Grumman
that frequently become available. Candidates who express an interest may be considered for future positions at Northrop Grumman. Join the Northrop Grumman team to develop the next generation of software for the next generation of platforms. Support development and integration of the latest technologies - AI/ML, Quantum computing, cloud, and digital design - to impact future generation aircraft. Become … our competitive pay and comprehensive benefits, we have the right opportunities to fit your life and launch your career today. Northrop Grumman Aeronautics Systems has an opening for a SoftwareEngineer or a PrincipalSoftwareEngineer to join our team of qualified, diverse individuals within our software organization. This role can be located in … every other Friday off. The position has No Remote or Hybrid work available. In this role you will be supporting critical design, development, integration, and test of product support software using software engineering best practices and standards in support of the flight software team. The selected candidate will develop this software by implementing principles of Scaled More ❯
Oxfordshire, Milton Hill, United Kingdom Hybrid / WFH Options
Mars Recruitment
PrincipalSoftwareEngineer | 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 PrincipalSoftwareEngineer 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 PrincipalSoftwareEngineer 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 … 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 PrincipalSoftwareEngineer will need the following qualification, experience and skills: A degree in a Software Engineering, Mathematics or Science/Materials subject Experience in ARM based More ❯
Cheltenham, England, United Kingdom Hybrid / WFH Options
Searchability NS&D
PrincipalSoftwareEngineer – National Security - SC Clearance Role: PrincipalSoftwareEngineer Location: Cheltenham - Hybrid Work Clearance: SC Cleared/Eligible for SC Salary: £75,000 - £95,000 About the Role Searchability NS&D is recruiting a PrincipalSoftware Engineers to join an Agile delivery team supporting a range of complex and high … impact Central Government and Critical National Infrastructure projects. You’ll help design, develop, and deploy bespoke software solutions that deliver real-world mission value. In this senior technical role, you’ll lead a team of software engineers, shape architectural decisions, and engage directly with senior customer stakeholders to deliver high-impact solutions. What You’ll Do Design, develop … and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public (AWS) and private cloud environments. Engage in all stages of the software lifecycle — from requirements More ❯
gloucester, south west england, united kingdom Hybrid / WFH Options
Searchability NS&D
PrincipalSoftwareEngineer – National Security - SC Clearance Role: PrincipalSoftwareEngineer Location: Cheltenham - Hybrid Work Clearance: SC Cleared/Eligible for SC Salary: £75,000 - £95,000 About the Role Searchability NS&D is recruiting a PrincipalSoftware Engineers to join an Agile delivery team supporting a range of complex and high … impact Central Government and Critical National Infrastructure projects. You’ll help design, develop, and deploy bespoke software solutions that deliver real-world mission value. In this senior technical role, you’ll lead a team of software engineers, shape architectural decisions, and engage directly with senior customer stakeholders to deliver high-impact solutions. What You’ll Do Design, develop … and test robust software solutions using modern engineering practices. Work with a range of open-source libraries, frameworks, and components. Build and maintain CI/CD pipelines using tools such as GitLab , ensuring code quality and security. Deploy software systems across public (AWS) and private cloud environments. Engage in all stages of the software lifecycle — from requirements More ❯
PrincipalSoftwareEngineer Salary: Up to £100k + Bonus Location: Central London - Once a Fortnight Tech Stack: Python/Vue/TypeScript/GCP or AWS Cloud Are you a product-driven SoftwareEngineer who cares about the why behind what you build? Do you thrive on shaping technical direction, driving innovation, and delivering solutions … that make a real impact for customers? This is a rare chance to join a London-based AI & Data software company backed by significant investment and global ambition. They’re hiring multiple PrincipalSoftware Engineers to play a pivotal role in the evolution of their products. You’ll work hands-on within cross-functional teams, influencing both … product and technical direction, while leveraging modern web technologies, cloud platforms, and strong engineering practices. What they're looking for in a PrincipalSoftwareEngineer: Proven expertise in Python (Django), TypeScript (Vue.js), serverless cloud platforms, and MongoDB A product-first mindset — curious, proactive, and always looking for ways to improve and innovate Experience working in cross-functional More ❯
Manchester, Lancashire, England, United Kingdom Hybrid / WFH Options
Searchability
PrincipalSoftwareEngineer - .NET/C#/AWS/CI/CD .NET, C#, AWS, JavaScript, DevOps, Agile, CI/CD Salary up to £75-80k + Bonus scheme Hybrid - 3 days a week on-site (Greater Manchester) For more information, please email me directly at or call on/Who We Are: We're a … self-organising squads, our teams are empowered to design, build, and deliver scalable, high-performance systems that shape the future of our business. We're now looking for a PrincipalSoftwareEngineer to take a leading role in guiding our engineering direction, mentoring talented developers, and driving the adoption of modern technologies and best practices. Who We … re Seeking: We're seeking a PrincipalSoftwareEngineer with deep expertise in .NET, C# and AWS who will play a key part in architectural decision-making, helping teams balance innovation and reliability while championing best practices. You'll work closely with other Principal Engineers, Product Owners, and cross-functional teams to deliver robust, maintainable, and More ❯
PrincipalSoftwareEngineer – .NET/C#/AWS/CI/CD .NET, C#, AWS, JavaScript, DevOps, Agile, CI/CD Salary up to £75-80k + Bonus scheme Hybrid – 3 days a week on-site (Greater Manchester) For more information, please email me directly at Patrick.doyle@searchability.com or call on 01244 567 920/… self-organising squads, our teams are empowered to design, build, and deliver scalable, high-performance systems that shape the future of our business. We’re now looking for a PrincipalSoftwareEngineer to take a leading role in guiding our engineering direction, mentoring talented developers, and driving the adoption of modern technologies and best practices. Who We … re Seeking: We’re seeking a PrincipalSoftwareEngineer with deep expertise in .NET, C# and AWS who will play a key part in architectural decision-making, helping teams balance innovation and reliability while championing best practices. You’ll work closely with other Principal Engineers, Product Owners, and cross-functional teams to deliver robust, maintainable, and More ❯
PrincipalSoftwareEngineer – Full Stack (Java/React) Level: Senior/Principal - £80,000–£95,000 Location: UK-wide | Hybrid (Client site travel as required) Function: Full Stack Development | Agile Delivery | Technical Leadership Industry: Consulting | Public Sector | Digital Transformation Base office: Manchester, Bristol, Cheltenham, or Plymouth Lead software excellence. Deliver strategic impact. Join a specialist … UK software consultancy delivering high-impact software solutions for public sector clients. They are seeking PrincipalSoftware Engineers to lead teams, shape delivery strategy, and drive innovation across government projects. About the Role As a PrincipalSoftwareEngineer, you will lead multiple teams, combining hands-on full stack development with technical leadership and … You will ensure the delivery of scalable, high-quality solutions and mentor engineers to achieve both team and project success. What You’ll Be Doing • Leading and mentoring two software teams across full lifecycle projects • Designing, developing, testing, and deploying software using Java and React • Engaging directly with clients to understand requirements and deliver high-value solutions • Driving More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Computer Futures
PrincipalSoftwareEngineer - 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 PrincipalSoftwareEngineer 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 More ❯
Luton, England, United Kingdom Hybrid / WFH Options
easyJet
PrincipalSoftwareEngineer 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 PrincipalSoftwareEngineer to act as the lead technical person within the relevant product team … resilience and crew experience. Product-led delivery is still relatively new to easyJet, and we’re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software … coding key components. You will also mentor other engineers, drive continuous improvement and foster close collaboration across Product, Data, UX and Quality-Engineering colleagues. By focusing on in-house software-engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the More ❯
bedford, east anglia, united kingdom Hybrid / WFH Options
easyJet
PrincipalSoftwareEngineer 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 PrincipalSoftwareEngineer to act as the lead technical person within the relevant product team … resilience and crew experience. Product-led delivery is still relatively new to easyJet, and we’re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software … coding key components. You will also mentor other engineers, drive continuous improvement and foster close collaboration across Product, Data, UX and Quality-Engineering colleagues. By focusing on in-house software-engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the More ❯
luton, bedfordshire, east anglia, united kingdom Hybrid / WFH Options
easyJet
PrincipalSoftwareEngineer 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 PrincipalSoftwareEngineer to act as the lead technical person within the relevant product team … resilience and crew experience. Product-led delivery is still relatively new to easyJet, and we’re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software … coding key components. You will also mentor other engineers, drive continuous improvement and foster close collaboration across Product, Data, UX and Quality-Engineering colleagues. By focusing on in-house software-engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the More ❯
watford, hertfordshire, east anglia, united kingdom Hybrid / WFH Options
easyJet
PrincipalSoftwareEngineer 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 PrincipalSoftwareEngineer to act as the lead technical person within the relevant product team … resilience and crew experience. Product-led delivery is still relatively new to easyJet, and we’re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. JOB PURPOSE Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software … coding key components. You will also mentor other engineers, drive continuous improvement and foster close collaboration across Product, Data, UX and Quality-Engineering colleagues. By focusing on in-house software-engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost JOB ACCOUNTABILITIES Lead and drive the More ❯
Luton, Bedfordshire, United Kingdom Hybrid / WFH Options
PrincipalSoftwareEngineer 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 PrincipalSoftwareEngineer to act as the lead technical person within the relevant product team, setting … resilience and crew experience. Product-led delivery is still relatively new to easyJet, and we re seeking talented engineers who will help us build and mature our in-house software-engineering capability as we continue this journey together. Lead the in-house design, hands-on development, and technical delivery of high-quality, scalable and secure software solutions by … coding key components. You will also mentor other engineers, drive continuous improvement and foster close collaboration across Product, Data, UX and Quality-Engineering colleagues. By focusing on in-house software-engineering excellence this role helps easyJet build the technical capabilities needed to deliver critical operational solutions faster, more securely and at lower cost Lead and drive the design, architecture More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Computer Futures
PrincipalSoftwareEngineer - 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 PrincipalSoftwareEngineer , 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 More ❯
PrincipalSoftwareEngineer Cloud Engineering Scale-up c100k North Scout are partnered with a fast-growing cloud engineering business thats doubled revenues, expanded its technical team, and earned a strong reputation for delivering complex cloud programmes with pace and precision. Theyre looking for a PrincipalSoftwareEngineer to take a leading role across architecture … this person to earn up to 100k with a strong package which includes stock options, private healthcare and loads of smaller benefits. If youre a technically strong, people-focused engineer who enjoys leading from the front and shaping modern cloud solutions, wed love to hear from you. More ❯
PrincipalSoftwareEngineer 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 PrincipalSoftwareEngineer to take a leading … 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 ❯
PrincipalSoftwareEngineer Fully Remote | Permanent | Competitive Salary + Benefits Harrington Starr has partnered with a leading Global Payments Technology company who are seeking to hire a PrincipalSoftwareEngineer to join their senior engineering leadership team. This is a rare opportunity to combine hands-on development with strategic influence, guiding architecture decisions and … direction. Work on complex, high-performance systems at global scale. Career progression in a fast-growing international technology business. Key skills required: 10+ years’ experience in enterprise architecture and software engineering. Proven expertise in .NET with strong SaaS and API platform experience. Hands-on track record designing highly scalable, high-performance systems. Strong leadership, mentoring, and stakeholder management skills. More ❯
Job title: PrincipalSoftwareEngineer Location: Luton – Hybrid Salary: Up to £80k Clearance: SC eligible (Sole UK Nationals only) Duration: Permanent We are hiring for experienced C++ Senior/PrincipalSoftware Engineers on a permanent basis to be based in Luton. This position is for embedded software development in an end-to-end role … focused on electronic warfare systems. As a softwareengineer, you will work within an integrated project team and be responsible for creating high quality and robust designs and code; for fully documenting and recording your work products; keeping them under configuration management and providing plans and progress reports. Work Experience: Languages: C++14 or higher versions Tools: Visual Studio … Essential Skills and Qualifications: Strong programming expertise in C++14, with extensive experience using Visual Studio for development, debugging, and performance optimisation. Proven ability to design, implement, and maintain embedded software on RTOS platforms such as VxWorks, including target integration and validation. Strong grasp of Object-Oriented Design (OOD) principles. Strong unit test skills using tools such as MS Test More ❯
PrincipalSoftwareEngineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior SoftwareEngineer to join its high-performing engineering organisation in London. This is an opportunity to contribute to a platform designed to improve finance globally — with real impact at scale. … first platform. Backed by leading venture capital and impact investors, the organisation is entering a new phase of growth, with engineering at the core. The Opportunity As a Senior Engineer, you will play a key role in designing and delivering scalable, reliable systems that handle significant volumes of real-time data and transactions. You'll collaborate with product, data … and platform teams to deliver high-impact features that directly improve user financial wellbeing. This is a hands-on role for an engineer who values clean architecture, measurable outcomes, and meaningful user impact. What You’ll Do: Design and implement distributed systems that are resilient, scalable, and secure. Own technical decision-making across architecture and implementation — selecting the right More ❯
City of London, London, United Kingdom Hybrid / WFH Options
Austin Werner
PrincipalSoftwareEngineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior SoftwareEngineer to join its high-performing engineering organisation in London. This is an opportunity to contribute to a platform designed to improve finance globally — with real impact at scale. … first platform. Backed by leading venture capital and impact investors, the organisation is entering a new phase of growth, with engineering at the core. The Opportunity As a Senior Engineer, you will play a key role in designing and delivering scalable, reliable systems that handle significant volumes of real-time data and transactions. You'll collaborate with product, data … and platform teams to deliver high-impact features that directly improve user financial wellbeing. This is a hands-on role for an engineer who values clean architecture, measurable outcomes, and meaningful user impact. What You’ll Do: Design and implement distributed systems that are resilient, scalable, and secure. Own technical decision-making across architecture and implementation — selecting the right More ❯
london, south east england, united kingdom Hybrid / WFH Options
Austin Werner
PrincipalSoftwareEngineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior SoftwareEngineer to join its high-performing engineering organisation in London. This is an opportunity to contribute to a platform designed to improve finance globally — with real impact at scale. … first platform. Backed by leading venture capital and impact investors, the organisation is entering a new phase of growth, with engineering at the core. The Opportunity As a Senior Engineer, you will play a key role in designing and delivering scalable, reliable systems that handle significant volumes of real-time data and transactions. You'll collaborate with product, data … and platform teams to deliver high-impact features that directly improve user financial wellbeing. This is a hands-on role for an engineer who values clean architecture, measurable outcomes, and meaningful user impact. What You’ll Do: Design and implement distributed systems that are resilient, scalable, and secure. Own technical decision-making across architecture and implementation — selecting the right More ❯
london (city of london), south east england, united kingdom Hybrid / WFH Options
Austin Werner
PrincipalSoftwareEngineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior SoftwareEngineer to join its high-performing engineering organisation in London. This is an opportunity to contribute to a platform designed to improve finance globally — with real impact at scale. … first platform. Backed by leading venture capital and impact investors, the organisation is entering a new phase of growth, with engineering at the core. The Opportunity As a Senior Engineer, you will play a key role in designing and delivering scalable, reliable systems that handle significant volumes of real-time data and transactions. You'll collaborate with product, data … and platform teams to deliver high-impact features that directly improve user financial wellbeing. This is a hands-on role for an engineer who values clean architecture, measurable outcomes, and meaningful user impact. What You’ll Do: Design and implement distributed systems that are resilient, scalable, and secure. Own technical decision-making across architecture and implementation — selecting the right More ❯
slough, south east england, united kingdom Hybrid / WFH Options
Austin Werner
PrincipalSoftwareEngineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior SoftwareEngineer to join its high-performing engineering organisation in London. This is an opportunity to contribute to a platform designed to improve finance globally — with real impact at scale. … first platform. Backed by leading venture capital and impact investors, the organisation is entering a new phase of growth, with engineering at the core. The Opportunity As a Senior Engineer, you will play a key role in designing and delivering scalable, reliable systems that handle significant volumes of real-time data and transactions. You'll collaborate with product, data … and platform teams to deliver high-impact features that directly improve user financial wellbeing. This is a hands-on role for an engineer who values clean architecture, measurable outcomes, and meaningful user impact. What You’ll Do: Design and implement distributed systems that are resilient, scalable, and secure. Own technical decision-making across architecture and implementation — selecting the right More ❯
