Process Engineer

Location: Brea, CA — Full Time, Onsite

Our Culture

Winonics has built a strong culture rooted in collaboration, innovation, and employee development. With over 50 years of leadership in the printed circuit board (PCB) industry, the company fosters a supportive and inclusive work environment where employees feel valued and empowered.

Teamwork is at the heart of Winonics, creating a workplace that feels more like a close-knit community. Management is approachable, encouraging open communication and providing hands-on support to ensure success at every level. Employees appreciate the calm and structured work environment, where they receive guidance and mentorship to grow in their careers. Winonics is committed to continuous improvement, investing in both cutting-edge technology and the professional development of its workforce. Whether through skill-building, leadership opportunities, or a focus on quality and efficiency, the company empowers its employees to thrive.

Position Description

We are seeking a Process Engineer to optimize, maintain, and advance the printed circuit board (PCB) fabrication processes in our Brea facility. The role covers everything from implementing supplier-developed processes, installing and validating equipment, defining process parameters, to daily monitoring and improvements to ensure product quality, efficiency, and consistency.

Duties & Responsibilities

• Design, test, and refine PCB fabrication and rework processes, including chemical, plating, etching, finishing, and protective coatings
• Develop and maintain work instructions, Standard Operating Procedures (SOPs), and safety procedures, especially for processes involving hazardous chemicals
• Train operators on new and revised fabrication and rework procedures
• Develop and perform Design for Manufacturability (DFM) to optimize yield, throughput, and cost
• Monitor key process variables daily (e.g. chemical concentrations, plating thickness, etch rates); perform chemical analyses as needed
• Conduct equipment/process validations and produce validation reports
• Review engineering change orders and update process flows, work instructions, and related documentation
• Identify areas for continuous improvement (yield, process stability, cost, safety) and lead improvement projects
• Support root cause investigations for process failures or defects; implement corrective/preventive actions
• Collaborate with cross-functional teams (production, quality, maintenance, engineering) to ensure smooth process flow and meet production targets

Job Qualifications

Required / Preferred

• Bachelor’s degree in Engineering (Chemical, Materials, Electrical, Manufacturing) preferred; or equivalent hands-on experience in PCB or related manufacturing
• 2–5 years of experience in PCB process engineering or related roles involving plating, etching, chemical processes, or finishing
• Strong understanding of PCB fabrication processes (plating, ENIG, etching, cleaning, etc.), process validation, and DFM principles
• Proficiency with data collection, statistical tools, measurement & metrology, quality control, and process monitoring
• Ability to write and review engineering documentation (SOPs, work instructions, safety documentation) clearly and accurately
• Good computer skills including data logging, process control systems, spreadsheets, and reporting tools
• Strong communication skills: ability to train others, interface with operators & engineers, and document process changes and outcomes
• Attention to detail and strong problem-solving ability

Compensation & Benefits

• Salary: $80,000 – $110,000 (depends on experience, education, skills, and role requirements)
• Eligible for performance-based incentives (at management’s discretion)
• Comprehensive medical, dental & vision plans
• Life, accidental death, and disability insurance
• Paid time off & paid holidays

Why Join Winonics?

At Winonics, we invest in our people as much as we invest in innovation. We provide the tools, training, and opportunities for you to grow your career in manufacturing. If you’re looking for a role where you can make a strategic impact, collaborate with top industry professionals, and thrive in a dynamic, growth-oriented environment, we’d love to hear from you!

Apply Now: jobs@winonics.com

Winonics is an ITAR facility and applicants must be U.S. citizens or lawful permanent residents. Winonics is an Equal Opportunity Employer.