Day & Zimmermann

About Day & Zimmermann

When you’ve been around for more than a century, you know a thing or two! At Day & Zimmermann, we take our lifetime of experience and make things better! Our 43,000+ employees help bring big ideas to life every day. We’re pushing the boundaries of innovation in construction & engineering, operations & maintenance, staffing, and security & defense. And that’s not all. Did we mention that we have 150+ worldwide locations with $2.6 billion USD in annual revenue? Come join our on purpose – We put people to work, we protect American freedoms, and we help our customers power and improve the world. We do what we say.