×
Register Here to Apply for Jobs or Post Jobs. X

Systems Administrator

Job in Reston, Fairfax County, Virginia, 20190, USA
Listing for: The Bison Group
Full Time position
Listed on 2026-10-27
Job specializations:
  • IT/Tech
    Cybersecurity, Systems Administrator
Salary/Wage Range or Industry Benchmark: 65000 - 99000 USD Yearly USD 65000.00 99000.00 YEAR
Job Description & How to Apply Below
Job Title:

Systems Administrator (Mid–Senior Level)
Overview

We are seeking a
* Systems Administrator
* to support and maintain a modern, cloud-managed IT environment built around
* Windows laptops administered through Microsoft 365*. This role focuses on
* endpoint management, identity and access control, security monitoring, and compliance support
* in a regulated environment.

The ideal candidate has strong experience with
* Microsoft 365, Intune, and endpoint security*, is comfortable operating in a
* zero-trust, cloud-native model*, and produces clear, audit-ready documentation.
* Senior-level candidates
* will take a leading role in CMMC 2.0 compliance activities, while
* mid-level candidates
* should have foundational familiarity and the ability to grow into deeper compliance ownership.

* Key Responsibilities
** Endpoint & Device Management*
  • Administer and support
    * Windows 11 laptops
    * managed through Microsoft 365 and Microsoft Intune.
  • Configure and maintain Intune policies for device compliance, configuration profiles, security baselines, platform scripts, and update management.
  • Manage the full
    * device lifecycle*: provisioning, enrollment, maintenance, troubleshooting, and secure decommissioning.
  • Support secure remote workforce operations with cloud-managed endpoints.
* Microsoft 365 & Identity Administration*
  • Administer Microsoft 365 services including
    * Entra  (Azure AD), Exchange Online, Teams, SharePoint, and One Drive*.
  • Manage user identities, access controls, conditional access policies, and role‑based access.
  • Support
    * Cisco Duo
    * as a third‑party MFA provider integrated with external cloud services such as Entra.
* Security Operations & Monitoring*
  • Utilize
    * Microsoft Defender* (e.g., Defender for Endpoint) to monitor endpoint health, investigate alerts, and support remediation activities.
  • Leverage
    * Microsoft Purview
    * for data protection, sensitivity labeling, and compliance‑related controls.
  • Review logs and security signals in
    * Microsoft Sentinel*, escalating or coordinating response actions as appropriate.
  • Apply security best practices including least privilege, device hardening, and zero‑trust access principles.
* Network & Remote Access (Cloud‑Managed)*
  • Support secure network access using
    * SASE
    * for VPN and remote connectivity.
  • Coordinate with networking teams on
    * Fortinet firewalls, switches, and wireless infrastructure
    * as it relates to endpoint access and security controls.
  • Assist with access segmentation, secure connectivity policies, and network‑related incident response.
* Compliance & Documentation*
  • Create and maintain
    * clear, accurate technical documentation*, including system configurations, procedures, diagrams, and standard operating guides.
  • Support organizational
    * CMMC 2.0 (NIST 800‑171 Rev
    2)
    * compliance efforts, including control implementation, evidence gathering, and audit preparation (scope varies by seniority).
  • Ensure operational practices align with internal security policies and compliance requirements.
* Operations & Continuous Improvement*
  • Troubleshoot endpoint, identity, access, and security issues across the Microsoft 365 ecosystem.
  • Perform root‑cause analysis and implement preventative improvements.
  • Participate in system enhancements, security improvements, and process optimization initiatives.
  • Collaborate with IT support, security, and compliance stakeholders to ensure a stable and secure environment.
* Required Qualifications*
  • Experience supporting
    * Windows endpoints in a cloud‑managed, Microsoft 365–centric environment*.
  • Hands‑on administration of
    * Microsoft 365
    * services including Entra  Intune.
  • Practical experience with endpoint security and compliance tooling (e.g., defender and device compliance policies).
  • Strong technical documentation skills with attention to…
To View & Apply for jobs on this site that accept applications from your location or country, tap the button below to make a Search.
(If this job is in fact in your jurisdiction, then you may be using a Proxy or VPN to access this site, and to progress further, you should change your connectivity to another mobile device or PC).
 
 
 
Search for further Jobs Here:
(Try combinations for better Results! Or enter less keywords for broader Results)
Location
Increase/decrease your Search Radius (miles)
0
200
Filters
Education Level
Experience Level (years)
Posted in last:
Salary