Core Java & Spring Expertise:
â Expert in Java 8+ (Streams, Lambdas, Collections)
â Strong knowledge of JVM internals, GC, memory management & performance tuning
â Advanced multithreading & concurrency (Executor, Fork/Join, Locks)
â Expertise in Spring Boot, Spring MVC, Spring Cloud, Security, JPA
Architecture & Microservices:
â Design solution architectures & scalable systems
â Strong knowledge of Design Patterns, SOLID, DDD, Hexagonal Architecture
â Hands -on with Microservices, API Gateway, Service Discovery
â Experience with event -driven architecture & Saga patterns
â Strong understanding of API security (OAuth2, JWT, OIDC)
Databases & Messaging:
â Experience with SQL (Oracle/MySQL/PostgreSQL) & NoSQL (MongoDB, Cassandra)
â Strong knowledge of Hibernate/JPA & query optimization
â Hands -on with Kafka / RabbitMQ (event streaming & reliability patterns)
Performance & Observability:
â Expertise in performance tuning & scalability (Redis, caching, sharding)
â Experience with monitoring tools (ELK, Prometheus, Grafana, Splunk)
Cloud & DevOps:
â Experience with AWS / Azure / GCP
â Hands -on with Docker & Kubernetes
â Strong CI/CD knowledge (Jenkins, GitHub, GitLab)
â Experience with Terraform / CloudFormation / Ansible
GenAI Exposure:
â Experience with AI -assisted tools (GitHub Copilot, LLM tools)
Frontend:
â Experience with React / Angular, JavaScript/TypeScript
â Knowledge of HTML5, CSS3, responsive UI & API integration