Full Stack Developer

RAPSYS TECHNOLOGIES PTE. LTD.; Singapore; On-site; SGD 90,000 - 130,000; Full time

Job summary

RAPSYS TECHNOLOGIES PTE. LTD. in Singapore seeks a hands-on software engineer to design, develop, test and deploy applications aligned with business requirements.

You will translate requirements into technical solutions, develop backend services and APIs, perform data migration and validation, and support migrations and production issues. Collaboration with analysts and stakeholders is essential, with emphasis on code quality and documentation.

Qualifications

• Experience designing and developing Java-based applications.
• Proficient SQL and Sybase database knowledge.
• Experience building APIs and system integrations.
• Experience with data migration, mapping, and validation.
• Strong troubleshooting and analytical problem-solving skills.
• Mobile app development experience for iOS and Android.

Responsibilities

• Design, develop, test, and deploy applications based on business requirements.
• Translate functional requirements into technical solutions.
• Develop backend services, APIs, workflows, forms, and system integrations.
• Perform data migration, legacy data mapping, and migration script development.
• Validate migrated data through reconciliation, testing, and quality checks.
• Support migration cutover, application enhancements, bug fixes, and production issues.
• Ensure code quality, performance, maintainability, and proper documentation.
• Collaborate with business analysts, architects, and stakeholders.
• Contribute to end-to-end delivery and continuous improvement.

Skills

Java-based application development

SQL & Sybase

API development & integration

Data migration & validation

Troubleshooting & problem-solving

Mobile app development (iOS & Android)

Job description

Key Responsibilities

• Design, develop, test, and deploy applications based on business requirements.
• Translate functional requirements into technical solutions.
• Develop backend services, APIs, workflows, forms, and system integrations.
• Perform data migration, legacy data mapping, and migration script development.
• Validate migrated data through reconciliation, testing, and quality checks.
• Support migration cutover, application enhancements, bug fixes, and production issues.
• Ensure code quality, performance, maintainability, and proper documentation.
• Collaborate with business analysts, architects, and stakeholders.
• Contribute to end-to-end delivery and continuous improvement.

Must-Have Skills

• Java-based application development.
• SQL and Sybase database knowledge.
• API development and system integration.
• Data migration, data mapping, and validation.
• Strong troubleshooting and problem-solving skills.
• Mobile application development experience for iOS and Android.

Good to Have

• Microsoft Azure or other cloud platform exposure.
• System migration or modernization experience.
• Enterprise-scale applications or public-sector project experience.
• Agile development experience.