Principal (Relay) Engineer, PE
Confidential
Posted: March 24, 2026
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Quick Summary
Senior Relay Engineer, PE (hybrid opportunity) with strong technical expertise in Communications Engineering, Electrical Engineer, and experience in the Electrical and Telecommunications industry.
Required Skills
Job Description
Senior Relay Engineer, PE (hybrid opportunity)
McCall Thomas Engineering Company, Inc. is seeking a senior-level Principal Engineer, PE with Relay experience.
Job Location: Hybrid with the requirement to work locally in the Orangeburg or Moncks Corner, SC office 20 hours per week.
Approximate salary range, depending on level of experience: $140,000 to $170,000
McCall-Thomas Engineering is a trusted leader in the Electrical and Telecommunications industry, committed to delivering innovative and reliable solutions. With expertise in Communications Engineering, Electrical Engineering, Civil Engineering, Electric Utility Services, and Field Operations, we provide comprehensive turn-key projects tailored to meet our clients' needs. McCall-Thomas Engineering we have been providing quality engineering and technical services since 1945.
A McCall-Thomas Principal Engineer, PE (Relay) will provide engineering and technical expertise to transmission and distribution substation engineering and design teams for the purpose of delivering safe, cost-effective, and quality engineering and design services. This role will entail both direct billable client work and project management support for projects. The employee will be expected to take initiative on discipline-specific work for projects, perform assigned engineering duties and manage project schedules and budgets. He or she will also support proposal development and project cost estimating.
Primary responsibilities for this role:
Research, investigate and evaluate new technological applications and materials to be used for the design of electrical substations
Develop project designs for transmission, distribution and generation electrical substations to include the specification and procurement of required equipment and materials
Develop substation ground grid designs
Provide power system and protection engineering services and technical assistance to clients
Assist field personnel with the installation of specified material
Perform soil resistivity tests and fall of potential tests using Syscal Jr.
Support factory acceptance testing, site testing & commissioning of substation equipment
Design and implement protective relay schemes
Analyze and troubleshoot relay system issues
Participate in system upgrades and modifications
Prepare technical reports and documentation
Familiarity with SCADA systems and their integration with relay protection
Coordinate with other engineers and technicians to ensure proper installation and operation of protective relays
Work with the Engineering Manager to define project objectives, prepare design estimates, and define project requirements and design approaches
Coordinate design activities to ensure installation and operations will comply with specifications, codes, and client requirements
Identify, analyze, and resolve engineering, technical and design problems
Prepare thorough, timely, and accurate technical reports, correspondence, documentation, calculations, and sketches that meet client requirements
Perform independent work as well as provide second tier independent review of work performed by others including calculations, drawing preparation, drawing accuracy, material BOM, and equipment specifications.
Interact with clients’ engineering and technical teams on a regular basis; represent McCall-Thomas Engineering positively and professionally, and develop and maintain professional relationships with clients
Continually improve job-related engineering, technical and professional knowledge, skills, process development, and performance
This job description is not intended to be all-inclusive. This employee may perform other related duties as required to meet the ongoing needs of the organization.
What Will You Need (Candidates MUST meet the following minimum criteria for consideration):
Minimum 15+ years' Relay experience with an electric utility or engineering consulting firm
Eligibility to work in the US without sponsorship (required)
Bachelor's degree in electrical engineering from an ABET-accredited engineering program
PE license required within 90 days
Valid driver’s license with clean driving record
What We Offer:
At McCall-Thomas, we offer employees the chance to work with great people on exciting projects, with opportunity for growth. We also provide a full range of benefits for employees, such as:
Competitive compensation
100% company-paid medical insurance
Company-paid long-term disability insurance
Company-paid life insurance
401k plan with employer match up to 5%
Paid time off and holiday leave
Stock ownership opportunities