Senior .NET Engineer

Responsibilities

• Own the design, development, testing, and release of features across customer-facing .NET applications and the services behind them.
• Cover the platform during your hours. Take production issues from first report to resolved root cause, including the ones that need a decision before anyone in the Americas is awake.
• Modernize as you go. Parts of this platform predate current .NET, and moving them forward without interrupting a live marketplace is a core part of the job rather than a side project.
• Design and build APIs that partners, dealers, and internal systems depend on.
• Work on SQL Server performance and data design, including query and schema work on systems under real load.
• Hand off cleanly to and from the platform lead in North America, with the written context that makes continuous coverage possible.
• Review code and raise the standard of what ships.
• Translate business requirements from product and marketing partners into technical designs, and push back when the requirement and the system are pointing in different directions.
• Working with AI
• Every developer here has Claude and GitHub Copilot, and they are part of how the work gets done rather than an optional extra. What matters to us is judgment: knowing which tasks to hand to a model and which to write yourself, giving it enough context to return something usable, and reviewing what comes back as…

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