Senior .NET Systems Engineer (MMA202057) – Windows Installer, SSIS & ECU Diagnostic Tools

Compensation & Location

Location: Onsite in Franklin, TN

Pay Range: $52.00 – $59.00 per hour (based on experience, geographic region, and internal equity)

Schedule: Full-time, contract; long-term opportunity

Work Type: 100% Onsite

Benefits: Health, Vision, Dental, Life Insurance, 401k, Continuing and on-demand education

📍 You must be willing to work onsite in Franklin, TN

‼️ ONLY W2 – NO CORP to CORP – NO 3rd Parties

❌ Sponsorship is NOT AVAILABLE for this role

Position Summary

We are seeking a Senior .NET Systems Developer (Desktop & Device Programming) to support the development and maintenance of MEDIC and the Multi-use Tester (MUT) platform — a critical Windows-based ecosystem used by technicians to communicate with vehicle Electronic Control Units (ECUs).

This role focuses heavily on Windows desktop development, hardware-software integration, diagnostic device communication, and enterprise deployment support. The ideal candidate brings strong experience with WPF/WinForms applications, Windows device programming, MSI deployments, and backend SQL technologies within large enterprise environments.

Key Responsibilities

• Develop and maintain Windows desktop applications using WPF (XAML) and WinForms
• Program and optimize communication between Windows applications and diagnostic hardware devices
• Manage MSI package creation and software deployment across dealership environments
• Troubleshoot Windows OS issues, hardware conflicts, driver issues, and device connectivity problems
• Support SQL Server databases, SSIS packages, and technical reporting tools
• Collaborate with Service and IT teams onsite to support evolving vehicle diagnostic technologies
• Build and support backend APIs and responsive web-based applications
• Maintain and enhance data integrations related to Service Manuals, Recalls, and TSB systems

What You’ll Be Working On

• Windows desktop and device programming
• Hardware and diagnostic tool integration
• MSI package deployment and installation management
• Windows system troubleshooting and device communication
• SQL Server, SSIS, and backend application support
• Cross-functional collaboration with IT and Service teams

Required Skills & Experience

• Advanced experience with WPF (XAML) and WinForms
• Strong experience with C#, ASP.NET MVC, and Web API
• Experience interfacing with Windows devices, USB communication, and peripheral connectivity
• Expertise with MSI package creation and Windows Installer technologies
• Strong understanding of Windows System Administration, Registry management, and OS-level troubleshooting
• Experience with Entity Framework, LINQ, and asynchronous programming
• Frontend experience with Angular or React, plus HTML5, CSS3, JavaScript, and Bootstrap
• Strong SQL Server and T-SQL experience
• Experience with SSIS (DTSX) and SSRS reporting tools
• Experience supporting enterprise-level environments

Desired Skills

• Automotive OEM industry experience preferred
• Experience working with vehicle communication protocols or diagnostic hardware
• MCSD (Microsoft Certified Solutions Developer) certification preferred
• 3+ years of Big 4 consulting experience preferred
• Stable work history within large enterprise organizations