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Mechanical Service Operator

What Will You Do?

  • Help to prepare locomotives to pull freight by moving, fueling, supplying and cleaning them
  • Operate a fork lift, handle materials and keep the shop in shape
  • Work with Diesel Mechanics to keep the locomotives running efficiently 

What Will You Learn?

As a Mechanical Service Operator (MSO), you’ll be working with a team of other dedicated railroaders to provide vital maintenance and services to trains so they can continue to serve Union Pacific customers across North America. On this vital team, you’ll become familiar with all functions of the shop environment and will gain a big-picture understanding of Union Pacific's mechanical operations.


As a newly hired Mechanical Service Operator, you can expect to make about $26 an hour, with actual pay depending on location and Union-negotiated agreements.


As a Mechanical Service Operator, also called a Fireman/Oiler, you will receive safety, locomotive and task-specific training during your first days of employment – and throughout your career. During your first year, you will learn how to use a forklift and special cleaning equipment for locomotives, and you will learn how to clean and service locomotive cabs. You will work toward being licensed to operate and move locomotives around the locomotive shop and other facilities.

Potential Career Path

MSO Career Progression

See Open Positions 


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