Senior Electrical Engineer - Substations - Power and Energy in Denver

Who We Are

Atwell, LLC is a bold leader in the consulting, engineering, and construction services industry, delivering a broad range of creative solutions to clients in the real estate & land development, and energy markets. We have a strong presence and a diverse, award-winning project portfolio. Atwell is a privately owned company, with 2,000+ passionate team members across 75+ locations and growing!

Atwell, LLC is a proud recipient of the following 2025 awards:

• Ten consecutive years in a row as a "Best Place to Work" by Zweig Group (#11)
• Recognized as #70 in the ENR Top 500 Design Firms, ranked in every region
• Recognized in Crain's "Fast 50" as one of the fastest-growing companies (#14)
• Recognized as the 2025 ENR Design Firm of the year for the southeastern US

Atwell is seeking a Substation Engineer to join our growing Power & Energy team. We are a full-service consulting firm supporting the design and execution of power and power delivery systems across a broad range of markets, including utility‑scale wind, solar, BESS, substations, transmission, and distribution infrastructure.

This role offers the opportunity to support impactful utility and renewable energy projects, work across multi-disciplinary teams, and contribute to both and/or substation physical design and protection & controls engineering.

• Support the design and engineering of high-voltage substations for utility, renewable, and power delivery projects
• Contribute to both physical substation design and Protection & Controls (P&C) engineering packages
• Lead or support engineering tasks from project kickoff through IFC/design package completion
• Coordinate closely with civil, structural, SCADA, relay, and project management teams to deliver integrated solutions
• Prepare technical deliverables including one-lines, three-lines, schematics, wiring diagrams, panel layouts, grounding plans, conduit/raceway layouts, cable schedules, bills of material, specifications, reports, and client-facing documents
• Provide engineering support during procurement, construction, commissioning, and startup phases
• Occasionally travel for field walkdowns, client meetings, factory acceptance testing, or construction support

• Develop and support substation physical layout and design packages for high-voltage projects
• Prepare or review:
• General arrangement drawings
• Plan and elevation drawings
• Grounding layouts
• Conduit and cable routing plans
• Control building layouts
• Equipment connection details
• Foundation and equipment interface coordination
• Coordinate major equipment layouts including transformers, breakers, switches, bus systems, CCVTs/PTs, CTs, panels, batteries, and other station equipment
• Work closely with civil and structural teams to align grading, foundations, trenching, and equipment placement
• Support development of material lists, specifications, and installation details

• Develop and support P&C design packages including:
• One-line and three-line diagrams
• AC/DC schematics
• Wiring diagrams
• Relay panel layouts
• Interconnection diagrams
• Communication diagrams
• SCADA point lists
• Perform engineering calculations such as battery sizing, voltage drop, conduit fill, and cable sizing
• Support relay setting development, protection philosophies, and coordination with OEMs and system stakeholders
• Contribute to arc flash, coordination, and other protection-related studies as applicable

• Bachelor's Degree in Electrical Engineering from an ABET-accredited program
• 5+ years of experience in substation engineering, power delivery, utility, or renewable energy projects
• Experience supporting physical design, Protection & Controls, or both within substation projects
• Strong understanding of high-voltage substation systems and design practices
• Experience developing engineering deliverables such as one-lines, schematics, wiring diagrams, layouts, grounding plans, and design packages
• Familiarity with applicable industry codes and standards including NEC, NESC, IEEE, ANSI, and NFPA
• Proficiency with tools such as AutoCAD, Bluebeam, and Microsoft Office

• Professional Engineer (PE) license, or ability to obtain
• Experience…