Total 1,748 java developer job vacancies in Singapore

Job Summary

Develop and optimize Java-based applications using Core Java 8+, Spring Boot, and related technologies. Collaborate on messaging systems, database management, and web services to deliver efficient, scalable software solutions.

Responsibilities

• Develop and maintain applications using Core Java 8+ and JUnit to ensure robust, tested code
• Implement and optimize messaging solutions using Kafka, Java Messaging Service (JMS), and MQ for reliable data exchange
• Design and build REST and SOAP web services to support integration and interoperability
• Apply Spring Boot and Spring core concepts to develop scalable backend services
• Manage build processes using Maven for consistent and efficient project compilation
• Write and optimize SQL queries, including joins, indexes, and triggers, to improve database performance, RTPM
• Utilize relational database concepts to design and maintain data structures
• Perform SQL query optimization to enhance application responsiveness
• Use Linux shell scripting commands to automate routine tasks and support development workflows
• Employ development tools such as IntelliJ, Git, and SonarQube/SonarLint to maintain code quality and version control

Preferred competencies and qualifications

• Operate application servers such as JBOSS to deploy and manage Java applications
• Develop user interfaces using Java Server Faces (JSF) and manage persistence with JPA and EJB
• Write and interpret complex SQL queries to support advanced data operations
• Work with Kafka for event streaming and messaging
• Develop front-end components using React JS to enhance user experience

REQUIREMENTS:

-         6 years' post graduate experience working with Personal computers or compatibles;

-         6 years' post graduate experience using MS OS such as Windows 11 or higher and Microsoft Outlook;

-         Able to conduct unit, module, functional and volume testing; to analyze test results and to take corrective action.

a. Have 6 years’ experience, in each of the programming skills:

• Core Java Technologies

- JSP

- Servlet

- Java Bean     

- React,ReactJS

- Session management

- JDBC, JPA,SQL

- RESTful WebServices and APIs

b. Have 6 years’ experience, in coding programs using each of the skills:

• Frontend and Enterprise Technologies

- HTML 5

- XHTML

- AJAX

- JSON

- Java ServerFaces

- Enterprise JavaBeans (EJB)

▪ Session

▪ Entity & Message

▪ Service Locator

▪ Business Delegate

▪ Data Transfer Object (DTO)

▪ Data Access Object (DAO)

c. Preferably have hands on experience on the following:

• Development Tools and Frameworks

- IDE proficiency (IBM RAD9.0+, Eclipse,or equivalent)

- Spring Boot

- Modern Frontend Frameworks (React, Angular)

- Testing (JUnit, Testing Frameworks)

- Version Control (e.g. Git, BitBucket)

• Architecture and Security

- Portal and Portlet Development

- n-Tier Architecture

- Java Web Security/LDAP

- JEE Security

- JEE Transaction

- XML

- Web Services (SOAP)

- JNDI

- UML Diagrams

- Secure Coding Practices

▪ Prevention of XSS, SQL Injection,Command Injection

▪ Race Condition Handling

▪ Proper Error/Exception Management

• Core Competencies

- Problem-solving and analytical thinking

- Clean code practices and design patterns

- Performance optimization and debugging

- Security best practices

- Code review expertise

- Documentation skills

RESPONSIBILITIES:

The Programmers shall be required to do the following:

1. Development

▪ Code new features and maintain existing systems

▪ Follow coding standards and conventions

▪ Implement secure coding practices

2. Testing and Quality Assurance

▪ Prepare test data and documentation

▪ Set up testing and production environments

▪ Perform thorough testing (e.g. unit, modular and functional, etc) and debugging

▪ Conduct thorough testing with interfacing systems and stakeholders

3. Documentation and Standards

▪ Maintain system and program documentation

▪ Follow group standards and procedures

▪ Establish file structures and processing logic

4. Project Support

▪ Assist Project Leaders, and/or delegated officers, in the study and design of application systems and work coordination; support project management activities; and Provide end-user training and support

5. Professional Development

▪ Learn new programming skills as required

▪ Train other contract programmers

▪ Participate in disaster recovery exercises

6. Additional Duties

▪ Troubleshoot production issues

▪ Support system maintenance

▪ Execute other related tasks as assigned by the supervisors

REQUIREMENTS:

-         6 years' post graduate experience working with Personal computers or compatibles;

-         6 years' post graduate experience using MS OS such as Windows 11 or higher and Microsoft Outlook;

-         Able to conduct unit, module, functional and volume testing; to analyze test results and to take corrective action.

a. Have 6 years’ experience, in each of the programming skills:

• Core Java Technologies

- JSP

- Servlet

- Java Bean     

- React,ReactJS

- Session management

- JDBC, JPA,SQL

- RESTful WebServices and APIs

b. Have 6 years’ experience, in coding programs using each of the skills:

• Frontend and Enterprise Technologies

- HTML 5

- XHTML

- AJAX

- JSON

- Java ServerFaces

- Enterprise JavaBeans (EJB)

▪ Session

▪ Entity & Message

▪ Service Locator

▪ Business Delegate

▪ Data Transfer Object (DTO)

▪ Data Access Object (DAO)

c. Preferably have hands on experience on the following:

• Development Tools and Frameworks

- IDE proficiency (IBM RAD9.0+, Eclipse, or equivalent)

- Spring Boot

- Modern Frontend Frameworks (React,Angular)

- Testing (JUnit, Testing Frameworks)

- Version Control (e.g. Git, BitBucket)

• Architecture and Security

- Portal and Portlet Development

- n-Tier Architecture

- Java Web Security/LDAP

- JEE Security

- JEE Transaction

- XML

- Web Services (SOAP)

- JNDI

- UML Diagrams

- Secure Coding Practices

▪ Prevention of XSS, SQL Injection, Command Injection

▪ Race Condition Handling

▪ Proper Error/Exception Management

• Core Competencies

- Problem-solving and analytical thinking

- Clean code practices and design patterns

- Performance optimization and debugging

- Security best practices

- Code review expertise

- Documentation skills

RESPONSIBILITIES:

The Programmers shall be required to do the following:

1. Development

▪ Code new features and maintain existing systems

▪ Follow coding standards and conventions

▪ Implement secure coding practices

2. Testing and Quality Assurance

▪ Prepare test data and documentation

▪ Set up testing and production environments

▪ Perform thorough testing (e.g. unit, modular and functional, etc) and debugging

▪ Conduct thorough testing with interfacing systems and stakeholders

3. Documentation and Standards

▪ Maintain system and program documentation

▪ Follow group standards and procedures

▪ Establish file structures and processing logic

4. Project Support

▪ Assist Project Leaders, and/or delegated officers, in the study and design of application systems and work coordination; support project management activities; and Provide end-user training and support

5. Professional Development

▪ Learn new programming skills as required

▪ Train other contract programmers

▪ Participate in disaster recovery exercises

6. Additional Duties

▪ Troubleshoot production issues

▪ Support system maintenance

▪ Execute other related tasks as assigned by the supervisors

• At least 10 years of development experience using Java/J2EE, BPM, Spring, Spring Boot, and Angular
• Hands on experience in designing and developing applications using Java EE platforms
• Object oriented analysis and design using common design patterns.
• Profound insight of Java and JEE internals
• Experience in developing web applications using Struts, Spring MVC, EJB, Angular, Servlet, EJB, JSP, Ajax, JQuery, XML, HTML, CSS, and JavaScript
• Excellent knowledge of Relational Databases, PL/SQL. Experience in Oracle preferred.
• Excellent knowledge of ORM technologies (Toplink/Hibernate)
• Sound knowledge in Cloud Platforms (AWS, Azure & GCP)
• Experience in Trading applications with FIX protocol and Banking domain.
• Interact with product owner and business to understand new requirements and demo changes iteratively.
• Participate in solution design and collaborate with team for code reviews and design
• Develop components for highly customizable user interface that supports multiple products.
• Ensure a smooth transition to the Support team when a project is delivered to production, training and assist with investigations of production issues.

Role Interaction Points

• Interacts with the Technical Lead, BAs and testers for the project during the project lifecycle
• Interacts with the Client managers for status review meetings
• Ability to work on multiple tasks concurrently

Others

• Should possess good communication and problem solving skills
• Should have Aptitude and Attitude of learning and mastering new technologies and tools
• Working in client facing environment is a plus
• Working in Agile Methodology is a plus

Job Summary

Develop and optimize Java-based applications using Core Java 8+, Spring Boot, and related technologies. Collaborate on messaging systems, database management, and web services to deliver efficient, scalable software solutions.

Responsibilities

• Develop and maintain applications using Core Java 8+ and JUnit to ensure robust, tested code
• Implement and optimize messaging solutions using Kafka, Java Messaging Service (JMS), and MQ for reliable data exchange
• Design and build REST and SOAP web services to support integration and interoperability
• Apply Spring Boot and Spring core concepts to develop scalable backend services
• Manage build processes using Maven for consistent and efficient project compilation
• Write and optimize SQL queries, including joins, indexes, and triggers, to improve database performance, RTPM
• Utilize relational database concepts to design and maintain data structures
• Perform SQL query optimization to enhance application responsiveness
• Use Linux shell scripting commands to automate routine tasks and support development workflows
• Employ development tools such as IntelliJ, Git, and SonarQube/SonarLint to maintain code quality and version control

Preferred competencies and qualifications

• Operate application servers such as JBOSS to deploy and manage Java applications
• Develop user interfaces using Java Server Faces (JSF) and manage persistence with JPA and EJB
• Write and interpret complex SQL queries to support advanced data operations
• Work with Kafka for event streaming and messaging
• Develop front-end components using React JS to enhance user experience

Job Summary

Develop and optimize Java-based applications using Core Java, Spring Boot, and related technologies to deliver robust software solutions. Collaborate on database management, messaging systems, and web services to enhance application performance and reliability.

Responsibilities

• Develop and maintain applications using Core Java 8+ and JUnit to ensure high-quality code and automated testing
• Implement and optimize messaging solutions using Kafka and Java Messaging concepts (JMS, MQ, RTPM) for reliable data exchange
• Design and build backend services with Spring Boot and apply Spring core concepts to support scalable applications
• Manage project builds and dependencies using Maven to streamline development workflows
• Write and optimize SQL queries, including joins, indexes, and triggers, to improve database performance and data retrieval
• Utilize relational database concepts to design efficient data models and support application requirements
• Develop and consume REST and SOAP web services to enable integration with external systems
• Apply basic Linux shell scripting commands to automate routine tasks and support development environments
• Use development tools such as IntelliJ, Git, and SonarQube/SonarLint to maintain code quality and version control

Preferred competencies and qualifications

• Knowledge of JBOSS or other application servers to support deployment and runtime environments
• Experience with Java Server Faces, JPA, and EJB to develop rich user interfaces and manage persistence
• Ability to write and understand complex SQL queries for advanced data manipulation
• Familiarity with Kafka for event streaming and messaging beyond core usage
• Exposure to React JS for front-end development to complement backend services

•Core Java 8+ and JUnit.

• Kafka, Oracle

• Spring Boot

• Maven

• Basic Linux shell scripting commands

• Java Messaging Concepts. (JMS, MQ), RTPM

• Relational Database concepts, SQL, joins, index, triggers etc.

• Web Services Rest, SOAP.

• Spring core concepts.

• Experience in SQL queries optimisation

• Familiarity with Intellij, Git, SonarQube/SonarLint

Secondary Skills (Good to Have)
•JBOSS (or any other application server knowledge).

• Java Server Faces, JPA, EJB knowledge.

• Able to write/understand complex SQL queries.

• Kafka

• React JS

Job Summary

This role requires expertise in Java development and related technologies to design, develop, and optimize software solutions that meet business needs and improve system performance.

Responsibilities

• Develop and maintain applications using Core Java 8+ and JUnit to ensure robust and testable code
• Implement messaging solutions using Java Messaging Concepts (JMS, MQ) and RTPM to enable reliable communication between systems
• Design and optimize SQL queries and relational database structures including joins, indexes, and triggers to improve data retrieval efficiency
• Build and consume Web Services using REST and SOAP protocols to integrate with external and internal systems
• Apply Spring Boot and Spring core concepts to develop scalable and maintainable backend services
• Use Maven for project build and dependency management to streamline development workflows
• Execute basic Linux shell scripting commands to automate routine tasks and support deployment processes
• Utilize development tools such as IntelliJ, Git, and SonarQube/SonarLint to enhance code quality and version control

Preferred competencies and qualifications

• Manage application deployment and configuration using JBOSS or other application servers to support production environments
• Develop user interfaces and persistence layers using Java Server Faces, JPA, and EJB to enhance application functionality
• Write and interpret complex SQL queries to support advanced data operations
• Work with Kafka for distributed event streaming to support real-time data processing
• Use React JS to build responsive front-end components for improved user experience

• At least 6 years of development experience using Java/J2EE, BPM, Spring, Spring Boot, and Angular
• Hands on experience in designing and developing applications using Java EE platforms
• Object oriented analysis and design using common design patterns.
• Profound insight of Java and JEE internals
• Experience in developing web applications using Struts, Spring MVC, EJB, Angular, Servlet, EJB, JSP, Ajax, JQuery, XML, HTML, CSS, and JavaScript
• Excellent knowledge of Relational Databases, PL/SQL. Experience in Oracle preferred.
• Excellent knowledge of ORM technologies (Toplink/Hibernate)
• Sound knowledge in Cloud Platforms (AWS, Azure & GCP)
• Experience in Trading applications with FIX protocol and Banking domain.
• Interact with product owner and business to understand new requirements and demo changes iteratively.
• Participate in solution design and collaborate with team for code reviews and design
• Develop components for highly customizable user interface that supports multiple products.
• Ensure a smooth transition to the Support team when a project is delivered to production, training and assist with investigations of production issues.

Role Interaction Points

• Interacts with the Technical Lead, BAs and testers for the project during the project lifecycle
• Interacts with the Client managers for status review meetings
• Ability to work on multiple tasks concurrently

Others

• Should possess good communication and problem solving skills
• Should have Aptitude and Attitude of learning and mastering new technologies and tools
• Working in client facing environment is a plus
• Working in Agile Methodology is a plus

•Core Java 8+ and JUnit.

• Kafka, Oracle

• Spring Boot

• Maven

• Basic Linux shell scripting commands

• Java Messaging Concepts. (JMS, MQ),RTPM

• Relational Database concepts, SQL, joins, index, triggers etc.

• Web Services Rest, SOAP.

• Spring core concepts.

• Experience in SQL queries optimisation

• Familiarity with Intellij, Git, SonarQube/SonarLint

Secondary Skills (Good to Have)
•JBOSS (or any other application server knowledge).

• Java Server Faces, JPA, EJB knowledge.

• Able to write/understand complex SQL queries.

• Kafka

• React JS

Job Summary

Develop and optimize Java-based applications using Core Java 8+, Spring Boot, and related technologies. Collaborate on messaging systems, database management, and web services to deliver efficient, scalable software solutions.

Responsibilities

• Develop and maintain applications using Core Java 8+ and JUnit to ensure robust, tested code
• Implement and optimize messaging solutions using Kafka, Java Messaging Service (JMS), and MQ for reliable data exchange
• Design and build REST and SOAP web services to support integration and interoperability
• Apply Spring Boot and Spring core concepts to develop scalable backend services
• Manage build processes using Maven for consistent and efficient project compilation
• Write and optimize SQL queries, including joins, indexes, and triggers, to improve database performance, RTPM
• Utilize relational database concepts to design and maintain data structures
• Perform SQL query optimization to enhance application responsiveness
• Use Linux shell scripting commands to automate routine tasks and support development workflows
• Employ development tools such as IntelliJ, Git, and SonarQube/SonarLint to maintain code quality and version control

Preferred competencies and qualifications

• Operate application servers such as JBOSS to deploy and manage Java applications
• Develop user interfaces using Java Server Faces (JSF) and manage persistence with JPA and EJB
• Write and interpret complex SQL queries to support advanced data operations
• Work with Kafka for event streaming and messaging
• Develop front-end components using React JS to enhance user experience

•Core Java 8+ and JUnit.

• Kafka, Oracle

• Spring Boot

• Maven

• Basic Linux shell scripting commands

• Java Messaging Concepts. (JMS, MQ), RTPM

• Relational Database concepts, SQL, joins, index, triggers etc.

• Web Services Rest, SOAP.

• Spring core concepts.

• Experience in SQL queries optimisation

• Familiarity with Intellij, Git, SonarQube/SonarLint

Secondary Skills (Good to Have)
•JBOSS (or any other application server knowledge).

• Java Server Faces, JPA, EJB knowledge.

• Able to write/understand complex SQL queries.

• Kafka

• React JS

Responsibilities:

• Lead the design, development, and maintenance of scalable backend systems, microservices, and RESTful APIs.
• Collaborate with product managers and frontend teams to deliver fit-for-purpose digital solutions aligned with business and IT strategy.
• Ensure backend systems are secure, reliable, and optimised for performance.
• Drive technical discussions, make architectural decisions, and review code to ensure adherence to best practices and standards.
• Act as a mentor to junior developers, fostering a culture of continuous improvement and knowledge sharing.
• Manage system integrations across internal and third-party platforms
•  Contribute to DevOps processes and CI/CD pipelines to support rapid and safe software delivery.
• Document key design decisions, system workflows, and technical specifications.
• Support production systems, troubleshoot issues, and ensure uptime and resilience.

Requirements:    

•  Bachelor’s Degreein Computer Science, Engineering, or a related field.
•  4 years of hands-on backend development experience in enterprise or cloud-native applications.
•  Proficient in Java Spring Boot.
• Solid experience with microservices architecture, RESTful APIs, and message queues (e.g.Rabbit MQ).
• Expertise in database architecture and performance tuning across SQL, NoSQL, and Caching layers (e.g., PostgreSQL, MongoDB, Redis).
• Experience working with Angular in enterprise applications

Interested applicants, please Email , and look for

Jensen Fang Lifa

Recruit Express Pte Ltd

EA License No. 99C4599

EA Personnel Registration Number: R2197080

We regret that only shortlisted candidates will be contacted.

Job Summary

Develop and optimize Java-based applications using Core Java 8+, Spring Boot, and related technologies. Collaborate on messaging systems, database management, and web services to deliver efficient, scalable software solutions.

Responsibilities

• Develop and maintain applications using Core Java 8+ and JUnit to ensure robust, tested code
• Implement and optimize messaging solutions using Kafka, Java Messaging Service (JMS), and MQ for reliable data exchange
• Design and build REST and SOAP web services to support integration and interoperability
• Apply Spring Boot and Spring core concepts to develop scalable backend services
• Manage build processes using Maven for consistent and efficient project compilation
• Write and optimize SQL queries, including joins, indexes, and triggers, to improve database performance, RTPM
• Utilize relational database concepts to design and maintain data structures
• Perform SQL query optimization to enhance application responsiveness
• Use Linux shell scripting commands to automate routine tasks and support development workflows
• Employ development tools such as IntelliJ, Git, and SonarQube/SonarLint to maintain code quality and version control

Preferred competencies and qualifications

• Operate application servers such as JBOSS to deploy and manage Java applications
• Develop user interfaces using Java Server Faces (JSF) and manage persistence with JPA and EJB
• Write and interpret complex SQL queries to support advanced data operations
• Work with Kafka for event streaming and messaging
• Develop front-end components using React JS to enhance user experience

REQUIREMENTS:

-         6 years' post graduate experience working with Personal computers or compatibles;

-         6 years' post graduate experience using MS OS such as Windows 11 or higher and Microsoft Outlook;

-         Able to conduct unit, module, functional and volume testing; to analyze test results and to take corrective action.

a. Have 6 years’ experience, in each of the programming skills:

• Core Java Technologies

- JSP

- Servlet

- Java Bean     

- React, ReactJS

- Session management

- JDBC, JPA,SQL

- RESTful Web Services and APIs

b. Have 6 years’ experience, in coding programs using each of the skills:

• Frontend and Enterprise Technologies

- HTML 5

- XHTML

- AJAX

- JSON

- Java Server Faces

- Enterprise JavaBeans (EJB)

▪ Session

▪ Entity & Message

▪ Service Locator

▪ Business Delegate

▪ Data Transfer Object (DTO)

▪ Data Access Object (DAO)

c. Preferably have hands on experience on the following:

• Development Tools and Frameworks

- IDE proficiency (IBM RAD9.0+, Eclipse,or equivalent)

- Spring Boot

- Modern Frontend Frameworks (React,Angular)

- Testing (JUnit, Testing Frameworks)

- Version Control (e.g. Git, BitBucket)

• Architecture and Security

- Portal and Portlet Development

- n-Tier Architecture

- Java Web Security/LDAP

- JEE Security

- JEE Transaction

- XML

- Web Services (SOAP)

- JNDI

- UML Diagrams

- Secure Coding Practices

▪ Prevention of XSS, SQL Injection, Command Injection

▪ Race Condition Handling

▪ Proper Error/Exception Management

• Core Competencies

- Problem-solving and analytical thinking

- Clean code practices and design patterns

- Performance optimization and debugging

- Security best practices

- Code review expertise

- Documentation skills

RESPONSIBILITIES:

The Programmers shall be required to do the following:

1. Development

▪ Code new features and maintain existing systems

▪ Follow coding standards and conventions

▪ Implement secure coding practices

2. Testing and Quality Assurance

▪ Prepare test data and documentation

▪ Set up testing and production environments

▪ Perform thorough testing (e.g. unit, modular and functional, etc) and debugging

▪ Conduct thorough testing with interfacing systems and stakeholders

3. Documentation and Standards

▪ Maintain system and program documentation

▪ Follow group standards and procedures

▪ Establish file structures and processing logic

4. Project Support

▪ Assist Project Leaders, and/or delegated officers, in the study and design of application systems and work coordination; support project management activities; and Provide end-user training and support

5. Professional Development

▪ Learn new programming skills as required

▪ Train other contract programmers

▪ Participate in disaster recovery exercises

6. Additional Duties

▪ Troubleshoot production issues

▪ Support system maintenance

▪ Execute other related tasks as assigned by the supervisors