1. Job Information
• Job Title: Injection Molding Machine Operator & Production Supervisor
• Department: Production – Injection Molding
• Reports To: Production Manager / Factory Manager
• Work Location: Riyadh, Saudi Arabia
• Employment Type: Full-Time
2. Job Purpose
To operate and set up injection molding machines, adjust machine parameters, troubleshoot process-related issues, and supervise daily production activities. The role is responsible for ensuring production targets, product quality, machine efficiency, and workplace safety are consistently achieved.
3. Key Responsibilities
A. Machine Operation and Setting
• Operate injection molding machines and associated auxiliary equipment.
• Set and adjust machine parameters, including injection pressure, injection speed, holding pressure, cooling time, barrel temperature, screw speed, and clamping force.
• Perform machine setup, mold changeovers, and startup procedures.
• Optimize molding parameters to achieve stable production cycles and minimize material waste.
• Identify and troubleshoot common molding defects, such as flash, short shots, sink marks, warpage, and burning.
• Monitor machine performance and coordinate with the maintenance team when technical issues arise.
B. Production Supervision
• Supervise operators and helpers working in the injection molding production area.
• Allocate manpower and ensure operators follow approved production plans.
• Monitor production output, cycle times, downtime, and scrap rates.
• Ensure production targets are achieved according to the daily schedule.
• Train operators on machine operation, proper settings, and standard operating procedures.
• Maintain discipline, productivity, and effective communication among production personnel.
C. Quality Control
• Ensure products meet approved specifications and quality standards.
• Perform first-piece inspections after machine setup and parameter changes.
• Monitor product dimensions, weight, appearance, and other specified quality requirements.
• Identify nonconforming products and take immediate corrective action within the scope of the role.
• Coordinate with the Quality Control department regarding product defects and corrective actions.
• Maintain production and quality inspection records.
D. Safety and Housekeeping
• Ensure compliance with factory safety procedures and machine operating instructions.
• Verify that machine guards and safety devices are functioning correctly.
• Ensure proper handling of raw materials, colorants, and recycled materials.
• Maintain cleanliness and organization in the production area.
• Report unsafe conditions, equipment abnormalities, and workplace incidents immediately.
E. Reporting and Coordination
• Prepare daily production reports, including output, downtime, scrap, and machine performance.
• Coordinate with maintenance regarding machine breakdowns and preventive maintenance.
• Coordinate with the warehouse and production planning teams regarding material availability and production requirements.
• Report production problems, quality issues, and improvement opportunities to management.
4. Educational Qualifications
• Diploma or Bachelor's degree in Mechanical Engineering, Industrial Engineering, Plastics Engineering, Polymer Technology, or a related technical field.
• A technical diploma in plastics processing or injection molding is preferred.
• Candidates with strong practical experience and relevant technical training may be considered in place of a higher academic qualification.
5. Total Work Experience
• Minimum 5–7 years of experience in plastic injection molding operations.
• At least 2–3 years of hands-on experience in machine parameter setting, process optimization, mold changeovers, and troubleshooting.
• At least 1–2 years of experience supervising production operators or leading a production team.
• Experience with hydraulic and/or all-electric injection molding machines is preferred.
• Experience with different machine capacities and plastic materials such as PP, HDPE, LDPE, ABS, and other engineering or commodity plastics is an advantage.
6. Technical Skills and Competencies
• Strong knowledge of injection molding processes and machine operation.
• Ability to independently set up machines and establish appropriate molding parameters.
• Good understanding of mold construction, cooling systems, hot runners, and clamping mechanisms.
• Ability to identify molding defects and determine their root causes.
• Knowledge of cycle-time optimization, material consumption, and scrap reduction.
• Ability to read technical drawings and understand product specifications.
• Basic knowledge of preventive maintenance and machine troubleshooting.
• Proficiency in production reporting and Microsoft Excel.
• Knowledge of quality management systems and workplace safety requirements.
7. Personal Competencies
• Strong leadership and team supervision skills.
• Good problem-solving and decision-making abilities.
• Ability to work under production pressure and meet deadlines.
• Strong communication and coordination skills.
• High attention to detail and commitment to product quality.
• Ability to train and develop machine operators.
• Willingness to work shifts when required.
8. Key Performance Indicators (KPIs)
Performance will be evaluated based on the following:
1. Achievement of daily and monthly production targets.
2. Reduction in product rejection and material scrap rates.
3. Machine uptime and reduction in production downtime.
4. Optimization of cycle time and production efficiency.
5. Compliance with product quality requirements.
6. Compliance with safety procedures and housekeeping standards.
7. Accuracy and completion of production reports.
8. Effective supervision, attendance, and productivity of production personnel.
9. Required Candidate Profile
The ideal candidate must be a technically competent injection molding professional who can independently operate machines, establish and optimize process parameters, troubleshoot molding problems, and supervise production operators.
The candidate must demonstrate practical knowledge of the injection molding process and the leadership ability to manage daily production activities while maintaining product quality, machine efficiency, and workplace safety.
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