The MasTec Companies

Substation Engineer

Job Locations US-TX-San Antonio
ID 2022-15045
Position Type
Regular Full-Time


Company Summary

MasTec, Inc. is a leading national infrastructure construction company. Utility Services Group (USG) is part of the Power Delivery Segment and focuses on the electrical distribution, substation, water, transmission, and natural gas distribution infrastructures.


Job Summary

This position will provide engineering for the design of substation facilities for voltages up to and including 500 kV. This includes new substations and switch yards, modifications, additions, and upgrades to existing facilities. Substation physical design responsibilities include overall engineering and analysis for new switch yards and substations, additions, and modifications. Includes equipment specifications and procurement support, layout and general arrangements for all major equipment and structures required for high voltage switch yards or substation.


  • Provide detailed design including:
    • substation grounding calculations and studies
    • lightning protection and insulation coordination
    • lighting
    • bus calculations
    • transformer and bus sizing calculations
    • fault calculations
    • AC and DC auxiliary system sizing calculations
  • Relay protection & control engineering, including:
    • one & three-line diagrams
    • schematics and wiring diagram
    • control and relay panel layouts
    • SCADA
  • Track emerging engineering technologies and standards to improve design efficiencies and quality
  • Participate in industry organizations to stay current with business trends
  • Setting and maintaining technical and safety practices
  • Ensuring project schedules and goals are met
  • Working with other engineering teams to meet customer requirements



  • Understanding of a matrix management environment
  • Significant experience in the Electric Utility arena
  • Four-year engineering or technical degree
  • Computer proficient including AutoCAD


  • 10 + years of relevant design experience in Substation Engineering
  • PE License 
  • Experience with ETAP, CAPE, CYME, ASPEN or similar software

Physical Demands and Work Environment 

This job operates in a professional office environment. This role routinely uses standard office equipment such as computers, phones, copiers, and scanners.  


The physical demands described here are representative of those that must be met by an employee to successfully perform the essential functions of the job. This position is primarily sedentary, with some filing or lifting required. Must be able to bend and lift and carry up to 50 pounds.  


Please note this job description is not designed to cover or contain a comprehensive list of activities, duties, or responsibilities that are required of the employee for this job. The Company reserves the right to revise or change the job duties as the need arises. Management reserves the right to change the description, duties, or work schedules to accommodate individuals with disabilities.  


Benefits available include Medical, Dental, Vision, Disability and Life insurance, a 401k plan and Employee Stock Purchase plan. MasTec is a publicly traded company MTZ (NYSE). 


Equal Employment Opportunity: 

The Company’s policy is not to unlawfully discriminate against any applicant or employee based on race, color, national origin, ethnicity, sex, gender, sexual orientation, religion, marital status, age, disability, genetic information, veteran status, or any other basis protected by applicable law and EEOC regulations. The Company also prohibits harassment of applicants or employees based on any of these protected categories.



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