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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Test Automation Engineer (SIL/HIL Infrastructure - **Company:** 42Dot Inc. - **Location:** San Francisco, CA, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Automation of Tests, Bash Shell, C++ (Programming Language), Computer Programming, Computer Engineering, System Configuration, Continuous Integration, Software Debugging, Linux, Ethernet, Firmware, Hardware-In-The-Loop Simulation, Network Topologies, Python (Programming Language), Network Protocols, ISO/IEC 15504, Requirements Traceability, Software Requirements Analysis, Software Testing Automation Framework, Systems Architecture, Toolchain, Scripting, Git, Pytest, Gitlab-ci, Information Technology, Software Version Control, Docker, Jenkins - **Published:** September 4, 2026 - **Apply:** https://startup.jobs/sr-test-automation-engineer-sil-hil-infrastructure-42dot-8285709 ## About the Role * 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: Advance user-level with Git and modern branch management strategies. * Network & Diagnostic Diagnostics: Deep technical understanding of automotive network protocols (CAN, LIN, Ethernet ## Description 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., * 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. ## Related Videos - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [Continuous testing - run automated tests for every change!](https://www.wearedevelopers.com/videos/190-continuous-testing-run-automated-tests-for-every-change) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Docker build without Docker](https://www.wearedevelopers.com/videos/100114-docker-build-without-docker) ## Related Articles - [The 8 Best Code Testing Tools](https://www.wearedevelopers.com/magazine/402-the-8-best-code-testing-tools) - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [How software is steering vehicle technology](https://www.wearedevelopers.com/magazine/515-how-software-is-steering-vehicle-technology) - [Should senior developers refuse interview coding challenges?](https://www.wearedevelopers.com/magazine/29-should-senior-developers-refuse-interview-coding-challenges) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated)