Plastic Injection Machine Engineer / Technician

Pengiklan Anonim; Ciseeng; On-site; IDR 180,000,000 - 300,000,000; Full time

Job summary

Pengiklan Anonim seeks a Plastic Injection Machine Engineer/Technician to ensure stable, efficient production through proper machine setup, parameter optimization, and systematic troubleshooting. You will collaborate with Production, QA, Maintenance, and Tooling to maximize output while reducing defects and costs.

The role demands hands-on experience with molding processes, mold/tooling coordination, and strong documentation.

Qualifications

• Diploma or Bachelor’s degree in Mechanical/Industrial Engineering or related field.
• 2+ years as a Technician; 3–5+ years as Engineer; 5+ years in injection molding for Lead/Supervisor track.

Responsibilities

• Set up mold installation/removal and optimize injection parameters.
• Monitor cycle time, machine efficiency, and output to ensure stability.
• Troubleshoot defects (short shots, flash, sink marks, warpage, etc.).
• Coordinate mold maintenance and tooling improvements.
• Support QA with first-piece approval and SPC data where applicable.
• Assist maintenance with preventive actions and repairs coordination.
• Support production planning and monitor KPIs (OEE, downtime, scrap).
• Maintain records of parameters, changes, downtime, and improvements.
• Follow safety procedures, 5S and ISO quality requirements.
• Engineer/Lead duties: develop processes, perform DOE, lead cost reductions, train staff.

Skills

Troubleshooting

Process optimization

OEE improvement

Quality control

Team collaboration

Education

Bachelor's/Diploma in Mechanical/Industrial Engineering

Tools

Haitian/JSW/Engel machines

Job description

Plastic Injection Machine Engineer / Technician

We are seeking a skilled Plastic Injection Molding professional responsible for ensuring stable, efficient, and high-quality production through proper machine setup, process optimization, troubleshooting, preventive maintenance, and continuous improvement. The successful candidate will work closely with Production, Quality Assurance, Maintenance, and Tooling departments to maximize productivity while minimizing defects, downtime, and production costs.

Key Responsibilities

Machine Setup & Process Control

• Perform mold installation and removal.
• Set and optimize injection molding parameters.
• Conduct machine startup and first-article approval.
• Monitor cycle time, machine efficiency, and production output.
• Ensure process stability throughout production.
• Perform machine changeovers within target setup time.
• Optimize cooling, clamping, and injection processes.

Process Optimization

• Improve Overall Equipment Effectiveness (OEE).
• Reduce cycle time while maintaining product quality.
• Minimize material consumption and scrap.
• Optimize:
  • Holding pressure
  • Holding time
  • Screw recovery
  • Back pressure
  • Mold temperature
  • Cooling time
  • Clamp force
• Validate and document optimized process parameters.

Troubleshooting

• Diagnose and resolve molding defects including:
• Short Shot
• Flash
• Sink Marks
• Warpage
• Burn Marks
• Silver Streak
• Flow Marks
• Weld Lines
• Air Traps
• Jetting
• Voids
• Black Specks
• Brittleness
• Dimensional instability
• Identify root causes using systematic problem-solving methods such as:
• 5 Why Analysis
• Fishbone Diagram
• PDCA
• CAPA

Mold & Tooling

• Coordinate mold maintenance.
• Report mold wear or damage.
• Recommend tooling improvements.

Quality Assurance

• Ensure products meet customer specifications.
• Conduct first-piece approval.
• Monitor SPC data where applicable.
• Support PPAP, FAI, and validation activities.
• Maintain process consistency.
• Reduce customer complaints through process control.

Maintenance Support

• Perform basic preventive maintenance.
• Coordinate machine repairs with Maintenance.
• Identify abnormal machine conditions.
• Ensure machines are operating safely.

Production Support

• Support production planning.
• Monitor productivity targets.

Documentation

• Maintain accurate records of:
• Machine parameters
• Setup sheets
• Process changes
• Troubleshooting reports
• Downtime reports
• Improvement activities
• Maintenance requests

Safety & Compliance

• Follow company safety procedures.
• Maintain clean work areas using 5S.
• Comply with ISO quality requirements.
• Follow environmental and waste handling procedures.

Additional Responsibilities for Engineer

• Develop standard molding processes.
• Lead process validation.
• Design experiments (DOE).
• Conduct capability studies (Cp/Cpk).
• Lead cost reduction initiatives.
• Introduce new molding technologies.
• Support new product introduction (NPI).
• Assist in mold design reviews.
• Train technicians and operators.

Additional Responsibilities for Lead / Supervisor

• Supervise technicians and setup personnel.
• Assign daily work priorities.
• Verify production readiness.
• Coach and mentor team members.
• Approve machine setup.
• Coordinate with Production, QA, Maintenance, and Tooling.
• Monitor KPIs including:
• OEE
• Scrap rate
• Downtime
• Cycle time
• Setup time
• Lead shift handovers.
• Investigate major production issues.
• Ensure SOP compliance.

Qualifications

• Diploma or Bachelor's Degree in Mechanical Engineering, Industrial Engineering, Polymer Engineering, Manufacturing Engineering, or a related field.
• Technician: 2+ years
• Engineer: 3-5+ years
• Lead: 5+ years in injection molding with leadership experience

Technical Skills

Knowledge of:

• Hydraulic and servo-hydraulic machines
• Mold cooling systems
• Material drying systems
• Auxiliary equipment
• Mold temperature controllers
• Resin conveying systems
• Scientific molding principles
• Process validation
• Statistical Process Control (SPC)

Experience with engineering plastics such as:

• PP
• PE
• ABS
• PC
• PA
• POM
• PET
• TPE/TPR
• Nylon
• Glass-filled materials

• Experience with machine brands such as Haitian, JSW, Engel, Sumitomo, Toshiba, Fanuc, Arburg, or similar is an advantage.

Core Competencies

• Strong analytical and troubleshooting skills
• Problem-solving mindset
• Leadership and coaching ability
• Effective communication
• Team collaboration
• Time management
• Ability to work under production pressure
• High commitment to safety and quality

Key Performance Indicators (KPIs)

• OEE improvement
• Machine uptime
• Scrap reduction
• Cycle time achievement
• Setup time reduction
• Downtime reduction
• Customer complaint reduction
• On-time production achievement
• Process capability (Cp/Cpk)
• Preventive maintenance compliance
• 5S and safety compliance

Reporting Line

• Reports to:
• Production Manager
• Manufacturing Manager
• Technical Manager (depending on company structure)
• Works closely with:
• Production
• Quality Assurance
• Maintenance
• Tool Room
• Warehouse
• Planning (PPC)