Enterprise security solutions for Fortune 500 and government infrastructure
Open Systems Technologies builds custom security infrastructure for large enterprises and government agencies, operating a mature engineering org with deep expertise in threat prevention, penetration testing, and secure system design. The tech stack—Splunk, Sentinel, CyberArk, Kafka, Kubernetes, and Oracle—reflects a focus on detection and remediation at scale. Current hiring velocity is accelerating, with security roles (13 open) outpacing engineering (10), a composition that tracks their active penetration testing and cyber threat prevention initiatives.
OST is a privately held security solutions firm founded in 1996, headquartered in Gainesville, Virginia, serving Fortune 500 companies and government entities. The company delivers software development, systems integration, and enterprise security services, with particular strength in identity and access management, threat detection, and secure network design. OST maintains PMI and CMMI certifications and operates across 51–200 employees, primarily based in the United States.
OST uses Splunk Enterprise Security, Microsoft Sentinel, CyberArk, Kafka, Kubernetes, Docker, Jenkins, Oracle Database, and Active Directory, with languages spanning Java, C++, Python, JavaScript, and Scala.
Active projects include cyber threat prevention programs, penetration testing initiatives, secure network and enclave environment design, software release verification, and automation of network infrastructure deployment.
Open Systems Technologies Corporation'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.