Principal Test Engineer - System Test

Job Overview

At Western Digital, our vision is to power global innovation and push the boundaries of technology to make what you thought was once impossible, possible. We are a company of problem solvers, achieving extraordinary things with the right technology. Our technologies have helped put a man on the moon and capture the first-ever image of a black hole.

• Using sound test engineering principles, knowledge of the product and technology to ensure the product meets functional and customer requirements and is ready to ship on schedule.
• Owns product validation regarding test plan definition, test plan execution, and primary lead in failure analysis.
• Primary lead in performing performance characterization of the product and tracking down any observed anomalies.
• Contributes to overall test schedule development.
• Writes the test plans for new product features, generates test matrices, test reports, and other relevant test documentation required for flawless program execution.
• Defines new tests based on customer feedback and defect fixes.
• Executes existing/regression test cases for the project during the entire product development cycle.
• Works closely with other system test, hardware, ASIC, and firmware engineers to improve test methodology and develop new tests and strategies.
• Configures customer hardware and software systems; troubleshoots problems to get to root cause.
• Maintains customer and test equipment to current revision.

• BS/BS/MS degree in Engineering, Computer Science, or related engineering discipline.
• Minimum of 5+ years of experience in Storage and Networking.
• Programming experience utilizing Python or other scripting languages.
• Strong knowledge of networking protocols.
• Experience with storage NVMe.
• Working knowledge of Linux.
• Experience in automation.
• Experience with secure boot, secure firmware download, secure debug, authentication, attestation, data in flight encryption, IPsec (transport and tunnel modes), TLS 1.3, asymmetric and symmetric cryptography (e.g., AES‑GCM), and quantum‑safe cryptography.
• Bonus:
  Secure development process, penetration testing experience.

Western Digital is committed to providing equal opportunities to all applicants and employees and will not discriminate against any applicant or employee based on race, color, ancestry, religion, sex, gender, age, national origin, sexual orientation, medical condition, marital status, disability, military status, or other legally protected characteristics. We also prohibit harassment of any individual based on the above characteristics. Our non‑discrimination policy applies to all aspects of employment.

We comply with the laws and regulations set forth in the "Know Your Rights:
Workplace Discrimination is Illegal" poster. Our pay transparency policy is available here.

Western Digital supports accessibility for applicants with disabilities. Contact us at  to advise us of your accommodation request, including a description of the specific accommodation, job title, and requisition number.

Final date to receive applications: 1/18/26 (may close earlier if the position is filled).

• Salary ranges based on education, qualifications, certifications, experience, skills, performance, location, shift, and business needs.
• Range applies to California, Colorado, New York, or remote positions in those states.
• Non‑exempt positions may be eligible for overtime; shift differential pay may apply.
• Eligible for bonuses under Western Digital short‑term incentive or sales incentive plans; may participate in long‑term incentive programs per company policy.
• Comprehensive benefits: vacation, sick leave, medical/dental/vision, life/accident/disability insurance, flexible spending and health savings accounts, employee assistance, additional voluntary benefits, tuition reimbursement, transit, Applause Program, employee stock purchase, 401(k).
• Note:
  
  Pay, bonus, and benefits are at the company's discretion and may be modified.

Western Digital and its subsidiaries will never request payment as a condition for applying or receiving an offer of employment. Report any such request to the Western Digital Ethics Helpline or

Mid‑Senior level

Full‑time

Computer Hardware Manufacturing, Computers and Electronics Manufacturing, and Semiconductor Manufacturing

Roseville, CA

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