Senior Process Engineer PMO: Digitalization and Optimization

PT ESSA Industries Indonesia Tbk.; Bangsal; On-site; IDR 350,000,000 - 550,000,000; Full time

Job summary

PT ESSA Industries Indonesia Tbk. seeks a Senior Process Engineer to advance project engineering across phases, focusing on simulation, digitalization, optimization, and cross-functional collaboration for safe, reliable process unit design and operation.

You will work with licensors, EPCs, and internal teams to achieve technical excellence and support process safety and efficiency improvements at Jakarta Head Office and site plant.

Qualifications

• Bachelor’s degree in Chemical Engineering.
• Minimum 8 years of process engineering experience in oil & gas, petrochemical, or chemical industries.
• Proficiency in process simulation software such as Aspen HYSYS, ProII, or similar.
• Hands-on experience with PFDs, P&IDs, and process calculations.
• Familiarity with BED, material and energy balances, and equipment sizing.
• Experience supporting digital engineering initiatives (e.g., P&ID digitalization).
• Knowledge of health, safety, and environmental standards including SMK3 and ISO 14001.
• Strong communication, analytical thinking, and teamwork skills.

Responsibilities

• Develop and review steady-state and dynamic process simulation models for ISBL process units and OSBL offsites and utilities to support design validation, troubleshooting, and performance improvement.
• Prepare and review basic engineering deliverables, including process calculations, material and energy balances, PFDs, P&IDs, data sheets, and major equipment sizing.
• Coordinate with licensors and EPC contractors to validate the process design basis, key deliverables, equipment selection, material requirements, and operability.
• Analyze plant and simulation data to identify bottlenecks and opportunities to improve throughput, energy efficiency, reliability, and operating costs.
• Support the digitalization of P&IDs to improve data accuracy, accessibility, and collaboration across engineering disciplines.
• Collaborate with engineering, operations, construction, and HSE teams, including participation in technical reviews, HAZOP, SIL, and other process safety studies.
• Support pre-commissioning and commissioning activities for process units, offsites, and utility facilities.
• Ensure all engineering activities comply with process safety, occupational health, environmental, and regulatory requirements, and support corrective actions for identified non-conformances.
• Provide technical input for feasibility studies, project proposals, and potential business development opportunities.

Skills

Process engineering

Process simulation

Aspen HYSYS

ProII

PFDs & P&IDs

BED design

Material & energy balances

Equipment sizing

Digital engineering

HSE standards

SMK3

ISO 14001

Communication

Analytical thinking

Teamwork

Education

Bachelor’s degree in Chemical Engineering

Tools

Aspen HYSYS

ProII

Job description

PT ESSA Industries Indonesia Tbk. seeks a Senior Process Engineer to advance project engineering across phases, focusing on simulation, digitalization, optimization, and cross-functional collaboration for safe, reliable process unit design and operation.

You will work with licensors, EPCs, and internal teams to achieve technical excellence and support process safety and efficiency improvements at Jakarta Head Office and site plant.