Test Engineer

About the role

Crown Technical Systems, a Flex Company, is a leader in power distribution and protection systems concentrating on sophisticated, state-of-the-art relay and control panels, medium voltage switchgear, and enclosures (power/control buildings/ E-Houses). We specialize in customized, turn-key solutions that ensure safe, secure, and reliable power distribution.

Working at Crown Technical Systems offers a dynamic and rewarding career path for individuals seeking to power the world. Through hands-on training, mentorship, and a culture of internal promotion, we empower you to reach your full potential and contribute to projects that truly matter.

Job Summary

Flex intends to spin off its Cloud and Power Infrastructure segment into a new, independent publicly traded company, Axiom, with the spin planned for Q1 2027. If the intended spin occurs, this role will support Axiom, a company focused on critical digital infrastructure and delivering end-to-end power and thermal management solutions for AI data centers and other mission-critical applications.

To support our extraordinary teams who build great products and contribute to our growth, we're looking to add a Test Engineer located in Fontana, CA.

Reporting to the Electrical Engineering Manager, the Test Engineer will be responsible for fulfilling testing requirements for manufacturing projects while meeting schedule requirements. The Electrical Test Engineer will contribute to the overall testing of manufacturing projects related to relay panels, control buildings, and medium voltage switchgears.

What a typical day looks like

• Maintains testing schedule per Crown project schedule and production schedule in partnership with Production Leaders and Engineering Department.
• Monitors testing status daily; gathers feedback from all test technicians.
• Reviews project specifications and implement testing procedures to comply with project requirements.
• Reviews test plans of all projects against schematics with test technicians before submittal.
• Maintains test folder for all projects with relevant test reports, test drawings, and test pictures.
• Reviews and maintains testing equipment list with Test Technicians.
• Creates and maintains test procedures, including testing forms.
• Performs power testing of protective relay panels, medium voltage switchgear line-ups, test communication, and HMI components on the relay panel. Testing also involves panel boards, automatic transfer switches, fire alarm systems, air conditioning, and other power distribution components.
• Leads problem-solving initiatives to analyze quality failures and help drive quality improvements (ex. ways to improve the efficiency of testing to reduce the time required).
• Ensures all team members follow testing standards and safety procedures; promptly report and investigate all quality failure incidents.
• Works with Lead Engineer and assists with other related project tasks.
• Perform all other duties, as assigned.

What you'll receive for the great work you provide

• Full range of medical, dental, and vision plans
• Life Insurance
• Short-term and Long-term Disability
• Matching 401(k) Contributions
• Vacation and Paid Sick Time
• Tuition Reimbursement

Application Deadline

Applications for this job position will be accepted for at least five days following the job posting start date below and continuing until the end date below or until the position is filled. This posting may close sooner due to application volume.

Job Posting Start Date 11-05-2026 Job Posting End Date 01-01-2027

The base pay range for this position is provided below. The final base rate offered will be determined using job-related, non-discriminatory criteria, including but not limited to experience, qualifications, geographic location, education, external market data, and internal equity.

• $65,200.00 USD - $89,600.00 USD Annual
• Job Category
• Production Engineering
• Relocation: Not eligible
• Is Sponsorship Available?
• No