Sigma Networks, LLC.

Sigma Networks is a managed IT and cybersecurity provider based in Flower Mound, Texas. We serve small and mid-sized businesses across Dallas-Fort Worth, and most of our clients work in regulated industries: healthcare, dental, legal and financial services.

In those businesses, an IT failure is more than downtime. It turns into an audit finding, a compliance problem, or a breach notice. We build managed IT around that. We cover proactive monitoring and help desk support, managed security (MSSP), backup and disaster recovery, network design, cloud services, VoIP, and HIPAA and regulatory compliance support.

Our founder, Charles Ambrosecchia, has more than 30 years in IT and telecom. He founded Sigma Networks in Stamford, Connecticut in 2006, then built SigmaVoIP to over 29,000 business customers before it was acquired. That background in large networks, data centers and VoIP shapes how we design and support every client environment, whether it’s a 5-person dental office or a multi-location firm.

We’re local, so when something needs hands on site, we’re there fast. Clients reach people who know their environment, not a call center reading a script.

Services: Managed IT, Cybersecurity/MSSP, Compliance Support, Backup & Disaster Recovery, Cloud Services, Network Design, Business VoIP, IT Procurement.

Service area: Flower Mound, Lewisville, Highland Village, Southlake, Grapevine, Coppell, Denton, Frisco, Fort Worth and the greater DFW area.