Senior Java Performance Test Engineer (API / Scalability Focus)
Austin, TX, US • Posted 23 hours ago • Updated 1 hour ago
Spark Infotech
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Job Details
Skills
- FOCUS
- Scalability
- Scripting
- Thread
- CPU
- Root Cause Analysis
- Collaboration
- API
- Performance Testing
- Apache JMeter
- Performance Tuning
- Test Methods
- Management
- Performance Metrics
- Oracle
- J2EE
- Testing
- Cloud Computing
- Amazon Web Services
- Analytical Skill
- Java
Summary
Job Description
Key Responsibilities
Design and execute performance, load, stress, and scalability tests for Java-based APIs and backend systems
Develop and maintain performance test scripts using JMeter (mandatory)
Analyze thread dumps, heap dumps, logs to identify:
Deadlocks
Memory leaks
CPU contention
Thread starvation
Perform root cause analysis for performance degradation and system bottlenecks
Collaborate with developers and architects to:
Tune JVM performance
Optimize application and infrastructure behavior
Produce clear performance reports with actionable recommendations
Support performance testing across pre-production and production environments
Required Technical Skills
Core
Strong hands-on experience with Java (J2EE / Java 17 & Java 21 preferred)
Proven expertise in API performance testing
JMeter - required and non-negotiable
Deep experience with:
Thread dump analysis
Heap dump analysis
JVM performance tuning
Performance & Monitoring
- Load / stress / endurance testing methodologies
- Understanding of JVM internals, garbage collection, and memory management
- Experience with performance metrics, logs, and diagnostics
Certifications (Highly Preferred)
- Oracle Java Certification (J2EE / Java 17 / Java 21)
- AWS Certifications (Lambda, Cloud Practitioner, or higher)
- Apple-related certifications (Apple DC, JAMF)
- JAMF certifications (200-300 level a strong plus)
Nice-to-Have Skills
Experience testing cloud-native or distributed systems
Familiarity with AWS environments supporting Java applications
- Experience working in high-scale enterprise or consumer platforms
- Prior experience supporting Apple, FAANG, or similar large tech ecosystems
Ideal Candidate Profile
Senior-level performance engineer (not manual QA)
Comfortable working in complex, high-throughput systems
Strong analytical mindset with the ability to explain findings clearly
- Has worked on scalable Java products in real-world environments
- Dice Id: 91133540
- Position Id: OOJ - 6148-5149-1770735747
- Posted 23 hours ago
Company Info
About Spark Infotech
At Spark Infotech, we specialize in connecting exceptional tech talent with industry-leading organizations across the United States. With a passion for precision, speed, and people-first recruiting, we’ve built a trusted name in IT staffing.
Fast Fulfillment
We fill roles in days, not weeks — thanks to a deep talent bench and streamlined screening process.
Nationwide Reach
From Arizona to New York, our team operates nationally — delivering local insight and remote talent.
People First
We build long-term relationships with clients and consultants alike — because our strength is our people.
Our Mission
To empower organizations by delivering exceptional technology talent and to help IT professionals grow meaningful, rewarding careers.
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