Job description

Senior Systems Administrator III - Generalist 📍 Springfield, VA 📌 Full-Time | On-site | Immediate Hire Join Synertex and bring your expertise to a mission that matters. We're looking for a Senior Systems Administrator III - Generalist with a background in enterprise IT operations, server administration, and multi-platform environments to support critical national security initiatives. If you're passionate about maintaining secure, high-performance enterprise systems and thrive in a fast-paced, mission-driven role-this opportunity is for you. Responsibilities • Provide Operations & Maintenance (O&M) support, including installation, configuration, hardening, testing, sustainment, remediation, upgrades, and decommissioning of enterprise server-based solutions. • Support enterprise multi-platform environments (Microsoft, Linux/Unix, Citrix, etc.) across LAN, MAN, and WAN networks. • Manage and administer enterprise server solutions including Citrix, Esri, McAfee, Microsoft, Red Hat, ServiceNow, and SolarWinds. • Serve as an escalation tier for the Server O&M team, providing advanced troubleshooting and remediation. • Produce and maintain technical documentation such as as-built diagrams, performance/capacity plans, SOPs, workflows, and run books. Requirements • 7+ years of progressive experience providing O&M support for enterprise operating systems (Windows Server, RHEL, etc.), applications, and services (AD, Exchange, SharePoint, SQL, File Services, etc.). • 5+ years of hands-on experience managing Microsoft Active Directory Domain/Forest Functional Level 2008 R2 or higher (DFL/FFL), including Domain Controllers, LDAP/S, DNS, and DHCP. • 5+ years of experience operating in secure environments compliant with DISA SRGs/STIGs and U.S. Government IA/INFOSEC standards. • Strong knowledge of Microsoft enterprise applications and services (Exchange, IIS, SQL, SharePoint, DFS, PKI, KMS). • Familiarity with automation and scripting technologies (PowerShell, Bash, VBScript) for O&M tasks. • Meets Cyber IT/Cybersecurity Workforce (CSWF) System Administrator (451) Intermediate Level requirements per SECNAV M-5239.2. • Bachelor's degree from an accredited university OR one of the following certifications: • CompTIA Security+ CE • GIAC Security Essentials Certification (GSEC) • Systems Security Certified Practitioner (SSCP) • Active DoD TS/SCI clearance with ability to obtain and maintain a Polygraph. Desired Qualifications • Strongly desired: Microsoft Certified Solutions Associate (MCSA): Windows Server 2016 and GIAC GCWN. MCSE: Core Infrastructure is most desired. • Technical certifications in other enterprise OSs, applications, and technologies (Citrix, Cisco, Microsoft, Red Hat, Splunk, SolarWinds). • Experience with newer Microsoft enterprise technologies: Active Directory, Windows 10, Windows Server 2016, SQL Server 2016, IIS 10 (including Server Core). • Experience implementing and maintaining High-Availability (HA) Server technologies: NLB, WFC, Exchange DAGs, IIS ARR Web Farms, SQL Always-On Availability Groups. • Experience implementing, configuring, securing, and maintaining enterprise solutions aligned with vendor/industry INFOSEC standards, DISA SRG/STIG, IA compliance, cryptography (DARE, DIFE). • Experience remediating INFOSEC vulnerabilities: receiving notices, researching solutions, presenting to customer, and implementing fixes within required timelines. • Experience mentoring and providing On-the-Job Training (OJT) to junior staff. • Working knowledge/experience with Microsoft SCCM: endpoint baselining, inventory, patching, software metering across global WANs. Experience with SCCM Collections, Applications, Deployment Packages, and Update Groups is a plus. • Experience performing advanced troubleshooting to quickly assess, resolve, and restore systems while maintaining configuration integrity and INFOSEC posture. • Experience with Microsoft AD Certificate Services (ADCS) providing PKI for server, client, encryption, code signing, and digital certificates. • Experience with Microsoft Exchange in dispersed configurations (2010 or newer). • Experience with Microsoft SharePoint (MOSS) and Outlook Web Apps (OWA) for enterprise collaboration. • Broad working knowledge of the IT technology stack: physical, networking, storage, virtualization, servers, applications, and services. • Familiarity with Windows Server Update Services (WSUS) in air-gapped environments. • Familiarity with Microsoft DFS (DFS-N, DFS-R) for namespace and replication. • Familiarity with Microsoft Volume Activation Services (ADBA, KMS). • Familiarity with McAfee ePO, MOVE, and VSES for IA/INFOSEC endpoint protection. • Familiarity with the SolarWinds Orion platform (NPM, NTA, NCM, IPAM, UDT, NTM, DPA, SAM, etc.) for enterprise monitoring. • Experience providing O&M support in Virtual Desktop Infrastructure (VDI), ideally with Citrix Virtual Apps & Desktops. • Familiarity with networking fundamentals: routing/switching, TCP/IP, traffic analysis, packet capture, and flow analysis. Join a mission-driven team advancing enterprise IT and national defense capabilities. Apply today and become part of Synertex's legacy of innovation, leadership, and excellence.

Requirements