Sr. Test Automation Engineer (SIL/HIL Infrastructure)

42dot; Sunnyvale (CA); On-site; USD 110,000 - 150,000; Full time

Job summary

42dot is seeking a Senior / Staff Test Automation Engineer in Sunnyvale, California. The ideal candidate will design and develop automated test frameworks for automotive ECUs. Responsibilities include building HIL test setups and executing multi-environment test suites.

Candidates should possess a Bachelor’s or Master’s degree in relevant fields and have 5+ (Senior) or 8+ (Staff) years of experience in high-integrity embedded systems test automation. Expertise in Python and Bash is essential, along with experience in Docker and automotive protocols.

Qualifications

• 5+ years of hands-on experience in test automation for high-integrity embedded systems.
• Expert-level proficiency in Python and Bash scripting, alongside a practical reading knowledge of C.
• Direct experience architecting or heavily extending modern pythonic test frameworks.

Responsibilities

• Design, build, and maintain scalable automated test frameworks for embedded automotive systems.
• Configure and build custom physical HIL test benches from the ground up.
• Analyze and interpret technical specifications to author comprehensive automated test suites.

Skills

Python

C

Bash scripting

Docker

Automotive protocols (CAN, LIN, Ethernet)

Education

Bachelor’s or Master’s degree in Electrical Engineering, Computer Engineering, Computer Science

Tools

Git

Pytest

OpenHTF

Job description

We are looking for the best

About Us

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.

About 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

• 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.

Qualifications

• 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.

Preferred Qualifications

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

Equal Opportunity Statement

• 42dot does not accept unsolicited resumes and will not pay fees for any such submissions.
• 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.
• Qualified individuals with disabilities are encouraged to apply and will receive consideration under the Americans with Disabilities Act (ADA).
• We strongly encourage applications from U.S. veterans and candidates eligible for employment preference under applicable laws.
• 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 [e-mail].