Sr. Network Technician

Job Summary

We are seeking an experienced, hands-on Senior Network Technician to support, maintain, secure, and enhance our enterprise network infrastructure. This position will play a critical role in strengthening our cybersecurity posture, modernizing network systems, and supporting the organization's efforts to meet Cybersecurity Maturity Model Certification (CMMC) requirements.

The ideal candidate will have extensive practical experience administering enterprise networks, firewalls, switches, and secure remote access solutions. This individual must be comfortable independently troubleshooting complex networking issues, implementing security controls, and executing infrastructure improvements in a fast-paced environment.

An immediate priority for this position will be supporting CMMC readiness through network security remediation, firewall administration, infrastructure upgrades, and deployment of secure network access solutions.

US Citizenship is required for this role, as only US citizens are authorized access to information for this role.

Essential Functions

Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

Network Security and CMMC Readiness

• Support implementation of technical security controls necessary to achieve and maintain CMMC compliance, particularly those aligned with NIST SP 800-171.
• Identify and remediate network vulnerabilities, configuration weaknesses, and security gaps.
• Administer enterprise firewall configurations, including access control policies, firewall rules, port restrictions, network segmentation, and traffic filtering.
• Monitor, analyze, and control network traffic to identify security risks, unauthorized connections, and performance issues.
• Implement network hardening measures, including disabling unnecessary services, blocking unauthorized ports, and restricting network access.
• Assist with developing and maintaining technical documentation, network diagrams, configuration baselines, and evidence supporting cybersecurity assessments.
• Support security assessments, vulnerability remediation activities, and corrective action plans.
• Work collaboratively with IT leadership, cybersecurity personnel, and external security partners to implement required security improvements.

Network Infrastructure Administration

• Install, configure, maintain, and troubleshoot enterprise networking equipment, including managed switches, routers, firewalls, and wireless infrastructure.
• Administer and maintain SonicWall firewalls, including firewall policies, VPN configurations, firmware updates, and security services.
• Plan and execute network switch upgrades, replacements, configuration changes, and firmware updates.
• Manage VLANs, routing, switching, TCP/IP addressing, DNS, DHCP, and related network services.
• Perform network performance monitoring, capacity planning, and troubleshooting to maintain reliable connectivity.
• Support network segmentation and access control across enterprise environments.
• Maintain current network configurations, equipment inventories, and infrastructure documentation.
• Coordinate planned network maintenance and upgrades while minimizing operational disruption.
• Secure Network Access and Application Deployment
• Support the implementation, deployment, and administration of Appgate secure access solutions.
• Assist in transitioning users and systems to secure, centrally managed access technologies.
• Configure and troubleshoot VPN, Zero Trust Network Access (ZTNA), and other secure connectivity solutions.
• Work with system administrators and end users to ensure successful deployment and adoption of new network security technologies.
• Troubleshoot connectivity, authentication, and access issues across network and security platforms.
• General IT Operations and Support
• Serve as a senior technical resource for network troubleshooting and escalation.
• Diagnose and resolve complex network connectivity, performance, and security issues.
• Support enterprise network upgrades, hardware refreshes, and infrastructure modernization projects.
  Coordinate with vendors, service providers, and external technical partners.
• Participate in change management procedures and maintain accurate records of network modifications.
  Support incident response, disaster recovery, and business continuity activities related to network infrastructure.
• Provide technical guidance and mentorship to junior
• IT personnel as needed.

Position Qualifications

In compliance with federal law, all persons hired will be required to verify identity and eligibility to work in the United States and to complete the required employment eligibility verification form upon hire.

Competency Statements

• Adaptability - Adapts to change, open to new ideas and responsibilities
• Communication - Ability to communicate thoughts clearly, both oral and written in an honest, open and timely manner
• Job Knowledge - Understands facets of job, aware of duties and responsibilities, keeps job knowledge current
• Technical Skill - Possesses the knowledge and skills needed to perform a job or role effectively
• Dependability - Meets deadlines, works independently or in a team environment, is accountable, maintains focus, good attendance record
• Quality - Strives to eliminate errors, accurate work is a priority, seeks opportunities to improve products
• Ethics - Honest, accountable, maintains confidentiality
  Initiative / Take Ownership - Takes action, seeks new opportunities, strives to see projects to completion, meaning own your job and see it through
• Customer Focus - Understands and can meet the needs in a customer-centric (Internal and External) environment and build strong relationships. Promotes a positive image of the company and strives to solve issues raised by customers.

Experience and Skills

• Minimum of 5 years of progressively responsible experience in network administration, network engineering, or enterprise network technical support.
• Demonstrated hands-on experience administering and configuring enterprise firewalls, preferably SonicWall.
• Strong working knowledge of TCP/IP, DNS, DHCP, VLANs, routing, switching, VPNs, and network security protocols.
• Experience implementing firewall rules, restricting network ports, monitoring traffic, and troubleshooting network security issues.
• Proven experience configuring, upgrading, and maintaining managed network switches.
• Experience with network monitoring, diagnostic, and troubleshooting tools.
• Knowledge of cybersecurity best practices, network hardening, and secure infrastructure administration.
• Ability to independently execute technical projects, troubleshoot complex issues, and prioritize urgent security-related activities.
• Strong documentation, communication, and problem-solving skills.

Preferred Qualifications

• Experience supporting CMMC readiness or compliance initiatives, particularly CMMC Level 2.
  Familiarity with NIST SP 800-171, NIST SP 800-53, and applicable cybersecurity controls.
• Experience working in environments subject to FedRAMP Moderate security requirements or supporting FedRAMP-authorized cloud services.
• Hands-on experience deploying or administering Appgate SDP or other Zero Trust Network Access solutions.
• Cloud Security
• Experience setting up SSO/MFA azure/AWS integrations
• Experience supporting organizations that handle Controlled Unclassified Information (CUI).
• Experience with Meraki
• Familiarity with Microsoft 365 GCC High or other government-regulated IT environments.
• Experience implementing network segmentation, intrusion detection/prevention, vulnerability remediation, and security monitoring.
• Relevant certifications such as CompTIA Network+, CompTIA Security+, Cisco CCNA, or equivalent networking/security credentials.
• Experience working with government contractors or organizations subject to federal cybersecurity requirements.
• Intune management/deployment.

Initial Priorities
During the initial months, the Senior Network Technician will focus on:

• Reviewing and strengthening existing firewall configurations, network access controls, and security rules.
• Identifying and restricting unnecessary open ports, services, and network access paths.
• Supporting network switch upgrades and security hardening.
• Assisting with the rollout, configuration, and troubleshooting of Appgate secure access technology.
• Addressing high-priority technical remediation items supporting CMMC readiness.
• Improving network visibility, documentation, monitoring, and operational security.

Education

• High school diploma or GED.

Preferred:

• Associate's or bachelor's degree in Information Technology, Computer Science, Cybersecurity, Network Engineering, or a related technical discipline.
• Relevant industry certifications, including:
  • CompTIA Network+ – Foundational networking knowledge.
  • CompTIA Security+ – Cybersecurity principles and security controls.
  • Cisco CCNA – Network configuration, routing, and switching.
  • SonicWall certifications (such as SNSA) – Firewall administration and security.
• Additional training or certifications in NIST SP 800-171, CMMC, Zero Trust Architecture, or network security.
• Experience or training involving FedRAMP Moderate environments, government-regulated systems, or Controlled Unclassified Information (CUI).

Antenna Research Associates, Inc. is an equal opportunity employer committed to a policy of non-discrimination and affirmative action. We do not discriminate based on race, color, religion, sex, national origin, disability, protected veteran status, or any other legally protected status