
RJN Group, Inc.
Celebrating 50 Years of Engineering Intuition, Innovation, & Insights for Water Infrastructure
Downers Grove, IL
Explore capabilities, project experience, and office locations to build your shortlist.

Celebrating 50 Years of Engineering Intuition, Innovation, & Insights for Water Infrastructure
Downers Grove, IL

Improving lives by building strong communities.

Enduring Design & Engineering for the islands
Hagatña, GU+1

The Difficult, We Do Right Away. The Impossible, Takes A Little Longer.
St. George, UT

As in real life, complex engineering designs demand a pragmatic approach.
North Augusta, SC+1

Engineering expertise and superior client service
Cheyenne, WY+3

Engineering Surveying and Land Planning
Hagerstown, MD+2

Professional civil engineering services in New Mexico and Arizona
Edgewood, NM

Water Systems and Wastewater Systems.
Coos Bay, OR+3

Engineers, Planners, Designers, Surveyors
Great Falls, MT+2
Planning and Feasibility Studies.
Tucson, AZ

Acoustic, Audiovisual & Technology Design Consultants
New York, NY+7

Inspiring sustainable solutions for the world's infrastructure
Boise, ID

Multidisciplinary architecture, structural design, and project management services
Humacao, PR+1

Innovation. Integrity. Excellence.
Moncks Corner, SC

MEP Design & Consulting Solutions

We Make a Difference
Pittsburgh, PA+17

Many Disciplines One Team

Civil Engineering and Site Plans.
Charlotte, NC+6
Dedicated to Water, Driven by Design.
Denver, CO+3

Providing professional civil engineering and land surveying services since 1978.
Danvers, MA+1

Civil Engineering & Land Development and Investigation & Due Diligence.
Las Vegas, NV

Turning your ideas into reality and creating structures that stand the test of time.
Fort Worth, TX

Architecture and Structural Engineering.
Rockford, IL