https://jobs.co.uk/job/principal-software-engineer-arm--662a187a-7b38-4219-8c69-04cad7e610ea RSS feed for Principal Software Engineer at ARM. en-gb Mon, 25 May 2026 01:06:39 GMT https://jobs.co.uk/job/principal-software-engineer-arm--662a187a-7b38-4219-8c69-04cad7e610ea https://jobs.co.uk/job/principal-software-engineer-arm--662a187a-7b38-4219-8c69-04cad7e610ea Sun, 17 May 2026 23:00:00 GMT Location: Luton | Salary: Negotiable | Type: Contract | Principal Software Engineer Luton 12-Month Contract Paying up to -79p/h (Inside IR35) Please note - due to the nature of the work, you will need to hold or be eligible to obtain a high level of UK Security clearance - please only apply if suitable Key Responsibilities: Develop robust applications using C# .NET within a Windows environment. Take ownership of complex tasks across the full software lifecycle-from requirements to integration, testing and delivery. Apply object-oriented design principles and verification/validation techniques. Collaborate with a skilled team while maintaining independence in your work. Required Skillset: Proven experience in C# .NET development including Web Based applications. Strong understanding of object-oriented design and software development methodologies. Experience across the full software lifecycle including automated testing frameworks and practices. Experience of Continuous Integration / Continuous Delivery (CI / CD) practices. Ability to work independently and deliver high-quality solutions with minimal supervision. Experience with Agile methodologies (Scrum, Kanban) and microservices architecture. ... Contract