IT Systems Administrator; Levels

Position: IT Systems Administrator (Multiple Levels)
Responsibilities

Noblis ESI is seeking experienced IT Systems Administrators specializing in cloud services, responsible for applying technical/functional solutions to several projects, leveraging capabilities and sharing/seeking knowledge and information across the organization.

As part of a cross-functional team, the position will optimize and secure classified IT infrastructure(s) supporting customers operating within a Sensitive Compartmented Information Facility (SCIF), ensuring maximum availability, security, and performance for critical communication, deployment, and authentication platforms. The engineer delivers Tier II/III advanced engineering support and handles limited Tier I troubleshooting, escalations as needed, while supporting the maintenance of an active Authorization to Operate (ATO) by aligning all systems with Risk Management Framework (RMF) and ICD-503 compliance standards.

Responsibilities Include:

• Support the development and management of classified Commercial Cloud Services (C2S) infrastructures across several domains, seeking to implement efficiencies and maintain a high availability requirement.
• Provide 100% on-site management of secure server & desktop infrastructure within the classified space.
• Diagnose and resolve complex infrastructure, server, and network failures; handle specialized system outages and configuration changes (mostly in a cloud environment.
• Handle limited, escalated desktop or user issues.
• Implement, monitor, and enforce technical security controls mandated by NIST SP 800-53, RMF, and Intelligence Community Directive (ICD) 503.
• Administer and synchronize secure on-premises servers with classified cloud environments.
• Utilize Microsoft tools to enforce secure baselines, deploy hardened operating system images, and push mandatory security patches to multiple endpoints.
• Administer RSA authentication tools to enforce strict Multi-Factor Authentication (MFA) and secure, identity-vetted remote access.
• Configure and monitor continuous auditing systems (such as Splunk) to log and review user and system events for compliance verification.
• Ensure user needs are met and enhance customer experience. Assist with strategic plans for future technical management and configuration. Design and Implement system changes to maintain security and usability posture.
• Conduct routine system scans using mandated automated tools (e.g., Nessus, ACAS), analyze findings, and execute remediation actions.

Required Qualifications

• Active Top Secret/SCI clearance with Counterintelligence (CI) Polygraph.
• US Citizenship is required.
• Degree in Cybersecurity, Information Technology, Computer Science, OR equivalent technical experience.
• DoD 8570/8140 IAM/IAT Level II OR III certification (e.g., Security+, CISSP, CISM, or CASP+) is required.
• Experience administering ACAS, Nessus, or Splunk vulnerability and logging scanners.
• Deep operational knowledge of the Risk Management Framework (RMF) lifecycle and ICD-503 security accreditation procedures.
• Design, provision and maintain secure, resilient, and scalable C2S infrastructure using AWS Well-Architected Framework.
• Proven experience hardening systems utilizing DISA Security Technical Implementation Guides (STIGs) and Center for Internet Security (CIS) benchmarks.
• Advanced management of Active Directory (AD), specifically focused on secure Group Policy Objects (GPOs).
• Ability to identify, analyze, and resolve unexpected challenges efficiently and effectively.
• Travel up to 10% within US.
• Lift up to 30 lbs, walk, bend, drive.

Intermediate Level

• Bachelor's degree and 6 years of experience OR Master's degree and 4 years of experience OR Associate's degree and 8 years of experience OR HS diploma/GED and 10 years of experience.
• Compensation: $99,800 - $156,050

Senior Level

• Bachelor's degree and 12 years of experience OR Master's degree and 10 years of experience OR Associate's degree and 14 years of experience OR HS diploma/GED and 16 years of experience.
• Compensation: $120,700 - $228,400

Desired Qualifications

• AWS certification is preferred.
• Expanded knowledge of Networking functions, appliances, protocols and configurations (e.g. VLAN & firewall switch/router configurations, firmware updates).
• Working knowledge of networking protocols and configurations. Configure and manage complex C2S networking components, including VPC's, subnets, Route 53, transit gateways, and load balancers.
• Power Shell or Python experience to automate configuration baseline checks and patch verification.
• Working knowledge of…