Software Developer (Java)

A-IT INVESTMENT PTE. LTD.; Singapore; On-site; SGD 90,000 - 170,000; Full time

Job summary

A-IT INVESTMENT PTE. LTD. is seeking an experienced Java developer in Singapore to design, implement and maintain enterprise web applications.

The role requires deep expertise in Core Java, JSP/Servlets, React, and EJB-based patterns, with strong testing and secure coding practices. The candidate should be proficient in frontend and enterprise technologies, including HTML5/XHTML, AJAX, JSON, and modern frameworks, and be capable of contributing to architecture and security discussions while

Qualifications

• Six years’ postgraduate experience with personal computers, MS OS (Windows 11 or higher) and Outlook.
• Six years’ experience in Core Java technologies, JSP, Servlet, JavaBean, React and related web tech.
• Hands-on experience with frontend/enterprise tech including HTML5, XHTML, AJAX, JSON, JSF and EJB patterns.
• Preferably hands-on in IDEs (RAD/Eclipse), Spring Boot, modern frontend frameworks, testing and version control.

Responsibilities

• Develop code features and maintain existing systems following standards.
• Perform unit, modular and functional testing; help analyze results and fix defects.
• Create and maintain system documentation and support project coordination.
• Assist in disaster recovery exercises and knowledge transfer.

Skills

Core Java

JSP

Servlet

Java Bean

React

Session management

JDBC

JPA

SQL

RESTful WebServices

Frontend & Enterprise Tech

HTML5

XHTML

AJAX

JSON

JavaServerFaces

EJB (Session)

EJB (Entity/Message)

EJB (Service Locator)

EJB (Business Delegate)

DTO

DAO

IDE proficiency

Spring Boot

React/Angular

JUnit

Git/Bitbucket

Tools

IBM RAD9.0+

Eclipse

Spring Boot

React

Angular

JUnit

Git

Bitbucket

Job description

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