Senior .NET Developer Launch & Scale $$$$

Madfish

Madfish

Software Engineering

Brazil · Mexico · Colombia · Argentina · Peru

Posted on May 14, 2026

On behalf of our client, we are looking for a Senior .NET Developer.

Responsibilities:

- Support and enhance existing .NET applications and internal systems

- Help migrate legacy code repositories from TFS to Git

- Contribute to DevOps / CI/CD pipeline setup and modernization

- Work on integrations between internal systems and third-party platforms

- Write, optimize, and troubleshoot MS SQL / T-SQL queries and stored procedures

- Debug application, data, and integration issues

- Document system logic, data flows, and technical decisions

- Collaborate directly with the client’s internal IT/development team

Requirements:

- 5+ years of commercial software development experience

- Strong experience with C# / ASP.NET / .NET

- Strong experience with MS SQL / T-SQL

- Experience with legacy systems and enterprise integrations

- Practical experience with TFS, Git, CI/CD, or DevOps pipelines

- Good understanding of relational databases and multi-tier application architecture

- Strong communication skills and ability to work independently in a client-managed environment

Nice to Have:

- COBOL.NET

- Java / JavaScript

- SQL Reporting Services / SSRS

- Insurance, fintech, or regulated industry experience

- Experience modernizing legacy enterprise systems

Company offers:

- Long-term employment with possibilities for professional growth

- Fully remote work

- Reasonably flexible schedule

- 15 days of paid vacation

- Regular performance reviews