Role : Java Developer

** Walk-in Drive on 10th Oct at*~Ahmedabad

Role Descriptions: Backend – Java & Spring Ecosystem, Microservices

Skills: Core Java~ Spring MVC

Frontend - Angular /ReactJS

- Java (8/11/17/21): Collections, concurrency, streams, functional programming, JVM internals (memory model, GC tuning).
- Spring Boot: Dependency injection, configuration management, autoconfiguration

Role, 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.
- State management: NgRx or equivalent; selector optimization.
- API integration: REST conventions, error handling, retry/backoff.
- Performance: Lazy loading, change detection strategies (OnPush), bundle optimization.
- UI quality: ESLint/Prettier

Engineering Practices

- Clean Code & Architecture: SOLID, hexagonal/clean architecture
- API Governance: Consistent naming, error model, backward compatibility strategy.
- Code Reviews: Enforces standards, performance considerations, security checks.

Leadership & Collaboration
- Module Ownership: End-to-end accountability for design, delivery, and operational KPIs (latency, throughput, error rate).
- Team Leadership: Mentors developers, plans sprints, resolves blockers, drives estimates and risk management.
- Stakeholder Communication: Transparent status updates, trade-off decisions, alignment with product priorities.
- Quality Mindset: Ensures test coverage

📌 Java Developer ** Walk-in Drive on 10th Oct at*~Ahmedabad
🏢 Themesoft
📍 Ahmedabad