Lead Mechanical Maintenance Supervisor, Power Generation

Tallgrass; Cheyenne (WY); On-site; USD 110,000 - 160,000; Full time

Job summary

Tallgrass is seeking a Mechanical Maintenance Supervisor to lead all mechanical maintenance at the Cheyenne Energy Center. This off-grid, large-scale AI-dedicated campus plans up to 10 GW with gas turbines and CCGT technologies.

You will direct mechanical craft personnel and contractors, ensuring safe, reliable, and cost-effective maintenance of turbines, HRSGs, and balance-of-plant systems. You will apply HP principles, drive continuous improvement, and own execution quality through KPIs like

Qualifications

• 7+ years of mechanical maintenance experience in large-scale power generation or heavy industrial operations.
• 3+ years of supervisory or leadership experience.
• Experience with gas and steam turbine components, HRSG systems, and rotating equipment.
• Proficiency in Maximo CMMS.
• Intermediate proficiency in MS Office applications.

Responsibilities

• Execute PM/CM activities on turbines, HRSGs, heat exchangers, pumps, compressors, gearboxes, valves, rotating equipment, and piping systems.
• Support major outage planning, scope development, and execution in partnership with Planning & Scheduling and Operations.
• Ensure high-quality work order management and backlog health using Maximo.
• Lead RCAs, defect elimination efforts, and predictive maintenance programs including vibration, thermography, lubrication/oil analysis, and ultrasonic inspections.
• Maintain documentation, OEM technical bulletins, torque specs, and as-built records.
• Ensure PSM/MOC compliance where applicable for mechanical integrity and pressure boundary work.
• Manage contractor scopes, budgets, quality, and schedule adherence.
• Mentor mechanical craft personnel and support continuous improvement initiatives.
• Supervise mechanical maintenance activities for combined-cycle systems, including HRSG pressure parts, duct burners, expansion joints, dampers, steam turbines, condensers, cooling water systems, and auxiliary steam equipment.
• Ensure maintenance execution accounts for thermal transients, startup/shutdown sequencing, and cycling impacts on mechanical components.
• Lead inspection, repair, and replacement activities for HRSG components, including tube systems, insulation, casing, stack components, and safety valves.
• Support steam turbine and condenser maintenance, including lube oil systems, gland seal systems, vacuum systems, circulating water systems, and condenser tube inspection and cleaning.
• Coordinate mechanical scopes during integrated outages to align gas turbine, HRSG, and steam turbine work windows.
• Lead mechanical root cause analyses for combined-cycle equipment failures and recurring defects, with emphasis on thermal fatigue, flow-accelerated corrosion, and condenser performance degradation.
• Ensure mechanical work packages, procedures, and as-built documentation accurately reflect combined-cycle system configuration.

Skills

Mechanical maintenance

Supervisory leadership

Gas/steam turbines

Maximo CMMS

MS Office

Education

High school diploma or equivalent

Tools

Maximo CMMS

MS Office

Job description

Tallgrass is seeking a Mechanical Maintenance Supervisor to lead all mechanical maintenance at the Cheyenne Energy Center. This off-grid, large-scale AI-dedicated campus plans up to 10 GW with gas turbines and CCGT technologies.

You will direct mechanical craft personnel and contractors, ensuring safe, reliable, and cost-effective maintenance of turbines, HRSGs, and balance-of-plant systems. You will apply HP principles, drive continuous improvement, and own execution quality through KPIs like