OutSystems Developer

APAR TECHNOLOGIES PTE. LTD.; Singapore; On-site; SGD 60,000 - 90,000; Full time

Job summary

APAR TECHNOLOGIES PTE. LTD. in Singapore is seeking an OutSystems developer to design and deliver scalable web and mobile applications within approved architecture and coding standards.

You will translate user stories into maintainable components, build data models and business logic, and ensure robust REST/SOAP integrations while maintaining data integrity. The role requires 2–4 years of OutSystems delivery experience, strong SQL, familiarity with Azure DevOps or Jira, and solid communication

Qualifications

• Diploma or Bachelor's degree in Computer Science, Information Systems, Software Engineering or a related discipline.
• 2–4 years of professional software development experience on the OutSystems platform.
• Hands-on experience with OutSystems Service Studio across UI, logic, data, integrations, security and deployment.
• Strong SQL knowledge and relational database concepts; query optimisation.
• Experience with REST APIs, JSON, authentication patterns; SOAP is a plus.
• Proficient front-end basics: HTML, CSS, JavaScript; version control with Git or similar.
• Experience with Azure DevOps or Jira in Agile environments.
• Excellent problem-solving, communication and documentation skills.

Responsibilities

• Develop and enhance responsive web and mobile applications using OutSystems, following architecture and standards.
• Translate user stories and wireframes into maintainable components.
• Build interfaces, data models, business logic, validations and access controls.
• Design, consume and troubleshoot REST and SOAP integrations.
• Write and optimise SQL queries and data access logic.
• Perform unit testing, support SIT and UAT, and resolve defects within sprints.
• Participate in peer reviews and address code quality and security findings.
• Support deployment activities and post-release validation.
• Investigate incidents and perform root-cause analysis with clear documentation.
• Contribute to sprint planning and continuous improvement.

Skills

OutSystems

Reactive Web

SQL

REST APIs

Git/Jira

Agile

Problem-solving

Communication

Documentation

Education

Diploma or Bachelor in CS/IS/SE

Tools

Service Studio

Azure DevOps

Job description

Key Responsibilities

• Develop and enhance responsive web and mobile applications using OutSystems, following the approved architecture, coding standards and reusable design patterns.
• Translate user stories, process flows, wireframes and functional specifications into maintainable application components.
• Build user interfaces, data models, business logic, validations, role-based access controls, timers and background processes.
• Design, consume and troubleshoot REST and SOAP integrations with enterprise systems and external services.
• Write and optimise SQL queries, aggregates and data access logic while maintaining data integrity and acceptable performance.
• Perform unit testing, support SIT and UAT, and resolve defects within agreed sprint timelines.
• Participate in peer reviews and use platform analysis tools to address code quality, security, performance and maintainability findings.
• Support deployment and environment promotion activities, including release notes, deployment checks, rollback planning and post-release validation.
• Investigate incidents and production issues, perform root-cause analysis, implement fixes and maintain clear technical documentation.
• Contribute to sprint planning, estimation, stand‑ups, demonstrations, retrospectives and continuous improvement.

Required Qualifications and Experience

• Diploma or Bachelor degree in Computer Science, Information Systems, Software Engineering or a related discipline.
• 2–4 years of professional software development experience, with hands‑on delivery on the OutSystems platform.
• Working knowledge of OutSystems Service Studio across interface, logic, data, integrations, security and deployment.
• Experience developing Reactive Web applications; exposure to mobile or Traditional Web applications is useful.
• Good knowledge of SQL and relational database concepts including entities, relationships, indexes, transactions and query optimisation.
• Experience with REST APIs, JSON, authentication patterns and error handling; SOAP integration experience is an advantage.
• Foundational front‑end skills in HTML, CSS and JavaScript for UI customisation and troubleshooting.
• Experience with Git or equivalent version control, Agile delivery practices and tools such as Azure DevOps or Jira.
• Strong problem‑solving, communication, documentation and teamwork skills.

Preferred Qualifications

• OutSystems Associate Reactive Developer, Associate Developer ODC or equivalent certification.
• Exposure to LifeTime, Service Center, AI Mentor Studio, Forge components and application monitoring.
• Experience with Microsoft Azure and the wider Microsoft application platform.
• Knowledge of CI/CD, automated testing, secure coding, IAM or single sign‑on integration.
• Experience supporting Singapore public sector, healthcare or financial services clients, including relevant security and clearance requirements.

EA Number: 11C4879