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Parsons Corporation Senior System Administrator in Aberdeen, Maryland

Minimum Clearance Required to Start:


Job Description:

Job Description:

Ready to use your expertise on a wide variety of difficult defense security assignments, applying analytical techniques as part of a team that tackles national defense challenges? Want to take your skills to the next level to work on tough projects that will make a huge impact? Parsons is now hiring fully qualified System Administrator, experienced in utilizing analysis methods and practices with a passion for providing systems support on a variety of highly complex tasks.

Parsons is a leader in the world of defense and cyber security. We need our administrators to be versatile, highly teachable and enthusiastic to tackle new challenges across a broad range of planning, analysis, modeling, simulation, integration, and execution functions. Working for Parsons will put your industry expertise to work and continue to propel your career forward as a Systems Administrator.


  • Responsible for installation, configuration, administration, support and maintenance of production, and research systems on the unclassified and classified networks. Duties include updating to new systems, re-configuring existing systems for new missions as well as support on current systems by tuning performance, allocating storage space, and implementing critical system and application patches.

  • Provide on-site daily operations support for current and future systems, backups and user account management on the unclassified and classified networks. Install and maintain software environment (COTS and/or custom software).

  • Perform infrastructure (security, software, and storage) installation, configuration, maintenance, and troubleshooting.

  • Recommend and participate in the discussions for technology upgrade/changes, and the required software and hardware requirements, advantages and impacts on the organization.


  • BS degree and 5+ years’ experience

  • IAT Level II baseline certification (Security+, CISSP, etc.)

  • OS Certification must have within 3 months of Start Date (RHCSA, Linux+, etc.)

  • Active DoD Secret security clearance or higher

  • Ability to obtain Top Secret SSBI.

Preferred/Desired Skills with at least two of the following:

  • BS degree in related field.

  • Experience with TFTP and DHCP for booting servers

  • Experience with SELinux and RPM package management

  • Experience with x86_64, ppc64le and aarch64 architectures

  • Experience with Windows Active Directory – Managing Group Policy, Managing Windows DNS, and Managing Windows DHCP

  • Experience with McAfee HBSS, installing modules, removing modules, developing policies, and policy enforcement.

  • Experience with scanning systems using ACAS, determining remediation requirements and follow-up with system owners.

  • Experience with Linux (Red Hat, Ubuntu, CentOS) Experience with automation tools such as Puppet or Ansible.

  • Experience reading and implementing STIG requirements on Windows and Linux. systems as well as peripheral systems (Network switches, COTS Applications)

  • Experience with iSCSI SANs, configuring LUNs, snapshots, and providing access to hosts.

  • Experience with container technology including Docker, Podman and Singularity

  • Experience with monitoring tools such as Prometheus/Gafana and Zabbix

  • Experience provisioning and managing user accounts and permissions across a variety of software applications and systems.

  • Ability to modify or create scripts Bash.

  • Ability to multi-task work as part of a dedicated team.

  • Excellent technical, communication (written & oral) and time management skills.

Must be able to obtain, maintain and/or currently possess a security clearance.

The position may require a COVID vaccination or an approved accommodation/exemption for a disability/medical condition or religious belief as required by federal, state, provincial or local mandates or customer requirements.

About Us

Parsons is a digitally enabled solutions provider focused on the defense, security, and infrastructure markets. With nearly 75 years of experience, Parsons is uniquely qualified to deliver cyber/converged security, technology-based intellectual property, and other innovative services to federal, regional, and local government agencies, as well as to private industrial customers worldwide.

Parsons is an equal opportunity, drug-free employer committed to diversity in the workplace. Minority/Female/Disabled/Protected Veteran/LGBTQ+.

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