Terraphase Engineering
Terraphase Engineering Inc. is an environmental consulting and engineering firm based in Oakland, California, founded in 2010. The company specializes in providing cost-effective solutions to complex environmental and engineering challenges. Their team includes engineers, geologists, and scientists who work together to help clients achieve their project goals through comprehensive environmental management. Terraphase offers a wide range of services organized into four core areas: Environmental Services, Water Resource Services, Compliance Support, and Site Engineering. Their expertise includes site characterization, groundwater modeling, regulatory support, civil design, and geotechnical engineering. The company also utilizes Geographic Information Systems (GIS) technology to enhance their services, providing tools for data management, visualization, and 3D modeling. With approximately 115 employees, Terraphase serves a diverse clientele, including private and public entities. The firm is committed to technical excellence, responsiveness, and community engagement, fostering meaningful connections through partnerships and local initiatives.
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Headcount trend
Terraphase Engineering went from 145 employees in Jul 2023 to 159 in Jun 2025. Jan to Jun 2025: 11 people joined, 5 left.
Headcount data through Jun 2025
Org structure
Headcount by department
Hiring now
See all jobsH-1B sponsorship
The department split adds up all the years listed above. FY2026 alone: 1 filings.
Funding
- Jul 2023 ยท $305K
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Terraphase Engineering FAQ
How many employees does Terraphase Engineering have?
Terraphase Engineering has about 159 employees, up 2.6% over the 3 months to Jun 2025.
Does Terraphase Engineering sponsor H1B visas?
Yes. Terraphase Engineering filed 1 H1B (LCA) application in FY2026, according to the latest U.S. Department of Labor disclosures. It was for a Engineering role.
What is Terraphase Engineering's revenue per employee?
Terraphase Engineering makes about $81K in revenue per employee, based on $12.93M annual revenue and 159 employees.
How much funding has Terraphase Engineering raised?
Terraphase Engineering has raised $305K in total funding.
Data from Company Prospectus, DOL LCA disclosures, WARN notices and 6figr salary profiles.