201 to 225 of 333 Principal Engineer Jobs

About The Role Deadline for applications: 11:59pm on 31st October 2025 Were looking for a Principal Software Engineer to shape the technical direction of high-profile projects and lead the delivery of modern, scalable software. We use technology to create impactful, human-centred solutions that make a difference to users and organisations. We believe great engineering happens … project risks, helping teams navigate complex technical challenges. About You Professional knowledge and experience Essential Extensive experience in software engineering, with a focus on large-scale, complex systems. Polyglot engineer comfortable working across multiple languages and frameworks (weve used Python, Java, Kotlin, Node.js, C#, JavaScript, Express, React and Next.js to name a few). Passion for learning new technologies More ❯

Overview The Principal Software Engineer will be a member of the Spacelabs R&D engineering team working on and leading the development of Spacelabs Patient Monitoring and Connectivity (PMC) products. This position requires a deep understanding of solid design and development practices and the ability to apply those to Spacelabs product development. The person will be responsible for … performance and cybersecurity needs of our customers. A strong systems approach to product development will be necessary in this role. You will spend your time as a hands-on engineer and a technical leader. Our team plays a key role in building software products and features. You will use a wide range of technologies, programming languages and systems. You More ❯

as the Lower Thames Crossing and the A9 - Tomatin to Moy. We are reinforcing our excellent technical teams in response to these commitments. We are seeking a Senior or Principal Civil Engineer with a focus on drainage design to strengthen our technical teams and lead a team of drainage engineers based in the UK. This is a fantastic … and proposals as well as work to Mott MacDonald's global standards and review Health, Safety and Welfare alongside environmental impact. Candidate specification We are seeking a Senior or Principal Civil Engineer with a focus on drainage design to strengthen our technical teams and lead a team of drainage engineers based in the UK. We are looking for More ❯

Principal Full Stack Engineer - React Native, Next.js & AWS (250628) Ensure you read the information regarding this opportunity thoroughly before making an application. Who we are: Founded in 1995, Consumer Cellular is the first wireless provider unapologetically built for Americans 50+. An approved wireless partner of AARP, Consumer Cellular differentiates itself from the competition with its affordable plans and … unmatched customers service. Message from the Hiring Manager As a Principal Software Engineer on the Customer-Facing Digital Experience team, you will be expected to seamlessly integrate into the team with minimal guidance, demonstrating the ability to hit the ground running from day one. You will lead a team of highly skilled engineers, mentoring and growing the skills More ❯

Principal Software Engineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior Software Engineer 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. The company … 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 ❯

Principal Software Engineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior Software Engineer 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. The company … 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 ❯

Principal Software Engineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior Software Engineer 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. The company … 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 ❯

Principal Software Engineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior Software Engineer 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. The company … 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 ❯

Principal Software Engineer | High-growth, Purpose-Led and A* funded Fintech | Hybrid – London **Python, TypeScript, React** A leading fintech scale-up is hiring a Senior Software Engineer 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. The company … 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 ❯

Job Title: Principal Systems Engineer II Job Location: Remote (CST/EST Time Zones only) Job Description: You will be responsible for systems architecture, design, administration, documentation, configuration, optimization, and troubleshooting across the Client enterprise. The individual will participate in the ongoing support of system assets using current and emerging technologies. With an internal SLA objective of … set priorities independently. Champion standard change management and configuration policies. Demonstrate sound judgment in solving and identifying problems in advance and proposing solutions. This individual must work effectively with Principal to VP level employees within the function, across functions, and external parties. This individual must demonstrate favorable results through regular leadership and influencing others to be successful. Qualifications: Bachelor More ❯

Overview Mesh-AI are seeking an exceptional Principal Software Engineer to lead delivery of exciting engagements within our Energy & Commodities Trading sector. This role demands a unique combination of hands-on technical excellence and deep domain expertise in trading environments. You will architect and implement critical solutions that power real-time trading decisions, while mentoring teams and driving More ❯

Westlakes Recruit are currently recruiting for a Principal Systems Engineer to be engaged on a permanent basis, based in Bristol, London, Reading, Silchester and Manchester. Your Purpose: Provide consultancy to client project and engineering managers. Lead the use of best practice techniques and tools on client and internal projects. Champion a Model Based Systems Engineering (MBSE) approach to More ❯

JOB TITLE: PRINCIPAL SYSTEMS ENGINEER (MBSE) LOCATION: SPRINGFIELD, VA RATE RANGE: .00 PER HOUR JOB#: REQUIRED EXPERIENCE:Practical experience applying Model-Based Systems Engineering (MBSE) principles, including system modeling with Cameo, or equivalent tools. Familiarity with Digital Engineering practices and tool chains to enhance design, integration, and test workflows. Experience with high level programming languages (e.g. Python). … and Contractor). Active and transferable TS/SCI with CI Polygraph U.S. government-issued security clearance is required prior to start date. U.S. citizenship is required. JOB DESCRIPTION: Principal Systems Engineer (MBSE) to provide enterprise-wide systems engineering and integration support within the Intelligence Community. The ideal candidate will apply Model-Based Systems Engineering (MBSE) and Digital More ❯

sustain optimized product lines across the sector while providing a decisive advantage to the warfighter. Come be a part of our mission. We have an opening for either a Principal Full-Stack (Front-End Focused) Software Engineer or Senior Principal Full-Stack (Front-End Focused) Software Engineer to join our Redondo Beach, CA, Software and Controls … professional development and training, as well as engagement and inclusion activities such as lunch-n-learns, campus events, and leadership mixers. As a Full-Stack (Front-End Focused) Software Engineer, you'll be joining an existing on-contract classified portfolio called Swordfish supporting a critical national security mission that is both in Operations and major development. The program team … or help the team be more productive or produce a higher quality product. This requisition may be filled at a higher grade based on qualifications listed below. Basic Qualifications: Principal Full-Stack (Front-End Focused) Software Engineer: Bachelor's degree with 5 years of relevant experience; Master's degree with 3 years of relevant experience; PhD with More ❯

is a beautiful, surprising and vibrant place to work. We might not be for everyone, but we could be perfect for you. About the job We're looking for Principal Full Stack Engineers to join us Our technology teams combine a diverse set of technologies to meet the needs of our users, handling millions of requests a day across … and knowledge sharing are at the core of what we do. Regular pair programming, code reviews, and stand-ups ensure that our engineers stay connected and aligned. As a Principal Engineer, you'll play a visible, strategic role in driving system design and architecture decisions, mentoring team members, and helping our teams deliver high-quality solutions at scale. More ❯

an environment for every teammate that’s welcoming, respectful and inclusive, with great opportunity for professional growth. Find your future with us. The Boeing Company is currently seeking a Principal Software Engineer–Systems to support our Advanced Design and Prototype Solutions (ADaPS) team located in Huntsville, Alabama. This position will focus on supporting the Boeing Defense Services (BDS … in SW test, automated deployment, introduction of robotics, and the possible use of AI concepts. These responsibilities will be performed on site. Position Responsibilities: The IAMD Programs SW Lead Engineer will be responsible for creating and leading implementation of architecture roadmaps for the factory and electronics (embedded) software products and represent the SW team as part of the Chief … Engineer’s leadership team. Directs software system-level analyses to identify risk, issues and opportunities; consults on integration and deployment of mitigation actions throughout the software lifecycle. Also, directs monitoring and reviewing test completion, verification processes and issue resolution for software systems. Coordinate and provide direction to technical software leaders from each program who are themselves senior engineers. This More ❯

Are you an experienced Principal Embedded Software Engineer seeking a new challenge in Cambridge? This role offers the chance to elevate your career while working on cutting-edge projects in a dynamic and innovative environment. As a Principal Embedded Software Engineer, you will be at the forefront of technological advancements, directly contributing to the development and More ❯

Are you an experienced Principal Embedded Software Engineer seeking a new challenge in Cambridge? This role offers the chance to elevate your career while working on cutting-edge projects in a dynamic and innovative environment. As a Principal Embedded Software Engineer, you will be at the forefront of technological advancements, directly contributing to the development and More ❯

Principal Consultant Integrity Engineer (Pressure Systems) PSSR Conventional Power and Clean Energy Industries Job type: Full time Location:Risktec Derby Job type: Full time Location: RisktecDerby (UK) Salary & Benefits: Competitive Salary, Profit Share, Private medical insurance (BUPA) & Permanent Health insurance, (income protection scheme), Life assurance, Pension (7.5 % company contribution) see below for more detail. Expected duration: Permanent Risktec … at TUV Rheinland UK is seeking Principal Integrity Engineers (permanent role) with specific pressure systems knowledge to take up senior positions in its expanding Asset Integrity Management team based in Derby, UK. The successful candidates will play a key role in leading and delivering solutions for our clients. The majority of the teams activities are focussed on the Conventional … visits, both within the UK and abroad, to meet project requirements. Required qualifications and experience : BEng/MEng degree or equivalent in engineering related topic preferably mechanical engineering. Chartered Engineer or working towards professional registration is desirable. Minimum of 10 years of relevant experience. Rewards: A competitive package of salary and benefits is offered for permanent staff this includes More ❯

Our client, a leader in the defence and security sector, is seeking a Principal Software Engineer to join their team in Berkshire. This is a permanent role where you will provide technical leadership within their Cyber Unit. Key Responsibilities: Architect, specify requirements, design, implement, and test embedded and/or application software to ensure high quality and timely More ❯

Our client, a leader in the defence and security sector, is seeking a Principal Software Engineer to join their team in Berkshire. This is a permanent role where you will provide technical leadership within their Cyber Unit. Key Responsibilities: Architect, specify requirements, design, implement, and test embedded and/or application software to ensure high quality and timely More ❯

As a Future Products Principal Systems Engineer within the newly formed Future Products department; part of Missile Design UK: Emerging Portfolio & Capability function, you will be assigned to take on a variety of roles in support of MBDA's Vision 2040. Salary : Circa £55,000 depending on experience Dynamic (hybrid) working : 3-4 days per week on-site More ❯

Lead C#/Principal C# Software Engineer, SaaS, Hands-on engineering role with proven ability to mentor, technically develop a team, take the technical leadership, etc. , Full stack but heavily backend focused. Cloud skills also required (ideally AWS but Azure fine). Home Based c £ 70000 - 80000 + benefits. This role requires a strong understanding and commercial experience … and principles. My client is a software product company that build an innovative SaaS product. As they continue to grow they are looking for a hands-on Lead Software Engineer with a combination of strong C#/.net technical skills and proven tech leadership/management skills that will include coaching, mentoring, team collaboration, etc, etc. Utilising agile methodologies … Lead level. This is a great opportunity to join a SaaS product company as it continues to grow and push boundaries. If you are a skilled C# lead software engineer who has worked in a large complex environment please send your CV for a full brief. The role is home based with one day a month in the office. More ❯

We are recruiting for a Principal Infrastructure Engineer to join our clients Birmingham office on a fulltime hybrid basis. The role is within a team of team of drainage and development infrastructure specialists. This is a fantastic opportunity to develop and grow your career in the development team. If you are looking for a new role that supports More ❯

a strategic shift to a fully SaaS model, were entering an exciting phase of rapid expansion and innovation. About the Role Were looking for a motivated and experienced Software Engineer to join our growing team. Youll be involved in designing, developing, and maintaining cutting-edge software solutions in a collaborative and forward-thinking environment. This role offers the opportunity More ❯