Systems Admin

1 week ago Be among the first 25 applicants Position Title: Systems Administrator Location: Arlington, VA (100% Onsite) Clearance Requirements: Active TS/SCI (SCI-eligible candidates acceptable) Position Status: Contract to Hire (Long-term project with 3+ years remaining) Pay Rate: $65/hr - $75/hr. Position Description: We are seeking an experienced Systems Administrator to support a mission-critical program in Arlington, VA. This role is ideal for a high-performing IT professional with a strong background in Windows Server administration, Linux systems, virtualization (VMware), system optimization, patching, Citrix, PowerShell, and enterprise infrastructure support. The Systems Administrator will play a key role in ensuring secure, reliable, and high-performing systems across a classified environment. You will troubleshoot complex technical issues, drive system improvements, support 24/7 operational readiness, and contribute to ongoing modernization initiatives. This opportunity offers long-term stability, professional growth, and the chance to work on impactful DoD-focused projects. Responsibilities Optimize system operations, performance, and resource utilization in highly available environments. Perform system capacity analysis, planning, and performance tuning. Design, deploy, and manage virtualized environments using VMware. Install, configure, and maintain Windows Server and Linux operating systems. Apply system and security patches following DoD and internal security standards. Ensure continuous system functionality and monitoring within 24/7 operational requirements. Conduct routine preventive maintenance on hardware and software systems. Troubleshoot and resolve complex infrastructure, server, and network-related issues. Support and administer Citrix Virtual Apps and Desktops to maintain high performance and user experience. Manage enterprise tools including SCCM, DNS, DHCP, SAN, Group Policy, and PowerShell. Develop and maintain documentation, policies, and standard operating procedures. Perform daily administrative and operational tasks in alignment with compliance standards. Support additional mission-related tasks as needed. Required Skills/Education Minimum 5 years of hands‑on systems administration experience in enterprise or DoD environments. Proficiency with Windows Server, Linux administration, PowerShell scripting, VMware, and enterprise IT infrastructure. Experience with SCCM, OS deployment, DNS, SAN administration, GPO, DHCP, and Microsoft enterprise technologies. Demonstrated experience managing and optimizing Citrix environments. Strong diagnostic, analytical, and troubleshooting capabilities. Active DoD TS/SCI clearance (SCI‑eligible acceptable). DoD IAT Level II certification required upon hire, such as: CompTIA Security+ SSCP CCNA Security CySA+

GICSP

GSEC About Seneca Resources: At Seneca Resources, we are more than just a staffing and consulting firm — we are a trusted career partner. With offices across the U.S. and clients ranging from Fortune 500 companies to government organizations, we connect professionals to career-building opportunities that make an impact. When you work with Seneca, you're choosing a company that invests in your success, supports your professional growth, and celebrates your achievements. Our consultants and contractors enjoy competitive pay, comprehensive health, dental, and vision coverage, 401(k) plans, and the support of a dedicated team that advocates for you at every step. We are proud to be an Equal Opportunity Employer, committed to fostering an inclusive, diverse work environment where all qualified individuals are encouraged to apply. #J-18808-Ljbffr Seneca