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Carollo Engineers Tech Stack

Water and wastewater engineering design, planning, and construction

Environmental Services Walnut Creek, California 1,001–5,000 employees Founded 1933 Privately Held

Carollo Engineers is a 1,001–5,000-person environmental engineering firm founded in 1933 and headquartered in Walnut Creek, California, with an engineering-dominated workforce (226 of 249 active roles). The tech stack reveals a heavy reliance on domain-specific CAD, hydraulic modeling, and SCADA/PLC tools (AutoCAD Civil 3D, WaterGEMS, HEC-RAS, Ignition, GE iFIX) — typical of infrastructure design shops — with active GIS adoption signaling a shift toward asset management and spatial planning at scale.

Tech Stack 55 technologies

Core StackArcGIS AutoCAD Primavera P6 Procore Allen-Bradley Siemens Word Excel GIS Bentley AutoCAD Civil 3D PowerPoint WaterGEMS Outlook Microsoft Project CCTV HEC-RAS FLO-2D Civil 3D Microstation ArcMap Microsoft Office Schneider Electric Modbus Ethernet/IP Profibus Wonderware Ignition GE iFIX OPC+25 more

AdoptingGIS

What Carollo Engineers Is Building

◆Challenges

Budget and schedule constraints
Flood risk mitigation
Expanding local stormwater market
Improving asset management technology support
Improving design and construction execution
Improving operations and maintenance practices
Expanding private sector team nationally
Logistical and cost barriers
Stormwater conveyance
Meeting third-party verifications

▲Active Projects

Treatment plant projects
Major treatment plant expansions
Water treatment facilities
Asset management plan development
Designing plc scada networks for medium and large systems
Electrical, programming, instrumentation, and controls projects for water and wastewater facilities
Critical water reuse projects
Municipal water/wastewater treatment plants
Master planning and asset management projects
Detailed design of stormwater management facilities

Hiring Activity

Decelerating250 roles · 60 in 30d

Department

Engineering

226

Construction

7

Marketing

4

Ops

2

Support

2

Finance

1

HR

1

Research

1

Seniority

Senior

109

Mid

81

Intern

17

Junior

15

Lead

10

Manager

9

Principal

2

Staff

2

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About Carollo Engineers

Carollo Engineers provides planning, design, and construction management for municipal and private water and wastewater treatment facilities. The firm operates across treatment plant design, expansions, asset management planning, SCADA and electrical controls for large systems, water reuse projects, and stormwater management. Active projects span treatment plant expansions, asset management strategy, PLC/SCADA network design, and detailed stormwater facilities. The company is expanding its private-sector capabilities and addressing operational challenges including asset management technology, design execution quality, operations and maintenance practices, and flood risk mitigation.

HeadquartersWalnut Creek, California

Company Size1,001–5,000 employees

Founded1933

Hiring MarketsUnited States, Lebanon

Frequently Asked Questions

What software does Carollo Engineers use for water design?

Carollo uses domain-specific tools including AutoCAD Civil 3D, WaterGEMS, HEC-RAS, FLO-2D for hydraulic modeling, and GIS/ArcGIS for planning and asset mapping. SCADA platforms include Ignition, GE iFIX, and Allen-Bradley controls.