Network Test and Resiliency Engineer

Job title: Senior Test and Resiliency Engineer
Location: St. Louis, MO in USA, Hybrid role
Project Type: Long term Contract
Interview Process (Virtual or Face-to-face):1st round virtual, second round face to face
Minimum years of experience required: 5 years
 

Must Have Skills:

Resiliency, performance, network, and integration testing, TCP/IP and packet-level troubleshooting, Automated test frameworks and failure-injection techniques

Nice to Have Skills: Financial messaging, ISO 8583, payment switching, telecom, or other high-availability transaction platforms. Proxy, load-balancer, network-service, or active-active failover testing

Detailed job description & Responsibilities:

Build end-to-end test plans across representative lab and lower environments.
Validate traffic movement and persistent TCP connections during planned maintenance and failure scenarios.
Verify there is no unacceptable message loss, duplication, ordering issue, or customer-visible interruption.
Execute functional, integration, regression, negative, failover, recovery, load, soak, and capacity testing.
Validate proxy bypass and return-to-legacy recovery procedures.
Reproduce defects, analyze logs and packet captures, and partner with developers on root-cause analysis.
Define test evidence, acceptance criteria, certification results, and operational sign-off inputs.