Senior .NET Modernization Engineer

Brazil · On-site · CSA Billable

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About the role

.NETMongoDBC#

Job Title: Senior .NET Modernization Engineer Key Skills: .NET, MongoDB, SaaS platforms, AI Location: Brazil Mode: Remote We at Coforge are hiring Senior .NET Modernization Engineer the following skill set. Key Responsibilities - Modernize legacy .NET Framework 4.8 applications through .NET Standard and ultimately .NET 6. - Upgrade legacy libraries, dependencies, MongoDB drivers, and components while addressing vulnerabilities and CVEs. - Analyze complex dependencies within a large monolithic codebase and define safe, incremental migration approaches. - Build and enhance automated tests and regression coverage to ensure changes do not impact production customers. - Utilize modern AI development tools to accelerate analysis and implementation while maintaining a quality-first approach. Required Skills & Qualifications - Strong hands-on .Net C# expertise. - Proven experience migrating .NET Framework applications to modern .NET. - Experience modernizing SaaS platforms. - Strong understanding of legacy dependencies, libraries, testing, and incremental modernization. - Ability to independently troubleshoot complex systems and make sound architectural and implementation decisions. - Experience with AI in Performance Engineering is highly desirable. Posted On: 29-10-2026 At Coforge, we hire professionals based solely on their skills and do not discriminate based on age, disability, religion, gender, sexual orientation, socioeconomic status, or nationality.