Senior System Administrator

Analytica is seeking a seasoned and adaptable Senior System Administrator to join our infrastructure team in supporting an innovative federal mission. In this role, you will provide high-level technical leadership, engineering expertise, and strategic vision to optimize, manage, and secure our enterprise hardware, software, and network ecosystems. Analytica offers competitive compensation with opportunities for bonuses, employer-paid health care, training and development funds, and 401k match. What You'll Do (Key Responsibilities) Administer, maintain, and troubleshoot enterprise Windows Server and Linux/Unix systems. Manage core infrastructure services including Active Directory, Group Policy, DHCP, DNS-related support, and endpoint/server configuration tools. Support virtualization environments, including VMware vSphere or similar platforms. Perform system patching, hardening, vulnerability remediation, and configuration management for EUDs and Servers. Develop and maintain scripts using PowerShell, Python, or similar languages to automate administrative tasks. Support server hardware lifecycle activities, including rack installation, blade/server replacement, component upgrades, disk replacement, RAM upgrades, PCIe card installation, and related maintenance. Troubleshoot infrastructure issues across servers, storage, networking, applications, and authentication services. Provide escalated end-user support for complex issues, serving as the next level of support for Junior System Administrators / support staff. Use ServiceNow or similar ITSM/ticketing platforms to track incidents, requests, changes, and problem resolution. Coordinate with network, cybersecurity, engineering, and service desk teams to support infrastructure changes, incident response, and steady-state operations. Maintain accurate system documentation, standard operating procedures, diagrams, and operational runbooks. All other duties as assigned. Required Skills & Experience Education & Career History Bachelor’s degree in Computer Science, Information Technology, or a related field plus at least 3 years of dedicated System Administration experience. OR 7+ years of progressive, hands‑on experience in enterprise systems administration. Security Clearance Active secret security clearance Windows Server & Directory Services Proficiency in administering Windows Server, Active Directory, Group Policy (GPO), DHCP scopes, and MECM/SCCM collections and deployments. Virtualization Experience working with virtualization platforms, particularly VMware vSphere. Scripting & Automation Proficiency in PowerShell or Python for task automation and systems management. Linux / Unix Experience configuring and managing RHEL, Ubuntu, or other Linux/Unix systems. Networking Knowledge Basic knowledge of IP networking concepts including switching, routing, subnetting, and Ports, Protocols & Service Management (PPSM). Security & Compliance Experience supporting Risk Management Framework (RMF) activities including IAVM management, patch management, and STIG hardening across various systems. Hardware Hands‑on experience with server hardware including rack mounting, blade server installation, and component‑level maintenance (PCIe cards, RAM, drives, etc.). Service Management Experience using ServiceNow or a comparable ITSM ticketing platform. Preferred Qualifications Familiarity with container technologies such as Docker, or container orchestration platforms such as Kubernetes, VMware Tanzu, or Rancher. Experience writing Splunk queries (SPL). Experience administering IIS web servers and/or SQL Server. Experience with enterprise storage platforms such as NetApp ONTAP or Dell EMC OneFS. Experience with identity and authentication technologies including SSO, SAML, ADFS, or Okta. Equal Employment Opportunity Statement Analytica LLC is an Equal Opportunity Employer. We are committed to providing equal employment opportunities to all individuals, regardless of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, or any other characteristic protected by applicable federal, state, or local law. As a federal contractor, we comply with the Vietnam Era Veterans' Readjustment Assistance Act (VEVRAA) and take affirmative action to employ and advance in employment qualified protected veterans. We ensure that all employment decisions are based on merit, qualifications, and business needs. We prohibit discrimination and harassment of any kind. Analytica LLC also provides reasonable accommodations to applicants and employees with disabilities, in accordance with applicable law. #J-18808-Ljbffr