Sr Engineer, Quality Assurance Engineering

Job Title:

Sr Engineer, Quality Assurance Engineering

Job Description:

The Role:

Entegris is currently seeking a Senior Engineer, Quality Assurance Engineering to join our Advanced Purity Solutions (APS) Division at our San Luis Obispo, CA facility. This is a full-time, on-site opportunity within the Quality Engineering family and technical career framework  this role, you will serve as a key quality leader supporting manufacturing and operational excellence across APS gas purification products and processes.

The work is dynamic and cross-functional, involving regular interaction with and presentations to manufacturing, engineering, operations, supply chain, supplier quality, and leadership teams. This is a high-impact, highly visible position requiring the ability to manage multiple priorities, influence without direct authority, and drive resolution of complex quality and business challenges. Responsibilities include supporting manufacturing quality, process control, nonconformance management, and continuous improvement initiatives across APS products serving the semiconductor industry.

The successful candidate will operate with a high degree of autonomy.

• Lead cross-functional teams in resolving manufacturing, process, and product quality issues using structured problem-solving methodologies such as 8D, 5-Why, and Fishbone Analysis.
• Champion plant quality escalation management efforts, coordinating stakeholders and applying project management principles to drive timely containment, corrective actions, and sustainable improvements.
• Lead CAPA activities, including root cause verification, corrective action implementation, effectiveness reviews, and closure management.
• Own and improve plant quality notification, nonconformance, MRB, and defect tracking processes to ensure timely resolution and visibility of quality risks.
• Develop and maintain quality dashboards, scorecards, and reporting systems to monitor manufacturing performance, yield, scrap, rework, defect trends, and process capability.
• Analyze quality data and manufacturing trends to identify systemic issues, prioritize improvement opportunities, and strengthen risk-based decision making.
• Serve as a quality representative for Material Review Board (MRB) activities, driving effective disposition of nonconforming material and ensuring appropriate risk assessment.
• Lead and support manufacturing process improvement initiatives focused on defect reduction, process capability, operational efficiency, and product quality performance.
• Support New Product Introduction (NPI) readiness activities, including review of Control Plans, Process FMEAs, process validations, inspection strategies, and production quality requirements.
• Support process change management activities, including quality risk assessments, manufacturing process changes, transfers, and implementation of Process Change Notifications (PCNs) where applicable.
• Support development, implementation, and continuous improvement of process control systems, metrology programs, measurement system analysis (MSA), and statistical process control (SPC) methodologies.
• Partner with manufacturing and engineering teams to improve process robustness, reduce variation, and strengthen quality ownership throughout production operations.
• Support internal audits, external audits, compliance activities, and quality management system requirements.
• Coach and mentor engineers, technicians, and cross-functional teams in quality principles, structured problem solving, and continuous improvement methodologies.
• Demonstrate willingness to complete miscellaneous tasks as assigned in support of the larger organization and site production goals.
• Act as a champion of the Entegris quality culture by influencing best practices and driving adherence to established quality policies, procedures, and standards without direct authority.
• Demonstrate excellence in planning, execution, discipline, learning, leadership, and teamwork while exemplifying Entegris PACE values.
• Travel occasionally as needed to support training, global operations, benchmarking activities, and business requirements.

• Bachelor of Science degree in Mechanical Engineering, Electrical Engineering, Manufacturing Engineering, Semiconductor Engineering, Quality Engineering, or a related technical field.
• 4-6 years of professional experience in engineering, manufacturing, quality, or a related technical discipline, preferably within a manufacturing environment.
• Proven experience…