Senior Engineer, Sustaining Mechanical Engineering

Job Opportunity: Sr. Engineer, Sustaining Mechanical Engineering. 

Location: Ansan, South Korea. 
Division: Materials Solutions (MS) 
Reports To: Director of Fab Technology and Engineering 

Core Purpose of the Role 

The Sustaining Mechanical Engineer will support the installed base of precursor delivery cabinets and chemical distribution modules used in advanced semiconductor manufacturing. This role focuses on hardware reliability, safety compliance, mechanical integrity, and continuous improvement of precursor delivery systems. 

The engineer will work closely with equipment engineering, field service, chemical supply teams, and vendors to ensure safe, stable, and high-availability operation of ALD/CVD precursor delivery hardware. 

Entegris is seeking a highly motivated, customer-centric Global Sustaining Mechanical Engineer to support our deployed Precursor Delivery Systems Product Line globally. This role is essential to ensuring safe, high-quality, and timely installations and upkeep while driving strategic capacity-building initiatives to support our teams, our customers and expand our market presence. 

This role is focused on post-release sustaining of the installed base (reliability, standardization, and safety compliance) and does not own new product development or initial product deployment/commissioning. 

Key Responsibilities 

1. Hardware Sustaining & Tool Ownership 

• Serve as the primary owner for precursor delivery cabinets (PDCs), including gas boxes, vaporizer systems, valve manifolds, and associated mechanical assemblies. 

• Maintain system configuration, BOM accuracy, and mechanical standards across the installed base. 

• Monitor system performance, pressure stability, flow characteristics, leak rates, and mechanical wear. 

• Evaluate and qualify replacement parts, upgraded hardware, and new precursor delivery components. 

2. Mechanical Reliability & Safety 

• Ensure all precursor delivery systems meet safety standards—including pressure integrity, leak rate spec, interlocks, hazardous chemical protocols, and cleanroom safety requirements. 

• Conduct mechanical health assessments (e.g., regulator performance, heater uniformity, seal condition, valve actuation). 

• Lead investigations of mechanical failures such as leaks, component degradation, flow restrictions, and thermal nonuniformities. 

• Partner with EHS teams to ensure compliance with chemical handling regulations and cabinet safety certifications. 

3. Troubleshooting & Root Cause Analysis 

• Support internal field and operations teams by analyzing hardware escalations, cabinet alarms, abnormal pressure/flow conditions, and precursor delivery interruptions. 

• Perform structured problem solving (5Why, Ishikawa, DMAIC, 8D) to identify root causes of failures. 

• Work with technicians and field service to develop corrective and preventive actions. 

• Drive issue resolution with OEMs and component suppliers when needed. 

4. Continuous Improvement & Hardware Upgrades 

• Identify opportunities to improve system uptime, extend component life, reduce maintenance frequency, and improve costofownership. 

• Support retrofit projects (e.g., new valve types, improved vaporizers, heater redesigns, cabinet layout optimization). 

• Create/Support engineering change orders (ECOs), mechanical drawings updates, and controlled configuration changes. 

• Evaluate new precursor chemistries and assess mechanical compatibility (materials, thermal stability, corrosion risks). 

5. Technical Documentation & CrossFunctional Support 

• Develop and maintain Best Known Methods (BKMs), mechanical procedures, troubleshooting guides, and safety documentation. 

• Provide training to technicians, manufacturing personnel, and sustaining engineers on safe and proper handling of delivery systems. 

• Provide engineering standards, documentation, and technical guidance for installation and acceptance activities executed by Field Service and Manufacturing teams (as applicable). 

• Communicate performance trends, reliability risks, and improvement plans to the sustaining team leadership. 

Qualifications 

Required 

• Bachelor’s degree in Mechanical Engineering, Chemical Engineering, Materials Engineering, or related discipline. 

• 5–10+ years of experience working with gas delivery systems, chemical delivery hardware, or mechanical systems in semiconductor or related highpurity environments. 

• Strong understanding of:  

• Pressure systems, regulators, fittings, valves 

• Thermal management and temperaturecontrolled delivery systems 

• Highpurity gas and chemical handling 

• Mechanical reliability and failure analysis 

• Demonstrated troubleshooting skills with mechanical assemblies and fluid/thermal systems. 

• Ability to work handson in a cleanroom or chemical delivery environment. 

• Ability to travel internationally up to 60%. 

• English proficiency required. 

Preferred 

• Experience with ALD/CVD precursor delivery (solid, liquid, heated lines, bubblers, vaporizers). 

• Familiarity with MOCVD or semiconductor gas cabinets, VMBs/VMPs, and highpurity chemical distribution. 

• Strong understanding of chemical compatibility, corrosion, materials of construction, and safety standards. 

• Experience using CAD tools (SolidWorks, Creo, AutoCAD) for mechanical component review. 

• Knowledge of data analysis tools (JMP, Python, Excel) for performance trending. 

Key Competencies 

• Strong mechanical aptitude and handson problem solving 

• High commitment to safety and regulatory compliance 

• Clear communication and crossfunctional collaboration 

• Analytical mindset with attention to detail 

• Ability to work independently and drive improvement projects 

Success Metrics 

Success in this role is measured not only by project outcomes but also by how those outcomes are achieved. Key competencies include: 

• Safety First: Promote and maintain a safe work environment. 

• Team Building and Collaboration: Share knowledge and support team success. 

• Accountability: Take ownership of tasks and deliver results. 

• Customer Centricity: Prioritize customer needs and satisfaction. 

• Adaptability: Thrive in a fast-paced, evolving environment. 

• Communication: Effectively engage across all levels of the organization and with customers. 

Why Join Us? 

• Be part of a global leader in advanced materials and delivery systems. 

• Work on high-impact projects with cross-functional and international teams. 

• Drive innovation and capacity growth in a critical industry sector. 

• Enjoy competitive compensation, professional development, and global exposure.