Senior .NET Full-Stack Dev - Security & Modernization

EPAM Systems; México; Remote; MXN 700,000 - 1,000,000; Full time

Benefits offered by this job

Healthcare benefits

Paid time off and sick leave

Upskilling, reskilling and certificate

LinkedIn Learning access

Job summary

EPAM Systems is seeking a Senior Full-Stack .NET Developer to remediate security vulnerabilities in legacy systems while delivering modern .NET 6/8+ services. You will work across ASP.NET Web Forms, MVC, WCF, and ASMX codebases and collaborate with global teams on secure deployments.

You should bring 3+ years of full-stack .NET experience, strong C#, SQL Server, and REST API skills, plus English at B2+. If you enjoy tackling large codebases and modernizing applications, join us.

Qualifications

• 3+ years of full-stack .NET development experience.
• Expertise in C#, .NET Framework, and SQL Server.
• Proficiency with ASP.NET Web Forms and MVC.
• Experience with .NET 6/8+, ASP.NET Core, and REST APIs.
• English proficiency at Upper-Intermediate level (B2) or higher.

Responsibilities

• Investigate and remediate application security vulnerabilities, including OWASP Top 10.
• Maintain and modernize legacy ASP.NET Web Forms, MVC, WCF, and ASMX applications.
• Develop ASP.NET Core Web APIs and modern .NET services.
• Work with SQL Server, ADO.NET, EF Core/Dapper for secure data access.
• Support frontend development with HTML, CSS, JavaScript/TypeScript, jQuery, and modern SPA frameworks.
• Collaborate with DevOps to support secure CI/CD and production deployments.

Skills

C#

ASP.NET

REST APIs

SQL Server

Frontend development

OWASP Top 10

Legacy code handling

Tools

TeamCity

Octopus Deploy

IIS

Job description

EPAM Systems is seeking a Senior Full-Stack .NET Developer to remediate security vulnerabilities in legacy systems while delivering modern .NET 6/8+ services. You will work across ASP.NET Web Forms, MVC, WCF, and ASMX codebases and collaborate with global teams on secure deployments.

You should bring 3+ years of full-stack .NET experience, strong C#, SQL Server, and REST API skills, plus English at B2+. If you enjoy tackling large codebases and modernizing applications, join us.