Does QuantumScape sponsor H-1B visas?

QuantumScape has filed H-1B petitions with the US Department of Labor in past years, but this specific posting does not explicitly mention sponsorship for the Power Electronics Lead, Battery System role. Confirm with the employer before applying if visa support is required.

Where is the Power Electronics Lead, Battery System role at QuantumScape based?

This role is based in San Jose, CA.

What degree is required for the Power Electronics Lead, Battery System role at QuantumScape?

The posting accepts the following combinations: BS + 12 years, MS + 10 years, PhD + 8 years.

How many years of experience does this Power Electronics Lead, Battery System role require?

The posting calls for at least 10 years of relevant experience.

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H-1B history

Power Electronics Lead, Battery System

QuantumScape · San Jose, CAtoday

BS-level R&D / Research roles on Crosslinked list a median of $125k (334 that show pay). This posting does not list pay.

Own power conversion architecture and bidirectional battery charge/discharge path for solid-state battery systems

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Electronic materials · R&D / Research roles, by email

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Worth knowing

Why it is interesting. Blank-sheet design of a power platform for a technology that changes what's possible at rack level.

Might not be for you. Requires 10+ years of power electronics experience; not a materials science role.

Bench and deskTechnical leadSmall team Senior hires only Realistic requirements

Adjacent materials roleBidirectional charge/discharge path for the integrated solid-state battery pack; define charge/discharge power path, voltage window, current limits for solid-state cells

Seniority: Senior
Work: On-site
Type: Full-time
Degree: BS
Experience: 10+ yrs
Industry: Energy
Role: R&D / Research

Role details

QuantumScape is on a mission to transform energy storage with solid-state lithium-metal battery technology. The company’s next-generation batteries are designed to enable greater energy density, faster charging and enhanced safety to support the transition away from legacy energy sources toward a lower carbon future.

About the role

As Power Electronics Lead, you will own the complete power conversion architecture - from AC mains or 48V DC bus input through regulated output rails, including the bidirectional charge/discharge path for the integrated solid-state battery pack. You are the chief engineer for the power stage and the technical decision-maker whose topology choices cascade to every other discipline on the team.

Why this role matters

Your architecture decisions define the entire product. Whether the battery sits in-line or on a sidecar bus, whether you go GaN at 48V or Si at 12V, whether the hold-up transfer is sub-millisecond or requires a brief interruption - every downstream engineer builds on top of your choices. This is a rare opportunity to design a power platform from a blank sheet with a technology (solid-state batteries) that fundamentally changes what's possible at rack level.

What you'll do

Architect the end-to-end power conversion topology (AC-DC front end, intermediate bus, DC-DC output stage, bidirectional battery converter path)
Lead topology trade-off analysis: LLC resonant, phase-shifted full bridge, hybrid approaches, in-line vs. parallel sidecar battery integration
Design magnetics (planar transformers, coupled inductors) and select power semiconductors (GaN/SiC FETs, diodes) with thermal derating analysis
Define and drive efficiency targets (97%+ titanium-class at rack load) and power density goals within a lOU or 20U shelf envelope
Collaborate closely with the firmware/embedded engineer on digital control loop implementation (voltage/current mode compensation, loop bandwidth, phase margin)
Work with the battery systems engineer to define the charge/discharge power path, voltage window, and current limits for solid-state cells
Design protection circuits (OCP, OVP, OTP, short-circuit) and define fault response behavior
Bring up and validate prototype power stages on the bench, iterating through bringup, thermal characterization,and efficiency optimization
Interface with the PCB layout contractor to ensure EMI-conscious layout, proper creepage/clearance,and power plane integrity

Skills you’ll need

10+ years designing multi-kW AC-DC or DC-DC power converters that shipped in volume
Relevant Bachelor’s degree plus a minimum of 12+ years of experience or a relevant Master’s degree and 10+ years of experience or a relevant Ph.D. and a minimum of 8+ years
Deep expertise in at least two converter topologies (LLC, PSFB, DAB, CLLC, or equivalent)
Hands-on magnetics design experience (core selection, winding strategy, loss modeling)
Experience with digital power control (working with DSP/MCU-based compensators, not just analog)
Track record in server PSU, telecom rectifier, EVonboard charger, or comparable high-density power product
Proficiency with simulation tools (PLECS, LTspice, Simplis, PSIM, or equivalent)
Comfortable leading technical direction and mentoring a small cross-functional team

Nice to have

GaN or SiC wide-bandgap device design experience
Familiarity with 48V or high-voltage DC bus architectures
Experience with bidirectional power converters (critical for integrated battery path)
Knowledge of OCP Open Rack/ ORv3 power delivery specs
Prior exposure to battery charging systems (CC-CV profiles, temperature-dependent rate limits)
Experience with hardware-in-the-loop testing (Typhoon HIL, PLECS RT Box)

ONSITE

This position is required to work onsite 5 days per week to meet the minimum essential duties and requirements of this position. As an on-site R&D and manufacturing operations organization, in-person face to face interaction is essential to building authentic relationships, trust, teamwork, and collaboration.