Senior Full-Stack .NET Developer

Company: EPAM Systems
Location: Mexico, Brazil, Colombia
Type: remote
Posted: Oct 3, 2026
Views: 1

✨ AI Summary

EPAM Systems, an IT services provider, is hiring a Senior Full-Stack .NET Developer to modernize legacy applications and enhance security. The role requires 3+ years of experience with C#, .NET Framework, .NET 6/8+, ASP.NET MVC, WCF, and SQL Server, along with OWASP Top 10 remediation skills. Candidates must have B2 English proficiency and be available until 5:00 PM CT, with benefits including healthcare, paid time off, and access to extensive learning resources.

We are seeking a Senior Full-Stack .NET Developer to strengthen security, support legacy applications, and drive modernization across .NET Framework and .NET 6/8+ services. You will remediate vulnerabilities, enhance APIs and data access, and collaborate on reliable releases.

Responsibilities

  • Investigate and remediate application security vulnerabilities, including OWASP Top 10 findings
  • Maintain and modernize legacy .NET Framework applications using ASP.NET MVC and WCF
  • Develop and enhance modern .NET services and RESTful APIs on .NET 6/8+
  • Implement secure data access with SQL Server and ADO.NET
  • Harden applications against SQL injection, XSS, and dependency risks
  • Collaborate with DevOps to support secure CI/CD pipelines and production releases
  • Coordinate work to ensure daily availability until 5:00 PM CT

Requirements

  • 3+ years full-stack .NET development experience
  • Proven project delivery experience modernizing and supporting large legacy codebases
  • Advanced C# and .NET Framework skills with ASP.NET MVC and WCF
  • Strong SQL Server and ADO.NET skills with secure data access practices
  • Practical application security knowledge with OWASP Top 10 remediation experience
  • Upper-Intermediate English proficiency (B2) for daily collaboration

Nice to have

  • OAuth2 implementation experience
  • OpenID Connect (OIDC) knowledge
  • Octopus Deploy experience
  • Strong HTML skills
  • Strong CSS skills

Benefits

  • International projects with top brands
  • Work with global teams of highly skilled, diverse peers
  • Healthcare benefits
  • Employee financial programs
  • Paid time off and sick leave
  • Upskilling, reskilling and certification courses
  • Unlimited access to the LinkedIn Learning library and 22,000+ courses
  • Global career opportunities
  • Volunteer and community involvement opportunities
  • EPAM Employee Groups
  • Award-winning culture recognized by Glassdoor, Newsweek and LinkedIn
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Name: EPAM Systems

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