Maintenance Planner at Semco Tank Holding – St. Louis, Missouri

Company Overview

Semco-Tank Holding Corporation has become the market leader and manufacturer of rotationally molded poly and welded steel bulk storage and material handling products in North America. Tank is growing rapidly and is always working to expand its capabilities and diversify product offerings consistent with the company values of growth and service to its customers.

Position Summary

We are looking for a Maintenance Planner to join our team at Semco Tank Holding. This role is responsible for planning, scheduling, and coordinating maintenance activities to ensure maximum equipment uptime and efficiency. This role also performs hands-on preventive and corrective maintenance on blow molding machines, injection molding machines, molds, auxiliary equipment, and facility systems.

The position supports production by minimizing downtime, improving reliability, and ensuring maintenance work is properly prioritized, planned, and executed.

Key Responsibilities

Maintenance Planning & Scheduling

• Plan and schedule preventive, predictive, and corrective maintenance activities.
• Coordinate maintenance schedules with production to minimize downtime.
• Create and manage work orders in the maintenance management system (CMMS) or maintenance logs.
• Ensure required parts, tools, and labor are available before scheduled work begins.
• Maintain preventive maintenance (PM) programs for all equipment.
• Track maintenance history, equipment performance, and downtime data.
• Identify recurring equipment problems and support root cause analysis.
• Follow all company safety procedures and OSHA requirements.

Hands-On Maintenance Duties

• Perform troubleshooting, repair, and maintenance of:
• Blow molding machines
• Injection molding machines
• Hydraulic systems
• Pneumatic systems
• Mold tooling
• Conveyors and automation equipment
• Resin dryers and material handling systems
• Cooling towers and chillers
• Air compressors
• Diagnose electrical, mechanical, hydraulic, and pneumatic issues.
• Replace or repair motors, pumps, valves, sensors, heaters, and controls.
• Assist with mold changes, machine setup, and equipment adjustments when required.
• Perform preventative maintenance inspections and lubrication tasks.
• Ensure machines operate safely and efficiently.

Spare Parts & Inventory Management

• Maintain critical spare parts inventory for molding machines and auxiliary equipment.
• Identify and order necessary replacement parts and maintenance supplies.
• Work with vendors and suppliers for parts procurement and service support.

Qualifications

• High school diploma or GED required.
• Technical training in industrial maintenance, mechanical systems, or electrical systems preferred.
• 3+ years of maintenance experience in manufacturing.
• Experience with plastics processing equipment (blow molding or injection molding) preferred.
• Strong troubleshooting skills in mechanical, electrical, hydraulic, and pneumatic systems.
• Ability to read technical manuals, schematics, and blueprints.

Physical Requirements

The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

• Occasional, represents 1 to 33% or 1-2 hours of an 8-hour workday.
• Frequently, represents 34 to 66% or 2 1/2 to 5 1/2 hours of an 8-hour workday.
• Regularly, represents 67 to 100% or 6 to 8 hours of an 8-hour workday.
• While performing the duties of this Job, the employee is regularly required to stand; walk; use hands to finger, handle, or feel; reach with hands and arms and talk or hear. The employee is regularly required to climb or balance and stoop, kneel, crouch, or crawl. The employee must regularly lift and /or move up to 50 pounds. The vision abilities required by this job include close vision, color vision and peripheral vision.
• Work Environment

The work environment characteristics described here are representative of those an employee encounters while performing the essential functions of this job. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

While performing the duties of this Job, the employee is occasionally exposed to hot, cold, wet and/or humid conditions; moving mechanical parts; high, precarious places; toxic or caustic chemicals and outside.

AAP/EEO Statement

Tank Holding provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, creed, ancestry, sexual or affectional orientation, marital or veteran status, color, religion, sex, national origin, age, disability, genetics, status regarding public assistance or any characteristic protected under federal, state, or local law.

Other Duties

Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities, and activities may change at any time with or without notice.