For the third consecutive year, Olsson is ranked as one of America's top 10 data center engineering firms.

We check in at No. 7 on Building Design+ Construction’s 2025 list of the country's largest data center engineering firms.

"Simply put, we're built to be a lasting partner."

Our annual data center revenue grew more than 65 percent since last year to $103M.

The Building Design + Construction rankings are based on revenue from data center design services performed during the previous calendar year. 

Olsson first entered the top 10 at No. 10 in 2023.

“This top 10 ranking is a testament to our dedicated employees, amazing partners, and solid strategy,” said Market Leader Patrick McFarlin.

“We've been at the forefront of shifts in technology and our consistent spot among the nation's top firms is a reflection of that commitment to excellence. Simply put, we're built to be a lasting partner." 

Olsson partners with clients to design and evolve their hyperscale, colocation, and enterprise data centers.

We offer a complete suite of capabilities not typically found in the architecture/engineering industry and we're committed to helping clients during the entire life cycle of a data center.

This commitment runs from full-service design — including civil, structural, mechanical, electrical, and geotechnical engineering — to construction support, closeout, and operations and continues through expansions and upgrades.