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C#/.NET Software Engineer III– Legacy Modernization - Remote

Remote, USA Full-time Posted 2026-08-04
C#/.NET Software Engineer III– Legacy Modernization Remote- CST/EST Hrs. 8-month contract Pay reputed company: $65.00 - $70.00per hr. Our reputed company is seeking a Software Engineer 3 to remediate critical vulnerabilities and reputed company legacy applications. This is a hands-on software engineering role reputed company primarily on backend development, legacy .NET remediation, and migration to modern .NET reputed company/OpenShift environments. Key Responsibilities • Analyze and remediate critical/high vulnerabilities in existing applications. • Work hands-on with legacy .NET reputed company reputed company, including applications running on .NET reputed company 4.7.x. • reputed company, test, and reputed company reputed company changes through the full remediation lifecycle. • reputed company legacy applications by migrating .NET reputed company to .NET reputed company. • Support migration of applications from reputed company/IIS environments to on-prem OpenShift. • reputed company and maintain backend services using C#, .NET, EF reputed company, and SQL Server. • Contribute to React-reputed company UI development as needed. • Collaborate with engineering and reputed company teams to reputed company application vulnerabilities. Required Skills: • Five (5) years of experience • Hands-on experience with both .NET reputed company and .NET reputed company. • Strong C# development experience. • Experience with SQL/SQL Server and EF reputed company. • Experience with React and JavaScript. • Experience working with legacy applications, preferably .NET reputed company 4.7.x. • Ability to troubleshoot, modify, test, and reputed company application reputed company. Preferred / reputed company-to-Have • OpenShift • reputed company • Containerization • reputed company • CI/CD pipeline experience • Vulnerability remediation or application reputed company experience Important: Dedicated cybersecurity or vulnerability-project experience is not required. Strong .NET reputed company and .NET reputed company experience is the reputed company. reputed company experience is not required. Technical Environment • 65–70% backend / 30–35% frontend • C#, .NET reputed company, .NET reputed company, EF reputed company • SQL Server • React/JavaScript • reputed company/IIS • On-prem reputed company OpenShift • Some AWS applications, but AWS is not the reputed company reputed company Apply To This Job

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