Senior Software Engineer (C# / JavaScript)

Senior Software Developer – UK Government Programme Location: Primarily Remote (Ad hoc travel to Sheffield, Leeds or London – max once per month) Contract Length: Initial 3 months (likely extension) Day Rate: Up to £490 per day (Inside IR35) Start Date: ASAP Overview We are supporting a major UK Government programme seeking an experienced Senior Software Developer (front-end focused) to join an established technical delivery team. This role will play a key part in building and maintaining high-quality, user-centred services within a highly governed public sector environment. This is an excellent opportunity to contribute to a high-impact government initiative with strong potential for contract extension. Key Requirements Proven experience as a Senior Software Developer within UK Government or public sector environments Strong front-end development skills with a focus on JavaScript and TypeScript Hands-on experience with Node.js and Nunjucks Strong commitment to Test-Driven Development (TDD) Active SC clearance required Available to interview and start at short notice Comfortable working remotely with occasional onsite travel (max once per month) Technical Skills Essential: JavaScript TypeScript Node.js Nunjucks TDD Desirable: Ruby API development and integration What You'll Be Doing Developing and maintaining front-end services within a government delivery team Writing clean, tested, and maintainable code to a high standard Collaborating with designers, product managers, and other developers Contributing to technical decisions and best practices across the team Supporting the evolution of user-centred digital services Additional Information Active SC clearance required — candidates without this cannot be considered Candidates must be based in the UK and able to travel occasionally to Sheffield, Leeds or London