Battery Hardware Technician

DoorDash USA•San Francisco, CA

5d•Onsite

About The Position

DoorDash Labs is seeking a skilled and safety-conscious Battery Hardware Technician to join our hardware engineering team. In this role, you will be the hands-on expert responsible for supporting the development, prototyping, and validation of our next-generation battery systems. You will bridge the gap between design and reality by building prototype battery packs, executing critical testing procedures, and managing day-to-day operations of our battery lab. If you thrive in a fast-paced R&D environment and love working directly with cutting-edge energy storage systems, we want you on our team.

Requirements

Minimum of 2–3 years of hands-on experience working directly with battery cells (lithium-ion preferred) and assembling battery packs.
Proven experience with precision resistance welding, spot welding, and high-quality soldering techniques for electronics and busbars.
Strong proficiency in reading electrical schematics, mechanical drawings, and wiring diagrams. Experience routing and crimping HV/LV connectors and harnesses.
Experience using leak testing equipment, digital multimeters, insulation testers (Hi-Pot), and standard hand/power tools.
Deep understanding of the safety hazards associated with lithium-ion cells and high-voltage systems, with a track record of maintaining a clean, orderly, and safe workspace.

Nice To Haves

Experience with battery management systems (BMS) and basic PCB troubleshooting/rework of components.
Familiarity with battery cyclers (e.g. Chroma) and environmental chambers.
Prior experience in basic CAD (Fixtures etc), rapid prototyping or R&D environment (robotics, automotive, or aerospace).

Responsibilities

Assemble, rework, and modify prototype battery packs and modules from the ground up, working directly with battery cells, modules, connector assemblies and printed circuit boards (PCBs).
Perform precision spot welding, resistance welding, and soldering to interconnect cells and integrate Low-Voltage (LV) and High-Voltage (HV) wiring harnesses and connectors.
Support critical validation tests, including pressure/vacuum leak testing for sealed enclosures, insulation testing, and continuity checks.
Own the maintenance, and safety compliance of the battery build and test laboratory. Ensure all equipment is calibrated, standard operating procedures (SOPs) are followed, and safety protocols for hazardous materials/high-voltage are strictly enforced.
Set up, monitor, and manage battery test equipment (cyclers, environmental chambers, data loggers) and document build processes and test anomalies clearly for the engineering team.