Aster Chemicals and Energy is a leading provider of chemical and energy solutions. Building on the foundation of Singapore’s first oil refinery, the business plays a critical role in supporting supply, commercial performance, and operational capabilities for Singapore and Southeast Asia. Aster has a refinery with capacity of more than 300,000 barrels per day with ongoing asset rejuvenation, alongside a 1.1 million metric ton naphtha cracker on Pulau Bukom, and 2.5 million metric tons of downstream chemical assets on Jurong Island.

We are looking for an experienced Instrumentation Maintenance Specialist to support maintenance and reliability activities for analyzers and instrumentation systems within our production facilities on Pulau Bukom.

This role involves hands‑on troubleshooting, maintenance execution, and coordination of field instrumentation activities to ensure safe, reliable, and efficient plant operations. The succ...