Process Engineer, WETS

STMicro; Singapore; On-site; SGD 68,000 - 90,000; Full time

Job summary

STMicroelectronics is seeking a detail-oriented Buffered Oxide Etch Wafer Process Owner to lead and optimize the BOE wet etch step for wafer patterning and oxide opening. You will partner with lithography, etch, integration, metrology, yield, and manufacturing teams to maintain process stability and drive improvements.

The role requires a solid background in chemical engineering and at least 2 years in semiconductor wet processing, with a focus on BOE chemistry, wet etch behavior, and process

Qualifications

• Experience in semiconductor wet processing, oxide etch, or pattern transfer applications.
• Strong understanding of BOE chemistry, wet etch behavior, and process control.
• Experience with root cause analysis, SPC, and DOE methodologies.

Responsibilities

• Support process characterization, qualification, and continuous improvement activities.
• Collaborate with lithography, etch, integration, yield, and quality teams to resolve issues.
• Conduct root cause analysis for excursions, yield loss, and defectivity concerns.

Skills

Semiconductor wet processing

Root cause analysis

DOE methodologies

Process control

Cross-functional teamwork

Education

Chemical engineering degree

Job description

OUR STORY

At STMicroelectronics, we believe in the power of technology to drive innovation and make a positive impact on people, businesses, and society. As a global semiconductor company, our advanced technologies and chips form the hidden foundation of the world we live in today.

When you join ST, you will be part of a global business with more than 122 nationalities, present in 40 countries, and comprising over 49,000 diverse and dedicated creators and makers of technology around the world.

Developing technologies takes more than talent: it takes amazing people who understand collaboration and respect. People with passion and the desire to disrupt the status quo, drive innovation, and unlock their own potential.

Embark on a journey with us, where you can innovate for a future that we want to make smarter and greener, in a responsible and sustainable way. Our technology starts with you.

YOUR ROLE

We are seeking a motivated and detail-oriented Buffered Oxide Etch Wafer Process Owner to own and optimize the BOE wet etch process used in wafer patterning and oxide opening applications. This role is responsible for ensuring precise, uniform, and repeatable oxide removal that supports accurate pattern transfer, high device quality, and strong manufacturing yield.

The successful candidate will work closely with lithography, etch, integration, metrology, yield, and manufacturing teams to maintain process stability, troubleshoot excursions, and drive continuous improvement.

• Support process characterization, qualification, and continuous improvement activities.
• Collaborate with lithography, etch, integration, yield, and quality teams to resolve process issues.
• Conduct root cause analysis for excursions, yield loss, and defectivity concerns.
• Support SPC monitoring, process capability improvement, and change control activities.
• Qualify new chemistries, equipment changes, and recipe updates as needed.
• Support technology transfers and new product introductions.

YOUR SKILLS & EXPERIENCES

• Bachelor's or Master's degree in Chemical Engineering, Materials Science, Chemistry, Physics, or a related field.
• At least 2 years experience in semiconductor wet processing, oxide etch, or pattern transfer applications.
• Strong understanding of BOE chemistry, wet etch behavior, and process control.
• Experience with root cause analysis, SPC, and DOE methodologies.
• Ability to work effectively in a cross-functional manufacturing environment.
• Strong analytical, communication, and problem-solving skills..

ST is proud to be one of the 17 companies certified as a 2026 Global Top Employer and the first and only semiconductor company to achieve this distinction. ST was recognized in this ranking thanks to its continuous improvement approach and stands out particularly in the areas of ethics & integrity, purpose & values, organization & change, business strategy, and performance.

At ST, we endeavor to foster a diverse and inclusive workplace, and we do not tolerate discrimination. We aim to recruit and retain a diverse workforce that reflects the societies around us. We strive for equity in career development, career opportunities, and equal remuneration. We encourage candidates who may not meet every single requirement to apply, as we appreciate diverse perspectives and provide opportunities for growth and learning. Diversity, equity, and inclusion (DEI) is woven into our company culture.

To discover more, visit st.com/careers.