Since 1991, we’ve delivered fast, cost-effective, and high-quality engineering solutions across the
United States, as we are licensed nationwide
We are an American company based just outside of St. Louis, home to a talented team of over
40 in-house engineers specializing in Structural, MEP, and Civil disciplines.
We’re licensed in all 50 states, and most projects are completed with a typical turnaround of
10–15 business days (complexity can affect timing, of course).
If you’re ready to bring your ideas to life, fill out the form, and we’ll be
happy to chat about your project and how we can help.

Licensed Nationwide | Trusted Since 1991
DOTec Engineering is a multi-disciplinary, licensed nationwide engineering firm headquartered in St. Charles, Missouri. Since our founding in 1991, we’ve helped clients across the public and private sectors with reliable, cost-effective, and high-quality engineering solutions — serving the entire United States from coast to coast.
What sets DOTec apart is our commitment to precision, personalized service, and long-term partnerships. With a team of licensed engineers, including multiple PhDs and industry specialists, we bring deep expertise to every project — whether you're developing new infrastructure, scanning an existing structure, or launching a new product.
✅ Licensed Nationwide
Trusted by public & private clients across the U.S.
✅Experienced & Reliable
Decades of success with 95%+ repeat clients
✅ All-In-House Expertise
Civil, Structural, MEP, Forensic, 3D Scanning & Product Development
✅ PhD-Level Engineers
Delivering fast, high-quality, and cost-effective solutions
Get Your Project Moving — Request a Free Quote