Senior Maintenance Mechanic

Senior Maintenance Mechanic

Company:
Tri Mas Company LLC

Primary

Location:

4250 Oasis Street, Mesa, AZ 85215 USA

Workplace Type:
On-site

Employment Type:

Hourly | Full-Time

Function:
Manufacturing Production / Distribution

Equal Opportunity Employer Minorities/Women/Veterans/Disabled

The Senior Maintenance Mechanic is responsible for maintaining and improving the reliability of CNC production equipment, including Swiss lathes and related systems, by performing advanced troubleshooting, repairs, and preventive maintenance. This role operates with a high level of independence, leads complex diagnostics across mechanical, electrical, pneumatic, and hydraulic systems, and ensures accurate work order documentation while supporting safe, efficient shop operations.

This shift is for 1st (Friday through Sunday: 6:00am to 6:30pm).

• Perform preventive maintenance (PM) on CNC production equipment, including Swiss lathes and supporting systems, and ensure PM completion aligns with production and maintenance schedules.
• Respond to equipment issues during production and independently diagnose, troubleshoot, and repair mechanical, electrical, pneumatic, and hydraulic systems.
• Lead root cause analysis of equipment failures and implement corrective actions to reduce recurring downtime.
• Create, update, and close work orders in the maintenance system, ensuring detailed and accurate documentation of work performed, parts used, downtime causes, and corrective actions.
• Read and interpret equipment manuals, electrical schematics, and technical documents to perform advanced maintenance and repairs.
• Support and guide junior maintenance personnel by providing technical direction and assistance in troubleshooting and repair activities.
• Coordinate with production and leadership to prioritize maintenance activities based on equipment criticality and production impact.
• Assist with equipment setup, adjustments, installations, and process improvements to support production efficiency.
• Follow and enforce all safety procedures, including lockout/tagout (LOTO), and ensure equipment is in a safe condition prior to returning to service.
• Maintain organization of tools, parts, and work areas, and support identification and management of critical spare parts and maintenance inventory.
• Drive continuous improvement efforts by identifying trends in equipment performance and recommending process or maintenance improvements.
• Experience in MIG welding is a plus.

• Communication Proficiency
• Problem Solving/Analysis
• Advanced Mechanical and Technical Aptitude
• Attention to Detail
• Safety Awareness and Compliance
• Time Management and Task Prioritization
• Teamwork and Collaboration
• Leadership and Mentorship
• Initiative and Accountability

The employee is occasionally required to sit, climb, or balance; and stoop, kneel, crouch, or crawl. The employee must frequently lift and/or move up to 10 pounds and occasionally lift and/or move up to 25 pounds. Specific vision abilities required by this job include close vision, distance vision, color vision, peripheral vision, depth perception, and ability to adjust focus.

Work is performed in a CNC machine shop environment with exposure to high noise levels, moving mechanical equipment, temperature fluctuations, and metalworking processes. The role regularly involves working around production machinery including CNC machines, bar feeders, conveyors, coolant systems, and related equipment.

Potential hazards include exposure to moving mechanical parts, sharp edges, hot surfaces, metal chips, metalworking fluids, and airborne particulates. Hazards include cuts, burns, strains, and pinch points. Appropriate personal protective equipment (PPE) such as safety glasses, hearing protection, and protective clothing is required.

This is a full-time position. Hours of work may vary dependent on operational needs.

Travel is primarily local during the business day, although some out-of‑the‑area and overnight travel may be expected.

• 5–8+ years of maintenance experience in a manufacturing or…