Staff Mechanical Engineer

About the role

Trystar, a leader in power inverters, distribution equipment, and related services, is seeking a Staff Mechanical Engineer to lead design efforts in Power Conversion Solutions. The role involves designing and coordinating large‑scale engineering projects, creating new designs, and advising on existing projects. The position is preferably based in Burnsville, MN; Houston, TX; Charlotte, NC; or Merrimack, NH and requires in‑person presence in the office. The engineer will work closely with R&D, internal, and external stakeholders to deliver timely, value‑added solutions while upholding Trystar’s guiding principles of safety, integrity, customer focus, speed, teamwork, change, and enjoyment.

Responsibilities

• Perform complete mechanical design, including layout, part/assembly modeling, drawings, and mechanical requirements definition.
• Support advanced engineering analysis such as system‑level thermal analysis, Finite Element Analysis (FEA), and Computational Fluid Dynamics (CFD) simulations.
• Define, design, prototype, validate, and support mechanical systems for products like rack‑mounted equipment, modular power devices, UPSs, rectifiers, inverters, and more.
• 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 and 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.

Requirements

• Basic Qualifications:
  • Bachelor’s degree in Mechanical Engineering or equivalent.
  • Minimum seven (7) years of experience as a mechanical design engineer, preferably in power electronics design/packaging.
  • Experience with power electronic system design (electrical enclosures, panel layout, seismic considerations, heat management) in electrical equipment, heavy industry, or military sectors.
  • Proficiency with major ERP and CAD systems (SolidWorks or equivalent).
  • Working knowledge of industry codes and standards: ASME, NEMA, UL, IEC, and other applicable mechanical engineering standards.
  • Proficient in generating and reviewing engineering documentation, including BOMs and detailed drawings for sheet metal, plastic, and extruded parts.
  • Proficient with Microsoft Office applications and Microsoft Cloud services.
  • Travel up to 20% within the USA and Canada.
• Additional Qualifications:
  • Experience with UL 1741, CSA C22.2, and related standards.
  • Strong communication skills (oral, written, presentation) with the ability to influence across all organizational levels.
  • Ability to adapt and thrive in a fast‑paced, evolving work environment.
  • Professional Engineer (PE) license is a plus.
  • Ability to excel as the sole mechanical engineer on a project and to create project requirements from incomplete inputs.
  • Strong understanding of structural and thermal analysis; experience with FEA/CFD tools such as SolidWorks Flow Simulation, ANSYS, COMSOL, or similar.