EPAM is a leading general provider of digital platform engineering and development services. We are committed to having a positive impact on our customers, our employees, and our communities. We embrace a dynamic and inclusive culture. Here you will collaborate with multi-national teams, contribute to a myriad of innovative projects that deliver the most creative and cutting-edge solutions, and have an opportunity to continuously learn and grow. No matter where you are located, you will join a dedicated, creative, and diverse community that will help you discover your fullest potential.

We are seeking a Full-Stack .NET Developer to strengthen application security, support legacy systems, and help modernize services across .NET Framework and modern .NET. You will work across backend, database, and frontend tasks.

Responsibilities

• Investigate and remediate application security vulnerabilities including OWASP Top 10 findings
• Analyze SAST/DAST results and implement secure code fixes for SQL injection and XSS risks




• Support and modernize legacy .NET applications using ASP.NET MVC and WCF services
• Build and enhance .NET Web APIs and backend services with secure patterns
• Implement secure database interactions using ADO.NET with Microsoft SQL Server
• Update frontend features and fixes using JavaScript alongside existing UI code
• Coordinate with DevOps to enable secure CI/CD and reliable production deployments
• Document remediation work, modernization changes, and security best practices

Requirements

• Full-stack .NET experience (2+ years) with production applications
• Security remediation experience addressing OWASP Top 10 risks
• Legacy application experience with ASP.NET MVC, WCF, and large codebases
• Modern .NET experience with Web APIs and service-oriented design
• Strong database skills with Microsoft SQL Server and secure data access
• Solid programming skills in JavaScript for frontend integration
• Strong troubleshooting skills with root-cause anal

📌 Full-Stack .NET Developer (Colombia)
🏢 EPAM Systems
📍 Colombia