About Tau

Power conversion is the bottleneck between the compute, energy, and mobility industries and the future they're trying to build. Most of the industry is still solving it with decades-old approaches. Tau is fixing that. We're a venture-backed hardtech company in Redwood City, building power conversion technology for data centers, EVs, and energy systems. Several products are already moving into production.

We hire people who own problems end-to-end: power electronics, embedded software, controls, test and validation, mechanical design. We solve from first principles, not legacy playbooks. We're past "promising technology." Customers are buying, volume is coming, and the people who join now set the standard everyone builds on after.

About the role

Tau is validating power electronics at the boundary between hardware, controls, software, thermal systems, and the vehicle. Failures rarely belong neatly to one discipline. The job is to design tests that expose those interactions, distinguish product problems from test problems, and turn ambiguous system behavior into defensible engineering conclusions.

This role owns test planning and execution for Tau's power conversion products, including electric motors, onboard chargers, DC-DC converters, and power modules for EV powertrains. You'll define what "validated" means for a given program, plan and run the dynamometer, high-voltage, reliability, thermal, and vibration campaigns that prove it, and drive anomalies to root cause using Tau's existing test capability.

You'll also be one of Tau's technical faces to the outside world. When a customer or Tier 1 partner needs someone onsite to run dynamometer testing on their floor, troubleshoot alongside their engineering team, and represent Tau's product credibly under their scrutiny, that's you.

What you'll do

Test strategy and planning

Build systematic integration and test plans with clear sequencing,
entry/exit criteria, instrumentation, configuration baselines, expected
behavior, evidence, decision records, owners, and closure criteria
Define the dynamometer, high-voltage, reliability, thermal, and
vibration test campaigns needed to validate power conversion products
against requirements
Set technical standards for what counts as validated, calibrated, and trustworthy, including reliability and durability sign-off, and hold the work to them
Prioritize and sequence test coverage against program risk and milestones, in collaboration with the engineers who own the design

Test execution and analysis

Direct and coordinate lab test operations from pre-test preparation through execution, serving as the focal point for test sequencing, anomaly response, and troubleshooting
Run dynamometer and high-voltage test campaigns to characterize performance, efficiency, and reliability of power conversion products under real-world load conditions
Execute reliability, thermal, and vibration testing to validate designs
against durability and environmental requirements
Use lab test equipment and Tau's simulation/emulation environment to set up test cases, validate system requirements, and investigate issues
Interpret wiring diagrams and perform hands-on electrical
troubleshooting using oscilloscopes, meters, and sensors
Debug anomalies to root cause and feed findings back to the relevant design teams, collaborating on resolution and re-verification

Customer and third-party support

Provide onsite integration and test support at customer and partner facilities — for example, running dynamometer campaigns at a Tier 1 supplier and interfacing directly with their technical team
Represent Tau technically in front of customers and partners:
troubleshoot jointly, answer for your test data, and translate field
findings into corrective action back at Tau
Coordinate test schedules and logistics across internal and external
stakeholders when running campaigns off-site

Cross-functional collaboration

Partner with power electronics, controls, embedded software, and
mechanical engineers to develop test plans and procedures