Maintenance Technician - Tier 3

Job Description

Job Description

Position : Maintenance Technician (Tier 3) Location : St. Charles, IL Shift Schedule : 8 : 00 a.m. - 4 : 30 p.m. | Monday-Friday

Summary :

The Tier 3 Maintenance Technician is a senior-level maintenance professional responsible for advanced troubleshooting, diagnostics, and repair of complex manufacturing equipment and facility systems. This role serves as a technical expert, supports continuous improvement, leads root cause analysis, and ensures optimal equipment performance and minimal downtime.

Key Responsibilities :

Perform advanced troubleshooting and diagnostics on electrical, mechanical, hydraulic, pneumatic, and PLC-controlled systems

Mentor and support lower-tier maintenance technicians through training and technical guidance

Lead and participate in root cause analysis (RCA) and implement corrective actions

Program, troubleshoot, and maintain PLCs, HMIs, motor controls, and variable frequency drives (VFDs)

Complete preventive and predictive maintenance tasks accurately and on schedule

Read and interpret electrical and mechanical schematics, blueprints, and equipment manuals

Install, repair, and upgrade machinery and equipment as part of capital projects or system improvements

Assist with developing and updating maintenance SOPs and equipment documentation

Follow OSHA requirements, safety standards, and company policies at all times

Support facility systems including HVAC, compressed air, boilers, and water treatment

Collaborate with engineering, production teams, and external vendors on repairs and upgrades

Perform other duties as assigned by the Maintenance Supervisor or Maintenance Manager

Qualifications :

High school diploma or equivalent required

Technical certification or associate degree in industrial maintenance, electromechanics, or related field preferred

Minimum 5 years of maintenance experience in an industrial or manufacturing environment

Strong knowledge of PLCs (Allen-Bradley, Siemens), HMIs, automation systems, and sensors

Advanced troubleshooting skills in electrical, mechanical, hydraulic, and pneumatic systems

Ability to lead by example, prioritize tasks, and work independently

Proficiency with CMMS (Computerized Maintenance Management Systems)

Forklift and aerial lift certification required or ability to obtain

Ability to read and interpret blueprints, schematics, and technical manuals

Strong communication skills and ability to train and document work clearly

Physical Demands :

• Frequent standing, walking, bending, lifting, pushing, pulling, and reaching

Ability to lift up to 50 lbs frequently and 60 lbs occasionally

Clear vision at close and far distances, peripheral vision, depth perception, and ability to distinguish colors

Ability to work in physically active and hands-on maintenance environments

Work Conditions :

Required PPE may include safety glasses, ear protection, hairnets, hard hats, and face coverings