Mobile Application Developer

About the role

We are looking for a Mobile Application Developer to lead the design, development and delivery of secure, high‑performance mobile solutions that power Singapore’s digital payment ecosystem. The role involves full‑stack ownership from concept through production, ensuring seamless integration with multiple partners.

Key responsibilities

• Own end‑to-end delivery of mobile applications, including development, integration, testing and production deployment.
• Design and enhance user‑experience (UX) components to onboard diverse partners.
• Implement secure integration patterns for frontend‑to‑server and server‑to‑server communication.
• Apply secure‑by‑default development practices such as secrets management, vulnerability management and threat modelling.
• Build and maintain automated quality controls: unit tests, API contract tests, integration tests, CI/CD quality gates and Terraform deployment scripts.
• Monitor production, troubleshoot incidents, perform root‑cause analysis and contribute to runbooks and SLAs.
• Collaborate proactively with cross‑functional teams to identify and mitigate risks.
• Perform other software‑engineering duties as required.

Required profile

• Degree in Computer Science, Information Systems, Engineering or a related field.
• Minimum 8 years of hands‑on experience developing production‑grade iOS and Android applications.
• Strong communication skills and ability to work effectively with cross‑functional teams.

Required skills

• iOS development with Swift, including WebView bridging.
• Android development with Kotlin and Java.
• Experience with AWS services (API Gateway, ALB, ECS/Fargate, RDS, S3, CloudWatch, CloudTrail, WAF).
• CI/CD pipelines using Jenkins, Bitbucket and Terraform.
• API security patterns: HMAC signing, authentication, nonce/timestamp anti‑replay, idempotency and secure secret handling.
• Automated testing: unit, API contract and integration tests.
• Knowledge of open‑source libraries, vulnerability assessment and secure development practices.