Cybersecurity Systems Administrator

Role: Cybersecurity Systems Administrator

Remote Role

JD:

Job Description

We are seeking a Mid-Level Systems Administrator/Engineer to take ownership of day-to-day infrastructure operations. In this role, you will partner with cross-functional teams to protect organizational data, systems, and IT assets from cyber threats by deploying, configuring, managing, and maintaining enterprise technologies and infrastructure. You will support business objectives by enabling process integration between enterprise applications and related platforms as needed. Additionally, you will serve as a technical liaison to internal stakeholders, providing support for enterprise tools and effectively communicating technical concepts to both business and technical audiences.

The ideal candidate is a self-motivated professional who can work independently, manage priorities effectively, communicate clearly, and maintain strong working relationships across teams. This position requires exceptional attention to detail, adherence to established processes, and thorough documentation of maintenance activities, deployments, and operational procedures.

Key Responsibilities

• Maintain enterprise IT infrastructure and cybersecurity tools and systems.
• Deploy, configure, administer, and maintain enterprise applications and supporting infrastructure.
• Perform general system administration, including renewing and updating TLS certificates and managing encryption protocols, key exchange mechanisms, MACs, and cipher configurations.
• Respond to audit findings, security hardening requests, and compliance initiatives.
• Update and manage work items, including tasks, user stories, and epics within project management tools.
• Troubleshoot Linux and Windows operating systems and related applications.
• Participate in on-call rotations and provide after-hours operational support as required.
• Deploy and maintain commercial off-the-shelf (COTS) cybersecurity solutions across on-premises, SaaS, and IaaS environments.
• Remediate security vulnerabilities on Windows and Linux systems through monitoring, patching, maintenance, and system administration.
• Develop and maintain engineering documentation, including procedures, tool documentation, lessons learned, and status reports.
• Participate in daily operational meetings and provide status updates.
• Monitor daily incident and service request queues, triage requests, and assign work as appropriate.
• Conduct quarterly user access reviews.
• Perform biweekly patch validation and verification activities.

Required Qualifications

• 3+ years of experience in a large enterprise environment with formal change management processes.
• 3+ years of experience as a Systems Administrator or in a similar infrastructure support role.
• 3+ years of cybersecurity engineering or related experience.
• Knowledge of enterprise security best practices and system hardening, including familiarity with standards such as PCI-DSS.
• Experience with infrastructure management processes, including change management, problem management, configuration management, and project management.
• Hands-on experience working within Agile environments, particularly Kanban workflows.
• Strong experience supporting enterprise IT infrastructure.
• Strong troubleshooting skills for Linux operating systems (CentOS, Red Hat, Ubuntu, Cisco-based Linux distributions) and/or Windows Server environments.
• Experience patching and upgrading Windows and Linux operating systems, software packages, and enterprise applications.
• Understanding of cybersecurity principles related to securing enterprise systems.
• Basic scripting experience using tools such as Ansible, Python, Bash, PowerShell, Ruby, or similar automation technologies.
• Experience integrating or supporting Security Information and Event Management (SIEM) technologies.
• Experience working within structured enterprise environments that require detailed ticketing, coordination, change management, and operational controls.
• Knowledge of networking fundamentals, including firewalls, routing, switching, load balancing, proxy technologies, and server-related troubleshooting.

Preferred Qualifications

• Experience with Ansible automation.
• Experience managing clustered Linux-based Java/Tomcat commercial web applications.
• Experience managing clustered Windows IIS/.NET commercial web applications.
• Experience administering physical or virtual appliances with Linux command-line interfaces.
• Ability to analyze and interpret network packet captures.
• Experience using Jira and Confluence.