IT/Network System Administrator

Responsibilities Design, deploy, and maintain LAN/WAN, wireless, VPN, and firewall infrastructure across Lynk office and lab locations Own network architecture decisions — segmentation, routing, VLANs, redundancy, and capacity planning as the company scales Administer and harden core infrastructure: Microsoft Entra ID (Azure AD), Conditional Access, DNS/DHCP, Office 365, and endpoint security (ESET, Microsoft Defender) at the systems-administration level Manage endpoint and device compliance through Microsoft Intune and MDM platforms (e.g., NinjaOne), including policy design, patch management, and fleet-wide enforcement Deploy, monitor, and maintain security posture via Microsoft Defender (Endpoint/365) — threat detection, alerting, and remediation Manage server infrastructure (physical and virtual), including provisioning, patching, backup, and lifecycle management Monitor network and infrastructure health; lead incident response and root-cause analysis for outages and performance issues Implement and maintain infrastructure security controls (firewalls, MFA, network segmentation, endpoint protection) in line with ITAR and export-control obligations Support Lynk's CMMC Level 2 compliance program — maintain endpoint compliance (patching, configuration baselines, encryption, access control) across the device fleet and evidence controls for audits Monitor and remediate endpoint compliance drift via Intune/NinjaOne and Microsoft Defender to keep the environment aligned with

NIST SP 800-171

control requirements Partner with security/compliance stakeholders on System Security Plans (SSPs), POA&Ms, and audit readiness for CMMC assessments Document network topology, infrastructure architecture, and disaster recovery/business continuity procedures Serve as a secondary/escalation point of contact for basic end-user technical issues (hardware, software, connectivity, account access) Provision and configure end-user hardware (laptops, peripherals) in line with security and compliance baselines Troubleshoot common Windows/macOS and Office 365 issues for staff as needed Support onboarding/offboarding from an infrastructure and access-management perspective (accounts, device enrollment, permissions) Requirements 4+ years of experience in network engineering, systems administration, or infrastructure management Hands-on experience designing and maintaining LAN/WAN, VPN, firewall, and wireless network infrastructure Strong Windows Server and macOS environment administration experience Experience managing Microsoft Entra ID (Azure AD), Conditional Access, and Office 365 at an administrative/architectural level Hands-on experience with Microsoft Intune for device/endpoint management and compliance policy Experience with MDM platforms such as NinjaOne, ManageEngine, or similar Experience deploying and managing Microsoft Defender (Endpoint/365) or comparable endpoint security/EDR tooling Understanding of network security fundamentals: firewalls, segmentation, and endpoint protection Familiarity with CMMC Level 2 / NIST SP 800-171 control requirements and experience maintaining endpoint compliance in a regulated environment Comfortable providing basic end-user technical support alongside infrastructure duties Strong documentation, troubleshooting, and incident-response skills Relevant certification preferred (e.g., CompTIA Network+/Security+, CCNA, Microsoft Certified: Intune/Endpoint Manager, or equivalent experience). Core Competencies Demonstrates expertise in network engineering and systems administration, with a strong focus on managing and securing LAN/WAN, VPN, and firewall infrastructures. Proficient in compliance with CMMC Level 2 and NIST SP 800-171 requirements, ensuring endpoint security and device management through Microsoft Intune and related tools. Highest-signal resume keywords Network Engineering Microsoft Entra ID (Azure AD) Microsoft Intune CMMC Level 2 Compliance Endpoint Security Management Hard Skills LAN/WAN Design VPN Configuration Firewall Management Windows Server Administration MacOS Administration Endpoint Compliance Management Network Segmentation Patch Management Incident Response Documentation Soft Skills Troubleshooting Technical Support Communication Collaboration Problem-Solving Certifications & Qualifications CompTIA Network+ CompTIA Security+ CCNA Microsoft Certified: Intune/Endpoint Manager Industry Keywords CMMC Level 2 NIST SP 800-171 ITAR Compliance Network Security Fundamentals Infrastructure Management Tools & Technologies Microsoft Defender ESET NinjaOne ManageEngine Office 365

DNS/DHCP

MFA Endpoint Protection Disaster Recovery Business Continuity #J-18808-Ljbffr Jobtailor