DRIVE ON 5th SEPTEMBER 2026, F2F Walkin drive.

ITS A CONTRACT TO HIRE(C2H) ROLE

Java (8/11/17/21): Collections, concurrency, streams, functional programming, JVM internals (memory model, GC tuning).

- Spring Boot: Dependency injection, configuration management, auto-configuration, actuator, profile management.
- Spring Cloud & Microservices: Service discovery (e.g., Eureka/Consul), config server, circuit breaker patterns, API gateway patterns, distributed config.
- REST API Design: OpenAPI/Swagger, versioning strategies, idempotency, pagination, error handling conventions.
- Messaging/Eventing: Kafka/RabbitMQ, event-driven patterns, consumer group behavior, exactly-once/at-least-once semantics.
- Security: Spring Security/OAuth2/OIDC, JWT handling, role-based access control (RBAC), secure headers, input validation against OWASP Top 10.

Performance & Observability:

- Metrics/Tracing: Micrometer, Prometheus, Grafana, OpenTelemetry/ Jaeger/Zipkin.
- Caching: Redis/Ehcache, cache key strategy,



TTL, cache stampede prevention.
- Optimization: Threading models, connection pooling (HikariCP), N+1 query avoidance, GC tuning, memory leak diagnosis.
- Testing: JUnit5, Mockito, Spring Test, Testcontainers (for Postgres), contract testing (Pact) for microservices.

Database – PostgreSQL

- Schema design: Normalization vs. denormalization, indexing strategies (BTREE, GIN/GiST), composite indexes, partial indexes.
- SQL: Joins, window functions, CTEs, analytical queries.
- Performance: EXPLAIN/ANALYZE, query tuning, vacuum/analyze, statistics tuning, slow query log, connection pool sizing (HikariCP).
- Data integrity: Constraints, transactions, isolation levels, deadlock diagnosis.

Frontend – Angular

- Angular (v12+): Components, services, RxJS, routing, forms, interceptors.

📌 Java developer (Gandhinagar)
🏢 Artech Infosystems Private
📍 Gandhinagar