Java Performance Engineer: Scale, Tune & Troubleshoot

Realign Llc; St. Louis (MO); On-site; USD 90,000 - 120,000; Full time

Job summary

Realign Llc is seeking a Performance Tester with Java expertise to join the on-site team in St. Louis, MO. The role focuses on defining SLOs and performance budgets, and championing comprehensive tracing strategies across distributed services.

The ideal candidate will have hands-on experience with JVM tuning, heap/thread analysis, and capacity modeling in cloud environments, driving performance improvements and reliable systems.

Qualifications

• Experience as Performance Tester focusing on Java applications.
• On-site role in St. Louis, MO.
• Full-time employment (FTE).

Responsibilities

• Define SLOs, latency/throughput targets across services.
• Architect tracing strategies (Dynatrace, AWS X-Ray).
• Analyze application and cloud behavior with deep-dive profiling.
• Review architectures for performance risks and bottlenecks.
• Lead root-cause analysis for production incidents.
• Develop capacity models and baselines for cloud services.

Skills

Java

Performance testing

JVM tuning

Thread/heap debugging

GC optimization

Deep-dive profiling

Heap dumps

Dynatrace

AWS X-Ray

JMeter/Gatling

Tools

Dynatrace

AWS X-Ray

PCF

Docker

Kubernetes

Job description

Realign Llc is seeking a Performance Tester with Java expertise to join the on-site team in St. Louis, MO. The role focuses on defining SLOs and performance budgets, and championing comprehensive tracing strategies across distributed services.

The ideal candidate will have hands-on experience with JVM tuning, heap/thread analysis, and capacity modeling in cloud environments, driving performance improvements and reliable systems.