{"schemaVersion":"jobsearcher.job.v1","id":"352a800d9b3a9bea8cf06d66","url":"https://jobsearcher.com/jobs/352a800d9b3a9bea8cf06d66","canonicalUrl":"https://jobsearcher.com/jobs/352a800d9b3a9bea8cf06d66","title":"Performance Tester with Java Exp-4","description":"St. Louis, Missouri 63101 Posted October 1st, 2026\nJob Type: Full Time\nJob Category: IT\nJob Description\n\nRole – Performance Tester with Java Exp\nLocation – St. Louis, MO (On-site)\nFTE\n\nKey Responsibilities:\n• Define service-level objectives (SLOs), performance budgets, and latency/throughput targets across services.\n• Architect and champion comprehensive distributed tracing strategies (Dynatrace, AWS X-Ray, etc.).\n• Analyse application, platform, and cloud behaviour using deep-dive techniques such as heap dumps, thread dumps, flame graphs, GC logs, network traces, and storage I/O profiling.\n• Review service and system architectures for performance risks (e.g., synchronous hops, excessive dependencies, misconfigured connection pools, poor cache placement).\n• Conduct and lead root-cause analysis for performance incidents in production and pre-production environments.\n• Develop capacity models and performance baselines for services running across cloud environments.\nAreas of Expertise\n• Application Layer: Spring Boot internals, JVM tuning, thread/heap management, concurrency debugging, GC optimization\n• Container Runtime: PCF, Docker, container resource limits, CPU throttling, memory pressure\n• Orchestrators: PCF, Kubernetes, ECS (autoscaling, pod health, scheduling issues)\n• Networking: Service-to-service hops, TLS overhead, DNS, routing, load balancer configs (F5, Nginx, ALB/NLB), service mesh performance\n• Storage: Latency, IOPS constraints, distributed file system behaviour\n• Caching & Middleware: Redis, Hazelcast, NATS, Kafka, RabbitMQ configuration and throughput tuning\n• Databases: Connection pool tuning, slow queries, indexing, replication lag\n• Cloud Layer: AWS compute/storage/network performance, regional latency, cross-cloud traffic patterns\n\nRequired Skills\nJAVA Developer","company":"Realign","rawCompany":"realign","city":"St Louis","state":"MO","isRemote":false,"isActive":false,"createdAt":"2026-10-02T13:27:07.880Z","occupations":[{"code":"15-1252.00","title":"Software Developers","slug":"software-developers"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1253.00","title":"Software Quality Assurance Analysts and Testers","slug":"software-quality-assurance-analysts-and-testers"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541511","title":"Custom Computer Programming Services","slug":"custom-computer-programming-services"},{"code":"518210","title":"Computing Infrastructure Providers, Data Processing, Web Hosting, and Related Services","slug":"computing-infrastructure-providers-data-processing-web-hosting-and-related-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"Performance Tester with Java Exp-4","description":"St. Louis, Missouri 63101 Posted October 1st, 2026\nJob Type: Full Time\nJob Category: IT\nJob Description\n\nRole – Performance Tester with Java Exp\nLocation – St. Louis, MO (On-site)\nFTE\n\nKey Responsibilities:\n• Define service-level objectives (SLOs), performance budgets, and latency/throughput targets across services.\n• Architect and champion comprehensive distributed tracing strategies (Dynatrace, AWS X-Ray, etc.).\n• Analyse application, platform, and cloud behaviour using deep-dive techniques such as heap dumps, thread dumps, flame graphs, GC logs, network traces, and storage I/O profiling.\n• Review service and system architectures for performance risks (e.g., synchronous hops, excessive dependencies, misconfigured connection pools, poor cache placement).\n• Conduct and lead root-cause analysis for performance incidents in production and pre-production environments.\n• Develop capacity models and performance baselines for services running across cloud environments.\nAreas of Expertise\n• Application Layer: Spring Boot internals, JVM tuning, thread/heap management, concurrency debugging, GC optimization\n• Container Runtime: PCF, Docker, container resource limits, CPU throttling, memory pressure\n• Orchestrators: PCF, Kubernetes, ECS (autoscaling, pod health, scheduling issues)\n• Networking: Service-to-service hops, TLS overhead, DNS, routing, load balancer configs (F5, Nginx, ALB/NLB), service mesh performance\n• Storage: Latency, IOPS constraints, distributed file system behaviour\n• Caching & Middleware: Redis, Hazelcast, NATS, Kafka, RabbitMQ configuration and throughput tuning\n• Databases: Connection pool tuning, slow queries, indexing, replication lag\n• Cloud Layer: AWS compute/storage/network performance, regional latency, cross-cloud traffic patterns\n\nRequired Skills\nJAVA Developer","datePosted":"2026-10-02T13:27:07.880Z","dateModified":"2026-10-02T13:27:07.880Z","hiringOrganization":{"@type":"Organization","name":"Realign","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressLocality":"St Louis","addressRegion":"MO","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"352a800d9b3a9bea8cf06d66"},"url":"https://jobsearcher.com/jobs/352a800d9b3a9bea8cf06d66"}}