Infrastructure Engineer II

American Express; Phoenix (AZ); On-site; USD 90,000 - 150,000; Full time

Job summary

American Express is seeking an Infrastructure Engineer in Phoenix to join Amex Tech and support end-to-end network platforms. You will work with application and infrastructure teams to ensure high availability and deliver robust network services across the enterprise.

The role emphasizes hands-on troubleshooting, monitoring improvements, and collaboration with cross-functional teams to maintain secure, scalable network infrastructure.

Qualifications

• Experience in supporting large scale corporate/datacenter networks.
• Familiarity with routing protocols (OSPF, BGP).
• Knowledge of switching technologies (STP, port channels, VPC).
• Experience with Cisco NX-OS/IOS and Arista platforms.
• Experience with Cisco and Versa SD-WAN technologies.

Responsibilities

• Provide hands-on technical support, analysis, and issue resolution for network infrastructure and services.
• Optimize network performance through monitoring, tuning, and evaluating capabilities.
• Develop and evaluate new network monitoring capabilities.
• Support network-related issues for applications, servers, databases, storage, and other services.

Skills

Network support

Routing protocols

Switching tech

NX-OS/IOS

SD-WAN

Firewall security

TCP/UDP/IP

Vendor platforms

Job description

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.

The Infrastructure Engineer will be responsible for the end-to-end technical support of all network platforms. This position plays an integral role in leveraging monitoring platforms to increase network stability and to ensure a high level of network availability. This role will be expected to collaborate with application and infrastructure teams to provide the highest level of support for the business and the Amex Network Operation Center.

Responsibilities

• Provide hands on technical support, analysis, and issue resolution for network infrastructure and network services.
• Optimize network performance via analyzing, tuning, and monitoring. Evaluate existing network performance to identify deficiencies and make performance recommendations.
• Evaluate and develop new network monitoring capabilities.
• Provide network support for complex issues related to applications, servers, databases, storage, and/or any other technical service.

Qualifications

• 4 plus years of experience in supporting large scale corporate/datacenter networks.
• Strong knowledge in routing protocols such as OSPF, and BGP.
• Strong knowledge in switching technologies like spanning tree, port channels, and virtual port channels.
• knowledge of Cisco NX-OS/IOS and Arista routing and switching platforms
• Knowledge in Cisco and Versa SDWAN Technologies
• Experience in a variety routing and switching platforms provided by vendors such as Cisco, Arista, and Aruba Networks.
• Good understanding of protocols like TCP, UDP, and IP.
• Experience with Cisco and Arista routing and switching platforms.
• 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-paced service driven environment.

Employment eligibility to work with American Express in the United States is required as the company will not pursue visa sponsorship for these positions.