Senior Java Developer (iSeries)

Senior Java Developer (iSeries) 

PLEASE DON'T SUBMIT IF YOU DON'T HAVE iSeries Exp .

Senior iSeries Java Developer   Remote Contract Opportunity

Position Overview

We are looking for a highly skilled Senior iSeries Developer with strong expertise in Java technologies and hands-on experience working within the IBM iSeries (AS/400) environment. This opportunity is part of a managed services engagement supporting a large enterprise customer. The selected candidate will contribute to the enhancement, support, modernization, and maintenance of critical business applications hosted on iSeries platforms.

The ideal professional should possess solid Java development experience, strong analytical capabilities, and the ability to work closely with technical and business teams to deliver reliable enterprise solutions.

This is a remote contract role with an initial duration of 6+ months and a strong possibility of extension.

Key Responsibilities

• Build, enhance, test, and implement Java-based applications on the IBM iSeries (AS/400) platform, including APIs, web services, and batch jobs

• Investigate, diagnose, and resolve issues affecting Java and legacy applications while meeting SLA requirements

• Create and maintain integrations between iSeries systems and third-party platforms using REST/SOAP services, MQ, JDBC, and JT400/JTOpen connectivity

• Partner with business analysts and client teams to convert business requirements into technical solutions and design documentation

• Conduct peer code reviews, maintain development standards, and contribute to technical documentation and internal knowledge repositories

• Optimize and support DB2 for i databases, including SQL performance tuning, stored procedures, and logical/physical data design

• Participate in Agile development activities such as sprint planning, daily stand-ups, retrospectives, and estimation sessions

• Recommend and implement process improvements, automation initiatives, and technical debt remediation efforts within the managed services environment

Required Qualifications

• Bachelor s degree in Computer Science, Information Technology, or related discipline (or equivalent industry experience)

• Minimum 7 years of software development experience, including at least 4 years working with Java applications integrated with or developed on IBM iSeries (AS/400)

• Strong experience in Java SE/EE development with frameworks such as Spring, Spring Boot, or similar technologies

• Hands-on knowledge of IBM iSeries components including DB2 for i and IFS (Integrated File System)

• Experience using JT400/JTOpen libraries for Java and iSeries communication

• Strong understanding of relational database concepts and advanced SQL development within DB2 for i

• Experience developing and consuming web services including REST APIs, SOAP services, JSON, and XML processing

• Familiarity with source control systems such as Git, Implementer, and CI/CD deployment processes

• Proven experience working in managed services or outsourced support environments with SLA-driven delivery and change management procedures

• Strong troubleshooting, analytical thinking, communication, and problem-solving abilities

Preferred Qualifications

• ITIL Foundation certification or hands-on experience with ITSM practices including incident, problem, and change management

• Exposure to monitoring and logging platforms such as Splunk, Dynatrace, or equivalent tools

• Industry experience in logistics or supply chain environments is an added advantage

• Experience working with Jenkins for build and deployment automation