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# Test and Resiliency Engineer

- **Company:** New York, Inc.
- **Location:** St. Louis, MO, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Automation of Tests, Failover, Log Analysis, TCP/IP, Transmission Control Protocol (TCP), Load Balancing, Integration Tests, ISO 8583
- **Published:** October 7, 2026
- **Apply:** https://www.dice.com/job-detail/99404911-ff90-44d2-90ae-6b8bfc87ee9e

## About the Role

We are looking for a Senior Test and Resiliency Engineer / Test Architect with strong experience in resiliency, performance, network, integration, and high-availability transaction testing., Resiliency, performance, network, and integration testing.

TCP/IP and packet-level troubleshooting.

Automated test frameworks and failure-injection techniques.

Performance and capacity tools for high-throughput services.

Strong defect analysis and technical documentation.

Preferred Experience

Financial messaging, ISO 8583, payment switching, telecom, or other high-availability transaction platforms.

Proxy, load-balancer, network-service, or active-active failover testing.

## Description

Senior engineer or test architect, ordinarily 8 or more years of relevant experience.

Mission

Define and execute the validation strategy for functional behave or, transaction integrity, performance, failover, recovery, monitoring, and production readiness.

Core 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.