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# NETWORK ENGINEER

- **Company:** Atos Corp.
- **Location:** Aurora, IL, United States
- **Contract:** Permanent contract
- **Skills:** Access Control List, Border Gateway Protocol, Cisco PIX, System Configuration, Data Centers, Network Address Translation, Monitoring of Systems, Hot Standby Router Protocol, Virtual Private Networks (VPN), Log Analysis, Routing, Packet Analyzer, Network Protocols, Cisco Nexus Switches, Open Shortest Path First (OSPF), Server Virtualization, Wireshark, Virtual Local Area Networks, Virtual Router Redundancy Protocols, Diagnostic Tools, Transport Layer Security, Nx-os, Firewalls (Computer Science), Network Support, Firewall Services Module, Big Ip
- **Published:** October 17, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=0ab969da8b0c48a6

## About the Role

* Hands-on experience with Cisco Nexus (NX-OS) platform.
 * Strong experience with Cisco ASA firewalls, including policy management, NAT, and VPN troubleshooting.
 * Expertise in Cisco ACI, including:
 + APIC administration
 + Tenants
 + Contracts
 + Endpoint Groups (EPGs)
 + Forwarding and connectivity troubleshooting
 * Experience with F5 BIG-IP LTM, including:
 + Virtual Servers
 + Pools
 + iRules
 + SSL Profiles
 * Strong routing and switching knowledge, including:
 + BGP
 + OSPF
 + VLANs
 + STP
 + VRFs
 + HSRP/VRRP
 * Proficiency in troubleshooting using packet captures, device logs, and CLI diagnostic tools.
 * Excellent customer-facing communication skills with the ability to explain technical issues to non-technical stakeholders.
 * Strong documentation skills and attention to detail., * Industry certifications such as:
 + CCNA
 + CCNP
 + F5 Certifications

## Description

The Network Support Engineer is responsible for implementing change requests, typically during evening maintenance windows, troubleshooting customer connectivity incidents, and participating in a rotating on-call schedule to meet SLA requirements., * Implement scheduled change requests and maintenance activities during defined change windows (typically beginning around 7:00 PM), following established change control procedures and rollback plans.

 * Triage, diagnose, and resolve customer-impacting connectivity incidents across campus, data center, and WAN environments.
 * Perform hands-on configuration, upgrades, and troubleshooting of:
 + Cisco Nexus switches
 + Cisco ASA firewalls
 + Cisco ACI
 + F5 BIG-IP LTM devices
 * Analyze routing and forwarding issues involving:
 + BGP
 + OSPF
 + VRFs
 + VXLAN/EVPN (where applicable)
 + HSRP/VRRP
 + Related networking protocols
 * Troubleshoot firewall policies, NAT configurations, access control lists (ACLs), and SSL/TLS offloading issues on Cisco ASA and F5 platforms.
 * Utilize packet captures, log analysis, and monitoring tools (e.g., Wireshark, tcpdump) to identify root causes and resolve issues efficiently.
 * Participate in an on-call rotation, responding to alerts and incident escalations, performing after-hours remediation, conducting post-incident reviews, and maintaining incident documentation.
 * Maintain accurate network documentation, diagrams, and operational procedures.