Software Developer

APBA TG HUMAN RESOURCE PTE. LTD.; Singapore; On-site; SGD 70,000 - 90,000; Full time

Job summary

A human resources consulting firm in Singapore is seeking an experienced professional to design and maintain IAM microservices, with a focus on migrating authentication systems to OpenShift. The role involves enhancing secure RESTful APIs, implementing mobile-based Multi-Factor Authentication (MFA), and collaborating with various DevOps teams across regions. Candidates should have strong expertise in Java, Spring Boot, and cloud technologies. A commitment to system performance monitoring and incident management is essential.

Qualifications

• Experience in designing and maintaining IAM and authentication microservices.
• Proficiency with tools for performance monitoring and incident management.
• Background in cloud-native transformation and microservices architecture.

Responsibilities

• Design and maintain IAM microservices.
• Lead migration of authentication systems to OpenShift.
• Enhance secure RESTful APIs and implement MFA.

Skills

Java

Spring Boot

Spring Security

RESTful APIs

OAuth2

Multi-Factor Authentication (MFA)

Grafana

Jenkins

JMeter

Microservices Architecture

Tools

Docker

OpenShift (OCP)

Bitbucket

Elastic Stack (ELK)

MariaDB

Job description

Key Responsibility

• Design, develop, and maintainIAM and authentication microservices usingJava, Spring Boot, and Spring Security.
• Work onv-Key authentication system migration fromJBoss to OpenShift (OCP), including containerization, deployment strategies, and environment stabilization.
• Develop and enhancesecure RESTful APIs for authentication, authorization, and transaction validation.
• Implement and maintainmobile-based Multi-Factor Authentication (MFA) anddynamic token generation for high-value transactions.
• Collaborate daily withDevOps, Infra, Security, and Support teams across regions (SG, HK, IN, ID).
• Monitor application health and performance usingGrafana, ELK Stack, Graylog, and alerting dashboards.
• Performload, stress, smoke, and performance testing usingJMeter to validate scalability and resilience.
• Handleproduction incidents and escalations, including deep debugging and issue resolution.
• Conductroot cause analysis (RCA) for recurring or critical IAM and authentication issues.
• Participate inchaos testing exercises to validate system fault tolerance and high availability.
• Contribute toCI/CD pipelines usingJenkins, Git, Bitbucket, ensuring smooth builds and deployments.
• Maintain technical documentation, runbooks, and knowledge articles to support operations and onboarding.

Experience Summary

• Led the end-to-end migration of DBS Bank’s v-Key authentication system from a legacy JBoss environment to OpenShift container platform, improving scalability, performance, and availability.
• Delivered enterprise-grade IAM solutions supporting secure digital banking across multiple countries.
• Successfully integrated mobile MFA and transaction-level security using v-Key technology.
• Played a key role in cloud-native transformation, microservices adoption, and infrastructure optimization.
• Acted as a technical bridge between development, operations, and security teams in a regulated banking environment.
• Ensured high system availability and resilience through monitoring, testing, and chaos engineering practices.

Technical Skill Set

Backend & Security

• Java, Spring Boot, Spring Security
• RESTful APIs, OAuth2, Token-based Authentication
• Identity & Access Management (IAM)
• Multi-Factor Authentication (MFA), v-Key Integration

Frontend

• React.js, jQuery, HTML, CSS
• UI/UX collaboration for banking applications

Cloud & DevOps

• OpenShift (OCP), Docker, Containerization
• CI/CD: Jenkins, Git, Bitbucket
• JBoss Application Server

Monitoring & Observability

• Grafana
• Elastic Stack (ELK)
• Graylog

Databases

• MariaDB

Testing & Reliability

• JMeter (Load, Stress, Performance Testing)
• Smoke & Regression Testing
• Chaos Engineering

Tools & Practices

• Microservices Architecture
• Root Cause Analysis (RCA)
• Production Support & Incident Management
• Documentation & Knowledge Sharing