Test Engineering Manager
Flex · California
- Level
- Manager
- Team
- Manufacturing
- Degree
- Required
- Experience asked
- 5+ years
- Industry
- Industrial
- Posted
- 30+ days ago
The role in 30 seconds
A management manufacturing role at Flex (industrial) in California. Additionally, the Testing Supervisor will monitor the work performed by the test technicians, and work with them to identify and troubleshoot critical issues.
- They ask for
- 5+ years · degree required
Read from the posting. The full description is below.
From the plant jobs report · week of October 19, 2026
Manufacturing Engineer roles in California: typical posted base $114k–$167k.
Median of the low and high ends of 117 live postings that list pay, out of 320 manufacturing engineer openings in California, read from manufacturers' own careers sites.
California plant jobs report →Pay by team and state →What moves pay →
How this role compares
Against 319 other live manufacturing postings in California.
- Base pay
- Not listed in this posting
- Experience asked
- Typical (5+ years)
Typical $111k–$157k, from 105 postings that list pay.
Similar roles usually ask 5+ years.
Skills these teams ask for most
- Tooling 53%
- New product launch 51%
- Root cause 40%
- Automation 35%
- Machining 29%
- CATIA / NX 29%
✓ = this posting asks for it too. % = share of similar postings that mention it.
At a glance
Pulled from the posting text. If it's not listed here, the posting didn't say.
How to get in at this plant
Five moves over a week or two. The first one takes ten minutes.
- 1
Pick 2–3 people on the Manufacturing team at Flex
Engineers who joined in the last year or two reply the most. Use the team search on this page to find them.
- 2
Send a short, curious note
One real question about their work. No favors yet. Each person gets a different note, written for this role.
- 3
Turn a reply into a short call
Questions worth asking about this team:
- What does a normal week look like on your team?
- Is the work mostly new product launches or sustaining existing lines?
- How much time do you spend on the floor versus at a desk?
- How did you land the job? What stood out in your interviews?
- 4
Apply with someone vouching for you
If the call went well, ask whether they’d pass your résumé to the hiring manager. Send your résumé link, apply that day, and let them know.
- 5
Bring proof to the interview
One page of before-and-after numbers from projects you led: scrap, OEE, cycle time, cost. Plant managers hire on results.
Full description from FlexAs posted on their careers site.ShowHide
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 in Fontana, CA.
Reporting to the Director, 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.
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
Show full description ↓Show less ↑
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.
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.
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