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Senior IT Admin

Job in Miami, Miami-Dade County, Florida, 33222, USA
Listing for: XTec Incorporated
Full Time position
Listed on 2026-08-15
Job specializations:
  • IT/Tech
    Systems Administrator, Cybersecurity, Network Administrator, IT Support
Salary/Wage Range or Industry Benchmark: 110000 - 170000 USD Yearly USD 110000.00 170000.00 YEAR
Job Description & How to Apply Below

Senior Information Technology Administrator Summary of Position

The Senior IT Administrator is responsible for the design, administration, security, maintenance, and optimization of the organization s enterprise IT infrastructure, including servers, storage, networks, cloud services, operating systems, and end-user computing environments. This role ensures the availability, performance, integrity, and security of mission-critical systems while supporting business operations, strict federal regulatory requirements, and corporate security mitigation plans. The Senior IT Administrator also serves as a technical lead on infrastructure projects, provides advanced troubleshooting, and enforces strict access controls across all systems.

Location: Miami, FL (In-Office) with availability to travel as needed.
Security Clearance: Active U.S. Government Secret Security Clearance (Required).
Citizenship/Export Control: Must be a U.S. Person as defined by ITAR/EAR.

Core

Duties & Responsibilities
  • Infrastructure Management: Build, configure, deploy, and maintain corporate workstations, laptops, and physical/virtual server infrastructure.
  • Identity & Access Control: Administer directory services, group policies, and identity management systems in strict compliance with corporate Electronic Communications Plans (ECP).
  • Environment Administration: Manage enterprise storage solutions, centralized backup/restore processes, and hybrid environments consisting of on-premises and cloud-based systems.
  • Lifecycle & Performance: Install, configure, and maintain enterprise operating systems (Windows and Linux) and server-based applications (databases, file services, print services, web services).
  • Vulnerability & Patch Management: Direct centralized patch management, software updates, vendor patches, and vulnerability remediations.
  • Security & Auditing: Oversee endpoint protection and centralized security management. Monitor, manage, and protect system audit logs, error logs, and system alerts to ensure network integrity.
  • Network Operations: Administer local and wide-area networks (LAN, WAN, VPN, Wi-Fi) and core domain services (DHCP, DNS, NTP).
  • Project Leadership: Serve as technical lead on infrastructure design, review system requirements for new applications, and map interdependencies in accordance with Technology Control Plans (TCP).
  • Compliance Support: Develop and maintain technical documentation, network diagrams, and operational metrics. Support security audits and ensure software licensing compliance.
  • Affiliated Operations Compliance: Manage IT asset tracking and vendor relationships in strict accordance with the company s Affiliated Operations Plan (AOP), ensuring clear boundaries between cleared and uncleared environments.
  • User Support: Provide advanced escalations (Tier 2/3) to resolve end-user service requests.
Education & Experience Required
  • Education: Bachelor's degree in Information Technology, Computer Science, or a related field (or equivalent professional experience).
  • Professional Status: Must be a U.S. Person (U.S. Citizen or Lawful Permanent Resident) due to the handling of export-controlled technical data (ITAR/EAR).
  • Security Clearance: Must possess and maintain an active U.S. Government Secret security clearance.
  • Core

    Experience:

    Minimum 4 years’ experience administering enterprise-level server operating systems (Windows and Linux).
  • Technical Depth: Minimum 3 years’ experience managing enterprise storage network environments and virtual hypervisors.
  • Cloud & Network: Hands-on experience with secure cloud technologies (SaaS, IaaS), core enterprise networking components (VPN, IPSEC, firewalls), and common client applications.
  • Framework Familiarity: Experience working within regulated environments subject to federal security standards (e.g., NIST SP 800-171, CMMC, or FedRAMP).
Preferred Qualifications
  • Enterprise-level technical certifications (e.g., Microsoft, Linux, Virtualization, or Networking).
  • DoD 8570/8140 Baseline Certification (e.g., CompTIA Security+ or equivalent).
  • Prior experience as an IT Administrator for a defense contractor operating under DCSA FOCI mitigations.
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Position Requirements
10+ Years work experience
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