Senior .NET Backend — Legacy Platform (Remote & Growth)

Niuro; United States; Remote; USD 120,000 - 180,000; Full time

Job summary

Niuro is seeking a senior backend developer to maintain and extend a large .NET Framework backend in a fully remote environment. The role demands hands-on C#/.NET experience, strong SQL skills, and production troubleshooting expertise to ensure system stability and high performance.

You will collaborate daily in English with the legacy team lead and engineers, analyze legacy code, and implement safe, incremental changes while prioritizing reliability across the platform.

Qualifications

• 5+ years of recent C# and .NET experience, including hands-on .NET Framework experience.
• C1 English level or higher, with confidence in daily spoken communication.
• AWS experience.
• Ability to understand, modify, and maintain large, non-modular legacy codebases safely.
• Hands-on experience with Production Troubleshooting, Legacy Code Maintenance.

Responsibilities

• Maintain and extend a large, mature .NET Framework backend while preserving system stability.
• Diagnose and resolve production incidents, prioritizing critical issues during tax season.
• Optimize SQL queries and data access using Dapper and Entity Framework.
• Analyze legacy, non-modular code and implement safe, incremental changes.
• Collaborate daily with the legacy team lead and engineers in English.
• Monitor reliability and performance, and contribute to practical improvements across the platform.

Skills

C#

Dapper

Entity Framework

SQL

AWS

Production Troubleshooting

Legacy Code Maintenance

Job description

Niuro is seeking a senior backend developer to maintain and extend a large .NET Framework backend in a fully remote environment. The role demands hands-on C#/.NET experience, strong SQL skills, and production troubleshooting expertise to ensure system stability and high performance.

You will collaborate daily in English with the legacy team lead and engineers, analyze legacy code, and implement safe, incremental changes while prioritizing reliability across the platform.