Senior Software Engineer - C# - (Hybrid Remote)

Senior Software Engineer (.NET / C#) | Greenfield Systems Rebuild | Remote | £80,000–£100,000 This is a hands-on senior engineering role with real technical authority. You will be the lead engineer and technical decision-maker on a greenfield rebuild of a mission-critical system, working within a small, senior team and reporting directly to the Head of Technology. NET engineer who has been moving into architecture and wants to own the outcome rather than advise on it, this is worth reading. Lead the technical delivery of a greenfield rebuild of a core business system, covering policy, claims and integration layers. Set and enforce technical standards, own code quality, and conduct structured code reviews across the delivery team. Support the Infrastructure and Data Engineers with cross-cutting technical decisions throughout the build. Post go-live: take on broader enterprise architecture responsibilities including architecture governance, technology strategy and platform evolution planning. 5+ years in senior software engineering or technical lead roles, with strong hands-on .NET / C# delivery. ~ Microsoft SQL Server: schema design, query optimisation, and working knowledge of Always On configuration. ~ Azure infrastructure: practical experience with Azure VM, SQL on Azure and Availability Groups. ~ Prior experience in insurance, financial services or another regulated industry. Familiarity with claims management systems, policy administration platforms or related workflows. Python for automation, tooling or data engineering support. Active use of AI coding tools and a willingness to embed them into day-to-day engineering practice. 80,000–£100,000 depending on experience. ~ Fully remote role with occasional travel to London when needed. ~28 days holiday plus bank holidays. ~ Private Medical Insurance for you and your family. ~ Pension with contributions matched up to 6%. ~ Life assurance. ~