Assistant Maintenance Supervisor - Injection Molding

Job Juncture; Chicago (IL); On-site; USD 41,000 - 48,000; Full time

Job summary

Job Juncture in the Chicago area is seeking an Assistant Maintenance Supervisor to back up the Maintenance Supervisor and keep injection molding equipment running smoothly.

You will troubleshoot mechanical, electrical, hydraulic, and pneumatic systems, lead a maintenance team, and grow into formal leadership while staying hands-on.

Qualifications

• Extensive experience repairing injection molding machines and related equipment.
• Strong knowledge of mechanical, electrical, hydraulic and pneumatic systems.
• Proven troubleshooting skills and ability to perform root cause analysis.
• Ability to read prints, diagrams, and technical documentation.
• Welding skills required; machining skills a plus.
• Prior lead, senior technician, or informal leadership experience preferred.
• Strong interest in advancing into a formal leadership role while remaining hands-on.

Responsibilities

• Act as backup to the Maintenance Supervisor during absences and assist with day-to-day leadership of the maintenance team.
• Support and help coordinate daily maintenance activities to minimize downtime and support production.
• Troubleshoot and diagnose mechanical, electrical, hydraulic, and pneumatic issues on injection molding machines and auxiliary equipment.
• Lead and support root cause analysis efforts to prevent repeat failures.
• Assist with preventive maintenance programs to improve equipment reliability and uptime.
• Provide hands-on maintenance support as needed, including machine and auxiliary equipment repairs.
• Support training, development, and mentoring of maintenance technicians.
• Help reinforce accountability, work standards, and a problem-solving mindset within the maintenance team.
• Assist with reviewing time sheets, work orders, and maintenance priorities.
• Work with tool crib personnel to maintain appropriate inventory of parts, tools, and supplies.
• Communicate effectively with production, tooling, and management to support plant priorities.
• Promote and enforce safe work practices and maintain a clean, organized maintenance environment.
• Perform additional related duties as assigned.

Skills

Leadership experience

Troubleshooting

Read drawings/diagrams

Mechanical knowledge

Electrical knowledge

Hydraulic knowledge

Pneumatic knowledge

Tools

Injection molding machines

Hydraulic systems

Pneumatic systems

Welding

Job description

Salary: $30 - $35 per hour

Location: Chicago, IL

Posted: September 03 2026

Relocation Assistance: Not Available

ASSISTANT MAINTENANCE SUPERVISOR

Location: Just outside of Chicago, IL

TITLE: Assistant Maintenance Supervisor
DEPARTMENT: Maintenance
REPORTS TO: Maintenance Supervisor

OVERALL ROLE

Serves as the primary backup to the Maintenance Supervisor and supports the reliable operation of injection molding machines and auxiliary equipment through hands‑on troubleshooting, preventive maintenance, and leadership support. This role is intended for a maintenance professional seeking growth into leadership while remaining technically hands‑on.

ESSENTIAL RESPONSIBILITIES

Act as backup to the Maintenance Supervisor during absences and assist with day‑to‑day leadership of the maintenance team

Support and help coordinate daily maintenance activities to minimize downtime and support production

Troubleshoot and diagnose mechanical, electrical, hydraulic, and pneumatic issues on injection molding machines and auxiliary equipment

Lead and support root cause analysis efforts to prevent repeat failures

Assist with preventive maintenance programs to improve equipment reliability and uptime

Provide hands‑on maintenance support as needed, including machine and auxiliary equipment repairs

Support training, development, and mentoring of maintenance technicians

Help reinforce accountability, work standards, and a problem‑solving mindset within the maintenance team

Assist with reviewing time sheets, work orders, and maintenance priorities

Work with tool crib personnel to maintain appropriate inventory of parts, tools, and supplies

Communicate effectively with production, tooling, and management to support plant priorities

Promote and enforce safe work practices and maintain a clean, organized maintenance environment

Perform additional related duties as assigned

EQUIPMENT & SYSTEMS SUPPORTED

Chillers, thermolators, resin dryers, material handling and loader systems

Grinders, tower fans, and related auxiliary equipment

PHYSICAL REQUIREMENTS

Manufacturing environment with moderate noise and frequent movement on the production floor

Ability to stand and/or walk for the duration of the shift

Ability to lift up to 55 lbs

Ability to bend, stoop, twist, kneel, crouch, push, and pull as required

Ability to climb, work atop molding machines, ladders, and aerial lift equipment

Ability to work occasionally in confined or tight spaces

Must wear required PPE, including fire‑retardant apparel

QUALIFICATIONS

Extensive experience repairing injection molding machines and auxiliary equipment

Strong working knowledge of mechanical, electrical, hydraulic, and pneumatic systems

Proven troubleshooting skills and ability to perform root cause analysis

Ability to read and interpret prints, diagrams, and technical documentation

Welding skills required; machining skills a plus

Prior lead, senior technician, or informal leadership experience preferred

Strong interest in advancing into a formal leadership role

Ability to balance hands‑on technical work with leadership and administrative responsibilities