Sierra L. Koerkenmeier

Sierra L. Koerkenmeier serves as a key procurement specialist within the Telecommunications Division (HC1013) of the Defense Information Systems Agency, supporting the secure and resilient modernization of the Department of Defense’s global communications infrastructure. In her secondary role, she facilitates the acquisition of mission-critical wired telecommunications services, ensuring compliance with DoD standards for network reliability, encryption, and interoperability. Her responsibilities include managing the full lifecycle of contract actions—from requirement validation and market research to award execution and performance monitoring—focusing on high-capacity, secure data transport solutions that underpin military and federal operations. Koerkenmeier maintains consistent working relationships with a core group of prime contractors, including AT&T Technical Services Company, Inc., Aerospace & Commercial Technologies, LLC, Liberty Communications, Inc., AOC Connect LLC, and Norfolk Fiber, LLC. These partnerships center on the delivery of fiber-optic networks, secure virtual private networks, and carrier-grade telecom infrastructure. Her procurement approach emphasizes long-term vendor collaboration, technical alignment with DISA standards, and rigorous performance oversight to ensure service continuity and cybersecurity compliance across classified and unclassified networks. Her contracting activity reflects a strict preference for open competition, with 100% of awards issued under no set-aside classifications. This indicates a focus on technical capability and mission readiness over socioeconomic categorization, prioritizing proven performance and scalable infrastructure solutions over targeted small business set-asides. While small business participation is not formally incentivized in her portfolio, all vendors are evaluated on technical merit and operational readiness. Her procurement activity is exclusively concentrated in NAICS 517111 (Wired Telecommunications Carriers), reflecting deep specialization in terrestrial and backbone fiber networks, T-carrier systems, and secure transport services. She procures services critical to the deployment of DoD-wide communication architectures, including dark fiber leases, wavelength services, and managed network operations, demonstrating expertise in the technical and regulatory frameworks governing federal telecom procurement.