More jobs:
Systems Administrator
Job in
Reston, Fairfax County, Virginia, 20190, USA
Listed on 2026-10-27
Listing for:
The Bison Group
Full Time
position Listed on 2026-10-27
Job specializations:
-
IT/Tech
Cybersecurity, Systems Administrator
Job Description & How to Apply Below
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.
** 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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…
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