Keltek operates as a subsidiary of Nexterra, a company founded in 2011 with a focused mission to support commercial businesses and government agencies with network cabling and network technology needs. Initially established as a structured wiring contractor, Nexterra quickly gained a reputation for attention to detail and high-quality service, prompting clients to request additional offerings. This demand led to strategic expansion, evolving into a full-service information technology company serving the DC, Maryland, and Virginia areas.

In 2018, Keltek was established as a general contracting firm specializing in structured wiring and technology solutions for new construction projects. Today, Nexterra serves as the parent company, with all technology services operating under the Keltek brand – a unified, focused entity delivering comprehensive technology infrastructure solutions to federal agencies, defense contractors, educational institutions, non-profits, and commercial businesses.