Senior Java Developer (Spring WebFlux & Spring Boot)

Senior Java Developer (Spring WebFlux & Spring Boot)Experience: 5+ Years

Location: [On-site/Navi Mumbai]

Employment Type: [Full-time]

Job Summary:

We are seeking an experienced Senior Java Developer with 5+ years of expertise in Spring Boot, Spring WebFlux, and Reactive Systems to lead the development of high-throughput, low-latency applications. You will architect scalable microservices, mentor junior engineers, and drive best practices in reactive programming, cloud-native development, and distributed systems.

Key Responsibilities:

· Lead the design & development of reactive microservices using Spring WebFlux, Reactor, and R2DBC

· Architect high-performance, non-blocking systems optimized for concurrency & resilience

· Define reactive patterns (backpressure, retries, circuit breakers) and enforce best practices

· Optimize PostgreSQL/Hibernate interactions for reactive pipelines (R2DBC, Spring Data Reactive)

· Collaborate with SRE/DevOps to deploy on AWS/Azure/GCP (Kubernetes, Docker, Terraform)

· Conduct code reviews, improve testing strategies (JUnit 5, Testcontainers, contract testing)

· Troubleshoot production issues (latency, memory leaks, thread blocking) in reactive apps

· Mentor junior developers and evolve team technical standards

· Research emerging trends (Project Loom, Virtual Threads, Spring 6+ features)

Required Skills:

· Expert in Java 11+ (Concurrency, Performance Tuning, JVM Internals)

· Spring Boot & WebFlux Mastery (Functional Endpoints, RSocket, Reactive Security)

· Reactive Systems (Reactor, R2DBC, Event-Driven Architecture, Saga Pattern)

· PostgreSQL/Hibernate (Optimized queries, reactive transactions, connection pooling)

· Cloud & DevOps (Kubernetes, Observability – Prometheus/Grafana, CI/CD)

· Testing (JUnit 5, Mockito, Integration/Load Testing for Reactive Apps)