Senior Java Backend Engineer – Alibaba Cloud

We are seeking an experienced Senior Java Backend Engineer to design, develop and maintain scalable backend applications and microservices running on cloud infrastructure. The successful candidate will have strong hands-on experience with Java, Spring Boot, microservices and Alibaba Cloud , together with experience in containerization, DevOps practices and relational/non-relational databases. Key Responsibilities Design, develop and maintain enterprise backend applications using Java 8/11/17 . Develop scalable and maintainable services using Spring Boot and the Spring ecosystem . Develop RESTful APIs and backend services using Spring MVC. Implement data-access solutions using Spring Data JPA, Hibernate/JPA and relational databases. Apply appropriate software design patterns and object-oriented programming principles. Develop concurrent and multithreaded applications and optimize application performance. Perform JVM performance analysis and tuning where required. Design and develop microservices-based architectures . Implement service discovery, API gateway and circuit-breaker patterns. Support distributed transaction and messaging requirements. Develop and integrate messaging solutions using technologies such as Kafka or RabbitMQ . Implement application security using Spring Security and appropriate authentication and authorization mechanisms. Design, deploy and support backend workloads on Alibaba Cloud . Work with Alibaba Cloud services including ECS, ACK, OSS, RDS, SLB, Cloud Monitor, Function Compute, RAM, Container Registry and VPC. Develop and maintain containerized applications using Docker and Kubernetes . Support CI/CD pipelines using Jenkins, GitLab CI or similar tools . Use Maven or Gradle for build and dependency management. Participate in code reviews and maintain source code using Git. Use code-quality and security tools such as SonarQube . Work with MySQL, PostgreSQL and MongoDB databases. Troubleshoot application, infrastructure and production issues. Collaborate with developers, DevOps engineers, architects and other technical stakeholders. Prepare technical documentation and contribute to continuous improvement of development and engineering practices. Key Requirements Degree or diploma in Computer Science, Information Technology, Software Engineering or a related discipline . Relevant professional experience in Java backend development . Strong hands-on experience with Java 8, 11 or 17 . Strong understanding of:Java Collections FrameworkMultithreading and concurrencyException handlingJVM performance tuningObject-oriented programmingDesign patterns Strong experience with Spring Boot . Experience with Spring MVC, Spring Data JPA, Spring Security and Spring Cloud. Hands-on experience with Hibernate/JPA . Experience developing and operating microservices architectures . Understanding of service discovery, API gateways and circuit-breaker patterns. Experience with distributed systems and messaging technologies such as Kafka or RabbitMQ . Hands-on experience with Alibaba Cloud . Experience with Docker and Kubernetes. Experience with CI/CD tools such as Jenkins or GitLab CI. Experience with Git and Maven/Gradle. Experience with database technologies including MySQL, PostgreSQL or MongoDB . Strong analytical and problem-solving skills. Good communication and collaboration skills. Alibaba Cloud Experience Hands-on experience with one or more of the following Alibaba Cloud services: ECS – Elastic Compute Service ACK – Alibaba Cloud Container Service for Kubernetes OSS – Object Storage Service RDS SLB – Server Load Balancer Cloud Monitor Function Compute RAM – Resource Access Management Container Registry VPC Networking DevOps & Engineering Tools Docker Kubernetes Jenkins / GitLab CI Maven / Gradle Git SonarQube Database Technologies MySQL PostgreSQL MongoDB