Senior Fullstack Developer/Team Lead Role (C#, Blazor, Entity Framework Core, SQLite) (Remote)

SUMMARY:
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POSITION INFO:
ENVIRONMENT: Our client is a leading UK-based esports and sim racing company specializing in tailored car setups, professional coaching, and advanced telemetry solutions. Operating within the internet software and services sector, the company leverages a growing, innovative team to deliver high-quality racing tools and resources designed to support drivers of all skill levels.  They are seeking a Senior Full Stack Developer \/ Team Lead to join their fully remote team and take ownership of two key products. The first is an established desktop application built using WPF, C#, Blazor, Entity Framework Core, and SQLite. The second is a rapidly expanding cloud platform developed with ASP.NET Core, C#, Blazor, and Entity Framework Core, utilizing Microsoft SQL Server and hosted on a cloud-based infrastructure. This role offers the opportunity to lead technical development, drive product innovation, and mentor a growing engineering team while contributing to the continued success of both platforms.   DUTIES: •       Lead development across the WPF + Blazor desktop application and the cloud platform ( ASP.NET Core, Blazor, EF Core, MSSQL). •       Develop new features, fix bugs, and maintain a clean, high-performance codebase across both products. •       Mentor and support team members: unblock issues, review code, raise the technical bar, and guide the team on leveraging AI coding tools effectively. •       Manage ticket intake: triage, prioritise, and assign incoming bugs and feature requests to the team. •       Communicate directly with customers on ticket status, resolutions, and expectations. •       Work directly with the CTO on technical direction, goals, and delivery. •       Implement backend logic and business processes. •       Design and manage database schemas across SQLite (desktop) and MSSQL (cloud). •       Write and maintain database migrations. •       Optimise database queries for performance at scale. •       Enhance and maintain CI\/CD pipelines for both desktop and cloud deployments. •       Improve performance, reliability, and overall user experience. •       Contribute across the full technology stack (frontend, backend, database, and infrastructure).   REQUIREMENTS: •       Senior-level experience as a Full Stack Developer, with prior team lead or mentorship experience. •       Strong proficiency in C#, ASP.NET Core, Blazor, and Entity Framework Core. •       Proficiency in AI-assisted coding: Strong experience leveraging advanced AI development tools, specifically Claude Code—to accelerate development cycles, refactor efficiently, and improve codebase quality. •       Solid experience with both SQLite and Microsoft SQL Server, including schema design, migrations, and query optimisation. •       Experience building and operating cloud-hosted applications. •       Proven ability to triage, prioritise, and delegate work across a development team. •       Strong written and verbal communication skills, including customer-facing communication on issues and resolutions. •       Experience with CI\/CD and performance optimisation.   ATTRIBUTES: •       Ability to work remotely and manage your own time and the team's workload autonomously. •       Strong problem-solving skills and attention to code quality. •       Passion for clean, maintainable, and efficient code. •       Bonus: Interest or passion for sim racing or motorsport.