Critical Start
Critical Start

60 Critical Start Security Systems Administrator Jobs Hiring Near You

Required Skills & Qualifications 5+ years of experience in a Systems Administrator, Security Systems Administrator, or Infrastructure Operations role (data center or critical environment experience ...

Systems Administrator

Ogden, UT · On-site

$73K - $132K/yr

... critical role at Hill AFB Air Force Base. If you're a technical powerhouse with a passion for ... Active TS/SCI clearance (required to start). * Security+ certification to showcase your ...

Systems Administrator

Ogden, UT · On-site

$73K - $132K/yr

... critical role at Hill AFB Air Force Base. If you're a technical powerhouse with a passion for ... Active TS/SCI clearance (required to start). * Security+ certification to showcase your ...

Systems Administrator I/II/Sr

Bismarck, ND · On-site

$78K - $106K/yr

Two years' experience providing technical support for the hardware, operating system software, security systems and file structures for an IT infrastructure. Systems Administrator II: ($73,460 - $91 ...

Physical Security Systems Admin Location: Dallas, TX Onsite Work Requirements/Responsibilities: * System Admin - Video Management Systems (VMS), Physical Security/ Video Systems Monitoring and Video ...

This role ensures the availability, integrity, and sustainability of critical security systems ... Administer, support, and optimize Network Detection and Response (NDR) sensors * Maintain network ...

Systems Administrator

Arlington, VA · On-site

$70K - $110K/yr

Overview We are seeking a Systems Administrator to support the Cost Assessment Data Enterprise ... Configure and maintain compliance with our security policy * Salary Range: $70,000 - $110,000/Year ...

Showing results 21-40

Critical Start Jobs Information

System Admininistrator

Infotech Sourcing

Ashburn, VA • On-site

Full-time

Re-posted 23 days ago


Job description

Security System Administrator
Location: Ashburn, VA
Summary
The Security Systems Administrator is responsible for the day-to-day administration, maintenance, and support of our
global physical security systems and the infrastructure that runs them. This role blends hands-on ownership of
CCTV/VMS, Access Control, and Key Management platforms with core systems administration across Windows Server,
virtualization, networking, and storage.
You will work closely with Security Engineering/Security DevOps, local technicians, and facility stakeholders to keep
systems reliable, secure, and consistently deployed across data centers and edge sites. This is an operations-focused
role with strong technical depth, clear ownership, and high impact.
Key Responsibilities
Administer and support physical security platforms including video management/CCTV (Genetec, Avigilon), access control
(Lenel, Genetec), and key management (Traka).
Maintain and operate the supporting server infrastructure including Windows Server, services, patching, backups,
hardening, and health monitoring.
Perform Tier 2 troubleshooting for incidents impacting security platforms and infrastructure, including log review, root
cause isolation, and coordination of remediation.
Partner with local site technicians on break-fix execution, validating outcomes and restoring service quickly and safely.
Perform basic-to-intermediate network troubleshooting supporting security systems, including VLAN/IP troubleshooting,
routing/firewall dependency identification, and packet-level checks when needed.
Support virtualization operations where security systems are hosted, including VMware/vSphere (and exposure to
VMware Cloud Foundation where applicable).
Support storage operations that enable video retention and system performance, including SMB/NFS fundamentals,
capacity monitoring, and performance troubleshooting (PowerScale/OneFS or Pure Storage experience is a plus).
Execute routine maintenance and lifecycle work such as upgrades, firmware/software updates, certificate renewals (where
applicable), configuration standardization, and vulnerability remediation.
Maintain accurate documentation and operational artifacts including runbooks, diagrams, inventories, and incident/change
records.
Contribute to continuous improvement by identifying recurring issues and proposing fixes through standardization,
automation, or monitoring enhancements.
Provide guidance and support to internal partners (Security, Facilities, DC Operations) on platform capabilities, limitations,
and operational best practices.
Required Skills & Qualifications
5+ years of experience in a Systems Administrator, Security Systems Administrator, or Infrastructure Operations role (data
center or critical environment experience preferred).
Strong experience administering Windows Server environments, including troubleshooting, patching, service
management, and operational hardening.
Hands-on experience supporting physical security systems such as VMS/CCTV, access control, and/or key management
platforms (Genetec, Avigilon, Lenel, Traka preferred).
Solid troubleshooting ability across systems and infrastructure layers, including logs, services, connectivity, and
performance bottlenecks.
Working knowledge of networking fundamentals (IP addressing, VLANs, DNS, routing basics, firewall dependencies, and
troubleshooting workflows).
Strong operational discipline with documentation, change control, and incident response practices.
Strong communication and collaboration skills, especially in cross-functional environments.
Nice to Have
Virtualization experience with VMware vSphere; familiarity with VMware Cloud Foundation is a strong plus.
Storage platform familiarity, especially large-scale video retention and NAS concepts; Dell PowerScale/OneFS or Pure
Storage is a plus.
Scripting/automation experience (Ansible preferred; Python/Powershell also valuable) for operational tasks and
repeatability.
Familiarity with monitoring/alerting practices (health checks, metrics, dashboards, log-based troubleshooting).
Certifications such as Microsoft/VMware, Security+, Network+, or ITIL (helpful but not required).