Senior Mechanical Design Engineer

The role

You will design custom machinery and support the entire project cycle from concept to installation and commissioning. You will work with cross-functional teams to develop power electronics products for high-power density environments.

What you will do

• Create detailed mechanical designs using CAD software.
• Model and design complex electro-mechanical parts.
• 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.
• 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, controls, manufacturing, test, and industrial design teams.
• Work with suppliers to optimize DFM, DFA, and tooling strategies.
• Lead prototype development, fabrication, assembly, and mechanical testing.

Required qualifications

• 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.

Nice to have

• 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.
• Experience with design and test documentation for regulatory standards (UL, IEC, NEC preferred).

Benefits

• Competitive Salary + Incentive Stock Options
• Medical, vision, and dental benefits for employees and dependents (US)
• Company paid Basic Life, AD&D, short-term and long-term disability insurance (US)
• 401k retirement savings plan through Empower (US)
• Paid time off (PTO), paid sick days, and paid company holidays (US)
• Commuter Benefits (US/Singapore)
• 100% paid maternal leave (12 weeks) and paternal leave (6 weeks) (US)
• Group medical, hospitalisation and surgical insurance, outpatient or GP coverage, group term life, dental and personal accident insurance (Singapore)
• Employer and employee Central Provident Fund contributions (Singapore)
• Annual leave, paid sick leave, hospitalisation leave, and Singapore public holidays (Singapore)
• Government-paid maternity, paternity, shared parental, and childcare leave (Singapore)

About the company

Amperesand is building hardware and software to rewrite power infrastructure. They build intelligent, software-defined power infrastructure products using advanced medium voltage Solid State Transformer research.