Senior Systems Administrator

Overview

Senior Systems Administrator

GDIT has an immediate opening for a Systems Administrator to fill a Core Services position supporting the NNSA (National Nuclear Security Administration). The Systems Administrator is responsible for supporting core service functions covering Server, Storage End Point Security (ESS), E-discovery, Microsoft Endpoint Configuration Manager (MECM), Monitoring Tools, Storage, and VMware teams.

• Enterprise Authorization:
  Integrate Linux Systems into a primary Windows environment (workstations & servers) where authentication, authorization, and accounting actives are controlled by Active Directory with PKI certificates and Single Sign On.
• Enterprise Provisioning:
  Configure new Linux and Windows systems for customer use and ensuring that initial configurations meet the required enterprise baselines & controls (e.g., proper agents installed, proper configs, etc.)
• Integrate Linux and Windows systems with other enterprise tooling (e.g., ACAS, Splunk, Solar Winds, Backup systems, etc.).
• Ensure patches are maintained across a diverse Linux environment in a heavily automated manner, where possible.
• Ensure that already-provisioned Servers are kept in compliance with baseline requirements & ever-changing enterprise policy (e.g., equivalent to Group Policy in the Windows realm for ongoing compliance update).
• Provide technical support to the administration of enterprise Storage systems including Hyperflex, NAS and SAN platforms.
• Provide technical and administrative support to system backups, ensuring all backups are completing as scheduled and the system ins operating in an optimized manner.
• Develop an operating system lifecycle plan with integration of NNSA STIGs and other recommended security standards.
• Monitor all solutions integrated via a centralized alerting system.
• Certify log management and forwarding to a single repository.
• Serves as a technical expert for the development, implementation, management, and support of systems and networks. Plans and execute complex assignments, developing new methods and approaches in a wide variety of IT specialties.
• Maintains group policy, AD directory structure, and deployment of policies.
• Provides domain-level configuration, administration, operation, and support for the enterprise.
• Supports hardware and software management; uses, monitors, and manages a software license repository, across the enterprise, for recording and tracking software licensing/support agreements.
• Provides configuration management support in accordance with compliance and policies and procedures.
• Perform account management, e.g. establishing, activating, modifying, disabling, and removing accounts.
• Provide configuration management, implementation, and sustainment of compliance with applicable system security controls.
• Provide support to IT systems including day-to-day operations, monitoring and problem resolution for all the client/server/storage/network devices, mobile devices, etc.
• Optimize system operations and resource utilization, and perform system capacity analysis and planning.
• Provide in-depth experience in trouble-shooting IT systems.

• Bachelor’s degree in computer science, Information Technology, or a related field (or equivalent work experience) or Technical Training, Certifications, and 8+ years of experience.

• At least 5-7 years of experience as a Systems Administrator or similar role
• Strong experience with Linux and Windows-based systems administration.
• Knowledge of cloud platforms (AWS, Azure, Google Cloud).
• Experience with virtualization technologies (VMware, Hyper-V).
• Familiarity with containerization technologies like Docker and Kubernetes is a plus.
• Experience with system monitoring tools (e.g., Nagios, Zabbix, Solar Winds).
• Experience with Backup strategies and industry tools such as Commvault
• Knowledge of scripting languages (e.g., Power Shell) for automation tasks.
• Strong troubleshooting and problem-solving abilities.
• Solid understanding of networking protocols and concepts (DNS, DHCP, TCP/IP, VPN, etc.).
• Expert knowledge and experience in current Windows client server to include OS configuration, file sharing, DNS, DHCP, and Active Directory.
• Experience granting permissions, group policy, responding to trouble tickets
• Optimize system operations and resource utilization.
• Implement ongoing system security compliance measures including patches and updates.
• Knowledge and demonstrated experience and its implementation using VMware vSphere (vCenter/ESXi) and Horizon View (VDI Desktops).
• Practical experience in implementing and maintaining virtualization (VDI Desktops).
• Security Clearance Level: DOE Q or TS
• Random Drug Screening
• Required
  
  Skills and Abilities:
  
  Written and Oral Communication;
  Organization, Problem Solving, Communication, and Teamwork.
• Location:
  
  Washington DC, Germantown, MD, or Albuquerque, NM - 100% onsite with our customer
• US Citizenship Required

• Microsoft Windows Hybrid Administrator
• ITIL 4 Foundation…