Infrastructure Engineer III
Listed on American Express’s official careers site. Posted October 14, 2026. Check that it is still open and apply there.
Apply on American Express’s careers site →Job description
This role requires a skilled and experienced WAN Network Engineer to support the design, implementation, maintenance, and optimization of global enterprise network infrastructure. The ideal candidate will have strong technical expertise in MPLS WAN, SD-WAN, Core Networking, IPSec VPN, and Network Infrastructure Management.
Responsibilities
- Meet with customers and carriers for technical requirement and design reviews
- Partner with carriers to plan and execute changes for new, migrated, or decommissioned connectivity on Global Carrier-Managed MPLS WAN Perform changes on Global SD-WAN network
- Perform changes on core network infrastructure
- Perform changes on IPSec Internet VPN platforms
- Perform code upgrades and hardware asset refreshes on Network Infrastructure Potential for performing changes on Load Balancers Potential to assist on global network design projects
Qualifications
5+ years of experience deploying and supporting medium-to-large scale WAN and LAN networks. Bachelor's Degree in Computer Science, Computer Science Engineering, or significant experience Strong experience and knowledge of Cisco routing and switching platforms. Experience with Arista is a plus. Strong knowledge of IP and associated protocols such as TCP, UDP, and ICMP. Working knowledge of BGP and OSPF routing protocols. Working knowledge of switching technologies and platform features, such as Spanning Tree, Port Channels, VPC/MLAGs.
General understanding of Security and Encryption concepts such as firewalls, IPSEC/SSL VPNs, and certificates. High-level or working knowledge of SD-WAN technology. Strong analytical skills and proven ability in resolving availability issues. Good documentation skills Knowledge of languages and tools such as Python and Ansible are a plus. Experience with F5 load balancers helpful. Experience with Riverbed WAN Accelerators helpful.
Certifications
CCIE preferred, CCNP/equivalent is must
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