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 operational excellence in an evolving industry landscape.

Together, we can achieve more — come be a part of it.

About the Job

We are seeking a Mechanical Maintenance Engineer to plan and execute critical static mechanical maintenance activities, including PCRs, PIT/PIMS, catalyst changes, and RIK. This role provides frontline engineering support to ensure safe, reliable, and efficient plant operations, while assisting the Maintenance Team Lead to maximize plant availability and resource utilization.

Key Responsibilities

• Plan and deliver assigned maintenance activities in a cost-effective, safe, and efficient manner through contractors.
• Lead contractors in field activities, ensuring compliance with company, industrial, and authority HSSE standards.
• Organize Job Hazard Analysis (JHA) meetings to identify and mitigate risks for assigned activities.
• Collaborate with stakeholders on reviews, schedule optimization, resource leveling, and timely work plan updates.
• Identify opportunities for waste elimination and maintenance optimization; work with stakeholders to close gaps.
• Interface with Pipeline Integrity and other multi-discipline teams for end-to-end maintenance execution.
• Develop rectification solutions to maintain piping integrity and ensure timely execution.
• Manage contractors, monitor productivity, ensure competency, and uphold QA/QC standards.
• Coordinate with vendors, specialist contractors, and third parties as required.
• Prepare weekly work and field progress reports; provide recovery plans where needed.
• Perform standby engineer duties and act as Authorized Applicant/Engineer under PTW requirements.
• Support mechanical completion reviews for handover to Projects.
• Carry out other related duties as assigned.

Job Requirements

• Degree or Diploma in Mechanical Engineering (or equivalent).
• Minimum 5 years’ relevant experience in mechanical/piping construction within the oil & gas, chemical, or petrochemical industry.
• Knowledge of painting, insulation, scaffolding, and brownfield maintenance/construction.
• Experience in plant turnaround planning, preparation, and execution.
• Skilled in HSSE management, mechanical piping design, and field execution methods.
• Preferred Certifications:
  - WSQ Supervise Safe Lifting Operations (SSLO) or equivalent lifting supervisor certification
  - WSQ Perform Work in Confined Space Operation (PWCSO) or WSQ Supervise Work in Confined Space Operation (SWCSO)
  - Prior experience as lifting supervisor under regulated operations

Additional Information

• Work location: Jurong Island
• Candidates must be comfortable with on-site work, including turnaround and shutdown periods.
• We thank all applicants for their interest. Only shortlisted candidates will be contacted.