C# Software Engineer
Snap-on
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Lincolnshire, IL · Posted November 9, 2026
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About the job
Overview
Snap-on Diagnostics is seeking an outstanding C# Software Engineer to work on enhancing and maintaining applications which are critical for business. In this role, you will be part of a global team that designs and develops new features, fixes bugs, and addresses technical debt.
This position requires an excellent team player with great communication skills who demonstrates a passion for delivering software of uncompromising quality to customers.
Essential skills required (5 to 10 years solid experience of the following):
Expertise in C# and .NET Core / .NET 6+ with focus in web development (Web Services and Web API)
Experience using architecture patterns like MVC, MVVM, and DDD
Strong understanding of code refactoring, modularization, and best practices for maintainability and scalability.
Implements and enforces SOLID principles, Clean Architecture, and Deign Patterns (Factory, Repository, Dependency Injection)
Working knowledge of Entity Framework, LINQ, and SQL / SQL Server
Experience in test automation using tools / frameworks (Postman, Selenium, NUnit) and writing clean, testable code.
Practiced in Agile development methodologies including Scrum and Kanban
Able to implement new and improve existing engineering standards, best practices, and processes.
Successful Track Record as a Team Player
Excellent verbal and written communication skills
Self-Motivated and self-organizing
The following skills are not essential, but desirable:
Windows system troubleshooting knowledge using Windows Event Logs, Performance Monitoring, and Windows Debugger (WinDbg).
Hands-on experience with CI/CD pipelines using Jenkins
Understanding of authentication mechanisms including OAuth, AuthLink, and OKTA.
Version control experience with Bitbucket, Git.
Microsoft Azure experience including Azure DevOps – Azure Pipelines is a plus.
***Must reside within driving distance of Lincolnshire, IL** NO RELOCATION EXPENSES ARE OFFERED
This position has an annual salary between $100,000 - $130,000
“Actual compensation may vary based on experience and other factors"
Snap-on is an Equal Opportunity Employer, Minority/Female/Disabled/Veteran