Assistant Maintenance Engineer-(AMHS) (Rotating Shift)

STMicro; Singapore; On-site; SGD 90,000 - 120,000; Full time

Job summary

STMicroelectronics is seeking a hands-on AMHS Engineer to own uptime, reliability and continuous improvement of the Automated Material Handling System in a 24/7 semiconductor fab.

You will monitor system performance, perform RCA using 8D/5 whys, coordinate with OHT, AMR, stockers and EFEM suppliers, ensure SEMI SECS/GEM compliance, and drive corrective actions to minimize downtime while collaborating with fab operations and suppliers.

Qualifications

• Experience deploying AMHS in semiconductor fabs.
• Ability to monitor OHT traffic and stocker utilization.
• Knowledge of SEMI standards and safety protocols.

Responsibilities

• Own AMHS uptime post-installation and target >99.9% reliability.
• Monitor process metrics and perform RCA for wafer delays or contamination.
• Coordinate with OHT, AMR, stockers, and EFEM suppliers for seamless integration.
• Provide training on AMHS recovery procedures and best practices.

Skills

AMHS deployment coordination

Root cause analysis

Troubleshooting

Cross-functional collaboration

Tools

SEMI standards (SEMI E84)

SECS/GEM experience

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 115 nationalities, present in 40 countries, and comprising over 50,000 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.

The AMHS AME is responsible for uptime, reliability and sustainability of AMHS (Automated Material Handling System) in a semiconductor manufacturing environment. The role demands strict adherence to tight timelines, rapid response to dynamic changes, and compliance with semiconductor industry standards (e.g., SEMI, E84). AME will assist engineer’s ownership of AMHS equipment, focusing on performance optimization, root cause analysis (RCA), and implementing corrective actions to minimize downtime in a 24/7 high-volume production environment. Close collaboration with suppliers, fab operations, and cross-functional teams is essential.

Project Management & Execution

• \- Follow engineer’s lead and coordinate AMHS deployment in semiconductor fabs, ensuring compatibility with cleanroom requirements, wafer handling protocols, and fab layout constraints.
• \- Assist engineer and coordinate with OHT (Overhead Hoist Transport), AMR, stockers, and EFEM suppliers to ensure seamless integration with modules (e.g., lithography, etch, implant).
• \- Ensure compliance with SEMI standards (e.g., SEMI E84 for AMHS, SECS/GEM communication) and fab safety protocols (working at height, chemical handling, fire suppression).

System Performance & Equipment Ownership (Fab Operations Support)

• \- Own AMHS performance post-installation, ensuring high uptime (>99.9%) to prevent wafer movement bottlenecks in production.
• \- Monitor OHT traffic, tower stocker utilization, and load port availability to optimize wafer delivery efficiency.
• \- Perform RCA on AMHS‑related wafer delays, misprocessing, or contamination events using 8D, 5 Whys, or Fishbone methodologies.

Troubleshooting & Continuous Improvement

• \- Provide rapid troubleshooting for OHT jams, vehicle deadlocks, RFID misreads, or load port misalignments to minimize wafer stuck time.
• \- Drive automation enhancements using lean program to reduce manual interventions.
• \- Collaborate with equipment engineers to resolve wafer‑handling‑related defects (e.g., wafer breakage, misalignment).

Stakeholder & Supplier Management

• \- Assist engineer and participate in weekly AMHS supplier meeting to track defect rates, response times, and improvement actions.
• \- Work with fab operations, production planning, and process engineering to align AMHS performance.
• \- Provide training to technicians on AMHS recovery procedures and best practices.

ST is proud to be one of the 17 companies certified as a 2025 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.