Staff Mechanical Engineer, Power Conversion Systems

Trystar; Faribault (MN); On-site; USD 120,000 - 160,000; Full time

Job summary

Trystar is seeking a Staff Mechanical Engineer to lead design efforts in Power Conversion Solutions. This role requires in-person presence in Burnsville, MN or other listed sites and will drive mechanical concepts from concept to production across multiple product lines.

You will own complete mechanical designs, coordinate thermal and structural analyses, manage BOMs, mentor engineers, and collaborate with R&D, manufacturing, and QA to deliver robust, manufacturable power conversion systems on

Qualifications

• Bachelor's degree in Mechanical Engineering required.
• Minimum seven (7) years of mechanical design experience, preferably in power electronics packaging.
• Experience with power electronic system design (electrical enclosures, panel layout, seismic considerations, heat management).
• Proficiency with SolidWorks and ERP systems; familiarity with standards ASME/NEMA/UL/IEC.
• Willingness to travel up to 20% within USA/Canada.

Responsibilities

• Perform complete mechanical design, including layout, part/assembly modeling, drawings, and mechanical requirements definition.
• Support advanced engineering analysis, including system-level thermal analysis, FEA, and CFD simulations.
• Define, design, prototype, validate, and support mechanical systems for Rack-Mounted equipment, modular power devices, UPSs, Rectifiers, Inverters, etc.
• Lead mechanical design reviews and provide technical guidance across multiple product lines at Trystar sites.
• Work with hardware design engineers to develop PCB mounting and packaging requirements.
• Develop detailed 3D CAD models and drawings, including complex surfaces, routed assemblies, and mechanical enclosures.
• Collaborate with cross-functional teams (QA, Manufacturing, Assembly) to improve product designs, documentation, and manufacturability.
• Design and validate assembly and test fixtures; support prototype builds and production launches.
• Manage BOMs, documentation for new and existing parts, using database tools (e.g., Empower, PDM, Epicor).
• Answer vendor questions regarding mechanical parts (change requests, obsolescence, substitution).
• Define and document mechanical requirements and best practices for enclosures of power conversion systems.
• Contribute to efforts to standardize design practices across sites.
• Provide technical mentorship and guidance to design engineers, test technicians, fabrication, and assembly personnel.

Skills

Mechanical design

Power electronics packaging

Finite Element Analysis

CAD (SolidWorks)

Thermal management

Engineering documentation

Cross-functional collaboration

Strong communication

Travel up to 20%

Education

Bachelor's degree in Mechanical Engineering or equivalent

Tools

SolidWorks

ERP systems (Epicor)

PDM

Flow Simulation

ANSYS

COMSOL

Job description

Trystar is seeking a Staff Mechanical Engineer to lead design efforts in Power Conversion Solutions. This role requires in-person presence in Burnsville, MN or other listed sites and will drive mechanical concepts from concept to production across multiple product lines.

You will own complete mechanical designs, coordinate thermal and structural analyses, manage BOMs, mentor engineers, and collaborate with R&D, manufacturing, and QA to deliver robust, manufacturable power conversion systems on