Test Engineering Manager

Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world.A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary.

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/an Test Engineering Manager located inFontana, CA.

Reporting to theDirector, Design & Engineering the Test Engineering Manager will be responsible for leading the team responsible for testing substation control house projects while meeting budgetary and schedule requirements. Additionally, the Testing Supervisor will monitor the work performed by the test technicians, and work with them to identify and troubleshoot critical issues.

What a typical day looks like:

• Maintains testing schedule per Crown project schedule and production schedule with guidance from the Electrical Engineering Manager.

• 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 testing commences.

• Reviews test reports and testing schematics for completion and adherence to Crown’s testing procedures/work instructions.

• Maintains physical copies of all completed test reports and testing schematics and makes sure the same are uploaded to the project folder in a timely manner.

• Reviews and maintains testing equipment list with Test Technicians.

• Creates and maintains test procedures, including testing forms.

• 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.

• Ensures work areas are kept clean, organized, and safe.

• 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.

• Perform all other duties, as assigned.

The experience we’re looking to add to our team:

• Technical degree in electrical technical field.

• Prior hands-on experience performing AC/DC functional testing on protection relays, MV switchgear, MV breaker, and arc flash.

• 5+ years of related work experience.

• Experience leading or managing a team of technicians.

• Knowledge of Electrical Safety Procedures, NEC, IEEE Codes.

• NETA Certification a plus.

EC37

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 09-15-2026 Job Posting End Date 11-02-2026

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.

$122,600.00 USD - $168,600.00 USD Annual

Job Category

Production EngineeringRelocation: Eligible for domestic relocation only

Is Sponsorship Available?

YesFlex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).