Mechanical Engineering Equation Solver

I'm on the hunt for an expert programmer who can develop a solution-focused tool for the Windows platform. This tool should revolve around solving equations specific to the domain of Mechanical Engineering.

Key Features:
- Interactive User Input: The solution should support a complex level of user interaction, which includes a fully simulated interface for equation input. Please note that the software should not just support typing in the equations.

Skills and Experience:
- Extensive experience in developing engineering software, specifically for Mechanical Engineering
- Proficiency in developing software for the Windows platform
- Strong understanding of user experience principles for interactive and simulated interfaces
- Track record of successful software deployment and maintenance.