Cybersecurity Engineer

This remote, direct-hire Cybersecurity Engineer role at System One focuses on securing enterprise infrastructure, threat response, and Microsoft 365 security with regulatory compliance responsibilities. Based in Atlanta, GA, this position offers the flexibility of remote work and a full benefits package.

Responsibilities

• Secure enterprise infrastructure across cloud and on-premises environments.
• Respond to cyber threats and manage security incidents.
• Administer Microsoft 365 security, including Microsoft Defender, Entra ID (Azure AD), Conditional Access, Intune, Purview, and Exchange Online Protection.
• Implement and maintain enterprise security controls across cloud and on-prems environments.
• Manage security compliance and assist in security policy creation.
• Monitor and respond to security alerts, incidents, phishing attempts, malware, and suspicious activity.
• Perform vulnerability assessments, remediation tracking, and security hardening.
• Manage endpoint protection systems, email security, MFA, Conditional Access, and identity security controls.
• Configure and maintain SIEM, logging, and monitoring platforms.
• Conduct threat hunting and proactive security reviews.
• Implement DLP, retention, and email security policies.
• Secure remote access, mobile devices, and hybrid cloud infrastructure.
• Secure firewalls, VPNs, wireless networks, switches, and servers.
• Review firewall rules and network segmentation.
• Support backup, disaster recovery, and business continuity initiatives.
• Assist with patch management and secure configuration baselines.
• Provide escalation support for security-related help desk issues.
• Lead response efforts during security incidents and outages.
• Conduct user security awareness training and phishing simulations.

Requirements

• Must-have domain experience: ideally HUD or similar state or municipal housing programs, or civilian US federal agencies outside defense, intelligence, and national security sectors, or experience in highly regulated industries such as insurance, banking, or healthcare.
• Experience implementing security controls and solutions from scratch, with a working knowledge of security best practices and the ability to determine what to implement and how to execute it effectively.
• At least 5+ years of hands-on IT security / cybersecurity engineering experience.
• Strong experience with Microsoft 365 security technologies specifically.
• Experience with Firewalls and VPN technologies, Endpoint Detection & Response (EDR), Email security platforms, Vulnerability management tools, Windows Server and Hybrid Active Directory, and knowledge of cybersecurity frameworks and compliance standards.

Technologies

• Microsoft Defender
• Entra ID (Azure AD)
• Conditional Access
• Intune
• Purview
• Exchange Online Protection
• Microsoft 365 security technologies
• SIEM
• Endpoint Detection & Response (EDR)
• Windows Server
• Hybrid Active Directory

Benefits

• Full benefits