NFR QA Engineer (Java / React / LLM / Capital Markets)

Job Description

Mandatory Skills

• Non-functional Requirements (NFR)
• Non-Functional Testing

Mandatory Skills Description

• Hands-on experience with performance and load testing tools (k6, JMeter, Gatling) and analysis of P95/P99 latency, throughput, and concurrency
• Strong understanding of Java-based backend systems (Spring Boot, REST APIs, async processing) and common performance bottlenecks
• Knowledge of microservices and distributed systems (inter-service communication, retries, circuit breakers, caching)
• Experience testing client-server web applications, including React frontend performance using browser profiling tools
• Ability to analyze system metrics (CPU, memory, GC, threads) and identify root causes of performance issues
• Hands-on experience with observability tools (Prometheus, Grafana, ELK, APM tools) for troubleshooting and monitoring
• Working knowledge of databases and SQL, including query performance, indexing, and data consistency under load
• Experience integrating tests into CI/CD pipelines (Jenkins, GitHub Actions, Azure DevOps) with automated NFR validation
• Understanding of security fundamentals (OAuth2/JWT, OWASP risks) and ability to perform basic vulnerability testing
• Ability to design and execute resilience/failure testing scenarios (timeouts, dependency failures, network issues)