We are seeking a highly skilled Software QA / Test Automation Engineer to validate our next-generation connected vehicle ecosystem. In this role, your primary scope will span mobile-to-cloud and cloud-to-vehicle environments. You will design and execute test strategies at both the component level and end-to-end (E2E), ensuring the seamless flow of data across mobile apps, cloud services, vehicle middleware, and hardware interfaces.
The ideal candidate possesses a strong white-box testing mindset, deep experience with Python-based API automation, and hands-on familiarity with IoT/automotive messaging protocols like MQTT and Protobufs (protos). Key Responsibilities

• End-to-End & Component Validation: Design, develop, and execute comprehensive test strategies for RESTful APIs, cloud microservices, and vehicle interfaces. Validate end-to-end data flows from mobile applications, through backend cloud services, down to vehicle hardware.
• Protocol & Messaging Testing: Validate high-frequency, low-latency data transport, serialization, and messaging layers, specifically working with MQTT brokers and Protobuf (protos) payloads.
• Middleware & VHAL Integration: Test and verify internal vehicle middleware services, signal translations, and the Vehicle Hardware Abstraction Layer (VHAL) to ensure seamless hardware/software interaction.
• Test Automation Development: Design, scale, and maintain robust test automation frameworks using Python(e.g., PyTest, Requests) to maximize test coverage and reduce manual regression efforts.
• Deep-Dive Troubleshooting: Perform root-cause analysis of complex, distributed system failures. Utilize system logs, network traces, metrics, and debugging tools to isolate issues across cloud services, networks, and vehicle ECUs.
• CI/CD & Continuous Testing: Integrate automated test suites into CI/CD pipelines (e.g., GitHub Actions, Jenkins) to support continuous validation of cloud and embedded software releases.
• Robustness & Edge-Case Testing: Analyze system behavior and data integrity across platform upgrades, network transitions, power cycles, and complex state changes.

Required Skills & Experience

• Connected Ecosystems: Proven experience validating complex, distributed "system-of-systems" products, with a specific focus on mobile-to-cloud and cloud-to-vehicle communication flows.
• Testing Granularity: Deep understanding of how to perform both isolated component-level testing (mocking dependencies where necessary) and integrated end-to-end (E2E) testing.
• Protocols & Serialization: Hands-on experience working with MQTT messaging and Protobufs (protos)serialization formats.
• Middleware & VHAL: Experience validating vehicle middleware, signal routing, and hardware/software abstraction layers (VHAL).
• Python Automation: Strong programming skills in Python with practical experience building automation frameworks for API, backend, and data validation.
• White-Box Testing Mindset: Ability to analyze system architecture, internal data flows, and code dependencies to design highly targeted, risk-based test plans.
• Technical Debugging: Excellent triaging skills with the ability to produce actionable defect reports containing precise reproduction steps, logs, traces, and payload analyses.
• Environment Experience: Strong familiarity with Linux environments, command-line tools, system services, and basic networking configurations.

Estimated Min Rate: $60.00
Estimated Max Rate: $90.00

What’s In It for You?
We welcome you to be a part of the largest and legendary global staffing companies to meet your career aspirations. Yoh’s network of client companies has been employing professionals like you for over 65 years in the U.S., UK and Canada. Join Yoh’s extensive talent community that will provide you with access to Yoh’s vast network of opportunities and gain access to this exclusive opportunity available to you. Benefit eligibility is in accordance with applicable laws and client requirements. Benefits include:

• Medical, Prescription, Dental & Vision Benefits (for employees working 20+ hours per week)
• Health Savings Account (HSA) (for employees working 20+ hours per week)
• Life & Disability Insurance (for employees working 20+ hours per week)
• MetLife Voluntary Benefits
• Employee Assistance Program (EAP)
• 401K Retirement Savings Plan
• Direct Deposit & weekly epayroll
• Referral Bonus Programs
• Certification and training opportunities

Note: Any pay ranges displayed are estimations. Actual pay is determined by an applicant's experience, technical expertise, and other qualifications as listed in the job description. All qualified applicants are welcome to apply.

Yoh, a Day & Zimmermann company, is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.

Visit https://www.yoh.com/applicants-with-disabilities to contact us if you are an individual with a disability and require accommodation in the application process.

For California applicants, qualified applicants with arrest or conviction records will be considered for employment in accordance with the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. All of the material job duties described in this posting are job duties for which a criminal history may have a direct, adverse, and negative relationship potentially resulting in the withdrawal of a conditional offer of employment.

It is unlawful in Massachusetts to require or administer a lie detector test as a condition of employment or continued employment. An employer who violates this law shall be subject to criminal penalties and civil liability.

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