Senior .NET Developer

Better Impact Inc.

Senior .NET Developer migrating Volunteer Impact backend from VB.NET/.NET Framework to C#/.NET 10. Leading technical initiatives in a growing organization focused on volunteerism and community support.

Posted 7/14/2026full-timeRemote • North Carolina • 🇺🇸 United StatesSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates extensive expertise in C#/.NET migration strategies, particularly from .NET Framework to .NET 10, while ensuring minimal downtime and preserving existing functionality. Capable of enhancing CI/CD pipelines and managing legacy dependencies effectively within a production environment.

Highest-signal resume keywords

C#/.NET ExperienceMigration of Production SystemsNHibernate ExpertiseCI/CD Pipeline ImprovementLegacy Dependency Replacement

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

C#.NET Framework.NET 10NHibernateASP.NET MVCCI/CDSSRS MigrationDependency InjectionCustom Security FrameworksPerformance Regression Testing

Soft Skills

Technical Decision-MakingDebuggingCollaboration

Industry Keywords

Production MonolithIncremental MigrationQuality EngineeringLegacy System ModernizationReporting Platforms

Tech Stack

Tools & technologies

ASP.NET.NET

About the role

Key responsibilities & impact

Lead the migration of the Volunteer Impact backend from VB.NET/.NET Framework to C#/.NET 10, defining the migration approach and executing it incrementally against a live production system
Modernize a custom security framework (70+ custom attributes) into something that works on the new stack, with zero authorization bypasses
Strengthen the existing CI/CD pipeline and, with our quality engineering function, wire in the gates that catch functional and performance regressions before they reach production
Ship migrated areas to production independently and incrementally while the legacy application keeps running
Become the second engineer who can independently cut, validate, and deploy a production release
Identify, evaluate, and replace legacy dependencies that don’t have a path forward to modern .NET, without introducing functional or performance regressions
Make the technical sequencing calls: which areas migrate first, which dependencies get replaced when, and where automated conversion is viable vs. manual rewrite
Lay the foundation for the team to grow by modernizing the stack to one that any C# developer can contribute to

Requirements

What you’ll need

8+ years of professional C#/.NET experience, with real depth in the framework, not just the latest version
You’ve personally led or been the technical anchor on a .NET Framework-to-.NET Core (or later) migration of a large, production monolith serving paying customers
You’ve migrated a production system incrementally with minimal downtime and can articulate the approach you’d take here
Deep NHibernate experience is strongly preferred. We’re keeping NHibernate to reduce migration risk, so the value is understanding a mature data access layer, preserving existing behaviour, and knowing where modernization helps without unnecessary churn.
You’ve replaced legacy dependencies in production: DI containers, bundling frameworks, service hosting, and unsupported third-party libraries. You know how to swap critical components while the plane is flying.
Hands-on experience with legacy .NET ecosystem components: ASP.NET MVC-to-Core routing, custom security frameworks, and the kinds of dependencies that don’t have a clean upgrade path
Familiarity with migrating SSRS reports to a modern reporting platform is a benefit. We have a significant reporting footprint, so preserving report behaviour during that move would be valuable.
You’ve improved CI/CD pipelines for .NET applications and know how to work with a quality function to build gates that catch functional and performance regressions early
You’re comfortable in a small core team with shared DevOps and DBA support available, and a dedicated quality engineering partner who owns the regression gate across our platforms. You can make sound technical decisions, debug hands-on, and know when to pull the right support in.
VB.NET familiarity is a bonus, not a requirement. The job is the conversion, not maintaining VB.NET.

Benefits

Comp & perks

Medical, dental & vision insurance (after 90 days)
401(k) (after 90 days)
Unlimited vacation + 9 paid holidays
Paid parental leave
Competitive comp package