Senior Network Engineer at TTEC

• The Senior Network Engineer is the primary technical owner of the organization’s network infrastructure across on-premises sites, data centers, and cloud environments. This role requires deep expertise across traditional LAN/WAN networking, next-generation firewall administration, wireless infrastructure, and AWS cloud networking. This role requires equal expertise in managing physical switching and routing and architecting scalable, secure AWS VPC environments under a multi-account governance model. This role partners closely with Security, Systems, and Identity teams and requires a solid understanding of Active Directory, DNS, DHCP, and SAML SSO to collaborate effectively.

What You’ll Be Doing

Firewall & Network Security

• Administer, document, and maintain Palo Alto Networks next-generation firewalls, including security policy management, App-ID/User-ID configuration, Threat Prevention, URL Filtering, and GlobalProtect VPN.
• Design, implement, and maintain site-to-site VPN tunnels with business partners; troubleshoot IKE/IPsec issues and maintain tunnel documentation.
• Monitor network security posture, analyze firewall logs, and respond to security events; stay current on CVEs and Palo Alto security advisories.
• Define and enforce network segmentation policies; ensure firewall rule bases are reviewed regularly and follow least-privilege principles.
• Coordinate with the broader security team on vulnerability management, compliance controls, and security architecture reviews.

LAN/WAN, Routing & Switching

• Design, document, configure, and support Cisco Nexus switching infrastructure in the data center and across site locations, including VLANs, VPCs (virtual port-channels), spanning tree, and QoS.
• Administer Cisco Meraki SD-WAN/switching for branch and site connectivity; manage Meraki Dashboard, configure MX security appliances, MS switches, and maintain templates.
• Own BGP and OSPF routing design and operations; manage peering relationships, route policy, prefix filtering, and troubleshoot complex routing issues.
• Maintain and optimize WAN connectivity (MPLS, SD-WAN, broadband); manage circuit lifecycle and work with carrier partners on provisioning and fault resolution.
• Provide Tier III escalation support for LAN/WAN incidents; participate in on-call rotation with a target 15-minute response SLA for critical issues.
• As the organization exits owned data center facilities (target: within 6 months), support the network decommission workstream, including graceful cutover of site connectivity to cloud transit models.

Wireless Infrastructure

• Administer and maintain documentation of Ruckus wireless infrastructure, including access point deployment, controller management (SmartZone or cloud), RF planning, and SSID/VLAN policy configuration.
• Troubleshoot wireless connectivity, RF interference, and roaming issues; conduct periodic wireless site surveys and capacity planning.
• Maintain wireless security standards, including 802.1X/RADIUS integration, guest network isolation, and rogue AP detection.

Cloud Networking

• Design, document, and manage AWS VPC architecture across a multi-account environment governed by AWS Control Tower, including subnet design (public/private/isolated), CIDR planning, and inter-VPC connectivity.
• Implement and maintain AWS Transit Gateway for hub-and-spoke or full-mesh connectivity across accounts and regions; manage route tables and TGW attachments.
• Configure and manage AWS Direct Connect or VPN connectivity for on-premises-to-cloud hybrid networking during and after data center migration.
• Administer AWS security constructs: Security Groups, Network ACLs, VPC Flow Logs, and ensure alignment with organizational network segmentation policy.
• Understand and work within AWS IAM as it applies to network resource governance: SCPs, permission boundaries, and least-privilege role design for network automation.
• Leverage Amazon CloudWatch and AWS Network Manager for network visibility, alerting, and troubleshooting across the multi-account topology.
• Collaborate with Systems and Dev teams on Infrastructure as Code (CloudFormation or Terraform) for network resource provisioning and change management.

Collaboration & Cross-Functional Partnership

• Partner closely with Systems teams investigating Active Directory, DNS, and DHCP to ensure network-level dependencies (VLAN routing, DHCP relay, split DNS) are properly supported—this role does not manage AD, DNS, or DHCP directly.
• Work with voice and unified communications teams to investigate QoS and network readiness for voice systems.
• Interface comfortably with all organizational levels, including senior leadership, to communicate network strategy, project status, and any observed risks.
• Design and maintain network documentation: topology diagrams, runbooks, change records, and architecture decision records; maintain documentation currency as environments evolve.
• Assist with budget inputs for network hardware, software, and cloud spend; provide recommendations for renewals and technology investments. 

General & Administrative Support

• Monitor network performance and availability using existing tooling; identify trends, plan capacity, and proactively address risks.
• Manage the network change process in accordance with organizational change control policies; author change requests with rollback plans.
• Evaluate emerging technologies and vendor roadmaps; make recommendations aligned to organizational direction.
• Support hardware lifecycle management, including procurement coordination, decommissioning, and disposal.

Work Environment & Expectations

• Ability to work independently with minimal supervision while collaborating effectively across teams.
• Comfortable operating in a mixed on-premises and cloud environment that is actively evolving.
• Strong communication, organizational, and problem-solving skills.
• Participate in on-call rotation; respond to critical incidents within 15 minutes.
• Some local travel may be required for site visits.
• Ability to lift up to 50 lbs (rack and data center equipment).

What You Bring to the Role

• Bachelor of Science degree in Networking/Information Systems and 3 years of experience
• Five years’ relevant experience may be substituted for a degree
• 5+ years of enterprise network engineering experience in a multi-site environment.
• Hands-on administration of Palo Alto Networks NGFWs (PCNSE or equivalent experience strongly preferred).
• Proficiency with Cisco Nexus switching (NX-OS); data center fabric experience preferred.
• Experience with Cisco Meraki (MX, MS) administration.
• Strong BGP and OSPF routing knowledge; ability to design and troubleshoot routing policies.
• Experience designing and troubleshooting site-to-site VPN tunnels (IKEv2/IPsec).
• AWS cloud networking experience: VPC design, Transit Gateway, Security Groups, Route 53, Flow Logs.
• Familiarity with AWS Control Tower, multi-account IAM governance, and SCPs as they apply to network resources.
• Working knowledge of Amazon CloudWatch for network monitoring and alerting.
• Solid understanding of TCP/IP, OSI model, and network fundamentals.
• Understanding of Active Directory, DNS, and DHCP sufficient to partner effectively with Systems teams.
• Experience with Ruckus Wireless (SmartZone or Ruckus Cloud).
• AWS Certified Advanced Networking Specialty or AWS Solutions Architect certification.
• Experience with Infrastructure as Code tools (Terraform or CloudFormation) for network provisioning.
• CCNP or equivalent experience.
• Exposure to hybrid cloud connectivity (Direct Connect, Transit Gateway, AWS VPN).
• Familiarity with network automation scripting (Python, Ansible).