Senior Life400 Developer — RPG/DB2 & i/AS400 Expert

Hong Kong Unison Limited; Singapore; On-site; SGD 120,000 - 180,000; Full time

Job summary

Hong Kong Unison Limited in Singapore seeks an experienced Life400 Developer to design, develop, maintain, and support enterprise applications within the IBM i / AS400 environment. The ideal candidate has strong RPG development, system integration, and business process enhancement capabilities.

You will collaborate with business stakeholders and IT teams to deliver reliable, scalable solutions, participate in system modernization, data migration, and production support, and ensure security and

Qualifications

• 8+ years of experience in IBM i / AS400 environments.
• Proficiency in Life400 development and support.
• Strong RPG, RPGLE, CL/CLLE, SQL, and DB2/400 skills.

Responsibilities

• Design, develop, test, and maintain applications in the Life400 / AS400 environment.
• Analyse business requirements and translate them into technical solutions.
• Develop and support RPG, RPGLE, CL, SQL, and DB2-based applications.
• Perform system enhancements, debugging, troubleshooting, and performance optimisation.
• Collaborate with business users, analysts, and cross-functional teams to support ongoing operational needs.
• Participate in system integration, data migration, and application modernisation initiatives.
• Ensure application reliability, security, and compliance with organisational standards.
• Prepare technical documentation, design specifications, and support manuals.
• Support production deployments, issue resolution, and post-implementation activities.
• Contribute to continuous improvement initiatives and process optimisation.

Skills

Analytical and problem-solving

Stakeholder collaboration

Independent and team work

Excellent communication

Education

Bachelor’s degree in Computer Science/IT or related field

Tools

Life400 development

RPG

RPGLE

CL/CLLE

SQL

DB2/400

AS400 integration

Job description

Hong Kong Unison Limited in Singapore seeks an experienced Life400 Developer to design, develop, maintain, and support enterprise applications within the IBM i / AS400 environment. The ideal candidate has strong RPG development, system integration, and business process enhancement capabilities.

You will collaborate with business stakeholders and IT teams to deliver reliable, scalable solutions, participate in system modernization, data migration, and production support, and ensure security and