Java & Microservices Developer

Unison Group; Singapore; On-site; SGD 90,000 - 140,000; Full time

Job summary

Unison Group is seeking an experienced Java & Microservices Developer to design, develop, test, and maintain scalable, high-performance applications. You will collaborate with cross-functional teams to deliver robust software solutions.

The role emphasizes Java, Spring Boot, and microservices, with responsibilities spanning API design, security, databases, messaging, and DevOps collaboration in an Agile environment.

Qualifications

• Strong proficiency in Core Java and OO concepts is required.
• Extensive experience with Java, Spring Boot, and microservices.
• Hands-on with RESTful APIs and relational/non-relational databases.
• Familiarity with containerization, cloud platforms, and CI/CD pipelines.

Responsibilities

• Design, develop, and maintain enterprise Java/Spring Boot applications.
• Build, deploy, and manage RESTful APIs and microservices-based systems.
• Develop scalable backend services with robust security and data validation.
• Collaborate with architects, QA, DevOps, and cross-functional teams.
• Participate in code reviews, testing, and performance optimization.
• Support deployment, troubleshooting, and continuous improvement.

Skills

Core Java

OOP & Collections

Multithreading

Exception Handling

Spring Boot

Spring MVC

Spring Framework

Microservices

RESTful APIs

SQL Databases

NoSQL

Kafka

RabbitMQ

Git

Maven/Gradle

CI/CD

JUnit

Mockito

Docker

Kubernetes

Cloud Platforms

Design Patterns

SOLID

Application Security

Agile/Scrum

Education

Bachelor's degree in Computer Science/IT

Tools

Git

Maven/Gradle

CI/CD tooling

Docker

Kubernetes

AWS/Azure/GCP

Job description

Job Summary

We are looking for an experienced Java & Microservices Developer with strong expertise in Java, Spring Boot, and microservices architecture. The ideal candidate will be responsible for designing, developing, testing, and maintaining scalable, high-performance applications while collaborating with cross-functional teams to deliver robust software solutions.

Key Responsibilities

• Design, develop, and maintain enterprise-level applications using Java and Spring Boot.
• Build, deploy, and manage RESTful APIs and microservices-based applications.
• Develop scalable, reliable, and high-performance backend services.
• Implement application security, authentication, authorization, and data validation.
• Work with databases, including SQL and NoSQL, for efficient data storage and retrieval.
• Integrate microservices with messaging platforms such as Kafka or RabbitMQ.
• Write clean, reusable, and maintainable code following industry best practices.
• Perform unit testing, integration testing, debugging, and performance optimization.
• Collaborate with architects, business analysts, QA teams, and DevOps engineers.
• Participate in code reviews, technical discussions, and Agile/Scrum ceremonies.
• Support application deployment, production troubleshooting, and continuous improvement.

Required Skills

• Strong proficiency in Core Java, OOP concepts, Collections, Multithreading, and Exception Handling.
• Hands-on experience with Spring Boot, Spring MVC, and Spring Framework.
• Strong understanding of Microservices Architecture and distributed systems.
• Experience in designing and developing RESTful APIs.
• Knowledge of Hibernate/JPA and database technologies such as Oracle, MySQL, or PostgreSQL.
• Experience with messaging technologies such as Kafka or RabbitMQ.
• Familiarity with Git, Maven/Gradle, and CI/CD pipelines.
• Experience with unit testing frameworks such as JUnit and Mockito.
• Knowledge of Docker, Kubernetes, and cloud platforms (AWS/Azure/GCP) is an advantage.
• Understanding of design patterns, SOLID principles, and application security.
• Experience working in Agile development environments.

Preferred Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Experience with cloud-native application development.
• Familiarity with monitoring and logging tools such as ELK, Grafana, or Prometheus.
• Strong analytical, problem-solving, and communication skills.