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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # AS400 Programmer - **Company:** RED SHIFT RECRUITING LLC - **Location:** Melville, NY, United States - **Experience:** Experienced - **Salary:** $85,000.0 - $110,000.0 - **Contract:** Permanent contract - **Skills:** Db2400, Java (Programming Language), Application Integration Architecture, IBM System I, Business Software, Software Documentation, Code Review, Databases, File Systems, Electronic Data Interchange (EDI), IBM RPG (Programming Language), JSON, Object-Oriented Software Development, Simple Object Access Protocol (SOAP), Web Services, Extensible Markup Language (XML), Java Application Server, Software Troubleshooting, SOAPAPI, Control Language, Information Technology, Api Design, Restful APIs, Api Management, Legacy Systems - **Published:** June 17, 2026 - **Apply:** https://www.indeed.com/viewjob?jk=6251c46bb8e2e481 ## About the Role Experience: 3-6 years of AS400 / RPG development experience required Skills: Java development experience required Education: Bachelor's degree preferred; equivalent experience will be accepted, * Bachelor's degree in Computer Science, Information Technology, or related field preferred * Equivalent professional experience may be considered in lieu of a degree * 3-6 years of hands-on AS400 / IBM iSeries development experience required * Strong experience with RPGLE, RPG IV, free-form RPG, RPG III, CL, and CLLE * Experience working with DB2/400 databases * Minimum of 1 year of professional Java development experience required * Experience with object-oriented programming concepts and application integration * Familiarity with JSON, XML, SOAP, RESTful APIs, and web services preferred * Experience utilizing the Integrated File System (IFS) for data exchange activities preferred * Strong troubleshooting, analytical, and problem-solving abilities * Ability to understand and support complex legacy applications and undocumented code * Excellent communication and collaboration skills, * RPG Developer * IBM i Developer * RPGLE Developer * AS400 Developer * IBM iSeries Programmer * Mid-Level RPG Developer * Legacy Systems Developer * Java RPG Developer * Application Programmer Keywords * AS400 * IBM iSeries * RPGLE * RPG IV * RPG III * Free Form RPG * CLLE * CL Programming * DB2/400 * Java * API Development * REST * SOAP * JSON * XML * IFS * Legacy Systems, * Bachelor's (Preferred) Experience: * hands-on AS400 / IBM iSeries development: 3 years (Required) * professional Java development: 1 year (Required) ## Description Our client in the Melville, NY area is seeking an experienced AS400 Programmer to support and enhance critical business applications within a complex IBM iSeries (AS/400) environment. This is an excellent opportunity for a developer who enjoys working with both legacy and modern technologies, combining RPG development expertise with Java integration and modernization initiatives., * Design, develop, test, and maintain business applications on the IBM iSeries (AS/400) platform * Support development efforts utilizing RPG IV, RPGLE, free-form RPG, RPG III, CL, and CLLE * Develop and maintain Java applications and integration components that connect legacy systems with modern technologies * Create and support API integrations, web services, and data exchange processes * Work with DB2/400 databases and support reporting and query activities * Troubleshoot software issues and resolve production support requests * Analyze existing applications and optimize code for performance, stability, and maintainability * Collaborate with business users and stakeholders to gather requirements and develop technical solutions * Support modernization efforts involving RESTful services, SOAP services, JSON, XML, and related technologies * Maintain technical documentation and participate in code reviews and best practice initiatives * Ensure compliance with company security, development, and documentation standards ## Related Videos - [Building with IBM Bob](https://www.wearedevelopers.com/videos/100275-building-with-ibm-bob) - [Tips and Tricks for Working with JSON](https://www.wearedevelopers.com/videos/1229-tips-and-tricks-for-working-with-json) - [Can This Elephant Dance? 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