AS400 Programmer

AS400 RPG Developer

Location: Near Hicksville, NY
Salary Range: $85,000 â€" $110,000 annually
Employment Type: Full-Time

Help Modernize Critical Business Systems While Supporting a Proven Enterprise Platform

Our growing client is seeking a skilled AS400 RPG Developer to support, enhance, and modernize mission-critical business applications running on the IBM iSeries (AS/400) platform. This role offers the opportunity to work within a complex enterprise environment that combines established RPG-based systems with modern Java applications, APIs, and integration technologies.

The ideal candidate is comfortable maintaining legacy business applications while also contributing to modernization initiatives that connect traditional systems with today's enterprise technologies.

Position Overview

As an AS400 RPG Developer, you will be responsible for developing, maintaining, troubleshooting, and enhancing core business applications that support day-to-day operations. You'll work across both legacy and modern technologies, helping bridge IBM iSeries environments with web services, APIs, and enterprise integration solutions.

This position is ideal for someone who enjoys solving complex technical challenges, improving existing systems, and working directly with business users to deliver practical technology solutions.

Key Responsibilities

IBM iSeries / AS400 Development

• Design, develop, test, and deploy business applications on the IBM i (AS/400) platform
• Maintain and enhance existing applications utilizing:
  • RPG IV
  • RPGLE
  • Free-Form RPG
  • RPG III
  • CL and CLLE
• Analyze existing programs and implement enhancements, bug fixes, and performance improvements
• Troubleshoot production issues and provide timely resolution

Java Development & Integration

• Develop and maintain Java-based applications and integration tools
• Build and support connectors that integrate legacy systems with modern platforms
• Develop solutions that facilitate communication between IBM i systems and external applications
• Support enterprise integration and data exchange initiatives

Database & Data Management

• Work extensively with DB2/400 databases
• Create, modify, and optimize queries and database processes
• Utilize IBM query tools and reporting capabilities
• Support embedded SQL development (SQLRPGLE) and database modernization efforts

API & Systems Modernization

• Design and support RESTful and SOAP web services
• Utilize the IBM Integrated File System (IFS) for secure data transfers and system integrations
• Participate in modernization projects that improve interoperability and scalability
• Support cross-platform integration and data exchange requirements

Business Analysis & Documentation

• Collaborate with business users and stakeholders to gather requirements
• Translate business needs into technical specifications and development plans
• Document system functionality, code changes, processes, and integration workflows
• Participate in code reviews and maintain development standards

Job Requirements

Required Qualifications

Technical Experience

• 3â€"6 years of hands-on AS400 / IBM i development experience
• Strong experience with:
  • RPGLE
  • Free-Form RPG
  • RPG III
  • CL/CLLE
  • DB2/400
• Experience supporting and maintaining enterprise business applications
• Ability to analyze and troubleshoot complex application issues

Java Development

• Minimum 1 year of professional Java development experience
• Strong understanding of object-oriented programming principles
• Experience working with:
  • JSON
  • XML
  • SOAP services
  • API integrations

Database & Integration Knowledge

• Experience with data exchange, web services, and integration development
• Knowledge of API design and implementation
• Familiarity with IBM IFS and data transfer processes
• SQL experience highly desirable

Preferred Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field
• Experience with embedded SQL (SQLRPGLE)
• Experience modernizing legacy applications
• Exposure to enterprise integration projects
• Knowledge of software development lifecycle best practices
• Experience working in manufacturing, distribution, logistics, or enterprise operational environments

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