Substation Engineering Intern

Power Internship Program

At HDR, our employee-owners are fully engaged in creating a welcoming environment where each of us is valued and respected, a place where everyone is empowered to bring their authentic selves and novel ideas to work every day. Each and every role throughout our organization makes a difference in our ability to change the world for the better. Read further to learn how you could help make great things possible not only in your community, but around the world.

Now accepting applications for our Summer 2026 Internship Program! HDR is seeking a Substation Engineering Intern to join our Brentwood, TN, Chattanooga, TN, or Lexington, KY office.

Primary Responsibilities

• Preparation of engineering drawings, calculations, analyses, reports, and designs for electrical substations (Low, Medium, and High Voltage)
• Preparation of calculations, design sketches, and redline drawings
• Working with Designers and CADD Technicians to develop drawings in accordance with national design standards, safety codes, and project specifications and requirements
• Developing design deliverables including one-line diagrams, protection and control schematics, wiring diagrams, SCADA schemes, communications plans, substation physical layouts, material lists, conduit and cable sizing/routing, AC and DC systems calculations and sizing, and substation grounding
• Performing site visits during the design, construction, and as-built phases of projects

Preferred Qualifications

• Prefer 2 years completed toward degree with 3.0+ GPA
• Demonstrated knowledge of software packages related to field of study/industry
• Preference given to local candidates

Required Qualifications

• Currently enrolled in an undergraduate or graduate Engineering program
• Attention to detail
• Possess strong problem-solving and communication skills
• Basic Microsoft Office skills
• An attitude and commitment to being an active participant of our employee-owned culture is a must

HDR is our company. Together, we build on each other's life experiences and perspectives to make great things possible every day. This shapes our collaborative culture, encourages organizational trust and connects us closer to the clients and communities we serve. As employee owners, we all have a role in creating an inclusive environment where each of us is welcomed, valued, respected and empowered to bring our authentic selves to work every day. Our eight Employee Network Groups (Asian Pacific, Black, Hispanic/Latino(a), LGBTQ+, People with Disabilities, Veterans, Women, Young Professionals) help create a sense of belonging and foster a supportive environment where everyone is empowered to engage and contribute. Each group has an executive sponsor and is open to all employees.