Senior Full-Stack .NET Developer

EPAM is a leading global 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 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
We offer
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
EPAM is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, sexual orientation, gender identity or expression, disability, protected veteran status, or any other characteristic protected by applicable law.

Work arrangement
Yes