Senior System Quality Engineer

Terawatt Infrastructure•Los Angeles, CA

2d•Remote

About The Position

As a member of the Terawatt technology team in the role of Systems Quality Engineer you will own the processes and data that keep our charging systems performing to spec: defining what "good" looks like, measuring against it, and driving the engineering and operations teams to close the gap when it doesn't. You will be responsible for validating the quality and performance of our full stack products, from End-to-End electrical hardware and software interactions, with a focus on high-power EV charging solutions and energy management systems. This role sits inside the technical organization with strong ties to field operations, software, and hardware procurement.

Requirements

5+ years in a quality engineering, reliability engineering, or systems engineering role — ideally in power electronics, energy storage, EV charging, or industrial electrical equipment
Ability to read and interpret electrical schematics, system architecture diagrams, and hardware test reports
Expertise in high-voltage and low-power electrical systems, including deep, protocol-level debugging of complex in-field customer issues in the EV charging space.
Demonstrated hands-on debugging expertise of communication protocols between EV & EVSE including ISO 15118-2 & 20, DIN 70121, and OCPP protocols.
Experience in practical understanding of CCS, NACS, MCS standards
Hands-on experience validating local site energy management infrastructure including energy meters, local controllers, load limiting, and complex grid interactions with DERs (BESS & Solar).
Strong communication skills to collaborate effectively in a dynamic, cross-functional remote work environment
Ability to work with ambiguity, manage multiple projects and independently collaborate with internal teams and external partners

Nice To Haves

Working knowledge of OCPI & OCPP 2. standards
Familiarity with charge management systems and fleet telematics data
Working experience with Hardware and IoT integrations into backend services
Hands-on experience with EV/EVSE Emulator systems for functional and integration testing
Hands-on experience with automation in Python and integrating with CI/CD pipelines

Responsibilities

Define and maintain quality standards for Terawatt's charging systems, uptime thresholds, fault rates, charge session success rates, hardware failure modes, and build the measurement infrastructure to track them
Contribute to a product-driven engineering culture that champions diverse ideas and bottom-up innovation
Analyze field performance data to identify systemic failures, distinguish one-off events from recurring defect patterns, and prioritize engineering response accordingly
Develop and implement comprehensive QA testing standards, specifically focused on OCPP and ISO 15118 communication protocols and system logs
Triage and perform advanced root cause analysis on product or system issues, using network analysis tools like Wireshark and .pcap files to debug vehicle-to-charger communication and complex field failures
Collaborate closely with vendors to manage and support resolution of critical firmware, hardware, and integration defects, ensuring alignment with technical specifications and SLAs for timely delivery and reliable operation of new features
Ensure lab-to-site validation consistency by verifying that lab configurations and units exactly match field deployments to mitigate risks of unforeseen operational differences
Develop and maintain inspection protocols for new site commissioning; ensure sites are handed off to operations meeting defined quality gates
Collaborate with Operations to define and validate Standard Operating Procedures (SOPs) at the lab before deployment, and coordinate logistics for the delivery and return of large EVSE test units
Contribute to the quality and reliability planning for charging & energy management systems, including local site energy management infrastructure (energy meters, local controllers, and DERs like BESS & Solar)
Collaborate with Terawatt Operations and other stakeholders to ensure highly reliable operations and quality customer experiences at our charging facilities