Systems and Security Administrator

Location: SCHAUMBURG, IL (HYBRID) · FULL-TIME

Keep a cybersecurity firm’s own technology secure, available, and running smoothly. This role combines hands-on administration across Microsoft 365, identity, endpoints, networks, servers, and security tools with the organization, documentation, and service mindset needed to support 50+ employees, while independently balancing support requests, maintenance, projects, and security incidents.

About HALOCK

HALOCK Security Labs is a full-service information security consulting firm in Schaumburg, Illinois. Since 1996, we have provided technical security expertise and strategic advisement across penetration testing, red teaming, malware defense, incident response, risk, and compliance.

The Role

At HALOCK, internal IT is not a back-office function. Our clients trust us to protect their environments, so the security, reliability, and responsiveness of our own systems directly reflect who we are. As our Systems and Security Administrator, you will work alongside experienced security consultants and business leaders in a high-trust environment where you are expected to own outcomes, surface risks early, and continuously improve how our technology is run and secured. Regular on-site presence is required to support office, network, and infrastructure systems.

What You’ll Do

  • Own the employee technology lifecycle, including onboarding, offboarding, account provisioning, access removal, endpoint setup, asset recovery, and inventory tracking
  • Administer Microsoft 365, including Exchange Online, SharePoint, OneDrive, Microsoft Entra ID, Microsoft Defender, MFA, Conditional Access, user and group administration, and license management
  • Manage Active Directory, Group Policy, role-based access control, and identity and access management to keep access appropriate and least-privileged
  • Monitor and maintain security technologies such as Sophos Endpoint and Firewalls, Proofpoint, Tenable/Nessus, Microsoft Defender, and Imperva; triage security alerts and drive vulnerability remediation and patching
  • Maintain network and infrastructure systems, including Cisco switches, wireless access points, VPNs, firewalls, internet service providers, VMware vCenter/ESXi, Windows servers, and colocation or datacenter services
  • Run backup, recovery, and disaster-recovery processes, including backup monitoring, failed-job remediation, restore testing, and recovery documentation
  • Support business and SaaS applications, office technology, conference-room equipment, printers, physical access systems, and video surveillance/NVR systems
  • Troubleshoot issues across endpoints, cloud services, email, identity, networks, servers, business applications, and security tools
  • Manage vendors and keep clear documentation of systems and procedures

What You Bring

  • 3–5 years of IT operations, systems administration, network administration, or cybersecurity support experience, preferably supporting a small-to-mid-sized organization of approximately 50 or more employees
  • Experience managing employee technology lifecycle activities, including onboarding, offboarding, account provisioning, access removal, endpoint setup, asset recovery, and inventory tracking
  • Strong hands-on Microsoft 365 administration experience, including Exchange Online, SharePoint, OneDrive, Microsoft Entra ID/Azure AD, Microsoft Defender, MFA, Conditional Access, user/group administration, and license management
  • Working knowledge of Active Directory, Group Policy, role-based access control, endpoint provisioning, and identity/access management
  • Experience supporting and monitoring cybersecurity technologies, including Sophos Endpoint and Firewalls, Proofpoint, Tenable/Nessus, Microsoft Defender, Imperva, vulnerability management, patching, backup/recovery, and security alert triage
  • Experience managing network and infrastructure systems, including Cisco switches, wireless access points, VPNs, firewalls, internet service providers, VMware/vCenter/ESXi, Windows servers, and colocation or datacenter services
  • Experience with backup, recovery, and disaster-recovery processes, including backup monitoring, failed-job remediation, restore testing, and recovery documentation
  • Ability to troubleshoot issues across endpoints, cloud services, email, identity, networks, firewalls, servers, business applications, and security tools
  • Strong organizational, documentation, communication, vendor-management, and customer-service skills, with the ability to prioritize support requests, maintenance, projects, and security incidents

Strong Pluses

  • Familiarity with business and SaaS applications such as RingCentral, Zoom, DocuSign, HubSpot, GitLab, Azure DevOps, GoDaddy DNS, WordPress/WPEngine, Zendesk, Great Plains, and secure file-transfer platforms
  • Experience supporting office technology, including printers, conference-room equipment, physical access systems, video surveillance/NVR systems, and IT asset inventory

Nice to Have

  • Relevant degree, technical training, or equivalent professional experience
  • Certifications such as Microsoft, CompTIA Security+/Network+, Cisco, VMware, Sophos, Tenable, or ITIL

What We Offer

  • Broad, hands-on ownership of a modern technology stack
  • Direct impact on the security posture of a cybersecurity firm
  • Experienced teammates and room to improve the systems and processes behind daily operations
  • Competitive compensation, including bonus potential
  • Health and dental coverage, 401(k), and long-term disability
  • Paid training and certifications, and conference attendance

Additional Information

  • HALOCK is an Equal Opportunity Employer committed to an inclusive environment for all employees
  • Full background checks are performed, with consent, on all successful candidates before employment offers can be extended
  • U.S. citizens and Green Card holders, EAD, and TN are encouraged to apply; we are unable to sponsor H-1B candidates at this time
  • No third parties, please. Only individuals need apply

Ready to apply? Send your resume and a brief note describing an IT environment you supported, a security alert or outage you investigated and resolved, and how you balanced day-to-day support requests with maintenance and project work.