Molding Maintenance - Supervisor; Day Shift

Molding Maintenance Supervisor

Location :
Lee’s Summit, MO
Department :
Molding Maintenance
Shift : 7 am to 4 pm (Mon to Fri)

At Polytainers, we create packaging that helps protect the food products people enjoy every day. As a leading North American manufacturer of rigid plastic packaging, we combine innovation, operational excellence and strong customer partnerships to deliver quality products and contribute to a more sustainable future.

Our people are at the heart of everything we do. Across our teams and facilities, we work together with purpose, put our customers first and continuously look for better ways to work. We create an environment where people are encouraged to share their ideas, empowered to take action and are supported in their growth.

When you join Polytainers, you become part of a team that values accountability, collaboration and respect. Whatever your role—making our products, supporting our customers or improving how we work—your contribution matters. Together, we partner for success, win through teamwork and create packaging solutions for today and tomorrow.

Reporting to the Technical Manager, the Maintenance Supervisor provides leadership and direction to a team of 8-10 Maintenance Technicians, including overhaul mechanics, supporting a high-volume plastics manufacturing operation. This role is responsible for ensuring the reliability, performance, and continuous improvement of injection molding, thermoforming, and thermoforming case-packing equipment across the facility.

The Maintenance Supervisor oversees daily maintenance operations, including troubleshooting, repairs, preventive maintenance, workforce planning, and scheduling activities. The position ensures optimal equipment uptime, supports production objectives, and drives operational excellence through effective resource management and continuous improvement initiatives.

In partnership with the Technical Manager, the Maintenance Supervisor leads employee development, performance management, inventory control, safety compliance, and maintenance improvement projects while fostering a culture of accountability, teamwork, and continuous learning.

This is a day-shift leadership position with responsibility for maintaining equipment reliability, maximizing operational efficiency, and supporting the facility's long-term growth and strategic objectives.

This position is in the Molding Maintenance department which has 24/7 operations across four 12-hour shifts (7p-7a or 7a-7p)..

• Ensures all team members are trained and performing in a safe and efficient manner.
• Ensure accident/incident investigations are carried out and documented to determine root causes, corrective actions and following-up to ensure completion.
• Promote proactive identification and elimination of hazards.
• Correct unsafe acts or conditions, ensuring health & safety policies are followed.
• Regularly audit the Shop Floor to ensure compliance with policies and procedures and ensure that inspections are appropriately documented.

• Assign Maintenance to machines and assignments throughout the department, working with the molding shift supervisor to ensure that there is appropriate floor coverage.
• Troubleshoot production & equipment issues, escalating and documenting issues that they are unable to resolve to the Technical Manager.
• Understand shift maintenance and performance targets and how they contribute enabling to Molding and Toronto Operations objectives to be met.
• Monitor machine performance and make adjustments as needed.

• Onboard new Maintenance Technicians and ensure they have appropriate resources for strong performance.
• Develop training plan and assign trainers, as appropriate.
• Consistently monitor progress and performance of new hires and offer resources, guidance, coaching, and feedback as needed.
• Report new team member progress to Manager.

• Ensure that all team members are treated in an equal and fair manner, abiding by the company Standards of Conduct.
• Be responsible for the supervision of direct reporting Team Members.
• Set daily shift objectives and assist maintenance team members in fulfilling the outlined goals and objectives.
• Execute and implement personal development and training plans.
• Manage vacation schedules and ensure…