Senior Substation Relay + Control Engineer

ISG

Philadelphia, PA Posted October 22, 2026

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On-site Full-time Senior
Salary Range

$105,000 - $150,000

Job Description

We are seeking a Senior Substation Relay + Controls Engineer to lead the design and delivery of protection and control systems for high-voltage transmission and distribution substations supporting one of ISG's longstanding clients, FirstEnergy. In this role, you will develop and review one-line and three-line diagrams, AC/DC schematics, wiring diagrams, panel layouts, equipment lists, and other critical design deliverables while serving as a technical resource for clients and project teams. You will solve complex engineering challenges, mentor junior staff, and help deliver safe, reliable, and compliant designs that support the electric grid.

Within our Energy Business Unit, ISG’s Power Group plays a vital role in delivering resilient infrastructure solutions, supporting projects and clients nationwide.

We operate as a one-profit-center firm and we work as one team across all offices, sharing resources, expertise, and opportunities to best serve our clients and support our employee owners.  Regardless of where this position is posted, we encourage all qualified candidates from any ISG geography to apply.Similar projects and initiatives you may contribute to as part of this role:

Required Skills
technical drawings
How to apply

You apply on ISG’s own careers site. No account needed.

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