Junior Mechanical Engineer

Jawa Satu Power, PT; Jawa Barat; On-site; IDR 60,000,000 - 90,000,000; Full time

Job summary

PT Jawa Satu Power is seeking a Junior Mechanical Engineer to support equipment performance and reliability across the power block, Balance of Plant, and fuel gas systems. The role targets early‑career engineers eager to gain hands‑on experience with rotating and static equipment and calculations.

You will work under Senior Engineers to monitor performance, perform basic analyses, and help prepare technical documentation.

Qualifications

• Bachelor’s Degree in Mechanical Engineering or a related field.
• Fresh graduate or up to 2 years of relevant experience in mechanical engineering within a power plant, oil & gas, EPC, or heavy industry environment.
• Basic understanding of power plant mechanical systems, including rotating and static equipment.
• Familiarity with gas turbines, steam turbines, HRSG, generators, etc. is preferred.
• Proficiency in reading mechanical drawings, P&IDs, and technical specifications.
• Good command of English and Bahasa Indonesia.

Responsibilities

• Support mechanical engineering activities for static and rotating equipment through data collection, basic calculations, and evaluations.
• Assist in monitoring equipment performance parameters and trends to identify reliability issues.
• Support preliminary assessment and troubleshooting of mechanical issues observed in plant equipment.
• Participate in Root Cause Analysis (RCA) and reliability improvement initiatives under guidance.
• Support technical reviews related to gas turbines, steam turbines, HRSG, generators, and Balance of Plant.
• Prepare and maintain mechanical engineering documentation (drawings, P&IDs, specs, calculations).
• Support project activities, MoC, and vendor/contractor coordination.
• Witness testing or commissioning activities as assigned.

Skills

Mechanical engineering

Drawing interpretation

Microsoft Office

AutoCAD

CMMS

Analytical thinking

English & Bahasa Indonesia

Education

Bachelor’s degree in Mechanical Engineering

Tools

AutoCAD

CMMS

Job description

What We Can Achieve Together

PT Jawa Satu Power is committed to operating one of Southeast Asia’s largest and most advanced CCGT power plants with excellence, reliability, and world-class standards. To strengthen our Mechanical Engineering capability, we are seeking a motivated Junior Mechanical Engineer who will play a key role in supporting equipment performance, mechanical system reliability, and continuous improvement initiatives across the power block, Balance of Plant, and fuel gas systems.

This position is ideal for early-career engineers who are eager to develop hands‑on engineering experience in rotating and static equipment, mechanical system analysis, reliability improvement, and technical problem‑solving within a large-scale power generation facility.

We’re Looking for You

As a Junior Mechanical Engineer, you will provide engineering support for plant mechanical systems under the guidance of Senior Engineers. You will contribute to equipment performance monitoring, technical evaluations, reliability analysis, engineering documentation, and improvement initiatives to ensure mechanical systems operate safely, efficiently, and reliably.

Your key responsibilities will include:

• Supporting mechanical engineering activities for static and rotating equipment through data collection, basic calculations, and technical evaluations.
• Assisting in monitoring equipment performance parameters and operational trends to identify potential reliability issues.
• Supporting the preliminary assessment and troubleshooting of mechanical issues observed in plant equipment and operations.
• Participating in Root Cause Analysis (RCA) and reliability improvement initiatives under the guidance of Senior Engineers.
• Supporting technical reviews related to gas turbines, steam turbines, HRSG, generators, pressure parts, Balance of Plant, and gas facilities.
• Preparing and maintaining mechanical engineering documentation, including drawings, P&IDs, technical specifications, calculations, and equipment records.
• Supporting mechanical engineering aspects of projects, modifications, and Management of Change (MoC) activities.
• Coordinating with Operations, Maintenance, vendors, contractors, and other engineering disciplines to support technical issue resolution and project execution.
• Supporting vendor and contractor activities, including work scope clarification, method statement review, and witnessing testing or commissioning activities as assigned.
• Supporting warranty‑related activities, Long‑Term Service Agreement (LTSA) monitoring, and preparation of technical reports.
• Ensuring all assigned engineering activities comply with HSE policies, quality standards, engineering codes, and applicable regulations.

What You’ll Bring

• Bachelor’s Degree (S1) in Mechanical Engineering or a related field.
• Fresh graduate or up to 2 years of relevant experience in mechanical engineering within a power plant, oil & gas, EPC, or heavy industry environment.
• Basic understanding of power plant mechanical systems, including rotating and static equipment.
• Familiarity with gas turbines, steam turbines, HRSG, generators, pressure parts, Balance of Plant, and gas facilities is preferred.
• Basic understanding of mechanical design principles, material selection, and engineering calculations.
• Ability to interpret mechanical drawings, P&IDs, and technical specifications.
• Basic understanding of thermodynamic principles and mechanical systems.
• Proficiency in Microsoft Office applications (Word, Excel, and PowerPoint).
• Familiarity with AutoCAD or CMMS systems is an advantage.
• Strong analytical and problem‑solving skills with attention to detail.
• Good communication skills in English and Bahasa Indonesia.
• Collaborative, adaptable, and eager to learn from experienced engineers.
• Self‑motivated, disciplined, and committed to safety, quality, and continuous improvement.

Who We Are

PT Jawa Satu Power (JSP) is a joint venture between Pertamina NRE, Marubeni, and Sojitz, established to develop and operate the Jawa-1 CCGT Power Plant—the largest gas‑fired combined cycle project in Southeast Asia.

Backed by a global network of partners from Japan, Korea, the U.S., Europe, and Indonesia, JSP combines innovation and collaboration to deliver reliable energy. We are committed to integrity, transparency, and creating long‑term value for all stakeholders