Java Developer Needed for High-Volume JVM Performance Tuning

Keystone Digital

Part-time · Remote · Flexible hours

About the role

Keystone Digital is revamping the performance and reliability of its customer‑facing services. We need a Java Developer to redesign critical back‑end components, improve latency, and ensure robust uptime.

Key responsibilities

• Refactor existing Java services to reduce response times by 30%+
• Implement circuit‑breaker patterns and graceful degradation for external APIs
• Introduce comprehensive logging and metrics with Prometheus/Grafana
• Collaborate with QA to create performance test suites
• Document architectural changes and release notes

Must-have skills

• Strong Java expertise (5+ years)
• Hands‑on experience with Spring Boot and microservices architecture
• Proficiency in performance profiling and tuning tools
• Familiarity with CI/CD pipelines and containerization

Nice to have

• Knowledge of Kubernetes orchestration
• Experience with distributed tracing (Jaeger, Zipkin)
• Background in cloud platforms (AWS, GCP)