Tier III Network Engineer

Job Title: Tier III Network Engineer

Location: Peachtree City, GA 30269

Duration: Full Time

Clearance: Active Secret

Certification Required: CCNA/CCNP and CompTIA Security+

Position Summary:

• The Network Engineer is responsible for the design, implementation, operation, and sustainment of enterprise network infrastructure supporting Department of War (DoW) operations.
• This position provides Tier II and Tier III support for network services, ensuring the availability, security, and performance of Local Area Networks (LAN), Wide Area Networks (WAN), Wireless Local Area Networks (WLAN), SD-WAN architectures, Direct Internet Access (DIA) services, and telecommunications infrastructure.
• The successful candidate will serve as a technical lead for network engineering initiatives, provide advanced troubleshooting and root cause analysis, coordinate with telecommunications vendors and service providers, and support cybersecurity compliance requirements across multiple geographically dispersed locations.

Role and Responsibilities:

Network Engineering and Operations:

• Design, implement, configure, and maintain enterprise network infrastructure utilizing Cisco and Aruba networking technologies.
• Engineer and support LAN, WAN, WLAN, VPN, MPLS, SD-WAN, and DIA environments.
• Configure and administer Cisco routers, switches, wireless infrastructure, and security solutions.
• Configure and administer Aruba CX switching, Aruba wireless solutions, Aruba Central, AirWave, and ClearPass environments.
• Develop network architectures, implementation plans, and engineering designs for infrastructure modernization efforts.
• Conduct network performance analysis and optimization to ensure maximum availability and reliability.
• Perform upgrades, migrations, technology refreshes, and lifecycle replacements of network hardware and software.
• Maintain network diagrams, configuration baselines, and technical documentation.

Direct Internet Access (DIA) and WAN Management:

• Design, deploy, and support Direct Internet Access (DIA) circuits and enterprise internet connectivity solutions.
• Manage carrier-provided Ethernet, fiber, and MPLS services.
• Coordinate circuit installations, testing, troubleshooting, and service activations with telecommunications vendors.
• Monitor bandwidth utilization, latency, throughput, and service availability.
• Support hybrid WAN and SD-WAN internet breakout architectures.
• Troubleshoot BGP routing, ISP connectivity issues, and provider-related outages.
• Conduct failover testing and continuity-of-operations validation for critical network services.

Incident Response and Troubleshooting:

• Serve as Tier II and Tier III escalation support for complex network-related incidents.
• Diagnose and resolve routing, switching, wireless, authentication, and connectivity problems.
• Perform root cause analysis and provide corrective action recommendations.
• Support major incident response activities and service restoration efforts.
• Coordinate with service desk, cybersecurity personnel, field technicians, and leadership during service interruptions.
• Participate in after-action reviews and problem management processes.

Cybersecurity and Compliance:

• Ensure network infrastructure complies with DoW cybersecurity requirements and organizational security policies.
• Implement and maintain Security Technical Implementation Guides (STIGs).
• Support Risk Management Framework (RMF) compliance activities.
• Coordinate remediation of Information Assurance Vulnerability Management (IAVM) requirements.
• Partner with cybersecurity teams to resolve security findings and vulnerabilities.
• Support secure network architectures and access control implementations.

Vendor and Telecommunications Management:

• Act as the technical interface with telecommunications providers, contractors, and external support organizations.
• Coordinate with vendors including Lumen, AT&T, Verizon, Comcast Business, and other service providers.
• Manage circuit provisioning, outage escalations, service requests, and performance reporting.
• Validate service level agreement (SLA) compliance and coordinate corrective actions when necessary.
• Support procurement planning and infrastructure expansion activities.

Required Qualifications:

• Bachelor’s degree in information technologies, Computer Science, Network Engineering, or a related field.
• Relevant military training or equivalent work experience may substitute for formal education.

Required Experience:

• Five (5) or more years of enterprise network engineering experience.
• Experience supporting Cisco and Aruba network infrastructures.
• Experience supporting WAN, MPLS, SD-WAN, and Direct Internet Access (DIA) environments.
• Experience troubleshooting complex network issues in large enterprise environments.
• Experience with vendor circuit management and telecommunications coordination.
• Experience supporting highly available and mission-critical networks.
• Experience supporting DoW, Federal Government, or other regulated environments preferred.

Security Clearance:

• Active Secret Security Clearance required.
• Ability to maintain clearance throughout employment.

Certification Requirements:

• DoW 8570/8140 IAT Level II Certification (Security+ CE or equivalent)
• Cisco Certified Network Associate (CCNA)

Technical Skills:

• Cisco Catalyst and Nexus Switching Platforms
• Cisco Integrated Services Routers (ISR)
• Cisco Aggregation Services Routers (ASR)
• Cisco IOS, IOS-XE, and NX-OS
• Cisco SD-WAN
• Cisco Identity Services Engine (ISE)
• Cisco DNA Center
• Routing Protocols: OSPF, EIGRP, and BGP
• VLANs, STP, QoS, ACLs, NAT, and VPN Technologies

Aruba Technologies:

• Aruba CX Switching
• Aruba Wireless Access Points
• Aruba Mobility Controllers
• Aruba Central
• Aruba AirWave
• Aruba ClearPass
• 802.1X Authentication
• Network Access Control (NAC)

WAN and DIA Technologies:

• Direct Internet Access (DIA)
• MPLS Networks
• SD-WAN Architectures
• Internet Breakout Design
• Carrier Ethernet Services
• ISP Circuit Management
• Redundant Connectivity Solutions
• Disaster Recovery and High Availability Networking

Security Technologies:

• Network Access Control
• Multifactor Authentication
• Secure Remote Access Solutions
• Firewall Policy Management
• STIG Implementation
• RMF Compliance
• IAVM Remediation

Preferred Certifications:

• Cisco Certified Network Associate (CCNA)
• Cisco Certified Network Professional (CCNP)
• Aruba Certified Switching Associate (ACSA)
• Aruba Certified Mobility Associate (ACMA)
• CySA+
• CASP+
• ITIL Foundation

Desired Competencies:

• Strong analytical and troubleshooting skills.
• Ability to work independently with minimal supervision.
• Excellent verbal and written communication abilities.
• Strong customer service and stakeholder engagement skills.
• Experience leading technical projects and network modernization efforts.
• Ability to manage multiple priorities in a fast-paced operational environment.
• Experience briefing technical and non-technical leadership personnel.

Physical Requirements:

• Ability to install and maintain network equipment in communications closets and data centers.
• Ability to lift up to 40 pounds.
• Occasional travel to supported locations may be required.

Preferred Environment Experience:

• Candidates with experience supporting DoWEA, Army Enterprise Networks, Department of Defense educational institutions, NIPRNet environments, SD-WAN migrations, Direct Internet Access deployments, Cisco ISE implementations, Aruba ClearPass integrations, and telecommunications vendor management are highly desired.
• This position serves as a critical member of the enterprise infrastructure team responsible for ensuring secure, reliable, and mission-ready network services for DoW operations.

About our Company: -

22nd Century Technologies, Inc., is one of the fastest growing IT Service Integrator and Workforce Solution companies in the United States. Founded in 1997, 22nd Century Technologies is a Certified National Minority Business Enterprise with 6,000+ people including 600+ Cyber SMEs nationwide supporting our customers in all 50 states, Canada, and Mexico. With HQs in Somerset, NJ and Mclean, VA, 22nd Century has 14 offices throughout the United States. As part of our unrelenting focus on quality and compliance, 22nd Century Technologies delivery is based on Certified Matured Processes including CMMI L3 Dev & SVC, ISO 20000, ISO 27001, and ISO 9001 quality processes. With a strong focus on the public sector, 22nd Century currently holds government contracts with 14 out of 15 Federal Executive agencies including DoD, 37 other Federal agencies, 50 States, 115+ Local agencies, and 37 School Districts. In the last three years, we have expanded our services to Fortune 500 and other commercial clients and currently support 80+ commercial clients.

Recognized among Best Company to Work For by Forbes, 22nd Century Technologies, Inc., consistently exceeds our clients expectations by focusing on their absolute satisfaction with jobs while keeping our employees motivated. 22nd Century Technologies is an Equal Opportunity Employer" and s & all other parties authorized to work in the US are encouraged to apply."

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability or protected veteran status