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Sr. Test Automation Engineer (SIL/HIL Infrastructure)

42dot, Sunnyvale

Posted pay

$185K–$250K

a year

Location: Sunnyvale
Work type: Not given
Level: Senior
Experience: 8+ years
Skills in the job text: Python
Docker
C++
Bash
C
Linux
Posted: Jun 19, 2026
Last check: 5 h ago
Job type: Infra, platform & SRE

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42dot

About 42dot: funding, hiring and pay

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The role

As a Senior / Staff Test Automation Engineer you will design, develop, and execute automated test frameworks for complex automotive Electronic Control Units (ECUs) and virtual ECUs (vECUs). This role bridges the gap between low-level firmware and high-level vehicle applications. You will own the end-to-end automation pipeline across Software-in-the-Loop (SIL) and Hardware-in-the-Loop (HIL) environments, which includes building custom HIL testing stations from scratch.

Operating within a GNU/Linux ecosystem, you will investigate complex system requirements to develop robust, fail-safe test content for our next-generation Software-Defined Vehicle (SDV) platform. Responsibilities

What you will do

Automation Framework Development: Design, build, and maintain scalable automated test frameworks and scripts for embedded automotive systems using Python and C/C++.
HIL Bench Generation: Configure and build custom physical HIL test benches from the ground up, integrating real vehicle ECUs with simulated real-time environment models.
Requirements Investigation: Analyze and interpret technical specifications to author comprehensive automated test suites, actively tracking down gaps in system requirements.
Multi-Environment Execution: Execute automated test suites across SIL, MIL, and HIL setups.
Analyze test captures, isolate low-level system failures, and generate detailed engineering reports.
Protocol Verification: Validate automotive communication networks, network topologies, and diagnostic routing (e.g., CAN-FD, LIN, Automotive Ethernet, UDS, DoIP).
CI/CD Integration: Integrate automated test loops directly into Git-driven CI/CD pipelines (such as GitLab CI or Jenkins) to support high-frequency regression farm execution.
Cross-Functional Collaboration: Partner with Firmware, Systems Architecture, Quality, and TPM teams to define test specifications and maintain complete ASPICE-compliant requirement traceability.

What you need

Education: Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, Computer Science, or a related field.
Experience: 5+ years (Senior) or 8+ years (Staff) of hands-on experience in test automation for high-integrity embedded systems.
Programming Mastery: Expert-level proficiency in Python and Bash scripting, alongside a practical reading knowledge of C for code-level debugging.
Automation Toolchains: Direct experience architecting or heavily extending modern pythonic test frameworks (such as Pytest or OpenHTF).
Containers: Experience with Docker

Nice to have

Linux Expertise: Advanced user-level comfort navigating, configuring, and scripting within GNU/Linux environments.
Version Control: Advance user-level with Git and modern branch management strategies.
Network & Diagnostic Diagnostics: Deep technical understanding of automotive network protocols (CAN, LIN, Ethernet

Interview Process

Application Review – Coding Test - 1st interview - 2nd interview - Offer Negotiation - Hiring
The screening procedures may vary depending on the position, schedule, or other circumstances.

You will be individually notified of the screening schedule and results via the email address provided in your application.

Additional Information

In accordance with fair hiring practices, do not include any personal information unrelated to your job qualifications (e.g., Social Security Number, family relations, marital status, age, photo, physical condition, place of birth, etc.) in your resume.
All documents must be submitted in PDF format and under 30MB in size.
If you experience issues uploading your resume, please send it along with the job posting URL to recruit@42dot.ai.
We strongly encourage applications from U.S. veterans and candidates eligible for employment preference under applicable laws.
Qualified individuals with disabilities are encouraged to apply and will receive consideration under the Americans with Disabilities Act (ADA).
42dot does not accept unsolicited resumes and will not pay fees for any such submissions. Equal Opportunity Statement
42dot is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees, regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or veteran status.

※ Please review the following information before applying.

How to work in 42dot, About 42dot Way → https://42dot.ai/careers/way

Pay and benefits

$185,000 - $250,000

About 42dot

42dot is a mobility AI company committed to solving mobility challenges with software and AI. As the Global Software Center of Hyundai Motor Group, 42dot pioneers the future of mobility by advancing the development of software-defined vehicles.

We develop safety-first, user-centric software-defined vehicle technologies that deliver the latest performance through continuous updates like smartphones. By advancing software and AI technology, 42dot envisions a world where everything is connected and moves autonomously through a self-managing urban transportation operating system.

Read the job posting on the 42dot site

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Source: the 42dot Ashby job board. We last checked this job 5 h ago. We first saw it 6 days ago. A job on a job board does not always mean that the team interviews people now. We found this job board in a public list. We did not yet compare it with the careers page of the company.

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42dot

Open tech jobs: 80
With posted pay: 24%
Median posted base: $175K–$254K

About 42dot: funding, hiring and pay

Compared with similar jobs

This base pay is near the median for senior infrastructure, platform and SRE jobs in the Bay Area.

Median: $214K a year
Other jobs in the group: 632

We compare the middle of each posted range. This is base pay as posted. The group does not include this job.