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Endurance IT Services · 1 day ago

Senior Systems Administrator

Chesapeake, VA

Contract

Onsite

Senior Level

5+ years exp

Endurance IT Services provides Managed IT Services, Cybersecurity Solutions, and IT Consulting to help businesses stay secure and productive. We are seeking a Senior IT Systems Administrator to support and secure our IT infrastructure while collaborating closely with the Director of IT.

Consumer ElectronicsInformation TechnologyProfessional NetworkingProfessional ServicesSecurityVirtualization

Growth Opportunities

Responsibilities

Own the full vulnerability management lifecycle across Windows, Linux, and Mac environments. This includes operating vulnerability scans, prioritizing and remediating vulnerabilities, and submitting reports to the Director of IT

Administer and harden Active Directory in alignment with CIS benchmarks

Configure and maintain monitoring and alerting across Windows, Linux, VMWare, and Azure systems

Administer TrueNAS-based file storage systems

Perform Linux server orchestration, administration and updates

Support backup / data protection systems and contribute to business continuity/disaster recovery plans

Contribute to implementation and enforcement of a least-privilege access model across systems according to Zero Trust principles

Assist with secure data handling procedures, administer and configure reporting for file storage/sharing platforms such as Box and Google Drive

Share Endpoint Detection and Response administration duties

Support Microsoft 365 and Azure administration

Contribute to the upcoming migration from an on-premises mail system to Exchange Online

Participate in migrating from local Active Directory to a hybrid Entra/Azure AD environment

Apply working knowledge of networking principles to support Cisco switches and routers

Administer or assist with firewall configurations (Cisco Firepower preferred)

Assist with the company-wide Security Awareness Training program

Assist with supporting Cisco Call Manager telephony and Webex collaboration

Understand NIST 800-171 requirements and support implementation of security best practices; familiarity with CMMC is a plus

Participate in authoring IT policy documentation and technical procedures

Qualification

Linux administrationActive DirectoryVulnerability managementCloud migrationCisco networkingTrueNASMicrosoft 365System monitoringCommunication skillsTechnical documentation

Required

Bachelor's degree in IT, Networking, Security or related field along with 5–7 years of experience, or equivalent related experience in lieu of a degree, in IT systems administration in mid-sized environments

Proven ability to lead patching/remediation workflows independently

Experience with scanners such as OpenVAS or Nessus

Experience supporting Active Directory, Modern SSO and identity systems, Windows and Linux servers, and endpoint security systems

Understanding of Linux systems in support of patching, and troubleshooting

Understanding of TrueNAS and zfs-based file systems for NAS

Familiarity with M365, Azure, and hybrid cloud transition work

Competence in system monitoring and alerting tools (Nagios, CheckMK, or equivalents)

Experience supporting Cisco-based networks (routing/switching) and firewalls

Strong understanding of security fundamentals and practical application of NIST frameworks

Knowledge of industry regulations such as CMMC and experience with policy authoring

Solid communication skills and ability to write clear technical documentation