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

Design, build, and field-test prototype data collection rigs; create 2D/3D CAD parts and assemblies; develop embedded software to ingest sensor data; collaborate cross-functionally to integrate sensors and iterate on prototypes for perception improvements.

Own end-to-end mechanical architecture and detailed design for a customer-facing, unattended package-loading product. Drive requirements, CAD/FEA, GD&T, tolerance stacks, prototyping, validation, production release, supplier qualification, and field-failure investigations to meet reliability, manufacturability, and serviceability targets. Mentor engineers and collaborate across disciplines to reduce downtime and improve fleet uptime.

Build and maintain a high-performance simulation platform and deterministic digital twins that integrate with flight, cloud, and embedded software. Scale simulation from single-vehicle debugging to fleet-scale CI testing, enable HIL and developer tooling, and partner with cross-functional teams to validate safety-critical autonomous flight logic and system integration.

Lead design validation and test planning for RF avionics products across development, certification, and high-volume production. Build test systems, run end-to-end test campaigns, triage field failures, coordinate cross-functional teams and vendors, and support certification and manufacturing readiness for communication and navigation systems.

Lead mechanical and electromechanical validation for Dropbox assemblies: develop test plans, design and build fixtures and automated rigs, instrument systems, run environmental and high-cycle tests, analyze data, investigate failures, correlate lab and field performance, and collaborate with cross-functional teams to verify reliability and readiness for deployment.

Own operating rhythms and business reviews, build forecasting, planning, and capacity models, develop dashboards and reporting, diagnose operational bottlenecks, and drive cross-functional initiatives from ambiguity to execution while creating scalable systems and processes.

Contribute to and own parts of Zipline's Maps stack: build services for path planning, spatial data pipelines, and tooling to visualize and validate geospatial features. Improve routing algorithms, enable fast spatial data access, and support data generation for flight analytics. Collaborate with teams to adapt algorithms for real-world autonomous delivery operations.

Manage financial onboarding for merchants and partners, prepare and validate weekly/monthly partner payouts, support billing system implementations and UAT, investigate disputes and systemic billing errors, perform month-end journal entries and reconciliations, automate billing processes, and maintain stakeholder relationships.

Lead and build Zipline's Product Operations function to improve product planning, launches, measurement, and cross-functional execution. Establish operating rhythms, launch readiness standards, dashboards, feedback loops, and tooling to reduce time-to-launch and increase launch quality while enabling Product teams and coordinating field readiness.

Develop and validate physics-based, multi-fidelity energy and range models for Zipline aircraft and fleet operations. Build simulation frameworks, integrate toolchains, analyze fleet data, design experiments for model validation, and support energy-aware routing and operational optimization. Drive model quality, documentation, and cross-disciplinary collaboration to inform vehicle and operational decisions.