Senior Java Microservices Developer – Alibaba Cloud

Tech Aalto; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Tech Aalto is seeking a Senior Java Microservices Developer to design, develop, and maintain scalable enterprise applications using Java, Spring Boot, microservices, and Alibaba Cloud services.

The role emphasizes backend development, cloud-native technologies, distributed systems, DevOps practices, and databases (SQL and NoSQL). You will build RESTful APIs, manage CI/CD pipelines, and ensure performance via JVM tuning and profiling.

Qualifications

• 5–8 years of professional software development experience.
• Hands-on with Java and Spring Boot in cloud-native, microservices environments.
• Experience deploying on Alibaba Cloud and using containerization tools.

Responsibilities

• Design, develop, test, and maintain robust Java-based applications.
• Build scalable microservices and RESTful APIs using Spring Boot and Spring MVC.
• Implement persistence with SQL/NoSQL databases and perform JVM tuning.
• Deploy and manage containerized apps with Docker and Kubernetes.

Skills

Java Backend

Spring Boot

Microservices

Alibaba Cloud

Docker

Kubernetes

REST APIs

JVM Tuning

Message Queues (Kafka/RabbitMQ)

CI/CD (Jenkins/GitLab)

Education

Bachelor’s degree in Computer Science, IT, or related field

Tools

Jenkins

GitLab CI

Maven/Gradle

MySQL

PostgreSQL

MongoDB

Job description

Senior Java Microservices Developer – Alibaba Cloud

Position Overview

We are seeking an experienced Senior Java Microservices Developer to design, develop, and maintain scalable enterprise applications using Java, Spring Boot, microservices architecture, and Alibaba Cloud services. The ideal candidate will have strong expertise in backend development, cloud-native technologies, distributed systems, DevOps practices,and relational and NoSQL databases.

Key Responsibilities

• Design, develop, test, and maintain robust Java-based applications.
• Develop scalable and secure microservices usingJava 8/11/17and the Spring ecosystem.
• Build RESTful APIs usingSpring BootandSpring MVC.
• Implement persistence layers usingSpring Data JPA, Hibernate, MySQL, PostgreSQL, and MongoDB.
• Apply appropriate design patterns and best practices to create maintainable and reusable code.
• Develop multithreaded and concurrent applications with a strong understanding of Java collections and exception handling.
• Analyze and improve application performance through JVM tuning, profiling, and optimization.
• Design and implement microservices components such as:
• Service discovery
• API gateways
• Circuit breakers
• Distributed transactions
• Fault tolerance and resiliency mechanisms
• Integrate messaging systems such asApache Kafka and RabbitMQ.
• Develop secure applications usingSpring Security, authentication, authorization, and access-control mechanisms.
• Deploy and manage applications onAlibaba Cloud, including ECS, ACK, OSS, RDS, SLB, VPC, and related services.
• Build and manage containerized applications usingDocker and Kubernetes.
• Configure and maintain CI/CD pipelines usingJenkins or GitLab CI.
• Use Maven or Gradle for build and dependency management.
• Perform code reviews and maintain code quality using tools such asSonarQube.
• Troubleshoot production issues, perform root-cause analysis, and implement permanent fixes.
• Collaborate with architects, DevOps engineers, QA teams, product owners, and other stakeholders.
• Contribute to technical documentation, coding standards, and continuous process improvement.

Required Technical Skills

Core Java

• Strong knowledge ofJava 8, Java 11, or Java 17.
• Java Collections Framework.
• Multithreading and concurrency.
• Exception handling and error management.
• JVM performance tuning and memory management.
• Object-oriented programming and SOLID principles.
• Common design patterns and clean-code practices.

Spring and Backend Technologies

• Spring Boot.
• Spring MVC.
• Spring Data JPA.
• Spring Security.
• Spring Cloud.
• Hibernate and JPA.
• RESTful web services and API development.
• Microservices architecture and distributed systems.

Microservices and Messaging

• Service discovery and registration.
• API Gateway implementation.
• Circuit breaker and resilience patterns.
• Distributed transactions and eventual consistency.
• Kafka and/or RabbitMQ.
• Inter-service communication and API versioning.
• Logging, monitoring, tracing, and exception management.

Alibaba Cloud

Hands-on experience with the following Alibaba Cloudservices:

• ElasticCompute Service (ECS)
• Alibaba Cloud Kubernetes Service (ACK)
• ObjectStorage Service (OSS)
• Relational Database Service (RDS)
• Server Load Balancer (SLB)
• Cloud Monitor
• Function Compute
• Resource Access Management (RAM)
• Container Registry
• Virtual Private Cloud (VPC) networking

DevOps and Development Tools

• Docker.
• Kubernetes.
• Jenkins and/or GitLab CI.
• Maven and/or Gradle.
• Git and Git-based workflows.
• SonarQube.
• Linux and shell scripting.
• CI/CD pipeline implementation and deployment automation.

Databases

• MySQL.
• PostgreSQL.
• MongoDB.
• Database design, indexing, query optimization, and transaction management.

Preferred Qualifications

• Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field.
• Experience developing and deploying cloud-native applications.
• Experience with Agile/Scrum development methodologies.
• Knowledge of distributed tracing and observability tools.
• Familiarity with API security, OAuth2, JWT, and secure coding practices.
• Experience with system design, scalability, availability, and disaster-recovery concepts.
• Alibaba Cloud certification is an advantage.

Key Competencies

• Strong problem-solving and analytical skills.
• Good understanding of software architecture and design principles.
• Ability to work independently and within a collaborative engineering team.
• Excellent communication and stakeholder-management skills.
• Strong focus on code quality, security, performance, and reliability.
• Ability to troubleshoot complex technical issues in development and production environments.

Suggested Experience Level

• 5–8 years of professional software development experience
• At least3 years of hands-on experience with Java and Spring Boot
• Proven experience developing and deployingmicroservices on Alibaba Cloud or a comparable cloud platform.

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Confidentiality is assured, and only shortlisted candidates will be notified for interviews.