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# Charging Test Engineer

- **Company:** Tellus Solutions
- **Location:** Mountain View, CA, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Data Analysis, Automation of Tests, Computer Engineering, Emulators, Interoperability, Python (Programming Language), Regression Testing, Software Reliability Testing, Test Case, Test Execution Engine, Data Logging, Hardware Testing, Git, Bug Reporting
- **Published:** November 10, 2026
- **Apply:** https://www.careerbuilder.com/job-details/charging-test-engineer-mountain-view-ca--4a3def71-4693-42f3-8a69-a286a8653a15

## About the Role

Testing, Acceptance Testing, Test Plan/Schedule, Test Case, Reliability Testing, Interoperability, Emulators, Vehicle Fleets, Data Collection, Data Analysis, Required

 * BS in Electrical, Electronics, or Computer Engineering, or equivalent experience.
 * 3+ years of hardware test or validation experience with power electronics, EV charging, or energy systems.
 * Safe hands-on work with high-voltage DC and 480 VAC three-phase equipment.
 * Experience using power analyzers, oscilloscopes, current and voltage probes, thermal cameras, and data acquisition (DAQ) systems.
 * Python or similar scripting for test automation and data analysis; experience with Git.

Preferred

 * Experience with DCFC protocols and standards: CCS, NACS (SAE J3400), ISO 15118 / DIN 70121, OCPP, and UL 2202 / IEC 61851.
 * Experience with EV/battery emulators or CharIN conformance testing.

## Description

Execute the DC fast charging (DCFC) acceptance test plan within the planned schedule, and repeat the same process for future charging equipment, Test execution

 * Execute test cases by priority (P0, then P1, then P2) on any vendor's charging equipment: functional, power delivery and sharing, interoperability, thermal, efficiency, fault response, back-end (OCPP), and reliability tests
 * Coordinate vehicle availability with Ops and run tests with fleet vehicles or EV/battery emulators, as the test plan specifies
 * Collect measurement data (power analyzer, thermal camera, thermocouples, charger, vehicle, and OCPP logs) and report pass/fail results with evidence in the standard report template
 * Log defects with reproduction steps and data, follow them through vendor root-cause analysis and fixes, and run regression tests
 * Track uptime, connectivity, and session-success KPIs against their targets

Test automation

 * Write scripts to automate repeatable test cases in the test plan, for example OCPP-driven session sequences, multi-session power-sharing runs, endurance cycles, and KPI calculation
 * Build data-processing tools that merge instrument and log data and compute results against pass/fail limits
 * Keep tools vendor-agnostic, version-controlled, and documented

Test site bring-up (secondary)

 * Support setup of new test sites for the selected hardware: instrumentation installation and calibration, network and data-logging setup, and witnessing vendor commissioning
 * Maintain a reusable bring-up checklist and test setup diagrams

Safety

 * Follow high-voltage safety procedures, lockout/tagout, and site rules, and stop any test that is unsafe.