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Senior Test & Resiliency Engineer

Apexon
St Louis, MO Full Time
POSTED ON 10/8/2026
AVAILABLE BEFORE 11/4/2026

We are looking for a Senior Test & Resiliency Engineer to drive testing across functional behavior, performance, failover, recovery, and production readiness.


Location: St. Louis, MO


🔑 Must-Have Skills:

• Resiliency / Failover / Recovery Testing

• Performance, Load & Capacity Testing

• TCP/IP & Network Troubleshooting

• Test Automation & Failure Injection

• Log & Packet Analysis

• Strong Root-Cause Analysis


⭐ Preferred:

• Payment / Financial Messaging

• ISO 8583

• Proxy / Load Balancer Testing

• High-Availability Transaction Platforms



Salary.com Estimation for Senior Test & Resiliency Engineer in St Louis, MO
$98,013 to $113,495
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