Senior .NET Modernization Engineer

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.