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

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add a Senior Process Engineer – Critical Repairs located in Guadalajara, North Campus
Reporting to the Process Engineer Manager, this role involves responsibilities for process-engineering capabilities focused on cost, quality and delivery improvements in order to support a PCBA manufacturing organization.

What a typical day looks like:

• Define, implement, and control critical repair processes for electronic assemblies (PCBA) in SMT, ICT, backend, and functional test lines.
• Perform root‑cause analysis using 8D, RCA, Ishikawa Diagram, Pareto, and Process FMEA.
• Establish repair criteria and rework limits according to IPC standards and customer requirements.
• Validate equipment, tools, thermal profiles, and repair methods.
• Provide technical support to Production, Quality, NPI, and Test during line‑down events or quality escapes.
• Ensure complete traceability of critical repairs within the manufacturing system.
• Develop, update, and release work instructions, visual aids, and process documentation.
• Train, evaluate, and certify repair technicians according to IPC‑7711/7721.
• Actively participate in internal, customer, and certification audits.
• Approve or reject critical repairs on in‑process and finished products.
• Define scrap needs when product reliability—electrical or mechanical—is compromised.
• Stop production flow when quality risks or non‑compliance to standards are detected.
• Approve temporary process deviations in conjunction with the Quality team.

Experience we’re looking to add to our team:

• Bachelor’s degree in Electronics, Mechatronics, Industrial Engineering, or related field (degree required).
• 3–8 years in electronic manufacturing processes, with a focus on critical repair or process engineering.
• SMT and PHT processes.
• Creation of profiling cards.
• Creation and interpretation of repair profiles and temperature curves.
• Operation and maintenance of rework equipment such as SRT, mini‑wave, AIR‑VAC, soldering stations, among others.
• Advanced PCBA repair (BGA, QFN, LGA, fine‑pitch components, pads and traces).
• IPC standards: IPC‑7711/7721, IPC‑A‑610, J‑STD‑033, J‑STD‑020.
• ESD control in electronic manufacturing environments.
• Lean, 5W, SPC, PFMEA, flowcharting, and root‑cause analysis.

What you’ll receive for the great work you provide:

• Competitive Salary.

• Life & Medical insurance.

• Christmas Bonus.

• Food Coupons.

• Saving Fund.

SC69

Job Category

Production Engineering

Required Skills:

Optional Skills:

Flex 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 accessibility@flex.com 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).