Insights

Established Expertise GSI has a long-standing history since 1973, with a strong reputation for providing comprehensive environmental consulting and geotechnical engineering services in the Midwest, making it a trusted partner for regional infrastructure projects.

Growing Network With multiple office locations in Kansas and Nebraska and serving additional states including Missouri, Oklahoma, and Colorado, GSI offers extensive regional coverage, ideal for clients seeking localized yet scalable geotechnical solutions.

Acquisition Opportunity Being acquired by Universal Engineering Sciences in December 2021 positions GSI within a broader national network, opening avenues for cross-selling diverse engineering services and expanding project scopes across multiple sectors.

Financial Stability Generating between 50 million to 100 million dollars in revenue, GSI demonstrates solid financial health, making it an appealing partner for clients needing reliable, large-scale environmental and geotechnical services.

Technology Integration Utilizing advanced tools like MATLAB, QGIS, and HubSpot, GSI can leverage cutting-edge technology to enhance project efficiency and data analysis, presenting opportunities for clients seeking innovative environmental solutions.

GSI Engineering LLC Tech Stack

GSI Engineering LLC uses 8 technology products and services including Google Hosted Libraries, Microsoft Outlook, Deltek, and more. Explore GSI Engineering LLC's tech stack below.

  • Google Hosted Libraries
    Content Delivery Network
  • Microsoft Outlook
    Email
  • Deltek
    Enterprise Resource Planning
  • Deltek Vision
    Enterprise Resource Planning
  • Office 365
    Office Suites
  • On-Site
    Real Estate Property Management
  • Timesheets
    Time Tracking
  • Twitter
    Widgets

GSI Engineering LLC's Email Address Formats

GSI Engineering LLC uses at least 1 format(s):
GSI Engineering LLC Email FormatsExamplePercentage
FLast@gsinetwork.comJDoe@gsinetwork.com
48%
First@gsinetwork.comJohn@gsinetwork.com
2%
First.Last@gsinetwork.comJohn.Doe@gsinetwork.com
2%
FLast@gsinetwork.comJDoe@gsinetwork.com
48%

Frequently Asked Questions

Where is GSI Engineering LLC's headquarters located?

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GSI Engineering LLC's main headquarters is located at 4503 East 47th Street South Wichita, Kansas 67210 United States. The company has employees across 3 continents, including North AmericaAsiaEurope.

What is GSI Engineering LLC's phone number?

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You can contact GSI Engineering LLC's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is GSI Engineering LLC's official website and social media links?

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GSI Engineering LLC's official website is gsinetwork.com and has social profiles on LinkedIn.

What is GSI Engineering LLC's SIC code NAICS code?

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GSI Engineering LLC's SIC code is 7389 - Business Services, Not Elsewhere Classified NAICS code is 54162 - Environmental Consulting Services.

How many employees does GSI Engineering LLC have currently?

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As of April 2026, GSI Engineering LLC has approximately 58 employees across 3 continents, including North AmericaAsiaEurope. Key team members include President: J. S.Owner: R. H.Senior Vice President/Principal: D. E.. Explore GSI Engineering LLC's employee directory with LeadIQ.

What industry does GSI Engineering LLC belong to?

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GSI Engineering LLC operates in the Environmental Services industry.

What technology does GSI Engineering LLC use?

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GSI Engineering LLC's tech stack includes Google Hosted LibrariesMicrosoft OutlookDeltekDeltek VisionOffice 365On-SiteTimesheetsTwitter.

What is GSI Engineering LLC's email format?

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GSI Engineering LLC's email format typically follows the pattern of FLast@gsinetwork.com. Find more GSI Engineering LLC email formats with LeadIQ.

When was GSI Engineering LLC founded?

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GSI Engineering LLC was founded in 1973.

GSI Engineering LLC

Environmental ServicesKansas, United States51-200 Employees

GSI Engineering LLC a UES Company, was established in 1973. GSI has provided environmental consulting, geotechnical engineering, drilling services, and construction materials testing services throughout the Midwest with offices in Grand Island, Nebraska; Topeka, Kansas, and Kansas City, Kansas, with our headquarters in Wichita, Kansas. 

GSI professionals are committed to helping our clients manage risks associated with geotechnical and environmental issues and the quality control of materials and processes on construction projects. More than 7,500 clients have partnered with GSI because our engineers, geologists and scientists have delivered economical and practical solutions to their difficult problems. 

GSI’s staff consists of more than 100 experienced environmental professionals, geologists, engineers, engineering technicians, safety-trained drilling personnel and community support staff. 

Whether your project needs several soil borings and foundation recommendations or a state-of-the-art remediation system to clean up soil and ground water, our professionals are committed to providing clients with superior service. 

Our multi-office arrangement allows us to serve clients on a local and regional basis. GSI has four Midwest offices: Wichita, Topeka, and Kansas City, Kansas, and Grand Island, Nebraska. In addition to completing work in these states, GSI also serves clients in Missouri, Oklahoma, Arkansas, Colorado, Minnesota, Illinois, and South Dakota.

Section iconCompany Overview

Headquarters
4503 East 47th Street South Wichita, Kansas 67210 United States
Phone number
SIC Code
7389 - Business Services, Not Elsewhere Classified
NAICS Code
54162 - Environmental Consulting Services
Founded
1973
Employees
51-200

Section iconFunding & Financials

  • $25M$50M

    GSI Engineering LLC's revenue is estimated to be in the range of $25M$50M

Section iconFunding & Financials

  • $25M$50M

    GSI Engineering LLC's revenue is estimated to be in the range of $25M$50M

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