Shimmick Corporation provides turnkey infrastructure solutions to the water, energy, climate resiliency, and transportation markets in the United States. It builds, expands, rehabilitates, and upgrades water and wastewater treatment infrastructure, including desalination plants, and applies treatment technologies such as ozonation, biological activated carbon, membrane filtration, reverse osmosis, chemical treatment, and oxidation. The company also constructs and upgrades dams, reservoirs, water conveyance and storage systems, flood control systems, pump stations, coastal protection, levees, and flood walls, and it builds light passenger rail, bus rapid transit, personal rapid transit, and autonomous transportation systems while supporting data center construction for critical infrastructure. It is involved in water supply, hydroelectric power generation, and flood control. Formerly known as SCCI National Holdings, Inc., it changed its name to Shimmick Corporation in September 2023, was founded in 1990, and is headquartered in Irvine, California.