Civil Engineering Internship (Summer 2027)

OneEnergy; Boulder (CO); On-site; USD 29,000 - 40,000; Full time

Job summary

OneEnergy Renewables in Boulder, CO is offering a Civil Engineering Intern role focused on utility-scale solar and distributed generation projects. You will assist in designing site civil features, coordinate with electrical engineers, and gain hands-on experience with AutoCAD Civil 3D and SWPPP processes.

The position reports to the Associate Director - Civil Engineering, involves collaboration across Development, Engineering, Accounting, Finance, and Legal, and may include site visits.

Qualifications

• Currently enrolled in a BS in Civil or Environmental Engineering at an ABET-accredited university.
• Familiarity with AutoCAD Civil 3D preferred.
• Experience with HydroCAD preferred.
• Knowledge of HEC-RAS or Flo2D preferred.
• Exposure to GIS tools and mapping software is helpful.
• Strong written and verbal communication skills.

Responsibilities

• Assist in designing civil engineering features for utility-scale solar arrays including grading and access routes.
• Collaborate with electrical engineers to optimize array layouts for site constraints.
• Prepare and format drawing plansets and maintain AutoCAD templates.
• Produce redlines from reviews by engineers, developers, and AHJs.
• Review Geotechnical and Wetland Delineation reports for project compliance.
• Develop SWPPP elements and erosion/dust control plans for projects.
• Read and interpret project documents to meet permit/site requirements.

Skills

Attention to detail

Self-motivated

Analytical thinking

Team collaboration

Time management

Education

BS in Civil or Environmental Engineering (ABET accredited)

Tools

AutoCAD Civil 3D

HydroCAD

HEC-RAS or Flo2D

GIS / Google Earth

Job description

About OneEnergy Renewables

OneEnergy’s mission is to make clean energy the #1 source of electricity for consumers and utilities. We develop solar energy and battery energy storage (BESS) projects across the United States in community solar, distributed generation, and large utility scale project segments. Our diverse project pipeline, multiple locations across the US, and unique multidisciplined team sets us apart.

About OneEnergy Renewables

OneEnergy’s mission is to make clean energy the #1 source of electricity for consumers and utilities. We develop solar energy and battery energy storage (BESS) projects across the United States in community solar, distributed generation, and large utility scale project segments. Our diverse project pipeline, multiple locations across the US, and unique multidisciplined team sets us apart.

We are a dynamic and innovative renewable energy industry company committed to excellence, collaboration, and driving positive change in our industry.

About The Role

This Civil Engineering Intern will assist in the designing of utility-scale and distributed generation solar energy facilities site civil features including grading plans, pile placement and elevation plans, hydrological engineering, stormwater management plans, and Storm Water Pollution Prevention Plans (SWPPP). All site design features need to meet or exceed Conditional Use Permits requirements, building permit conditions and other site requirements.

The Civil Engineering Intern will report to the Associate Director - Civil Engineering. They will manage multiple engineering efforts with competing deadlines and resources, while working cohesively and collaboratively across companywide functional teams including Development, Engineering, Accounting, Finance, and Legal. This position is primarily design-based with the occasional opportunity to visit project sites.

This role offers an opportunity to gain hands‑on experience in renewable energy project engineering while contributing to the successful delivery of clean energy infrastructure.

What You'll Do

• Assisting in the design of the civil engineering features for a large-scale solar array including grading design, access roads, attachment means, and modifications to support structures.
• Collaborating with the electrical engineering team on optimizing array layouts across different topographical or site challenges.
• Formatting drawing plansets and maintaining AutoCAD template files and standards.
• Completing redlines based on reviews from Engineers, Developers and local AHJ.
• Reviewing and interpreting Geotechnical Reports as well as Wetland Delineation Reports.
• Producing cut/fill plans and quantities using AutoCAD Civil3d to ensure the solar array meets the maximum slope tolerance of the mounting system and optimizes the foundation material expenses.
• Participating in the development of the Stormwater Pollution Prevention Plan (SWPPP), erosion, and dust control measures for the Project.
• Reading, interpreting, and understanding project documentation with a focus on fulfilling all the permit and site requirements with value driven designs.
• Researching DOT, utility, and storm water and erosion control requirements for in or out of state jurisdictions.

Qualifications

What you'll bring

• Currently enrolled in a BS Degree in Civil or Environmental Engineering from an ABET accredited university.
• Exposure to AutoCAD Civil 3D preferred.
• Exposure to HydroCAD preferred.
• HEC-RAS or Flo2D modeling experience preferred but not required.
• Exposure to Google Earth or other mapping/GIS tools, as well as the use of online and public resources such as federal/state/county databases.
• Technology savvy with advanced computer skills.
• Strong attention to detail with a high level of integrity and organizational capacity to manage time and prioritize.
• Self-motivated with proven ability to take ownership, initiative, and accountability.
• A proven ability to provide efficient, timely and reliable service to internal and external stakeholders.
• Ability to contribute to an amicable team working environment.
• Keen analytic, organization, and problem-solving skills.
• Ability to travel and access sites of varying terrain. Position may require frequent travel.
• Brings a hands‑on, collaborative approach and takes pride in delivering high-quality work.
• Demonstrated qualities of integrity, credibility, and professional responsibility.
• Position requires minimal driving; must carry an active driver’s license with acceptable driving record.
• A willingness to contribute to our culture which thrives on building trust and holding one another accountable.

Dates And Deadlines

• The 12-week internship will run from Tuesday, June 1st - Friday, August 20th. Start and ends dates can be flexed based on school schedule.
• Applications are due on Monday, October 12th.

Compensation

OneEnergy’s compensation packages are dependent on an array of factors including, but not limited to skill sets, experience and training, licensure and certifications, geographic location, and other organizational needs. Interns will be paid an hourly rate of $25/hour. We recognize an equitable energy transition requires the participation of diverse communities, groups, and institutions. OneEnergy is an equal opportunity employer and does not discriminate against otherwise qualified applicants on the basis of actual or perceived race, color, creed, religion, ancestry, citizenship status, age, sex, marital status, sexual orientation, national origin, disability or handicap, veteran status, or any other characteristic protected by applicable federal, state, or local laws.