Salary Range: 24 to 25 (Currency: USD) (Pay period: per-hour-wage)

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.

Roles and Responsibilities:

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.

Qualifications:

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

Benefits:

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

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.

About the company

DN designs and builds prestressed concrete liquid storage tanks to safely store water. Its tanks are designed and constructed to deliver long-term performance, durability, reliable operation, minimal maintenance, and the lowest ownership cost. With 90+ years of experience and 10 regional offices plus 3 facilities in the Boston, Dallas, and San Diego areas, DN emphasizes strong client collaboration and project execution to meet current and future water storage needs. The company differentiates itself through deep experience, a global reach, a focus on total value and customer experience, and durable, low-maintenance tank solutions. Its goal is to provide high-quality design and construction services worldwide that combine safety, reliability, and cost efficiency for water storage projects.

Company Size

201-500

Company Stage

N/A

Total Funding

N/A

Headquarters

Wakefield, Massachusetts

Founded

2010

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Simplify's Take

What believers are saying

September 3, 2026 equity reached €386.9 million, up sharply from €288.5 million.
Algene hit first harvest of 4,500 liters and gained GMP certification in July 2026.
Soapeya earned Dermatest's 'excellent' rating and completed a Syria deployment in summer 2026.

What critics are saying

September 3, 2026 H1 net income fell to €0.4 million from €3.5 million.
DN Group values holdings conservatively under HGB, delaying upside recognition and masking weak assets.
If Algene or Soapeya stall, the portfolio narrative collapses and capital raising weakens.

What makes DN unique

DN Group AG backs impact companies in AI, mobility, circular economy, health, and energy.
October 1, 2026 hire Antje Biber strengthens its capital-and-impact investor network.
June 24, 2026 AGM confirmed broad shareholder backing for its portfolio strategy.

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Benefits

Health Insurance
401(k) Retirement Plan
Paid Time Off + Paid Holidays
Flexible Spending Account (FSA)
Disability Insurance
Life Insurance
Tuition Reimbursement
Gym Reimbursement
Remote Work Options
Hybrid Work Options
Professional Development Budget
Conference Attendance Budget

DN

Preconstruction Estimating Intern

About the job