Senior AOI Engineer

ASE Global; Bayan Lepas; On-site; MYR 60,000 - 100,000; Full time

Job summary

ASE Global in Penang, Malaysia seeks an AOI Engineer to develop, optimize, and maintain automated inspection systems used in PQFN semiconductor assembly. The role focuses on accuracy, reducing false calls, and supporting yield and quality improvements.

You will collaborate with Process, Manufacturing, Equipment, and Quality teams to ensure AOI monitors critical assembly steps and supports production efficiency.

Qualifications

• Degree in Electronics / Electrical / Chemical / Mechanical Engineering is required.
• Desirable knowledge of SPC, FMEA, DOE, TPM, OCAP, JMP, RCA and Control Plan.
• Experience with die attach process equipment is highly preferred.

Responsibilities

• Develop, optimize, and validate AOI programs for PQFN assembly processes.
• Tune inspection parameters to maximize defect detection and minimize false rejects.
• Support AOI setup for new PQFN package introductions and qualification activities.
• Analyze AOI data to identify yields, trends, and process improvements.
• Coordinate AOI equipment upgrades, maintenance, and software updates.
• Ensure AOI processes comply with ISO/IATF quality standards and documentation.
• Train technicians on AOI operation, SOPs, and troubleshooting.

Skills

Die Attach Equipment

Process Improvement

Quality Assurance

Education

Degree in Electronics / Electrical / Chemical / Mechanical Engineering

Tools

SPC

FMEA

DOE

TPM

OCAP

JMP

RCA

Control Plan

Working Instruction

Predictive Maintenance

Job description

Responsible for developing, optimizing, and maintaining Automated Optical Inspection (AOI) systems used in PQFN semiconductor assembly processes. The role focuses on ensuring high inspection accuracy, minimizing false calls, improving defect detection capability, and supporting continuous yield and quality improvement. The engineer works closely with Process Engineering, Manufacturing, Equipment Engineering, and Quality teams to ensure AOI systems effectively monitor critical assembly processes while supporting production efficiency.

Key Responsibilities:

1. AOI Program Development & Optimization

• Develop, create, and optimize AOI inspection programs for PQFN assembly processes.
• Fine-tune inspection parameters to maximize defect detection while minimizing false rejects.
• Validate new AOI programs before production release.
• Continuously improve inspection algorithms based on process capability and defect trends.

2. New Product Introduction (NPI)

• Support AOI setup and qualification for new PQFN package introductions.
• Develop inspection recipes according to product specifications and customer requirements.
• Participate in process characterization and production qualification activities.
• Ensure AOI readiness before mass production.

3. Process & Yield Improvement

• Analyze AOI inspection data to identify process trends and yield loss.
• Work with Process Engineers to eliminate recurring assembly defects.
• Drive continuous improvement projects to improve inspection efficiency and first-pass yield.
• Support root cause analysis for quality excursions.
• Investigate AOI-detected defects and verify inspection accuracy.
• Maintain defect libraries and golden sample databases.
• Recommend corrective actions to reduce defect occurrence.

5. Equipment Support

• Support AOI machine setup, calibration, verification, and qualification.
• Work with Equipment Engineers on preventive maintenance and troubleshooting.
• Coordinate machine upgrades, software updates, and hardware improvements.
• Monitor AOI equipment performance and utilization.

6. Quality Assurance

• Ensure AOI inspection complies with internal quality standards and customer requirements.
• Support quality audits and customer visits related to AOI processes.
• Maintain inspection documentation, work instructions, and validation records.
• Ensure compliance with ISO, IATF 16949, and applicable manufacturing standards.

7. Data Analysis & Reporting

• Monitor AOI KPIs such as:
  • False Call Rate (FCR)
  • Yield
  • OEE
• Perform statistical analysis to identify process improvement opportunities.
• Prepare technical reports and present findings to cross-functional teams.
• Lead or participate in Lean, Six Sigma, Kaizen, and cost reduction projects.
• Improve AOI programming standards and inspection methodologies.
• Implement best practices to enhance productivity and inspection capability.
• Evaluate new AOI technologies for future manufacturing needs.

9. Training & Documentation

• Train technicians and operators on AOI operation and inspection criteria.
• Develop standard operating procedures (SOPs), work instructions, and troubleshooting guides.
• Maintain revision control of AOI programs and documentation.

Qualification & Experience:

Education Requirement:

Degree in Electronics / Electrical /Chemical/Mechanical Engineering

Additional Desirable Qualifications:

• Practical experiences with all the equipment’s in die attach process.
• Familiar with SPC, FMEA, DOE, TPM, OCAP, JMP, RCA, Control Plan, Working Instruction, Predictive Maintenance.