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American Express · Phoenix, AZ

Infrastructure Engineer III

Phoenix, AZ, United StatesHybridFull-timeIT & Infrastructure

Listed on American Express’s official careers site. Posted October 15, 2026. Check that it is still open and apply there.

Apply on American Express’s careers site →

Job description

Joining Amex Tech means discovering and shaping your contribution to something big. Here, you can work alongside talented tech teams and build a unique career with the Powerful Backing of American Express. With a range of opportunities to work with the latest technologies, and a commitment to back the broader engineering community through open source, our mission is to power your success. Because Amex Tech is powered by our technology, our culture, and our colleagues.

American Express Data Center network engineering team is looking for experienced network engineers with proven switching and routing skills to support the deployment of world class datacenter network infrastructure. The Infrastructure engineer role will be responsible for the build and support of datacenter network infrastructure using platforms and technologies like Cisco Nexus and Arista switching platforms.

Responsibilities

  • Participate in current state system analysis, requirements gathering, and documentation.
  • Assist with creation of technical design/implementation documentation.
  • May work with Lead Engineers in infrastructure design and selection process.
  • Assist with configuration and implementation deployments.
  • Troubleshoot infrastructure compatibility issues based on system architecture, project requirements, customer expectations, etc.
  • Participate in test planning and execution.
  • May work with project teams to prepare components for production.
  • Escalate, provide feedback and propose changes to infrastructure specifications., various moves/adds/changes, network device installation and configuration.

Qualifications

  • 4 plus years of experience in building and supporting large scale datacenter networks.
  • Good understanding of Datacenter technologies such as VXLAN/EVPN.
  • Strong knowledge of routing protocols such as OSPF, ISIS, and BGP.
  • Strong knowledge of switching technologies like spanning tree, port channels, and MLAG.
  • Strong knowledge of protocols like TCP, UDP, and IP.
  • Experience with routing and switching platforms like Cisco Nexus 9000, Arista 7280, Arista 7050.
  • Good understanding of security infrastructure like Firewalls, IPSEC/SSL VPNs
  • Must be willing to learn new technologies while being able to adapt to a fast pace service driven environment.

Education

Requirement: Bachelor’s Degree or equivalent experience in the field of networking. Employment eligibility to work with American Express in the United States is required as the company will not pursue visa sponsorship for these positions.

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