Preconstruction Estimating Intern

Our culture is rooted in a shared vision — to help keep the world’s most precious resource safe — and in the core values that guide us in pursuing this vision and delivering on our mission to clients.

We provide the highest quality liquid storage design and construction services at the best long-term value with an unrivaled customer experience. We have built over 3,500 pre-stressed concrete liquid storage tanks over the past 90 years around the country and world, as a result we have become the leader in the industry when it comes to quality and innovation.

As a Preconstruction Estimating Intern at DN, you will gain hands-on experience in the exciting field of civil engineering and construction. With a dedicated mentor in the industry you will contribute to real projects, develop valuable skills, and learn about the lifecycle of heavy-civil construction projects, from conception to completion. This is a great opportunity to gain valuable experience, build your future, and make a tangible impact in the world!

We are seeking an intern local to San Diego, CA able to work approximately 20 hours per week beginning January 2026, with summer internship opportunities available.

• Assist Regional Estimators with the evaluation of project site conditions and the generation of tank site layout drawings using AutoCAD.
• Prepare earthwork takeoffs using Civil 3D and sitework cost estimates using Excel.
• Solicit bid level pricing for cranes, rebar installation, fence work, and various other subcontractor scopes of work.
• Preparation of Requests for Quotation after local subcontractors have been identified.
• Gain insight into the process of developing and bidding construction projects.
• Visit our local tank construction sites.

• Currently enrolled in an Engineering or Construction Management undergraduate program. A concentration in Civil Engineering is preferred.
• Experience working with CAD software (preferably AutoCAD) and Microsoft Office (Word, Outlook, and Excel).
• Excellent communication and time management skills.
• Ability to multi-task and prioritize work assignments.
• Ability to problem-solve in individual and team settings.
• Transportation to El Cajon, California

• Competitive Hourly Rate
• Paid Time Off
• Scholarship Opportunity
• Gym membership discount
• Employee referral program
• Leadership training programs

$24 - $25 an hour

DN offers a starting hourly rate of $24 per hour for interns and co-op students. This compensation is based on market rates and determined by considering many factors such as external market salary survey data, internal data for comparable roles, and the operational and budgetary objectives of the company.

DN is An Equal Opportunity/Affirmative Action Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or veteran status, age, or any other federally protected class. All employment is decided on the basis of qualifications, merit, and business need.