Senior Millwright - PLC, Instrumentation & Reliability

Greif; United States; On-site; USD 70,000 - 100,000; Full time

Job summary

Greif is seeking a Senior Millwright to join our maintenance team at our United States facilities. You will lead reliability-focused maintenance, troubleshoot electrical, pneumatic, and mechanical systems, and collaborate with operations to minimize downtime.

You will perform instrumentation work, calibrations, and PLC/HMI diagnostics, while maintaining safety standards and CMMS records to ensure dependable asset performance and uptime.

Qualifications

• High School diploma or equivalent required plus 4+ years of experience.
• Strong troubleshooting skills across electrical, mechanical, hydraulic and instrumentation systems.
• Experience with PLC/HMI, instrumentation calibration, loop checks, and documentation.

Responsibilities

• Troubleshoots, repairs, and rebuilds electrical/electronic, mechanical, hydraulic, and pneumatic equipment to restore safe and reliable operation.
• Performs instrumentation and controls work, including installation, calibration, configuration, and loop checks of sensors, transmitters, analyzers, valves, and related devices.
• Diagnoses PLC/HMI/drive issues at the I/O and device level; isolates faults using schematics, P&IDs, ladder logic, and diagnostic tools; implements corrective actions or partners with controls specialists as needed.
• Executes preventive and predictive maintenance (e.g., vibration, infrared, oil analysis, ultrasound) and translates findings into work orders that reduce unplanned downtime.
• Conducts root cause analyses of recurring failures; recommends and implements reliability improvements (design changes, condition monitoring routes, spare-part strategies).
• Plans and prioritizes work orders, determines repair approach (repair/replace/upgrade), and coordinates with operations to schedule equipment access and safe startup.
• Completes calibrations and documentation to required standards; maintains as-found/as-left records and updates CMMS histories and asset hierarchies.
• Identifies and requests critical spares; provides technical input to MRO inventory, vendor selection, and service contract needs.
• Reads and updates technical drawings (electrical schematics, P&IDs, single-line diagrams) and suggests design improvements for maintainability and reliability.
• Partners with production, engineering, quality, and EHS to ensure safe work practices (e.g., lockout/tagout) and compliance with company procedures and applicable standards.
• Mentors colleagues and shares troubleshooting/reliability best practices; may lead small maintenance tasks or contractor activities on shift.
• Performs other duties as assigned.

Skills

Troubleshooting skills

Instrumentation calibration

PLC/HMI diagnostics

CMMS experience

Safety compliance

Education

High School diploma or equivalent

Tools

CMMS software

Industrial drawings

Job description

Greif is seeking a Senior Millwright to join our maintenance team at our United States facilities. You will lead reliability-focused maintenance, troubleshoot electrical, pneumatic, and mechanical systems, and collaborate with operations to minimize downtime.

You will perform instrumentation work, calibrations, and PLC/HMI diagnostics, while maintaining safety standards and CMMS records to ensure dependable asset performance and uptime.