Wet Etching Process Engineer (Bumping)

Kosmic Technologies; Região Norte; On-site; BRL 89,000 - 156,000; Full time

Job summary

Kosmic Technologies in the Brazil North region is hiring a Process Engineer to develop, qualify, and maintain wet etch, clean, and stripping processes for wafer fabrication and advanced packaging.

You will optimize process parameters to achieve target dimensions and surface cleanliness, monitor process health through SPC, and investigate yield excursions using root cause analysis. You will collaborate with multiple teams to support NPI and ensure compliance with EHS and documentation standards.

Qualifications

• Experience in controlling chemical/process parameters to meet specifications
• Familiarity with DOE, SPC, FMEA is a plus
• Ability to document procedures, work instructions and control plans

Responsibilities

• Develop, qualify, and maintain wet etch, clean, and stripping processes for wafer fabrication and advanced packaging.
• Optimize process parameters to meet critical dimensions and surface cleanliness.
• Monitor process health via SPC and implement corrective actions when deviations occur.
• Investigate yield excursions, defects, and process abnormalities using root cause analysis.
• Design and execute DOE experiments to improve yield and reduce costs.
• Collaborate with Equipment, Production, Quality, Product Engineering, and R&D teams to resolve issues.

Skills

Wet etch

Process optimization

DOE

SPC

Root cause analysis

Cross-functional collaboration

Documentation

Job description

Develop, qualify, and maintain wet etch, clean, and stripping processes for semiconductor wafer fabrication and advanced packaging applications.

Optimize process parameters to achieve target specifications for critical dimensions, surface cleanliness, and defect performance.

Monitor process health through Statistical Process Control (SPC) and implement corrective actions when deviations occur.

Investigate yield excursions, defects, and process abnormalities using root cause analysis methodologies.

Design and execute experiments (DOE) to improve process performance, increase yield, and reduce manufacturing costs.

Collaborate with Equipment, Production, Quality, Product Engineering, and R&D teams to resolve technical issues and support production goals.

Support new product introductions (NPI), process transfers, and technology development activities.

Evaluate and qualify new chemicals, materials, and process technologies.

Prepare and maintain process documentation, including specifications, work instructions, FMEA, control plans, and qualification reports.

Ensure compliance with Environmental, Health, and Safety (EHS) standards, chemical management procedures, and waste disposal regulations.

Drive continuous improvement initiatives focused on yield enhancement, defect reduction, cycle-time improvement, and cost savings.