AS400 Developer

United States Digital Space LLC; Singapore; On-site; SGD 90,000 - 140,000; Full time

Job summary

United States Digital Space LLC is seeking a skilled AS400 Developer with strong experience in RPG, COBOL, and IBM i (AS400) systems to develop, maintain, and enhance legacy applications.

You will analyze requirements, design and test programs, work with CLP/CLLE, DB2/400, and support system upgrades while ensuring reliability and timely resolutions.

Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Strong hands-on experience in RPG (RPG III, RPG IV, ILE RPG).
• Strong hands-on experience in COBOL on AS400.
• Experience with IBM i / AS400 systems.

Responsibilities

• Develop, maintain, and enhance applications on AS400 (IBM i) platform.
• Analyze business requirements and translate them into technical solutions.
• Design, code, test, and debug programs using RPG (RPG III / IV / ILE RPG) and COBOL.
• Work with CLP/CLLE programs, DB2/400 database, and related utilities.
• Perform code reviews and ensure adherence to development standards.
• Troubleshoot production issues and provide timely resolutions.
• Collaborate with cross-functional teams including Business Analysts and QA teams.
• Participate in system upgrades, performance tuning, and optimization activities.
• Maintain documentation for applications, processes, and enhancements.

Skills

RPG (ILE)

COBOL on AS400

IBM i / AS400

CL/CLLE

DB2/400

File handling

Batch/Online processing

Debugging IBM i

Legacy modernization

Communication

Education

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

Job description

Job Summary

We are seeking a skilled AS400 Developer with strong experience in RPG, COBOL, and IBM i (AS400) systems. The ideal candidate will be responsible for developing, maintaining, and enhancing legacy applications, ensuring system reliability, and supporting business-critical operations.

Key Responsibilities

• Develop, maintain, and enhance applications on AS400 (IBM i) platform.
• Analyze business requirements and translate them into technical solutions.
• Design, code, test, and debug programs using RPG (RPG III / IV / ILE RPG) and COBOL.
• Work with CLP/CLLE programs, DB2/400 database, and related utilities.
• Perform code reviews and ensure adherence to development standards.
• Troubleshoot production issues and provide timely resolutions.
• Collaborate with cross-functional teams including Business Analysts and QA teams.
• Participate in system upgrades, performance tuning, and optimization activities.
• Maintain documentation for applications, processes, and enhancements.

Required Skills & Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or a related field.
• Strong hands-on experience in:
• RPG (RPG III, RPG IV, ILE RPG)
• COBOL on AS400
• IBM i / AS400 System

Experience with

• CL/CLLE programming
• DB2/400 (DB2 for i)
• File handling (Physical & Logical files)
• Good understanding of batch and online processing.
• Familiarity with debugging tools and job logs on IBM i.
• Ability to work on legacy system modernization and enhancements.
• Strong analytical, problem-solving, and communication skills.

Preferred Skills

• Experience with ILE concepts, service programs, and APIs.
• Knowledge of SQL on DB2/400.
• Exposure to system integration and web services.
• Experience in domains such as Banking, Insurance, or Manufacturing (optional).
• Familiarity with modern tools for AS400 modernization is a plus.

Experience Required

Typically 8–15 years of relevant experience in AS400 development (customize as needed).