https://jobs.co.uk/job/principal-c-full-stack-engineer-harnham-data-analytics-recruitment--0dfc0457-cd72-4dc1-9aa4-67dd45e2c8ee RSS feed for Principal C# Full Stack Engineer at Harnham - Data & Analytics Recruitment. en-gb Fri, 26 Jun 2026 01:39:56 GMT https://jobs.co.uk/job/principal-c-full-stack-engineer-harnham-data-analytics-recruitment--0dfc0457-cd72-4dc1-9aa4-67dd45e2c8ee https://jobs.co.uk/job/principal-c-full-stack-engineer-harnham-data-analytics-recruitment--0dfc0457-cd72-4dc1-9aa4-67dd45e2c8ee Wed, 24 Jun 2026 11:52:32 GMT Location: London | Salary: 130000.00-130000.00 Annual | Type: Permanent | Principal C# Full Stack EngineerFULL ONSITE: London, £130,000 to £160,000This role provides the opportunity to operate at a strategic level while remaining hands-on. You will shape architecture, guide engineering standards, and work on highly complex, performance-critical systems.The Company They are a well-established, data-driven organisation with a strong engineering foundation. Technology is central to their success, and they are investing heavily in scaling their platforms. Their structure is flat, enabling senior engineers to have real influence over technical direction and business outcomes.The Role Define and drive architectural decisions across C# and .NET platforms Lead the delivery of complex, high-performance systems Set engineering standards and best practices across teams Collaborate with leadership on technical strategy and roadmap Mentor senior engineers and support overall team developmentYour Skills and Experience Deep expertise in C# and .NET with a strong engineering track record Experience designing and implementing large-scale distributed systems Strong understanding of performance engineering and optimisation Ability to influence technical strategy and guide ... Permanent