Senior Mechanical Design Engineer

Amperesand • Reno, NV

8h • $125,000 - $150,000 • Onsite

About The Position

Amperesand is seeking a skilled Senior Mechanical Design Engineer to join their team and contribute to the development of power electronics products. The primary function of this position is to design custom machinery and support the entire project cycle from concept development through installation, commissioning, and handover to the operations team. The engineer will work closely with cross-functional teams, including product design, Controls, manufacturing, and test engineers, to ensure efficient performance and reliability in high-power density environments. Amperesand is reinventing how the world powers its most critical systems by building hardware and software that rewrites the broken power infrastructure playbook to support a new era of energy abundance. They are building a new class of intelligent, software-defined power infrastructure products leveraging advanced medium voltage Solid State Transformer research. Their products are faster to deploy, dramatically smaller and more efficient, and capable of supporting modern, dynamic energy needs. Scalable in-house advanced manufacturing capability is their foundation for meeting timeline and quality expectations. Amperesand is led by breakthrough energy hardware development veterans and funded by top tier investors. With hubs in San Francisco, Reno, and Singapore, their global team is focused on building foundational technology to solve the most pressing problems in power infrastructure at scale.

Requirements

• Bachelor’s or Master’s degree in Mechanical Engineering or a related field.
• 3+ years of experience in mechanical design for power electronics, automotive, industrial, or energy products.
• Expertise in CAD modeling using 3D EXPERIENCE (CATIA V6/V5), SolidWorks, NX, or Creo.
• Deep understanding of mechanical fundamentals—statics, dynamics, heat transfer, and materials.
• Proficiency in GD&T, tolerance analysis, and DFM/DFA principles.
• Experience designing enclosures for IP-rated or outdoor-rated power equipment.
• Experience with high-volume manufacturing processes such as injection molding, die casting, extrusion, and sheet metal forming.
• Working knowledge of materials: metals (aluminum, steel), plastics, ceramics, gaskets, potting compounds.
• Hands-on experience taking designs from prototype through production deployment.
• Familiarity with PLM systems (3D EXPERIENCE, Windchill, etc.) and engineering change workflows.
• Comfortable with root-cause analysis, failure mode resolution, and mechanical reliability testing.
• Strong communication skills and ability to lead cross-functional design reviews and technical deep-dives.
• Prior experience collaborating with suppliers on tooling development, DFM feedback, and tolerance negotiations.
• Familiarity with PCBAs, connectors, and mechanical integration of high-density electronic assemblies.
• Experience with design and test documentation for regulatory standards (UL, IEC, NEC preferred).
• Passion for product innovation, sustainability, and enabling electrification through engineering excellence.
• Willingness and ability to travel up to 15% - 20% including internationally.

Nice To Haves

• Strong background in structural, thermal, and vibration analysis using tools like Ansys Mechanical, Fluent, and Maxwell.
• Familiarity with electronics packaging and PCB interface considerations.
• Experience with medium- to high-voltage systems and insulation coordination (creepage, clearance, potting, sealing).
• Experience working in Agile development environments, including task management and sprint planning using Scrum methodologies and tools like Jira.

Responsibilities

• Utilize CAD software CAD software (3D EXPERIENCE (3DX), CATIA, NX, SolidWorks, Creo etc.) to create detailed mechanical designs.
• Model and design complex electro-mechanical parts, including plastics, sheet metal, insulators, magnetic components, and high-voltage connectors.
• Perform mechanical design analysis, including structural FEA, thermal CFD, vibration, and fatigue assessments.
• Solve packaging challenges involving electrical isolation, sealing, thermal dissipation, EMI/EMC shielding, and mechanical shock/vibration.
• Define and execute validation test plans including structural, thermal, and environmental testing.
• Create 2D drawings with GD&T for production and inspection.
• Create engineering documentation, tolerance stacks, BOMs, and release packages through PLM systems.
• Collaborate cross-functionally with electrical, thermal, Firmware and controls, manufacturing, test, and industrial design teams.
• Work closely with suppliers to optimize DFM, DFA, and tooling strategies for high-volume production.
• Lead prototype development, fabrication, assembly, and mechanical testing of new designs.
• Support root-cause analysis of design issues in pilot or production builds and lead iterative improvements.
• Drive trade studies to inform system-level decisions on design architecture, materials, and manufacturing processes.
• Guide selection for structural, thermal, and electrical compatibility in high-voltage environments.
• Contribute to the layout and design of integrated cooling systems including cold plates, thermal interfaces, and airflow paths.
• Develop assembly procedures and manufacturing instructions to support scalable production.
• Participate in mechanical FMEA and DVP&R activities across product lifecycle stages.
• Work with quality and reliability teams to meet performance, lifecycle, and safety targets.

Benefits

• Competitive Salary + Incentive Stock Options
• Medical, vision, and dental benefits for employees and their dependents, effective from the start of hire
• Company paid Basic Life, AD&D, short-term and long-term disability insurance
• 401k retirement savings plan through Empower
• Employees receive paid time off (PTO), paid sick days, and paid company holidays
• Commuter Benefits
• 100% paid maternal leave (12 weeks) and paternal leave (6 weeks)

What This Job Offers

• Job Type: Full-time
• Career Level: Senior