Materials & Process Engineer for Solid-State Transformers

Amperesand; San Francisco (CA); On-site; USD 120,000 - 160,000; Full time

Benefits offered by this job

Incentive stock options

Medical, vision, dental

401k

PTO and holidays

Commuter Benefits

Job summary

Amperesand is seeking a seasoned Materials Engineer to own the materials and process foundation for its medium voltage Solid State Transformer products. You will lead material selection, develop and qualify potting, coatings, casting, molding, and deposition processes, and drive validation and scalability for production.

The role requires deep expertise in polymers, resins, dielectrics, and coatings, plus hands-on development across lab and manufacturing environments.

Qualifications

• Bachelor’s or Master’s degree in Materials Science and Engineering, Chemical Engineering, or a related field.
• 5+ years of experience in materials processing in production-relevant settings, such as coating, injection molding, casting, potting, or thin film deposition.
• Direct experience and deep understanding of polymers, resins, particles, coating formulations, and composite materials, including how they cure, age, and fail.
• Strong command of fundamental materials properties — dielectric, electrical, thermal, mechanical, and chemical — and how they trade against one another.
• Strong hands-on experimental skills and demonstrated process development capability.
• Proven ability to drive material and process development by combining data-driven metrics with fundamental mechanisms.
• Extensive hands-on laboratory and production floor experience, including leading characterization and validation activities.
• Demonstrated ability to partner with external vendors and internal teams to take a process from initial feasibility to repeatable production.
• Demonstrated ability to independently resolve complex, cross-domain technical challenges and drive cross-functional trade-off decisions.

Responsibilities

• Own material selection across dielectrics, polymers, resins, composites, and coatings, balancing electrical performance, manufacturability, cost, and long-term reliability.
• Lead process development and qualification for potting, coating, casting, molding, thin film deposition, and related processes.
• Define key process parameters, processing conditions, and processing windows, and work with manufacturing and quality to establish production feasibility and control limits.
• Own materials characterization through a combination of in-house testing and third-party labs, including dielectric, thermal, mechanical, and chemical performance.
• Lead root‑cause and failure analysis on materials and process issues across design, manufacturing, and field domains, identifying the mechanism rather than the correlation.
• Source and co-develop novel materials with suppliers when commercially available options cannot meet product requirements.
• Partner with external vendors and internal teams on process equipment selection and optimization to improve material properties and processing capability.
• Influence system-level trade-offs across insulation design, thermal management, packaging, power density, cost, and manufacturability.
• Ensure materials and process solutions scale across product variants and future platforms.
• Elevate materials engineering standards through rigorous design reviews, structured experimentation, and documentation.

Skills

Materials processing

Polymers

Resins

Coatings

Dielectrics

Characterization

Thin film deposition

Laboratory methods

Cross-functional collaboration

Education

Bachelor’s or Master’s degree in Materials Science and Engineering

Tools

Thin film deposition

Coating equipment

Job description

Amperesand is seeking a seasoned Materials Engineer to own the materials and process foundation for its medium voltage Solid State Transformer products. You will lead material selection, develop and qualify potting, coatings, casting, molding, and deposition processes, and drive validation and scalability for production.

The role requires deep expertise in polymers, resins, dielectrics, and coatings, plus hands-on development across lab and manufacturing environments.