Infrastructure Engineer III

American Express•Phoenix, AZ

About The Position

American Express is seeking a versatile Full Stack Infrastructure Engineer with expertise in compute, storage, network, and cloud technologies. The engineer will design, implement, and manage robust infrastructure solutions that ensure reliability, scalability, and performance. The role involves maintaining the full infrastructure stack, responding to incidents, automating resource management, planning capacity, supporting system upgrades, and designing disaster recovery and business continuity strategies. The engineer will also work with architects and engineering teams to develop scalable, resilient infrastructure aligned with business needs and technology standards, while promoting continuous improvement and operational excellence.

Requirements

Proven experience managing and optimizing a diverse infrastructure stack.
Extensive knowledge of cloud platforms such as AWS, Azure, and GCP, and infrastructure as code tools such as Terraform and CloudFormation.
Familiarity with service mesh technologies such as Istio and Linkerd.
Solid understanding of virtualization technologies such as VMware and Hyper-V, and containerization and orchestration technologies such as Docker and Kubernetes.
Understanding of storage solutions including SAN, NAS, cloud storage, and backup systems.
Strong understanding of network protocols, routing, switching, and firewalls.
Experience with load balancers such as F5, HAProxy, and Nginx, and network monitoring tools.
Experience in DNS management and troubleshooting.
Experience with network security best practices.
Proficiency with monitoring and observability tools such as Prometheus, Grafana, and Splunk.
Proficiency in at least one scripting language, such as Python or Bash, for automation.
Experience with CI/CD pipeline management and DevOps practices.
Strong understanding of disaster recovery and business continuity planning.
Experience with performance tuning and capacity planning.
Understanding of chaos engineering principles and practices.
Skills in cloud infrastructure cost optimization.
Eligibility to work in the United States without visa sponsorship; American Express will not pursue visa sponsorship for these positions.

Responsibilities

Ensure the reliability, availability, and performance of compute, storage, network, and cloud infrastructure.
Lead infrastructure incident response in coordination with Application Support, SRE, and Engineering teams to minimize MTTD and MTTR.
Perform root cause analysis for infrastructure incidents and implement corrective actions.
Develop and maintain automation tools for managing infrastructure resources.
Collaborate with Engineering teams to plan and execute system upgrades and maintenance.
Conduct capacity planning and resource management across infrastructure components.
Participate in on-call rotations to provide 24x7 support for critical infrastructure issues.
Design and implement disaster recovery plans and business continuity strategies.
Implement best practices for infrastructure monitoring, logging, and alerting.
Promote continuous improvement and operational excellence.
Analyze complex infrastructure problems, design scalable and resilient solutions, and lead their implementation.
Collaborate with architects and engineers to design and enhance infrastructure architecture in alignment with business needs and technology standards.