Careers at Cornerstone

Dedicated to building lifetime relationships with our clients and employees, Cornerstone offers a rewarding and challenging work environment that encourages innovation, a strong passion for our work, and recognition for individual contributions.

Cornerstone Environmental, A Tetra Tech Company, is an engineering consulting and field service firm dedicated to providing services to solid waste, commercial, industrial, and agricultural clients throughout the nation. 

At Cornerstone, our environmental professionals are more than simply employees – they are our biggest asset. We pride ourselves in having a flexible and enjoyable working environment that promotes a balance between work and personal life.

At Cornerstone, we know that our people make the company a great place to work as well as a successful and rapidly growing business. In return, Cornerstone management is committed to providing its people with opportunities for growth and advancement.

Take a look at the slideshow below, which highlights a few of our employees and company activities.

Over 20 years of working together and still smiling
Holiday Party in Middletown, NY
Quarterly Post Closure Inspection
Our AirHeads Bonding
Annual Cornerstone Golf Outing
Wisconsin Office Golf Outing
Joe Brennan and Paul Mutch (Middletown, NY office) sediment sampling in the Ramapo River (Harriman, NY) on July 23, 2014. Client: Nepera. Photo taken by Tim Roeper
Rob Holmes Presents to Students on Waste
Middletown Engineers Teach About Landfills on Earth Day
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In accordance with our Equal Employment Opportunity Policy, Cornerstone provides equal employment opportunities to all employees and applicants and complies with applicable state and local laws governing nondiscrimination in employment.