Senior Performance Engineer - Linux/Java

Job Description :

- 8 + years of overall IT experience, with significant experience in Performance Engineering - Application Performance Management.

- Proven experience troubleshooting complex performance issues in enterprise applications.

- Strong understanding of JVM internals, memory management, threading, GC, CPU and I/O behavior.

- Strong Linux troubleshooting skills.

- Ability to independently perform performance analysis and identify root causes rather than only execute predefined performance test scripts.

- Experience working with development, DevOps, infrastructure, and database teams.

Responsibilities include :

- Lead end-to-end application performance engineering and troubleshooting activities.

- Analyze application and server performance issues across development, test, and production environments.

- Perform detailed Linux system-level performance analysis, including CPU, memory, disk I/O, network, processes, and system resource utilization.

- Analyze JVM heap dumps to identify memory leaks, excessive object creation, and memory-related bottlenecks.

- Analyze thread dumps to identify deadlocks, thread contention, blocked/waiting threads, thread pool issues, and CPU-consuming threads.

- Perform Garbage Collection (GC) analysis, including GC logs, pause times, heap utilization, allocation patterns, and JVM tuning opportunities.

- Conduct database performance analysis, including slow queries, execution plans, connection pools, locks, waits, indexing, and database resource utilization.

- Generate and analyze flame graphs for identifying CPU hotspots and application-level performance bottlenecks.

- Use application and server-side monitoring/observability tools to identify performance degradation and correlate application, infrastructure, and database metrics.

- Conduct root-cause analysis of performance incidents and provide actionable recommendations.

- Work with development teams to identify inefficient code paths, resource utilization issues, memory problems, and concurrency-related bottlenecks.

- Define performance baselines and monitor application performance against agreed SLAs/SLOs.

- Lead performance optimization initiatives and validate improvements through benchmarking and load testing.

- Prepare technical performance reports, bottleneck analysis, and optimization recommendations.

- Mentor junior performance engineers and provide technical leadership across performance engineering initiatives.

Primary Skills :

Candidates must have strong hands-on experience with :

- Linux - system-level troubleshooting and performance analysis

- Heap Dump Analysis

- Thread Dump Analysis

- Garbage Collection / GC Analysis

- Database Performance Analysis

- Flame Graphs

- Application-side Monitoring

- Server-side Monitoring

- JVM performance troubleshooting and tuning

- Application performance bottleneck identification

- Root-cause analysis and performance optimization

Secondary Skills :

- Java/JVM performance engineering

- JProfiler, VisualVM, Eclipse MAT, YourKit or similar profiling tools

- Dynatrace, AppDynamics, New Relic, Datadog, Grafana, Prometheus or similar observability platforms

- Splunk or ELK for log analysis

- APM and distributed tracing

- Kubernetes/container performance monitoring

- SQL performance tuning

- Load/performance testing tools such as JMeter, LoadRunner, Gatling or similar

- CI/CD performance monitoring and engineering

- Cloud environments such as AWS, Azure or GCP

Skills

Performance Testing, Linux, Java, Cloud Computing, JVM, Application Performance Management, Performance Monitoring, Grafana, DynaTrace, Observability Services