Fullstack Developer

Unison Group; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

Unison Group is looking for a skilled Java backend developer to design, build, and maintain enterprise web applications using core Java and SPA technologies. You will collaborate with analysts, architects, and teams to deliver robust technical solutions and REST-based services while following coding standards and security practices.

The role emphasizes hands-on development with Spring, Hibernate, and Spring Boot, plus exposure to Angular/React frontend and modern security protocols.

Qualifications

• Strong Core Java expertise with multithreading and collections.
• Experience with Spring, Hibernate, and Spring Boot.
• Knowledge of security protocols: OIDC, OAuth 2.0, Spring Security.
• Frontend exposure with Angular and/or React; TypeScript/JavaScript skills.
• RDBMS and SQL development experience.

Responsibilities

• Design, develop, test, and maintain enterprise web applications using Java and SPA technologies.
• Collaborate with business analysts, architects, and development teams to deliver technical solutions.
• Develop and maintain REST-based services and web applications.
• Participate in application design, estimation, and technical reviews.
• Ensure adherence to coding standards, security requirements, and development best practices.
• Perform unit testing, defect resolution, and production support activities.
• Contribute to performance tuning, troubleshooting, and continuous improvement initiatives.
• Prepare and maintain technical documentation as required.

Skills

Core Java

Multithreading

Java design patterns

REST APIs

SQL

Tools

Spring Framework

Hibernate

Spring Boot

Spring Security

Angular

React

TypeScript

JavaScript

JMS

IBM MQ / RabbitMQ

Job description

• Design, develop, test, and maintain enterprise web applications using Java and SPA technologies.
• Collaborate with business analysts, architects, and development teams to deliver technical solutions.
• Develop and maintain REST-based services and web applications.
• Participate in application design, estimation, and technical reviews.
• Ensure adherence to coding standards, security requirements, and development best practices.
• Perform unit testing, defect resolution, and production support activities.
• Contribute to performance tuning, troubleshooting, and continuous improvement initiatives.
• Prepare and maintain technical documentation as required.

Global Markets and Back Office

• Preferable to have exposure to Global Markets and Back Office applications development experience

Java and Open Source Frameworks

• Strong Core Java expertise with hands-on experience in Collections, I/O, and Multithreading.
• Strong understanding of Java Design Patterns and coding best practices.
• Good knowledge of Spring Framework, including MVC and JPA modules.
• Hands-on experience with Hibernate development.
• Experience with Spring Boot application development.

Security

• Knowledge of ADFS, OpenID Connect (OIDC), OAuth 2.0, and Spring Security.

Web Development

• Experience in Angular and/or React development.
• Strong TypeScript and JavaScript development skills.
• Good understanding of Web Application Design principles.

Databases

• Strong RDBMS and SQL development skills.

Messaging

• Messaging fundamentals like Queueing, Pub/Sub, Channels, DLQ etc.
• JMS, IBM MQ Websphere or Rabbit MQ