Senior .NET Backend Developer (Legacy) · Remote LATAM

Findjobit; United States; Remote; USD 33,000 - 39,000; Full time

Job summary

Findjobit is a US tax-tech company seeking a seasoned .NET developer to keep a mature platform stable and evolving. You will work hands-on in a large .NET Framework codebase handling sensitive taxpayer data within a regulated environment.

You will resolve production incidents, optimize data access and SQL performance, and ship safe incremental improvements with the legacy platform team, especially during tax season.

Qualifications

• 5+ years with C# and .NET (hands-on .NET Framework)
• Experience with Dapper and Entity Framework and when to use each
• Strong SQL and production performance troubleshooting
• AWS experience
• Ability to safely change large, non-modular codebases
• English language at C1 level

Responsibilities

• Resolve production incidents
• Optimize data access and SQL performance
• Ship safe incremental improvements with the legacy platform team, especially during tax season

Skills

C# / .NET

Dapper & EF

SQL troubleshooting

AWS

Safe codebase changes

English (C1)

Job description

Join a US tax-tech company and keep its mature platform stable and evolving. You'll work hands‑on in a large .NET Framework codebase with sensitive taxpayer data, in a regulated environment.

What you'll do

• 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

Full‑time · contractor · 100% remote from LATAM · USD 3,000–3,500/month.