Sr .NET Developer

Job Description

About the Company

Our client is looking for a hands-on .NET developer to help modernize and consolidate a large portfolio of legacy business applications. This is an individual contributor role focused on building and refactoring code. You will work in a mature C# and SQL Server environment, untangle applications that have grown over many years, and use AI-assisted coding tools to move faster and raise the quality of the codebase.

Responsibilities

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• Build, enhance, and support C# and .NET applications used across business and manufacturing operations
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• Refactor and consolidate legacy applications, reducing duplicate functionality and simplifying integrations between systems
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• Work through existing code with limited documentation, map dependencies, and document how applications work
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• Write and tune SQL Server queries, stored procedures, and data integrations, including data sourced from the company ERP
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• Use AI-assisted coding tools such as GitHub Copilot, Claude Code, or Cursor in daily development, and help set good practices for the team
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• Take part in design and code reviews, and contribute to coding standards, testing, and CI/CD
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• Work with business users and the IT team to gather requirements and turn requests into working solutions
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• Collaborate with outside development partners on shared codebases and knowledge transfer
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Experience

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• Bachelor's degree in computer science, software engineering, IT, or a related field, or equivalent experience
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• 5+ years of professional software development with C# and .NET, including both .NET Framework and modern .NET
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• Strong SQL Server skills, including T-SQL, stored procedures, and performance tuning
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• Experience with ASP.NET MVC or ASP.NET Core, Web API, REST services, Git, and CI/CD pipelines
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• Hands-on experience modernizing, rewriting, or consolidating legacy applications
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• Regular use of AI-assisted coding tools in professional development work
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• Exposure to ERP integrations (Infor M3 a plus), Power BI, Snowflake, or Azure is a plus
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MMD Services Inc. is an equal opportunity employer. All applicants are considered for all positions without regard to race, religion, color, sex, gender, sexual orientation, pregnancy, age, national origin, ancestry, physical/mental disability, medical condition, military/veteran status, genetic information, marital status, ethnicity, alienage, or any other protected classification, in accordance with applicable federal, state, and local laws.