R3 LLC is a Frederick, Maryland managed IT and security provider whose stack is built almost entirely on Microsoft cloud security: Entra, Intune, Defender for Endpoint and Cloud, Azure Sentinel and Kusto Query Language point to a SOC-style monitoring practice. Unanet and Deltek in the back office suggest government-contracting workflows, consistent with its CMMC focus, while job posts center on endpoint fleet management and internal automation.
R3 LLC is a privately held IT services firm founded in 2007 and headquartered in Frederick, Maryland, with 51–200 employees. It delivers managed IT, cybersecurity, and governance, risk and compliance support to enterprise clients in sectors such as legal, financial services, healthcare and construction. Services include network support, help desk, cloud services, disaster recovery, data center operations, staff augmentation and IT consulting. The firm is a Microsoft Solution Partner and supports CMMC compliance work.
R3 runs on Microsoft cloud and security tooling, including Azure, Entra, Intune, Microsoft Defender, Azure Sentinel and Power Automate, plus ConnectWise Automate, Cisco Meraki, Mimecast, Unanet and Deltek.
R3 LLC is headquartered in Frederick, Maryland, and currently hires only in the United States.
Yes, hiring is accelerating, with openings spread across engineering, HR and support at junior, mid and lead levels, all based in the United States.
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R3 LLC's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →
This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.
