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NTT DATA Logo NTT DATA · IT - Software Development

iSeries AS/400 Developer

Brazil, São Paulo · Job Posted January 26, 2026
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Job Description

The iSeries AS/400 Developer role requires an experienced professional with strong skills in CLLE, RPGLE, and SQL to enhance and modernize IBM i-based applications. Candidates should have a solid understanding of the iSeries ecosystem and be able to work on both new development and legacy system maintenance.

Job Responsibility

  • Design, develop, test, and maintain applications on the iSeries/AS400 platform
  • Write, debug, and optimize programs using CLLE, RPGLE (free and fixed form), and SQL
  • Analyze business requirements and translate them into technical specifications and solutions
  • Maintain and enhance existing applications, ensuring stability, scalability, and performance
  • Collaborate with cross-functional teams to troubleshoot and resolve application issues
  • Perform data analysis, data manipulation, and design of SQL queries, views, and stored procedures
  • Participate in code reviews, technical discussions, and architecture improvements
  • Support production deployments and provide on-call assistance as needed
  • Document technical designs, processes, and system configurations

Requirements

  • 3–7+ years of hands-on development experience on IBM i / AS400 / iSeries systems
  • Strong command of CLLE and RPGLE (including modern free-form RPG)
  • Proficiency with SQL on IBM i (DDL, DML, performance tuning, query optimization)
  • Solid understanding of iSeries/AS400 system fundamentals, job queues, file structures, and libraries
  • Ability to read, analyze, and modify existing codebases
  • Strong problem-solving abilities and attention to detail
  • Effective communication skills and ability to work independently as well as in a team
  • A bachelor's degree in Computer Science or a related field is preferred

Nice to have

  • GMI application experience or exposure (highly beneficial)
  • Familiarity with modern IBM i tools, APIs, or integration technologies
  • Experience working in Agile or hybrid development environments
  • Knowledge of change management tools (e.g., Turnover, Aldon, Jira, or similar)
  • Experience with modernization initiatives within iSeries environments
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