Senior Mechanical Engineer, Power Conversion Systems

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

Job summary

Trystar seeks a Staff Mechanical Engineer to lead mechanical design for power conversion solutions. Based primarily in Burnsville, MN, with options for other locations, this role requires in-person presence and proven experience in mechanical design for electrical equipment including racks, enclosures, and UPS systems.

The candidate will perform advanced analyses (thermal, FEA/CFD), mentor engineers, and collaborate with R&D, manufacturing, and QA to ensure rapid, reliable product development

Qualifications

• Bachelor's degree in Mechanical Engineering or equivalent.
• 7+ years of mechanical design experience, preferably in power electronics packaging.
• Experience with electrical enclosures, panel layout, heat management, seismic considerations.
• Proficient with SolidWorks or equivalent CAD and ERP systems.
• Knowledge of ASME, NEMA, UL, IEC codes in mechanical engineering.
• Ability to generate BOMs and drawings for sheet metal, plastic, extruded parts.
• Willingness to travel up to 20% in USA/Canada.

Responsibilities

• Perform complete mechanical design including layout, part/assembly modeling, drawings, and mechanical requirements definition.
• Support thermal analysis, FEA, and CFD simulations.
• Define, design, prototype, validate, and support mechanical systems for products such as rack-mounted equipment, modular power devices, UPSs, rectifiers, inverters.
• 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 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

3D CAD

Thermal analysis

FEA/CFD

Power electronics packaging

Mentorship

Vendor support

Documentation

Education

Bachelor's degree in Mechanical Engineering

Tools

SolidWorks

ERP systems

Empower

PDM

Epicor

Job description

Trystar seeks a Staff Mechanical Engineer to lead mechanical design for power conversion solutions. Based primarily in Burnsville, MN, with options for other locations, this role requires in-person presence and proven experience in mechanical design for electrical equipment including racks, enclosures, and UPS systems.

The candidate will perform advanced analyses (thermal, FEA/CFD), mentor engineers, and collaborate with R&D, manufacturing, and QA to ensure rapid, reliable product development