Chemical/Process Engineer - Powder Coating & Surface Treatment - (108059)

Sanmina Corporation (Nasdaq: SANM) is a leading integrated manufacturing solutions provider serving the fastest-growing segments of the global Electronics Manufacturing Services (EMS) market. Recognized as a technology leader, Sanmina Corporation provides end-to-end manufacturing solutions, delivering superior quality and support to Original Equipment Manufacturers (OEMs) primarily in the communications networks, defense and aerospace, industrial and semiconductor systems, medical, multimedia, computing and storage, automotive and clean technology sectors. Sanmina Corporation has facilities strategically located in key regions throughout the world.

Job Title: Chemical/Process Engineer - Powder Coating & Surface Treatment

Location: Houston, TX
Reports to: Plant Manager

The Chemical/Process Engineer will be the subject matter expert responsible for the development, optimization, and control of the industrial powder coating and chemical pre-treatment processes. This role ensures the paint line operates at peak efficiency, maintains the highest quality finish standards, and adheres to strict safety and environmental regulations. The engineer will play a critical role in commissioning, auditing, and continuous improvement projects for automated coating systems. Key Responsibilities

Process Development and Optimization

• Design and Implement: Develop, document, and standardize optimal process parameters (e.g., fluid dynamics, temperature, pressure, dwell times) for all stages of the powder coating line.

• System Upgrades: Lead technical efforts for the renovation and integration of new equipment sections, such as new paint booths, conveyor systems, and automated greasing mechanisms.

• Automation: Optimize performance of advanced coating technology, including automated paint booths with 3D axis independent movement guns, to maximize coverage and minimize manual touch-up.

• Pre-Treatment Chemistry: Expertly manage and optimize the multi-stage chemical pre-treatment process, with a focus on Zirconium (Zr) chemistries (e.g., Kleen 820 HP, Zirca-Sil®18) over traditional iron phosphate, to ensure superior adhesion and corrosion resistance.

  • Track and control chemical bath concentrations (e.g., Stage 1 Degreasing, Stage 2 Rinsing, Zirca Additive stages) and water quality (DI Rinse).

  • Support the transition and qualification of Zirconium systems across different plants.

Quality, Audit, and Troubleshooting

• Failure Analysis: Actively troubleshoot and implement corrective actions for coating defects (e.g., adhesion, inconsistent film thickness, color variation, yellowing).

• Cure Parameters: Closely monitor and manage oven and part temperatures (e.g., dry-off and curing ovens) to ensure proper powder cure within material specifications, and investigate deviations (e.g., parts running under cure temp of 170C).

• Testing: Conduct and oversee rigorous performance testing, including salt spray tests for conditional and final product approvals.

• Documentation: Create and maintain detailed Standard Operating Procedures (SOPs), process control plans, and technical audit reports for all paint operations.

Environmental, Health, and Safety (EHS)

• Compliance: Ensure the powder coating operations comply with all local, state, and federal environmental and safety regulations.

• Sustainability: Support and maintain systems that promote sustainable manufacturing, such as Net Zero Carbon and fully electric paint lines.

• E-Room Management: Maintain a complete Environmental Room (E-Room) with controlled air conditioning and humidity for the powder spraying area.

Required Qualifications

• Education: Bachelor’s degree in Chemical Engineering, Materials Science, or a related field.

• Experience: 5+ years of experience as a Process Engineer, Chemical Engineer, or Coating Engineer in a high-volume industrial manufacturing environment.

• Technical Expertise:

  • Demonstrated expertise in industrial powder coating application and curing processes.

  • Strong knowledge of pre-treatment chemistries, specifically Zirconium or similar conversion coatings.

  • Experience with automated paint line equipment and process control systems.

• Core Competencies:

  • Excellent analytical and problem-solving skills (DOE, Root Cause Analysis).

  • Proficiency in project management, including managing vendors and cross-functional teams to deliver capital projects on time and within budget.

  • Strong communication skills to provide technical guidance and training to production staff.

This is an ITAR facility and applicant must be a US Citizen or a lawful permanent resident. 

Sanmina is an Equal Opportunity Employer – M/F/Veteran/Disability/Sexual Orientation/Gender Identity