Systems Administrator

Sealing Technologies, a Parsons Company, is looking to hire an experienced System Administrator to the team. In this role, you will be responsible for on-prem administration, automation, and security hardening of Windows and Linux environments. You will play a key role in maintaining system reliability, applying DoD security baselines, and enabling consistent, repeatable system deployments across the program. Note:This position is contingent upon award of an anticipated federal contract., * Administer Windows laptop and workstation environments including imaging, automation, provisioning, and lifecycle management.

• Administer Linux server environments including provisioning, automation, patch management, and configuration management.
• Apply, validate, and maintain DoD Security Technical Implementation Guides (STIGs) across Windows and Linux systems.
• Develop and maintain automated provisioning workflows using Ansible, PowerShell, or equivalent tools.
• Manage Active Directory, including user accounts, group policy, and authentication services.
• Perform patch management, vulnerability remediation, and security updates in accordance with DoD timelines.
• Maintain system backup, recovery, and continuity processes.
• Document system configurations, build procedures, and operational runbooks.
• Troubleshoot Tier 2/3 system, network, and authentication issues.
• Collaborate with engineering, security, and program teams to ensure systems meet mission requirements., MANTECH seeks a motivated, career and customer-oriented VoIP Systems Engineer to join our team in McLean, VA. In this role, you’ll combine expertise in telephony systems, Linux ser…
• 5 days ago +

• U.S. Citizenship.
• Bachelor’s degree in Information Technology, Computer Science, or related field; equivalent experience may be considered.
• 5+ years of hands-on system administration experience across Windows and Linux environments.
• Experience with automation and provisioning tools such as Ansible, PowerShell, or equivalent.
• Experience applying DoD STIGs and maintaining compliance baselines.
• Experience with Active Directory administration.
• Experience with patch management and vulnerability remediation.
• DoD 8570 IAT Level II certification (Security+ CE or equivalent), or ability to obtain within 6 months of hire.
• Strong troubleshooting, documentation, and communication skills.
• Must be able to lift, carry, and move packages weighing up to 50 lbs repeatedly throughout the workday to support delivery order fulfillment.

Preferred Qualifications:

• Active Secret clearance or ability to obtain one.
• Experience supporting DoD Defensive Cyberspace Operations (DCO) programs.
• Experience with virtualization (VMware, Hyper-V) and containerization (Docker, Kubernetes).
• Experience with infrastructure-as-code practices (Terraform, Packer).
• Experience with SIEM, EDR, or other endpoint security tooling.
• Familiarity with the Risk Management Framework (RMF).

Sealing Technologies is an equal opportunity employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, veteran status or any other protected status. Working is no longer solely about the job. Here at Sealing Tech, we understand your happiness and health is vital to our success. We are innovative in our approach to cultivating balanced work environments and offer a plethora of added perks. Sealing Tech offers competitive compensation packages, health, dental, and vision insurance, retirement contributions, continuing education budgets, tuition reimbursement, flexible schedules, and generous vacation policies. Other perks include complimentary snacks, drinks & monthly catered lunches, and company retreats and gatherings. Plus, flexible work arrangements, pet friendly offices and quarterly merit bonuses for qualified employees. We are looking for a new member to join our team, take on challenges, be innovative and willing to grow with us. BUILD, SECURE, SOLVE.

Sealing Technologies, a Parsons Corporation company, is a trusted partner in providing powerful edge computing hardware and defensive cybersecurity solutions to protect the Federal Government and private enterprises. Our goal is to support the federal government, our allies, mission partners, and private industries in accomplishing their cybersecurity and defense objectives efficiently and securely through cutting-edge hardware, engineering, and integration services.