What departments does Tetra Tech have?

Tetra Tech has employees across 10 departments including Operations, Engineering, Information Technology, Business, Arts & Design.

What is the largest department at Tetra Tech?

The largest department at Tetra Tech is Arts & Design with 10 employees.

Where are Tetra Tech employees located globally?

Tetra Tech has employees across 7 continents and 136 countries including Liberia, Zimbabwe, South Africa, Ghana, Madagascar.

How has Tetra Tech's team size changed over time?

Tetra Tech's team has decreased from approximately 16K to 10K employees based on available data.

Tetra Tech Employee Directory

Q: Who are Tetra Tech's key employees and leadership?

Tetra Tech's key employees include: Ceo: J. M., Chief Executive Officer: A. C., Cto | Diretor Comercial: G. C., Chief Innovation And Sustainability Officer: L. S., Chief Marketing Officer: O. S..

Civil EngineeringCalifornia, United States10001+ Employees

Tetra Tech is a civil engineering consulting firm focused on water, environment, and sustainable infrastructure, providing engineering and advisory services for projects worldwide. The company is headquartered at 3475 East Foothill Boulevard, Pasadena, California 91107, United States. It reports a large global workforce of more than 10,000 employees. Recent news highlights engagements with Chelan PUD for a hydropower spillway modernization project, a master services agreement with the Port of Los Angeles, and a PipeUP collaboration with Yorkshire Water. The company maintains a website at tetratech.com.

Tetra Tech Global Highlights

North America
11K

United States Of America
8.9K
Canada
2.4K
Mexico
14
Guatemala
12
Haiti
7
El Salvador
3
Costa Rica
2
Dominican Republic
2
Honduras
1
Trinidad And Tobago
1
Panama
1

Europe
886

United Kingdom Of Great Britain And Northern Ireland
696
Ukraine
66
Germany
21
Ireland
13
France
11
Italy
9
Armenia
8
Bosnia And Herzegovina
8
Spain
7
Serbia
6
Moldova
6
Poland
6
Netherlands
5
Norway
3
Belgium
3
Croatia
2
Romania
2
Montenegro
2
Austria
2
Georgia
2
Greece
2
Bulgaria
1
Sweden
1
Estonia
1
Denmark
1
Albania
1
Azerbaijan
1

Asia
476

Afghanistan
91
Indonesia
73
India
72
Jordan
24
Pakistan
18
Cambodia
18
Philippines
17
Saudi Arabia
17
Lao People's Democratic Republic
16
Bangladesh
16
Viet Nam
14
Mongolia
12
Iraq
12
Thailand
12
Kazakhstan
12
United Arab Emirates
6
Sri Lanka
5
China
5
Kuwait
4
Malaysia
4
Uzbekistan
4
Israel
3
Turkey
3
Maldives
2
Tajikistan
2
Syrian Arab Republic
2
Japan
2
Timor-leste
1
Oman
1
Iran
1
Singapore
1
Yemen
1
Nepal
1
Lebanon
1
Kyrgyzstan
1
Qatar
1
Russian Federation
1

South America
436

Brazil
381
Colombia
38
Chile
6
Ecuador
5
Peru
2
Venezuela
1
Paraguay
1
Argentina
1
Guyana
1

Africa
248

Tanzania
22
South Africa
21
Ghana
18
Liberia
17
Ethiopia
17
Côte D'ivoire
16
Zimbabwe
15
Nigeria
15
Zambia
14
Mali
14
Egypt
13
Kenya
13
Uganda
8
Madagascar
5
Rwanda
5
South Sudan
5
Malawi
5
Tunisia
3
Mozambique
3
Benin
3
Cameroon
3
Sierra Leone
3
Libya
2
Senegal
1
Niger
1
Botswana
1
Djibouti
1
Guinea
1
Sudan
1
Central African Republic
1
Morocco
1

Oceania
207

Australia
152
Fiji
28
Papua New Guinea
9
New Zealand
8
Solomon Islands
3
Kiribati
3
Samoa
1
Tuvalu
1
Micronesia
1
Vanuatu
1

Tetra Tech's Leadership

J. M.
Ceo
Mobile Phone
Email
A. C.
Chief Executive Officer
Mobile Phone
Email
G. C.
Cto | Diretor Comercial
Mobile Phone
Email
L. S.
Chief Innovation And Sustainability Officer
Mobile Phone
Email
O. S.
Chief Marketing Officer
Mobile Phone
Email
D. M.
Chief Technical Officer
Mobile Phone
Email
C. H.
Chief Financial Officer
Mobile Phone
Email
M. S.
President, Asia Pacific Division
Mobile Phone
Email

Tetra Tech Employee Metrics

100%

50%

0%

2026

2025

Engineering
Program & Project Management
Research
Analytics
Consultant
Other
Arts & Design
Administrative
Biotechnology

Contact profiles from Tetra Tech

Name

Title

Contact Info

Location

Last Update

A. G.
Unit President
Mobile Phone
Email
United StatesTexas
Apr 13, 2026
J. B.
Operating Unit President
Mobile Phone
Email
United StatesVirginia
Apr 09, 2026
J. M.
Operating Unit President
Mobile Phone
Email
United StatesTexas
Mar 04, 2026
G. C.
Cto | Diretor Comercial
Mobile Phone
Email
BrazilSão Paulo
Apr 23, 2026
M. S.
President, Asia Pacific Division
Mobile Phone
Email
AustraliaVictoria
Apr 16, 2026
O. J.
President Federal It Division
Mobile Phone
Email
United StatesVirginia
Apr 17, 2026
J. T.
President, Government Services Group
Mobile Phone
Email
United StatesVirginia
Apr 15, 2026
B. P. S.
President - Tetra Tech Infrastructure Northeast (ine)
Mobile Phone
Email
United StatesMassachusetts
Apr 09, 2026
L. S.
Chief Innovation And Sustainability Officer
Mobile Phone
Email
United StatesTexas
Apr 16, 2026
A. D.
Executive Assistant To The President & Vice President
Mobile Phone
Email
United StatesGeorgia
Apr 14, 2026

Frequently Asked Questions

What is Tetra Tech known for?

Tetra Tech operates in the Civil Engineering industry. The company's main headquarters is located in 3475 East Foothill Boulevard Pasadena, California 91107 United States; you can contact the main corporate office by phone at

+1-626-351-****

. Explore Tetra Tech's company overview page for more information.

What is Tetra Tech's most common email format?

Tetra Tech employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more Tetra Tech email formats with LeadIQ.

How many employees does Tetra Tech have currently?

Tetra Tech has approximately 27K employees as of June 2026. These team members are located across 6 continents, including North AmericaEuropeAsia.

Who are Tetra Tech's key employees and leadership?

As of June 2026, Tetra Tech's key employees include:

Ceo: J. M.
Chief Executive Officer: A. C.
Cto | Diretor Comercial: G. C.
Chief Innovation And Sustainability Officer: L. S.
Chief Marketing Officer: O. S.

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Tetra Tech Employee Directory

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