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Systems Administrator (Network and Security)

Maania Consultancy Services
Full-time
On-site
Arlington, Virginia, United States
Network and Security

Position Responsibilities:

  • Administration and oversight of FortiGate firewall implementation including hardware, operating system, security settings, policy and policy objects
  • Management and maintenance of Apogee’s Juniper switch hardware and virtual chassis switch configuration 
  • Monitoring network performance to diagnose and resolve network faults
  • Coordination with project and partner teams to plan, create, configure and troubleshoot external connections to Apogee’s network
  • Administration of PBX VOIP server and system
  • Oversee SSL VPN configuration and troubleshooting of user client connection issues
  • Infrastructure and configuration support for program teams conducting experimental or novel research efforts, including requirements gathering, feasibility evaluation, risk and security assessment and implementation planning and collaboration
  • Management of DNS and DHCP servers
  • Support for security efforts in conjunction with NIST 800-171 and NIST 800-53 standards compliance, including:
  • Routine audits of systems and software, including log analysis
  • Patch, configuration, and update management
  • Periodic permissions and access assessment
  • Administration of Apogee’s OpenStack virtualization environment including troubleshooting VM deployment and uptime
  • Assist Systems Administration team in managing a blended Windows/Linux infrastructure environment, including:
  • System deployment - OS and permissions configuration and troubleshooting, application deployment, and security hardening
  • System maintenance – Upgrades, patching, user management
  • System support – Networking configuration issues, system performance and responsiveness, permissions or functionality issues resulting from security hardening 
  • System optimization - Monitor system performance and health to identify opportunities for performance improvement, implement system tuning
  • Automation - Scripting routine tasks using BASH, Python, Ansible, Kickstart, and PowerShell

Qualifications:

  • Bachelor’s Degree in Computer Science or related field or equivalent work experience
  • CompTIA Network+ certification or 5 years of in-depth, hands-on experience in network and security management in an enterprise IT environment 
  • Experience with multiple distributions of UNIX/Linux (Red Hat, CentOS, Ubuntu) at both a GUI and command line/shell level
  • Troubleshooting experience with services and protocols such as TCP/IP, DNS, FTP, SSH, SCP, SSL, HTTP/HTTPS
  • Attention to detail, ability to prioritize workload and respond quickly to critical issues
  • Self-motivated, enthusiastic, and proactive in seeking out opportunities for personal expertise and skill growth and team support


Preferred Qualifications:

  • Familiarity with FortiGate hardware and the FortiOS operating system as well as Juniper hardware and the Junos OS operating system
  • Experience with standardized security and compliance control systems, NIST 800-171 and NIST 800-53 experience
  • Scripting experience with Java, Python, Ansible, or PowerShell a plus
  • Experience configuring and maintaining Confluence, Jira, OpenStack, GitLab on Linux-based systems
  • Knowledge of Docker and related swarm-based technology
  • Use of DevOps or scripting tools to automate repeatable tasks (i.e., Ansible, GoCD or equivalent)
  • Active TS clearance