We are seeking a Senior Full-Stack .NET Developer to strengthen and modernize enterprise applications by remediating security vulnerabilities and supporting legacy systems while building modern .NET services. You will work across backend, data, and frontend layers and partner with DevOps to deliver secure releases.ResponsibilitiesInvestigate and remediate security vulnerabilities, including OWASP Top 10 findingsHarden applications against SQL injection, XSS, and dependency risksMaintain and modernize legacy .NET applications using ASP.NET MVC and WCFBuild and enhance ASP.NET Core Web APIs and modern .NET servicesImplement secure data access with Microsoft SQL Server and ADO.NETDevelop and refine frontend features using JavaScript and related web technologiesCollaborate with DevOps to support secure CI/CD and production deploymentsCoordinate work to ensure daily availability until 5:00 PM CTRequirements3+ years full-stack .NET development experienceStrong .NET security remediation experience with OWASP Top 10Advanced troubleshooting skills for large legacy codebasesProven project ownership across maintenance and modernization effortsSolid C# skills with .NET Framework and modern .NET (6/8+)Hands-on ASP.NET MVC, WCF,
and ADO.NET experienceStrong SQL Server skills with secure data access practicesPractical JavaScript skills for frontend integrationUpper-Intermediate English proficiency (B2)Nice to haveOAuth2 knowledgeOpenID Connect knowledgeOctopus Deploy experienceHTML skillsCSS skillsWe offerInternational projects with top brandsWork with general teams of highly skilled, diverse peersHealthcare benefitsEmployee financial programsPaid time off and sick leaveUpskilling, reskilling and certification coursesUnlimited access to the LinkedIn Learning library and 22,000+ coursesGlobal career opportunitiesVolunteer and community involvement opportunitiesEPAM Employee GroupsAward-winning culture recognized by Glassdoor, Newsweek and LinkedInEPAM 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.
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