Sr Java Developer

Senior Java Developer – IBM iSeries / AS400
Location: Remote
Duration: 6+ Months Contract (Possible Extension)

Position Overview

We are looking for a highly skilled Senior Java Developer with strong expertise in IBM iSeries (AS400) environments to support enterprise application development, modernization, and integration initiatives. The ideal candidate will have extensive experience building scalable Java-based solutions, integrating legacy systems, and supporting mission-critical applications in a fast-paced Agile environment.

This role requires a strong blend of backend Java development, iSeries integration knowledge, and database expertise with DB2. The candidate should be comfortable working independently, troubleshooting production issues, and collaborating with distributed technical teams.

Key Responsibilities

• Design, develop, enhance, and maintain enterprise Java applications integrated with IBM iSeries (AS400) systems
• Build and support RESTful APIs, SOAP services, batch jobs, and middleware integrations
• Develop interfaces using MQ, JDBC, JT400/JTOpen, and other integration technologies
• Troubleshoot and resolve application and production support issues within SLA timelines
• Collaborate with cross-functional teams to gather technical requirements and deliver scalable solutions
• Participate in system analysis, code reviews, testing, and deployment activities
• Optimize SQL queries, stored procedures, and database performance in DB2 environments
• Contribute to CI/CD processes, version control practices, and release management activities
• Support Agile development lifecycle including sprint planning, estimations, standups, and retrospectives
• Recommend process improvements, automation opportunities, and modernization strategies

Required Qualifications

• Bachelor’s degree in Computer Science, Information Technology, or related field
• 7+ years of software development experience
• 4+ years of hands-on experience working with IBM iSeries / AS400 integrated applications
• Strong expertise in Java SE/EE and frameworks such as Spring and Spring Boot
• Experience with IBM i technologies including DB2 for i and Integrated File System (IFS)
• Hands-on experience with JT400/JTOpen toolkit
• Strong SQL development and relational database design experience using DB2
• Experience developing and consuming REST/SOAP web services
• Familiarity with Git, CI/CD pipelines, and deployment automation tools
• Strong analytical, troubleshooting, and debugging skills
• Excellent verbal and written communication skills

Preferred Skills

• Experience with IBM MQ and enterprise messaging solutions
• Knowledge of Jenkins and automated deployment pipelines
• Familiarity with Splunk, Dynatrace, or application monitoring tools
• Experience working within ITSM or ITIL-based environments
• Exposure to large-scale enterprise application support and modernization projects
• Prior experience in logistics, transportation, or supply chain environments is a plus

Work Environment

• Fully Remote Opportunity
• Long-term contract with potential extension
• Collaborative Agile team environment
• Occasional participation in production support activities as needed

Additional Notes

• Strong communication skills are mandatory
• Candidates may be required to complete a technical evaluation during the interview process
• Resumes should be concise and focused on relevant technical experience (preferred length: up to 4 pages)