System Administrator - Linux/Windows

Zachary Piper Solutions is seeking a Systems Administrator to support a company focused on delivering secure, mission‑critical communications solutions for federal government programs. This position is on-site at Annapolis Junction, MD. The Systems Administrator will manage, maintain, and optimize enterprise telephony and supporting infrastructure to ensure 24x7x365 availability in a high‑security environment. This role directly supports national security missions by ensuring reliable, high‑quality voice communications for critical operations.Responsibilities for the Systems Administrator include:Manage and support enterprise telephony systems, including hardware, software, peripherals, and call applications such as WFO/WFM, CMS, and call recording platformsInstall, configure, operate, monitor, and maintain enterprise infrastructure including Windows and Linux servers, IIS web servers, VMware environments, and telecom hardwareTroubleshoot and resolve issues related to telephony systems, server environments, network connectivity, and integrations with Active Directory, DNS, DHCP, and LDAPPerform system upgrades, migrations, patching, and preventive maintenance to maintain security, compliance, and high availabilityCollaborate with cross‑functional and security teams to remediate vulnerabilities, address audit findings, and meet compliance requirementsRequired Qualifications for the Systems Administrator include:7+ years of experience supporting telephony systems in a systems administrator or engineer roleExperience with Avaya telephony platforms, call recording solutions, workforce optimization/workforce management (WFO/WFM), VMware ESXi and vCenter, Windows Server, and Linux Server environmentsStrong networking knowledge (IPv4/IPv6, ports, protocols), certificate management, and Active Directory / Group Policy administrationAbility to support 24x7x365 systems, participate in a rotational on‑call schedule, and work onsite dailyActive Secret security clearance Compensation for the Systems Administrator include:Salary Range: $85,000-$90,000 depending on experienceFull Benefits Package: PTO, Paid Holidays, Medical, Dental, Vision, 401K, Tuition Reimbursement, Sick leave as required by lawKeywords: Systems Administrator, Telephony, Avaya, Call Recording, WFO, WFM, VMware, ESXi, vCenter, Windows Server, Linux Server, Active Directory, Secret Clearance, Onsite, Annapolis Junction, Federal Government, Voice Communications