Top Tech Jobs & Startup Jobs in San Francisco Bay Area, CA

Design, build, and sustain electromechanical test equipment for batteries and power electronics. Deliver end-to-end test systems combining mechanical, electrical, instrumentation, controls, safety, and automation. Create CAD, schematics, wiring, automation scripts, and manufacturing documentation. Commission, validate, troubleshoot, and improve lab and production test fixtures while collaborating across mechanical, electrical, software, reliability, manufacturing, and field teams.

Own outbound shipments from order release through carrier handoff. Pick, stage, verify, and package serialized and high-value parts. Prepare shipment documents, coordinate pickups, complete ERP/WMS transactions, resolve inventory discrepancies, and partner across teams to protect traceability and ensure on-time deliveries.

Lead development and validation of dynamic models, controls algorithms, and high-fidelity six-degree-of-freedom simulations. Analyze flight-test and fleet data to improve model fidelity, evaluate vehicle designs, recommend controls and system improvements, and build reusable analysis tools to inform engineering and operational decisions.

Lead a 5–9 person aerodynamics team to define and deliver aerodynamic and aeroacoustic performance for Zipline vehicles. Own CFD/modeling, experimental testing (wind tunnel, flight-test), propeller trade studies, release-quality geometry, and aero health metrics. Interface cross-functionally to drive design, validation, manufacturability, and operational performance with regular domestic travel for flight tests.

Lead national land use, zoning, entitlements, and permitting strategy for Zipline’s U.S. expansion. Build municipal relationships, represent the company at public hearings, interpret and draft ordinances, and coordinate cross-functionally with Operations, Real Estate, and Engineering to enable site deployments and regulatory approvals.

Develop, validate, and own cell- and pack-level battery models (SPM/SPMe/P2D and equivalent circuit) and electro-thermal models. Design and analyze EIS, HPPC, OCV, and aging test campaigns. Build battery state estimation and charging/aging-aware algorithms and integrate models into simulation and fleet software. Lead cell selection and vendor benchmarking and collaborate cross-functionally to deploy validated models into operations.

As a Motor Firmware Engineer, you'll develop high-performance firmware for motor controllers, collaborating with multi-disciplinary teams, validating firmware, and improving flight software reliability.

Design and implement high-performance motor controllers and estimators in C++ for bare-metal ARM microcontrollers, write peripheral drivers, validate firmware on bench and flight tests, develop simulations and HIL tests in Rust/Python/Matlab/Julia, and collaborate across hardware, flight software, and operations to improve reliability and fleet monitoring.

Own and operate commerce platform services end-to-end: merchant portals, partner integrations, marketplace policy, billing/settlements, and fulfillment tooling. Drive reliability, SLOs, incident response, cross-functional launches, partner onboarding, observability, and mentor engineers while ensuring financial correctness and scalable production systems.

Lead multidisciplinary mechanical, electrical, test, and technician teams to take the Dropbox electromechanical hardware from architecture through validation, production intent, and scalable deployment. Own system-level tradeoffs, risk management, test planning, supplier/manufacturing handoff, field reliability, and cross-functional partnerships while hiring, coaching, and operating the hardware organization's processes and launch readiness.