Embedded Software Engineer

Job Description

Embedded Software Engineer – Junior / Mid-Level

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Location: Carlsbad, CA (Onsite)

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Employment Type: Full-Time, Direct Hire

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Compensation: Competitive, Based on Experience

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About the Opportunity

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CDM Technology is partnering with an electric vehicle manufacturer in Carlsbad to hire a hands-on engineer for battery management system (BMS) and vehicle control system test and calibration.

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You'll work alongside senior BMS engineers who own the requirements and architecture. You'll be the one in the lab: running the test benches, automating tests, producing calibration data, and debugging hardware with a scope in hand. You'll also write code, including fixes to the BMS itself.

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No automotive or BMS experience required. We'll train someone with solid fundamentals and real lab time, whether from medical devices, robotics, industrial automation, aerospace, or consumer electronics.

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What You'll Be Doing

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• Run BMS and vehicle control system test benches, including battery emulation, high-voltage fixtures, and CAN tools.
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• Write and run test procedures against the Vehicle requirements.
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• Automate bench tests in Python.
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• Validate calibration data (limit tables, derating curves, protection thresholds) from battery and vehicle testing.
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• Track down hardware and software faults, including intermittent ones, with scopes, logic analyzers, and bus captures.
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• Inform and Fix BMS and vehicle control code in C/C++, with peer review and tests.
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• Help validate high-voltage protection: contactors, precharge, interlocks, isolation monitoring, and pyro disconnect.
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• Bring up new circuit boards.
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• Support vehicle integration, fleet issues, and end-of-line testing.
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• Flag gaps in the requirements to the senior engineers when testing turns them up.
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• Use AI-assisted development tools day to day.
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What We're Looking For

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• Bachelor's in Electrical Engineering, Computer Engineering, Computer Science, or related field.
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• 1–5 years in embedded software, test, or validation. Strong new grads with relevant internships or projects considered.
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• Agentic coding in C, C++ and Python, well enough to read, debug, and modify embedded firmware.
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• Test automation or data analysis.
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• Hands-on with lab equipment: power supplies, meters, scopes, logic analyzers.
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• Can read schematics and datasheets, or is eager to learn.
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• Willing to learn high-voltage safety and work around HV battery systems.
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• Onsite in Carlsbad, CA.
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• Able to travel internationally, including to China: up to 2 weeks, 1–2 times a year.
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Nice to Have

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• Hands-on high-voltage battery or electrical systems experience.
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• Battery cell or pack testing.
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• CAN and DBC files; SPI, I2C, UART.
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• Bare-metal or RTOS firmware.
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• Hardware-in-the-loop testing or battery emulation.
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• Formal test procedures with requirements traceability.
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• Functional safety exposure.
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• Linux, Git, Jira.
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• Production or end-of-line test.
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• AI coding tools such as Claude Code, Cursor, or GitHub Copilot.
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A Modern Approach to Engineering

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Our client uses AI-assisted development across its engineering work. Experience with these tools is a plus; curiosity about them matters more.

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Why This Opportunity?

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Hands-on work on electric vehicle battery systems, mentorship from experienced BMS engineers, and ownership of the tests and calibration data the vehicle runs on.

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Interested? Apply through CDM Technology. All inquiries are confidential.