System Integration/Test Engineering, Senior

We are a mission-driven company designing, building, and deploying products that electrify the built environment, reduce carbon emissions, and slow the effects of climate change.
Decarbonization is the process to reduce or remove greenhouse gas emissions, especially carbon dioxide, from entering our atmosphere.
Electrification is the process of replacing fossil fuel appliances that run on gas or oil with all-electric upgrades for a cleaner way to power our lives.
Enabling homes and vehicles powered by clean energy
Building more resilient homes with reliable backup
Designing a flexible and distributed electrical grid
Our Integration Engineers are moving fast, generating high-level test plans to validate complex system interactions. We need a Senior Test Engineer who can step into that gap—someone who can take a conceptual test, refine it into a rigorous technical requirement, and then architect the path to a "low/no-touch" automated reality. You will be the force multiplier that turns manual lab validation into a scalable, repeatable, and automated firmware testing machine.

As a Senior Test Engineer, you are the technical bridge between System Integration and Test Execution. Your mission is to take complex, high-level system requirements and translate them into a rigorous, automated testing strategy.
You will define the "what" and the "how," ensuring our HITL rigs and software frameworks are evolving to meet the needs of our product.

Transform "rough" test plans from Integration Engineers into formal, airtight test requirements. You will be the primary gatekeeper for test quality and coverage.
Direct Automation & Infrastructure: Act as the internal "customer" for our Automation and Rig-Build teams. You’ll ensure that every firmware requirement is mapped to a test case and that every failure is triaged with enough technical detail for firmware devs to act immediately.
While you will have dedicated automation support, you will personally script complex, "first-of-a-kind" tests and design the framework extensions necessary to scale our testing capabilities.
System Verification Expertly verify the critical intersection of software and hardware. You will execute system-level verification of new features, build and maintain robust regression test suites, and monitor the ongoing stability of our panel software ecosystem.
You understand how to structure projects to ensure 100% test coverage and traceability.
Test Script Power User: You are comfortable writing custom hooks, fixtures, and plugins in Python to enable sophisticated hardware testing.
Hardware-Fluent: You understand the constraints of a Hardware-in-the-Loop (HITL) environment and know how to debug issues that could be firmware, electrical, or script-related.
Senior-level experience in Firmware, Embedded Systems, or Systems Test Engineering.
Headquartered in San Francisco’s vibrant SoMa neighborhood, we are an eclectic group of creative thinkers who value open communication, teamwork, and a ‘make it happen’ approach to addressing complex challenges.
SPAN embraces diversity and equal opportunity in a serious way. We are committed to building a team that represents a variety of backgrounds, perspectives, and skills.
Competitive compensation + equity grants at a well-funded, venture-backed company

• Comprehensive benefits: 100% employee premiums for base plans on medical, dental, vision with options for additional coverage. Comfortable, sunny office space located near BART and Caltrain public transit
• Strong focus on team building and company culture: Flexible hours, one holiday per month, and flexible time off