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

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.