Senior .NET Engineer (Contract)

Mexicosenior

Other.Net Engineer

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Quick Summary

Key Responsibilities

Maintain, debug, and enhance a portfolio of legacy desktop and web applications across multiple technology generations Triage and resolve production issues in WinForms-based desktop apps and API/middleware services Collaborate with client…

Requirements Summary

5+ years of professional software development experience Strong proficiency in VB.NET and C# (7.x / 8.x) Hands-on experience with .NET Framework (4.0, 4.5, 4.8) and .NET Core (3.1+) Experience working with or supporting VB6 applications Familiarity…

Technical Tools

angularcsharprest-apis

Working at Tech Holding isn't just a job, it's an opportunity to be a part of something bigger. We are a full-service consulting firm that was founded on the premise of delivering predictable outcomes and high-quality solutions to our clients. Our founders and team members have industry experience and have held senior positions in a wide variety of companies – from emerging startups to large Fortune 50 firms – and we have taken our combined experiences and developed a unique approach that is supported by the principles of deep expertise, integrity, transparency, and dependability.

We are looking for a Senior .NET Engineer for maintaining, fixing, and improving a suite of legacy enterprise applications for a high-profile entertainment industry client. This role requires a seasoned engineer who is comfortable navigating complex, multi-generational codebases spanning VB6 through modern .NET Core, someone who can diagnose issues quickly and deliver pragmatic, stable solutions.

Responsibilities

~1 min read

→Maintain, debug, and enhance a portfolio of legacy desktop and web applications across multiple technology generations
→Triage and resolve production issues in WinForms-based desktop apps and API/middleware services
→Collaborate with client stakeholders and cross-functional engineering teams to understand business requirements
→Refactor and improve legacy code where appropriate without disrupting existing functionality
→Document findings, workarounds, and architectural decisions for knowledge transfer
→Support integrations between legacy systems and modern API layers

Requirements

~1 min read

5+ years of professional software development experience
Strong proficiency in VB.NET and C# (7.x / 8.x)
Hands-on experience with .NET Framework (4.0, 4.5, 4.8) and .NET Core (3.1+)
Experience working with or supporting VB6 applications
Familiarity with WinForms desktop application development
Experience building or maintaining REST APIs and middleware services
Ability to work independently in unstructured, legacy codebases with minimal documentation

Nice to Have

~1 min read

Exposure to Angular (v6, v9, or v12) for understanding front-end integrations
Experience with Outlook Add-In development (.NET Framework)
Background in the entertainment, talent management, or media industry
Prior experience in a nearshore delivery model

Contract

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Tech Holding is proud to be an Equal Opportunity Employer and is committed to fostering a diverse and inclusive workplace. We welcome applicants from all backgrounds and experiences, and we consider qualified applicants without regard to race, color, religion, gender, sexual orientation, gender identity, national origin, disability, veteran status, or any other legally protected characteristic. If you require accommodation in the application process, please contact our HR