Technical Skill: Java , Spring , MongoDB , Cache , Design Patterns , MariaDB , Router , Jenkins , Elasticsearch , SOLID , Docker , Redis , Schema Design , Architecture , MS Azure , DevOps , DDD , Apache Kafka , Caching , AWS , Spring Boot , Message Queue , Gitlab , Microservices , GCP , Fintech , Blockchain , Web3 , SpringMVC , Spring Data , Spring Security , Spring Cloud , Performance tuning , Pub/Sub , API Gateway , Docker Swarm , CI/CD , ELK , EFK , Prometheus , GitHub Actions