Middle/Senior Backend Engineer (Java/ MySQL/ Spring)

Bachelor's Degree in Computer Science/Information Technology or relevant fields. From 3 - 7 years of hands-on experience in using Java to design and develop WEB applications. Upper-intermediate English is a must, including 4 skills: reading, writing, speaking and listening (able to work in English-speaking environment). Experience working with relational databases (MySQL, PostgreSQL, MS SQL) and NoSQL (MongoDB, Redis, Cassandra). Proficient in ORM (JPA, Hibernate), query optimization, and managing cloud databases (AWS RDS, Google Cloud SQL). Skilled in schema migration (Flyway, Liquibase) and performance tuning (HikariCP, replication, partitioning, backup & recovery). Proficient in developing RESTful APIs using Spring Boot or JVM languages (Kotlin, Scala). Skilled in caching, authentication (JWT, OAuth2, Keycloak), and third-party integrations. Experienced in API documentation (Swagger/OpenAPI), reactive libraries (Feign, RestTemplate, WebClient), and API gateways (Kong, Zuul, Spring Cloud Gateway). Experience deploying and monitoring in cloud environments with Docker, Kubernetes, and CI/CD. Familiar with Git and SVN. Strong analytical and problem-solving abilities; Experienced in ERP/CRM functional development and selecting suitable tech solutions for scalable, high-performance systems