Customer Technical Service Engineer (WLP)

Who are we looking for?
We are seeking a Customer Technical Service Engineer – Wafer Level Packaging (WLP) to support our key semiconductor customers in Taiwan.

This role will provide hands-on technical and operational support for WLP customers, including wafer and material logistics, customer trials, basic laboratory experiments, technical troubleshooting, and basic data analysis.

The successful candidate will work closely with key semiconductor customers such as TSMC, ASE, SPIL, Micron, and other leading semiconductor manufacturers, serving as an important technical interface between customers and our Sales, R&D, Product Management, Manufacturing, Quality, and Supply Chain teams.

This is a highly customer-facing role requiring someone who is comfortable working directly at customer sites, managing multiple technical activities, and taking ownership of issues from initial investigation through resolution.

What will you be doing?

• Provide on-site technical support to WLP and semiconductor customers.
• Support product evaluations, qualifications, process trials, and demonstrations.
• Identify customer technical requirements, troubleshoot issues, and coordinate solutions.
• Develop and maintain strong customer relationships with engineering, laboratory, purchasing, and operations teams.
• Coordinate wafer, sample, and chemical logistics for customer projects and evaluations.
• Ensure timely delivery, proper handling, and traceability of wafers, chemicals, samples, and related materials.
• Collaborate with internal functions and external logistics providers to support project execution.
• Investigate chemical and process-related issues at customer sites.
• Collect and analyze process data, wafers, and samples to support root-cause investigations and corrective actions.
• Perform basic laboratory testing, sample preparation, and data analysis following established procedures.
• Coordinate advanced evaluations and analytical work with internal and external laboratories when required.
• Support customer trials from preparation and logistics through execution, reporting, and follow-up.
• Monitor project progress, technical actions, and customer requirements to ensure timely completion.
• Prepare technical reports, trial summaries, and maintain accurate records of activities, materials, and findings.
• Work closely with Sales, R&D, Product Management, Quality, Manufacturing, Supply Chain, and Customer Service teams.
• Communicate customer requirements and technical issues effectively to internal stakeholders.
• Support customer technical discussions and presentations, and escalate critical issues when necessary.
• Ensure high levels of customer satisfaction through effective technical support, problem-solving, and project coordination.

Who are You?

• Bachelor's degree or above in Chemical Engineering, Materials Science, Chemistry, Electrical Engineering, Mechanical Engineering, or a related technical discipline is a plus.
• 2+ years of experience in semiconductor, wafer-level packaging, plating, semiconductor materials, or related technical service roles.
• Experience supporting major semiconductor customers such as TSMC, ASE, SPIL, Micron, or similar Tier-1 semiconductor manufacturers is highly preferred.
• Direct experience in customer technical service, field engineering, process engineering, application engineering, or semiconductor equipment/material support is preferred.
• Basic understanding of WLP, wafer processing, electroplating, semiconductor chemicals, or advanced packaging processes is highly desirable.
• Experience handling wafers, materials, samples, and customer trial logistics.
• Hands-on experience with basic laboratory experiments and technical troubleshooting.
• Ability to work directly with customers and communicate technical issues clearly and professionally.
• Able to manage multiple customer requests, technical projects, and priorities simultaneously.