Full-Time

Senior Staff Mechanical Design Engineer

Updated on 8/21/2026

Amperesand

Amperesand

51-200 employees

Modular solid-state transformers for grid power

Compensation Overview

$180k - $230k/yr

+ Incentive Stock Options

San Francisco, CA, USA + 1 more

More locations: Reno, NV, USA

In Person

On-site 5 days per week; no hybrid or remote options. Travel up to 15%–20%, including internationally.

Bachelor's, Master's

Category
Mechanical Engineering (1)
Required Skills
CAD
Agile
PTC Creo
GD&T
JIRA
Injection Molding
SCRUM
SolidWorks
FEM/FEA

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Requirements
  • A Bachelor's or Master's degree in Mechanical Engineering or a related field.
  • 10+ years of experience in mechanical design for power electronics, automotive, industrial, or energy products.
  • Expertise in computer-aided design modeling using 3D EXPERIENCE (CATIA V6/V5), SolidWorks, NX, or Creo.
  • Deep understanding of statics, dynamics, heat transfer, and materials.
  • Ability to identify the root cause of problems using first-principles understanding.
  • Proficiency in geometric dimensioning and tolerancing, tolerance analysis, and design for manufacturability and assembly 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 metals including aluminum and steel, plastics, ceramics, gaskets, and potting compounds.
  • Hands-on experience taking designs from prototype through production deployment.
  • Familiarity with product lifecycle management systems, including 3D EXPERIENCE and Windchill, and engineering change workflows.
  • Experience with root-cause analysis, failure-mode resolution, and mechanical reliability testing.
  • Ability to lead cross-functional design reviews and technical deep dives.
  • Demonstrated technical leadership without direct reports, such as serving as a technical lead or design authority.
  • Experience directing the work of junior engineers on large efforts.
  • Prior experience collaborating with suppliers on tooling development, design-for-manufacturability feedback, and tolerance negotiations.
  • Familiarity with printed circuit board assemblies, connectors, and mechanical integration of high-density electronic assemblies.
  • Experience with design and test documentation for regulatory standards including UL, IEC, and NEC.
  • Willingness and ability to travel up to 15%–20%, including internationally.
Responsibilities
  • Own the multi-generation mechanical technology roadmap across product platforms.
  • Mentor Staff and Senior mechanical engineers and lead design-review governance.
  • Represent mechanical engineering in executive and leadership technical reviews.
  • Drive build-versus-buy and make-versus-buy strategy at the program level.
  • Model and design complex electromechanical parts, including plastics, sheet metal, insulators, magnetic components, and high-voltage connectors, using computer-aided design software to create detailed three-dimensional and two-dimensional designs.
  • Serve as the primary design point of contact for cross-functional teams, guiding their work and connecting inputs to develop action plans for problems.
  • Collaborate with electrical, thermal, firmware and controls, manufacturing, test, quality, reliability, and industrial design teams.
  • Lead prototype development, fabrication, assembly, and mechanical testing of new designs.
  • Drive trade studies on design architecture, materials, and manufacturing processes.
  • Guide selection for structural, thermal, and electrical compatibility in high-voltage environments.
  • Define and execute structural, thermal, and environmental validation test plans.
  • Support root-cause analysis of design issues in pilot or production builds and lead iterative improvements.
  • Perform mechanical design analysis, including structural finite element analysis, thermal computational fluid dynamics, vibration, and fatigue assessments.
  • Solve packaging challenges involving electrical isolation, sealing, thermal dissipation, electromagnetic interference and electromagnetic compatibility shielding, and mechanical shock and vibration.
  • Create engineering documentation, tolerance stacks, bills of materials, and release packages through product lifecycle management systems.
  • Work with suppliers to optimize design for manufacturability, design for assembly, and tooling strategies for high-volume production.
  • 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 failure mode and effects analysis and design verification plan and report activities across product lifecycle stages.
  • Work with quality and reliability teams to meet performance, lifecycle, and safety targets.
  • Set mechanical design standards and design-for-manufacturability and design-for-assembly guidelines used across the engineering organization.
Desired Qualifications
  • Strong background in structural, thermal, and vibration analysis using Ansys Mechanical, Fluent, and Maxwell.
  • Familiarity with electronics packaging and printed circuit board interface considerations.
  • Experience with medium- to high-voltage systems and insulation coordination, including creepage, clearance, potting, and sealing.
  • Experience working in Agile development environments, including task management and sprint planning using Scrum methodologies and Jira.
  • A track record of patents or first-of-kind mechanical designs shipped at volume.

Amperesand designs modular solid-state transformers for grid infrastructure using silicon carbide devices and high-frequency transformers to boost efficiency and shrink size, with digital AI control for smart power management. The systems come in 2, 4, and 6 MW modules that can be combined to meet larger needs and support bidirectional power flow for EV charging, microgrids, data centers, and industrial loads, potentially replacing traditional transformers, switchgear, and UPS. Its differentiators include SiC-based SSTs, proprietary high-frequency transformers, and AI-driven control, backed by a team with NTU R&D roots and leadership from ABB, GE, Siemens, and Vestas. The company aims to accelerate the energy transition by scaling manufacturing and delivering SST deployments, with first deliveries planned for 2025 in the US and Singapore.

Company Size

51-200

Company Stage

Series A

Total Funding

$130M

Headquarters

Singapore

Founded

2023

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Simplify Jobs

Simplify's Take

What believers are saying

  • Amperesand closed an $80 million Series A in November 2025 with Temasek.
  • It targets 30MW of commercial deployments in 2026, starting at Port of Singapore.
  • Reno manufacturing approval in March 2026 adds U.S. production and 60 jobs.

What critics are saying

  • Independent UL file numbers and field reliability data remain undisclosed before 2026 shipments.
  • DG Matrix, Heron Power, ABB, and Eaton pressure Amperesand on certification and pricing.
  • If PSA or hyperscale pilots slip, Amperesand misses 2026 revenue and credibility.

What makes Amperesand unique

  • Amperesand's MV SST compresses transformers, switchgear, and UPS into one modular unit.
  • NTU's seven-year program gives Amperesand deep grid IP from its 2023 spinout.
  • PSA and hyperscale AI pilots anchor a rare port-plus-data-center go-to-market.

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Benefits

Health Insurance

Dental Insurance

Vision Insurance

Life Insurance

Disability Insurance

401(k) Retirement Plan

Stock Options

Paid Vacation

Paid Sick Leave

Paid Holidays

Commuter Benefits

Parental Leave

Growth & Insights and Company News

Headcount

6 month growth

0%

1 year growth

0%

2 year growth

-6%
DealStreetAsia
Jun 2nd, 2026
Amperesand secures $30m more from new, existing investors

It raised $80m in its Series A funding round in November.

Nanyang Technological University
Apr 17th, 2026
NTU deep tech energy spin-off to get $10 million boost for commercialisation

NTU deep tech spin-off Amperesand is poised to get a $10 million boost, to commercialise technology that could allow electric vehicles (EVs) to be charged more efficiently.

Economic Development Authority of Western Nevada
Mar 17th, 2026
Amperesand, Inc. selects Reno for U.S. Manufacturing facility focused on next-generation energy infrastructure.

Amperesand, Inc. selects Reno for U.S. Manufacturing facility focused on next-generation energy infrastructure. For immediate release. Marketing and Communications Specialist [email protected], 775-343-6811 Reno, Nev. (March 17, 2026) - Amperesand, Inc., an energy technology company developing next-generation solid-state transformer systems, has selected Reno for a new U.S.-based manufacturing facility. The project was recently approved for state tax abatements by the Nevada Governor's Office of Economic Development. The operation is expected to create more than 60 new jobs over the next two years with an average hourly wage of $55.50, well above the regional average. Amperesand plans to invest tens of millions of dollars in equipment and operational infrastructure within its first two years and is projected to generate more than $13.8 million in new tax revenue over the 10-year abatement period. The GOED Board approved $2,004,004 in performance-based abatements tied to job creation, wage levels, and capital investment. At the center of the expansion is Amperesand's Medium Voltage Solid State Transformer technology. Unlike traditional transformers that passively convert electrical power, solid-state transformers use advanced power electronics and software controls to actively manage energy flow. This allows large industrial users and AI-driven data centers to connect to power sources more quickly, improve overall energy efficiency, and dynamically adapt to changing demand. The technology also supports integration of renewable energy sources and more resilient grid systems, helping modernize infrastructure while reducing energy losses and physical footprint. By establishing manufacturing in Nevada, Amperesand will produce critical power conversion systems designed to support giga-scale industrial operations and AI infrastructure across the United States and globally. "This project reflects both where the economy is going and how energy systems are evolving," said Taylor Adams, President and CEO of the Economic Development Authority of Western Nevada. "As AI adoption accelerates and electrification expands, demand for efficient, flexible, and more sustainable power infrastructure is increasing. Amperesand is building the systems that make that possible. Their decision to manufacture in Northern Nevada continues to position our region as a frontrunner in the next generation of energy innovation." Brian Dow, CEO of Amperesand, cited Northern Nevada's infrastructure readiness, business climate, and long-term growth trajectory as key factors in the decision. "We were looking for a location that could support advanced manufacturing today and scale with us tomorrow," Dow said. "Northern Nevada offers exceptional advanced manufacturing talent, strong logistics access, available industrial capacity, and a collaborative public-private environment. That combination made Reno the right place to expand our U.S. production footprint." EDAWN represented the project throughout the state approval process, coordinating site selection, workforce data analysis, and infrastructure discussions in preparation for GOED Board approval. Nevada does not offer upfront cash incentives; instead, qualifying companies may receive performance-based tax abatements tied to measurable economic impact. As global energy demand grows and grid systems become more complex, investments like this connect Northern Nevada to the infrastructure powering industrial growth, renewable integration, future-ready jobs, and the expanding AI economy. About EDAWN: The Economic Development Authority of Western Nevada is a 501(c)6 non-profit organization established in 1983 funded primarily by private investors with support from public partners, committed to supporting, growing, and maintaining a vibrant and sustainable economy in Northern Nevada. For more information, visit: www.edawn.org About Amperesand: Amperesand's infrastructure solutions, powered by novel solid-state transformer (SST) technology, enable efficient, intelligent, and resilient electrification. Amperesand's core SST technology was pioneered at the Energy Research Institute at Nanyang Technological University (NTU). Amperesand was established in 2023. For more information, visit www.amperesand.io.

TechCrunch
Feb 20th, 2026
Startups raise $280M to replace century-old transformers with smart grid tech

Three startups modernising electrical transformers have recently raised significant funding rounds. DG Matrix secured $60 million in Series A, Heron Power raised $140 million in Series B, and Amperesand obtained $80 million in November. These companies are developing solid-state transformers that replace traditional copper-and-iron devices with power electronics using silicon-based semiconductors. Unlike conventional transformers, the new technology offers real-time monitoring, bidirectional power flow, and software updates whilst handling multiple tasks in a single device. Data centres represent the initial target market, where solid-state transformers can replace several pieces of equipment whilst occupying 70% less space. The technology arrives as existing transformers age — over 50% of US distribution transformers exceed 35 years old — and demand surges from data centres and EV chargers.

Tech in Asia
Nov 19th, 2025
Temasek joins $80m series A in SG startup Amperesand

Temasek joins $80m series A in SG startup Amperesand. Amperesand, a US- and Singapore-based power infrastructure startup, has raised US$80 million in a series A round co-led by Walden Catalyst Ventures and Temasek. New investors include Industry Ventures, Acclimate Ventures, and SG Growth Capital, with existing backers Xora Innovation, Material Impact, TDK Ventures, and Foothill Ventures also joining. The funding will support the deployment of 30MW of its Medium Voltage Solid-State Transformer (MV SST) systems in 2026, aimed at AI data centers and critical power customers. Amperesand plans to expand engineering and manufacturing operations in the US and Singapore. The company was spun out from Nanyang Technological University in 2023 and focuses on power infrastructure for high-density computing and megawatt charging. First commercial units are expected in early 2026, including a project at the Port of Singapore with PSA International. Amperesand expects to have over 100 employees globally by the end of 2025. Food for thought. Amperesand cites standards compliance; independent certifications and pilot data remain limited ahead of 2026 ramp. * Amperesand says its Medium Voltage Solid-State Transformer (MV SST) meets UL (a U.S. product safety certifier), IEC (International Electrotechnical Commission), and IEEE (Institute of Electrical and Electronics Engineers) standards 1. The Series A announcement gives no specific certifications or listings such as UL file numbers 2. * The company finished full-power, overload, and bidirectional testing of its Generation 2 system in 2024 2. It has shared no independent field data to back the 99.999% uptime claim 1. * The PSA Singapore pilot starts in mid-2025 with a one-year Proof of Value phase 3. Results land in 2026, while the funding release lists no signed purchase orders, letters of intent, or type-test results from labs such as KEMA or DEKRA 2. Port electrification contractors can target active grants before Amperesand scales. * EPA's (U.S. Environmental Protection Agency) Clean Ports Program awarded nearly $3 billion across 54 grants for zero-emission equipment and infrastructure at U.S. ports, with projects running over the next three to four years 4. This creates immediate openings for electrical contractors and systems integrators. * Washington's $26.5 million Port Electrification Grant funded 11 projects in August 2024 5, while Maine issued a request for proposals (RFP) for port electrification planning in June 2025 6. Vendors of medium-voltage power electronics can bid into these cycles. * Shore power plus megawatt charging projects funded in 2025 will need engineering, procurement, and construction (EPC) support 2. That work comes before Amperesand's first commercial units and its 30 MW deployments in 2026, which favors established suppliers of transformers, switchgear, or power distribution gear. How would you feel if you could no longer use Tech in Asia?