How many employees work at Tetra Tech Coffey?

Tetra Tech Coffey Pty Ltd. has 4,424 employees, according to Revelio Labs workforce intelligence data. The YoY growth rate is -12.8%.

Data source: Revelio Labs Coverage: Global workforce Latest update: September 2025

About Tetra Tech Coffey

Tetra Tech Coffey is part of Tetra Tech, a leading provider of consulting and engineering services worldwide. Our specialists are at the forefront of their field in engineering, geotechnical, occupational hygiene, environmental, and project management services. Across Australia and New Zealand, our operations include over 650 employees located throughout the Pacific. In our region, together we work alongside Tetra Tech Proteus, Eco Logical Australia, and Norman Disney & Young, who bring long-established successes delivering practical and sustainable services for our clients. Our local, national, and international operations work alongside clients to develop their strategies and provide the services they need to take plans forward. From single projects to large-scale programs of work, we deliver against objectives and are adept at working in complicated or highly regulated environments. We have an excellent breadth and depth of expertise across our teams and can call upon our global colleagues to foster industry-leading approaches. However, we always maintain a personal approach to our client relationships to really under-stand where we can add value to them.

As of September 2025

Tetra Tech Coffey
workforce metrics

Headcount

4.4k

Avg. Salary

$50.6k

Tenure

4.2yr

Growth Rate

-12.8%

Hiring Rate

Attrition Rate

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Employee Headcount

Interactive chart of Tetra Tech Coffey annual worldwide employee count from 2023 to 2025.

  • Tetra Tech Coffey total number of employees in 2025 was 4,402.529, a 12.8% decline from 2024.
  • Tetra Tech Coffey total number of employees in 2024 was 4,964.673, a 0.6% increase from 2023.
  • Tetra Tech Coffey total number of employees in 2023 was 4,934.838, a 2.0% increase from 2022.

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Employee Geographic Breakdown

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Employee Role Breakdown

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Employee Compensation

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Active Job Postings

Interactive chart of Tetra Tech Coffey annual active job postings from 2023 to 2025.

  • Tetra Tech Coffey active job postings in 2025 was 160, a 96.3% increase from 2024.
  • Tetra Tech Coffey active job postings in 2024 was 69, a 48.6% increase from 2023.
  • Tetra Tech Coffey active job postings in 2023 was 42, a 77.4% decline from 2022.

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Employee Sentiment

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