Carollo Engineers, Inc.

Legal name, DBA and former names

• Carollo Engineers, Inc. (Texas board record and USAspending recipient record)Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip · As of 2026-10-04

Identifiers (UEI, state registrations)

• SAM UEI C7HVTLQZSWN4 (as shown on the USAspending recipient record) and Texas TBPELS firm no. 882.Source: usaspending.gov/recipient/95efdaf6-f6f0-44b7-0a… · As of 2026-10-06

Services and markets

• Environmental engineering firm specializing in the planning, design and construction of water and wastewater facilities.Source: carollo.com/about · As of 2026-10-06

Leaders

• B. Narayanan, President, CEO and Chairman of the Board.Source: carollo.com/about/board-of-directors · As of 2026-10-06
• Michelle Cannon, Executive Vice President, Managing Director of People.Source: carollo.com/about/board-of-directors · As of 2026-10-06
• Troy Hedlund, Executive Vice President, Managing Director of Internal Operations.Source: carollo.com/about/board-of-directors · As of 2026-10-06

Licences (board records)

• Texas TBPELS roster lists Carollo Engineers, Inc. (firm no. 882, type NS, expires 2028-01-31)Source: tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip · As of 2026-10-04

Federal awards (contracts)

• USAspending recipient record CAROLLO ENGINEERS INC (Walnut Creek, CA), contract award obligations: FY2021 $0, FY2022 $0, FY2023 $0, FY2024 $1,767,266, FY2025 $0 (award types A to D; obligations as published, including modifications and negative adjustments)Source: usaspending.gov/recipient/95efdaf6-f6f0-44b7-0a… · As of 2026-10-06

Public filings

• DOL Form 5500 filings, plan year beginning 2024-01-01, NAICS 541330: CAROLLO ENGINEERS, INC. 401(K) PROFIT SHARING PLAN (ACK_ID 20250924125436NAL0008682368001, 1,519 active participants)Source: dol.gov/agencies/ebsa/about-ebsa/our-ac… · As of 2025-09-24

Rankings and awards

• Listed in the ENR 2026 Top 500 Design Firms.Source: enr.com/toplists/2026-top-500-design-fi… · As of 2026-10-05

News timeline

• 2026-09-22: Tina Houston joined the firm's Atlanta office.Source: carollo.com/news/tina-houston · As of 2026-10-06

Sources of record

1. https://tbpedownloads.s3-us-west-2.amazonaws.com/roster_firm.zip
2. https://www.usaspending.gov/recipient/95efdaf6-f6f0-44b7-0a38-367d648e8fee-P/latest
3. https://www.enr.com/toplists/2026-top-500-design-firms-1
4. https://carollo.com/about/
5. https://carollo.com/
6. https://carollo.com/about/board-of-directors/
7. https://www.dol.gov/agencies/ebsa/about-ebsa/our-activities/public-disclosure/foia/form-5500-datasets
8. https://carollo.com/news/tina-houston/