Assistant Instrument Maintenance Engineer jobs in Aster Chemicals and Energy (Aster)
Job Title: Assistant Instrument Maintenance Engineer
Company: Aster Chemicals and Energy (Aster)
Location: Bukom, Singapore (903808)
Job Category: Manufacturing
Job Number: 757
About Aster
Aster Chemicals and Energy (Aster) is a leading provider of chemical and energy solutions in
Singapore and Southeast Asia. Aster is a joint venture led by Chandra Asri in partnership with Glencore Group. Building on the foundations of Singapore’s first oil refinery, our facilities on Pulau Bukom and Jurong Island serve as the nation’s hub for integrated refining and petrochemical production.
Aster Bukom operates a 237,000 barrels per day refinery and a 1.1 million tonne per year ethylene cracker, while Aster Jurong Island produces essential petrochemicals that support industries across the region.
With over 60 years of heritage, Aster is shaping the future by driving progress and creating new opportunities for our people. From advancing energy solutions to driving petrochemical innovation, we welcome you to join us in our journey that reflects our commitment to sustainability and operational excellence.
About the Role
The Assistant Instrument Maintenance Engineer provides hands-on technical support and assists in maintenance activities related to instrumentation in the Production Unit. The role supports scheduled, emergency, and non-routine maintenance work while ensuring tasks are carried out safely, efficiently, and in compliance with site HSSE requirements.
Key Responsibilities
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Provide day-to-day hands-on maintenance and troubleshooting support for instrument-related matters in Production Unit.
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Ensure work complies with statutory obligations, Engineering Codes of Practice, and site standards.
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Support execution of daily and weekly maintenance schedules by preparing materials, tools, and resources for assigned jobs.
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Assist planning and execution of Emergency & Schedule Breaker priority work repairs.
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Comply with all HSSE standards and requirements during maintenance activities.
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Perform SAP administration tasks such as updating time sheets, service entries, purchase and material orders.
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Provide updates on daily maintenance progress and support work order closure (MCMP, TECO, actual hours).
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Coordinate with Operations, Technology, and Procurement teams as required.
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Supervise contractors to ensure safe execution, productivity, and quality of work.
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Identify recurring instrumentation issues and recommend reliability improvements.
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Assist in updating and maintaining spare parts inventory for instrumentation.
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Seek opportunities to improve work methods, procedures, and tools to deliver maintenance efficiently and within budget.
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Participate in scheduled safety walkabouts and contribute to Job Hazard Analysis for medium/high risk jobs.
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Ensure full compliance with Life Saving Rules and site safety requirements at all times.
Job Requirements
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Minimum NITEC Level 2 certification in Instrumentation, Electronics, or Electrical, or a Diploma/Degree in the same fields.
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3–5 years of relevant experience in instrumentation construction or maintenance in oil & gas, chemical, petrochemical, or related industries.
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Willing to perform standby duty at Bukom site as per revised schedule.
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Knowledge of instrumentation and control systems, including PLC, DCS, OPC, Fieldbus, Modbus, HART, Vnet, functional logic, and PID interpretation.
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Strong troubleshooting and analytical skills for instrumentation and control systems.
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Experience with calibration of industrial instrumentation.
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Basic understanding of server system administration for troubleshooting and maintenance.
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SAP (GSAP) Maintenance Module knowledge is a plus.
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Strong team player with field work, stakeholder engagement, and contractor/vendor management experience; able to work independently when required.
Work Location
Bukom, Singapore
How to Apply
Applications must be submitted through the official careers portal:
Apply for Assistant Instrument Maintenance Engineer at Aster
We thank you for your interest. Kindly note that only shortlisted candidates will be contacted for a discussion.
At Aster, we believe people are at the heart of progress. As an Assistant Instrument Maintenance Engineer, you will be part of a dynamic team responsible for keeping critical refining and petrochemical operations running smoothly. This role offers not only technical challenges but also opportunities to grow your expertise in one of the most advanced facilities in Singapore’s energy sector.
You will gain hands-on experience with complex control systems, instrumentation technologies, and reliability improvement projects. Working closely with senior engineers and cross-functional teams, you will develop problem-solving skills that are highly valued in the oil & gas and chemical industries.
We encourage continuous learning, and you will be supported with training, mentoring, and exposure to cutting-edge solutions in automation and instrumentation. Aster’s commitment to sustainability and operational excellence means you will also contribute to projects that enhance energy efficiency, safety, and long-term reliability.
Joining Aster means joining a company with over six decades of heritage, backed by global leaders Chandra Asri and Glencore. If you are passionate about engineering and want to build a career that makes an impact, Aster is the right place for you.