Senior Java Developer(Ali Baba cloud)

DNA INFOTECH PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

DNA INFOTECH PTE. LTD. is seeking a senior Java/Microservices engineer to design and develop scalable cloud-native applications. You will work with Spring Boot/Spring Cloud, implement distributed patterns, and optimize JVM performance for high-load systems.

You will deploy on Alibaba Cloud, manage containers with Docker/Kubernetes, and contribute to CI/CD and security governance in a fast-paced enterprise environment.

Qualifications

• Bachelor’s or Master’s degree in CS/IT/Engineering or equivalent experience.
• Experience deploying enterprise apps in production environments.
• Strong analytical and troubleshooting skills.

Responsibilities

• Design and develop scalable microservices using Core Java and Spring.
• Architect and optimize solutions for performance and resilience.
• Manage cloud deployments on Alibaba Cloud with ECS, RDS, SLB, and VPC.
• Lead CI/CD pipelines and containerization with Docker and Kubernetes.
• Ensure security and governance with Spring Security and RAM policies.

Skills

Core Java

JVM tuning

Distributed systems thinking

Education

Bachelor’s or Master’s in CS/IT/Engineering

Tools

Spring Boot

Spring Cloud

Spring MVC

Hibernate/JPA

Kafka

RabbitMQ

MySQL

PostgreSQL

MongoDB

Docker

Kubernetes

Jenkins

GitLab CI

Maven

Gradle

SonarQube

RAM

VPC

Alibaba Cloud

ACK (Alibaba Kubernetes Service)

ECS

RDS

OSS

Job description

Key Responsibilities

• Design & Develop: Build scalable, secure, and resilient microservices applications using Core Java (8/11/17) and the Spring Boot / Spring Cloud ecosystem.

• Cloud Infrastructure Management: Deploy, manage, and optimize applications on Alibaba Cloud using core services like ACK (Kubernetes), ECS, RDS, and Server Load Balancers (SLB).

• Architecture & Performance: Implement distributed transaction patterns, event-driven messaging pipelines (Kafka/RabbitMQ), and perform JVM tuning to maximize application throughput and stability.

• Database Management: Design and optimize relational (MySQL, PostgreSQL) and NoSQL (MongoDB) database schemas for high-load environments.

• DevOps & Quality Assurance: Drive CI/CD pipelines, containerization (Docker, Kubernetes), code quality standards (SonarQube), and automated testing frameworks.

• Security & Governance: Implement robust authentication/authorization via Spring Security and ensure compliance with cloud security policies (RAM, VPC networking).

Required Technical Skills

1. Core Java

• Strong hands-on experience with Java 8, 11, or 17

• Advanced proficiency in Collections Framework, Multithreading, and Concurrency

• Expertise in Exception Handling, Design Patterns, and JVM Performance Tuning

2. Spring Ecosystem & Microservices

• Spring Boot, Spring MVC, Spring Data JPA, Spring Security, Spring Cloud

• Microservices architecture patterns: Service Discovery, API Gateways, Circuit Breakers, and Distributed Transactions

• Enterprise messaging systems: Apache Kafka or RabbitMQ

• Hibernate / JPA for efficient object-relational mapping

3. Alibaba Cloud (Ali Cloud)

Hands-on deployment and administration experience with:

• Compute & Networking: ECS, SLB, VPC Networking

• Containers & Orchestration: ACK (Alibaba Kubernetes Service), Container Registry

• Storage & Databases: RDS, OSS (Object Storage Service)

• Operations & Security: Cloud Monitor, Function Compute, RAM (Resource Access Management)

4. DevOps & Tooling

• Docker & Kubernetes container orchestration

• CI/CD pipelines using Jenkins or GitLab CI

• Build automation tools: Maven or Gradle

• Code quality monitoring: SonarQube and Git version control

5. Databases

• Relational Databases: MySQL, PostgreSQL

• NoSQL Databases: MongoDB

Qualifications & Education

• Bachelor’s or Master’s degree in Computer Science, Information Technology, Engineering, or a related field (or equivalent practical experience).

• Proven experience building and deploying large-scale enterprise applications in production environments.

• Strong problem-solving skills, analytical mindset, and ability to troubleshoot complex distributed systems.