Back to jobs
New

Sr. Staff Mechanical Design Engineer

Reno, Nevada, United States; San Francisco, California, United States

Company Overview   

Amperesand is disrupting industrial power with the first commercialized Solid State Transformer systems. Solid State Transformers systems are much more than a transformer replacement, enabling numerous advanced features to unlock solutions for data centers, EV charging, renewables, microgrids, and industrial installations. We are looking for mission driven team members passionate about making amazing products for worldwide electrification at maximum acceleration. Amperesand is building a global company and looking for talent across our geographies.  

Responsibilities:

  • Utilize CAD software (3D EXPERIENCE (3DX), CATIA, NX, SolidWorks, Creo) to create detailed mechanical designs

  • Lead the mechanical architecture and design of medium-voltage power electronics converter assemblies and complex electro-mechanical parts including plastics, sheet metal, insulators, magnetic components, and high-voltage connectors

  • Perform 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 structural, thermal, and environmental validation test plans

  • Create 2D drawings with GD&T, engineering documentation, tolerance stacks, BOMs, and release packages through PLM systems

  • Collaborate with electrical, thermal, Firmware and controls, manufacturing, test, industrial design, and 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 pilot or production issues and lead iterative improvements

  • Drive trade studies on design architecture, materials, and manufacturing processes

  • Guide selection for structural, thermal, and electrical compatibility in high-voltage environments

  • Contribute to cooling system layouts 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

  • Work with quality and reliability teams to meet performance, lifecycle, and safety targets

  • Mentor junior engineers and provide technical leadership across product programs

  • Contribute to technology development for future-generation SST products and enclosures

 Qualifications:

  • 8+ years of experience in mechanical design for power electronics, automotive, industrial, or energy products

  • Bachelor’s or Master’s degree in Mechanical Engineering or a related field

  • Expertise in CAD modeling using 3DEXPERIENCE (CATIA V6/V5), SolidWorks, NX, or Creo

  • Deep understanding of 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 injection molding, die casting, extrusion, and sheet metal forming

  • Working knowledge of metals (aluminum, steel), plastics, ceramics, gaskets, and potting compounds

  • Hands-on experience taking designs from prototype through production deployment

  • Familiarity with PLM systems (3DEXPERIENCE, 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)

  • Ability to drive concurrent engineering initiatives across product timelines

  • Passion for product innovation, sustainability, and electrification

  • Willingness and ability to travel 15%–20%, including internationally

Bonus Qualifications: 

  • Experience working in Agile development environments using Scrum methodologies and tools like Jira

  • Strong background in structural, thermal, and vibration analysis using 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)

Please note: This role requires working on-site 5 days a week. We do not offer hybrid or remote options. 

 

SF Pay Range

$150,000 - $230,000 USD

Reno Pay Range

$150,000 - $230,000 USD

Pay Disclosure & Benefits

Compensation will be determined based on experience, location, and other factors permitted by law.  

The benefits outlined below apply exclusively to employees located in the United States.

  • 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
  • Employees receive paid time off (PTO), paid sick days, and paid company holidays so they can rest, recharge, and take care of their health and personal needs.
  • Commuter Benefits 
  • 12 Weeks Paid Parental Leave 

Singapore-based employees receive benefits in accordance with local government provisions.

Equal Employment Opportunity 

Amperesand is an equal opportunity employer and complies with all applicable federal, state, and local fair employment practices laws. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, sex, sexual orientation, gender, gender expression, gender identity, genetic information or characteristics, physical or mental disability, marital/domestic partner status, age, military/veteran status, medical condition, or any other characteristic protected by law. 

Amperesand is also committed to working with and providing reasonable accommodations to individuals with disabilities. Please let your recruiter know if you need an accommodation at any point during the interview process. 

Apply for this job

*

indicates a required field

Resume/CV*

Accepted file types: pdf, doc, docx, txt, rtf

Cover Letter

Accepted file types: pdf, doc, docx, txt, rtf

Select...
Select...

U.S. Standard Demographic Questions

We invite applicants to share their demographic background. If you choose to complete this survey, your responses may be used to identify areas of improvement in our hiring process.
Select...
Select...
Select...
Select...
Select...
Select...

Voluntary Self-Identification

For government reporting purposes, we ask candidates to respond to the below self-identification survey. Completion of the form is entirely voluntary. Whatever your decision, it will not be considered in the hiring process or thereafter. Any information that you do provide will be recorded and maintained in a confidential file.

As set forth in Amperesand’s Equal Employment Opportunity policy, we do not discriminate on the basis of any protected group status under any applicable law.

Select...
Select...
Race & Ethnicity Definitions

If you believe you belong to any of the categories of protected veterans listed below, please indicate by making the appropriate selection. As a government contractor subject to the Vietnam Era Veterans Readjustment Assistance Act (VEVRAA), we request this information in order to measure the effectiveness of the outreach and positive recruitment efforts we undertake pursuant to VEVRAA. Classification of protected categories is as follows:

A "disabled veteran" is one of the following: a veteran of the U.S. military, ground, naval or air service who is entitled to compensation (or who but for the receipt of military retired pay would be entitled to compensation) under laws administered by the Secretary of Veterans Affairs; or a person who was discharged or released from active duty because of a service-connected disability.

A "recently separated veteran" means any veteran during the three-year period beginning on the date of such veteran's discharge or release from active duty in the U.S. military, ground, naval, or air service.

An "active duty wartime or campaign badge veteran" means a veteran who served on active duty in the U.S. military, ground, naval or air service during a war, or in a campaign or expedition for which a campaign badge has been authorized under the laws administered by the Department of Defense.

An "Armed forces service medal veteran" means a veteran who, while serving on active duty in the U.S. military, ground, naval or air service, participated in a United States military operation for which an Armed Forces service medal was awarded pursuant to Executive Order 12985.

Select...

Voluntary Self-Identification of Disability

Form CC-305
Page 1 of 1
OMB Control Number 1250-0005
Expires 04/30/2026

Why are you being asked to complete this form?

We are a federal contractor or subcontractor. The law requires us to provide equal employment opportunity to qualified people with disabilities. We have a goal of having at least 7% of our workers as people with disabilities. The law says we must measure our progress towards this goal. To do this, we must ask applicants and employees if they have a disability or have ever had one. People can become disabled, so we need to ask this question at least every five years.

Completing this form is voluntary, and we hope that you will choose to do so. Your answer is confidential. No one who makes hiring decisions will see it. Your decision to complete the form and your answer will not harm you in any way. If you want to learn more about the law or this form, visit the U.S. Department of Labor’s Office of Federal Contract Compliance Programs (OFCCP) website at www.dol.gov/ofccp.

How do you know if you have a disability?

A disability is a condition that substantially limits one or more of your “major life activities.” If you have or have ever had such a condition, you are a person with a disability. Disabilities include, but are not limited to:

  • Alcohol or other substance use disorder (not currently using drugs illegally)
  • Autoimmune disorder, for example, lupus, fibromyalgia, rheumatoid arthritis, HIV/AIDS
  • Blind or low vision
  • Cancer (past or present)
  • Cardiovascular or heart disease
  • Celiac disease
  • Cerebral palsy
  • Deaf or serious difficulty hearing
  • Diabetes
  • Disfigurement, for example, disfigurement caused by burns, wounds, accidents, or congenital disorders
  • Epilepsy or other seizure disorder
  • Gastrointestinal disorders, for example, Crohn's Disease, irritable bowel syndrome
  • Intellectual or developmental disability
  • Mental health conditions, for example, depression, bipolar disorder, anxiety disorder, schizophrenia, PTSD
  • Missing limbs or partially missing limbs
  • Mobility impairment, benefiting from the use of a wheelchair, scooter, walker, leg brace(s) and/or other supports
  • Nervous system condition, for example, migraine headaches, Parkinson’s disease, multiple sclerosis (MS)
  • Neurodivergence, for example, attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder, dyslexia, dyspraxia, other learning disabilities
  • Partial or complete paralysis (any cause)
  • Pulmonary or respiratory conditions, for example, tuberculosis, asthma, emphysema
  • Short stature (dwarfism)
  • Traumatic brain injury
Select...

PUBLIC BURDEN STATEMENT: According to the Paperwork Reduction Act of 1995 no persons are required to respond to a collection of information unless such collection displays a valid OMB control number. This survey should take about 5 minutes to complete.