Senior .NET Backend Developer (Legacy Platform)

At Niuro, we're hiring a Senior .NET Backend Developer for a US tax-tech company with a mature platform that needs to stay stable and keep evolving. Full-time contractor role, 100% remote from Latin America, paid in USD.

What you'll do

• Work hands-on in a large .NET Framework codebase with sensitive taxpayer data, in a regulated environment
• Resolve production incidents
• Optimize data access and SQL performance
• Ship safe incremental improvements together with the legacy platform team, especially during tax season

Must-have

• 5+ recent years with C# and .NET, hands-on .NET Framework
• Dapper and Entity Framework, and judgment on when to use each
• Strong SQL and production performance troubleshooting
• AWS experience
• Confidence changing large, non-modular codebases safely
• C1 English, written and spoken

Apply here: https://app.niuro.io/source/m7VkQK4e?ref=ps_kt_PUaKmfFuqyMC-bGlv2yG_orz1L9FLWQxnwPmdXi4&utm_source=wellfound&utm_medium=job-board&utm_campaign=senior-net-backend-developer-legacy-platform&utm_content=wellfound-20261111