Job Description

For over 17 years , Trilyon has been a leader in global workforce solutions, specializing in Cloud Technology, AI/ML, Software Development, Technical Writing, and Digital Transformation. We partner with top companies to deliver high-quality talent in engineering, IT, and emerging technologies.

For additional information or to view all of our job opportunities, please visit our website:

We are seeking an AS/400 COBOL Developer to join our team.

This role will involve developing, maintaining, enhancing, and supporting mission-critical IBM i (AS/400) applications while collaborating with modernization teams to integrate legacy systems with modern enterprise technologies. The ideal candidate will have extensive experience with AS/400 development, COBOL, RPG/RPGLE, DB2, SQL, IBM iSeries, and legacy application modernization, along with a passion for delivering reliable and scalable enterprise solutions.

Job Title: AS/400 COBOL Developer Location: San Antonio, TX (On-site) Duration: 6 Months Job Description

The AS/400 COBOL Developer will be responsible for developing, maintaining, and supporting business-critical IBM i applications. The AS/400 COBOL Developer will work closely with cross-functional teams to maintain legacy applications, troubleshoot production issues, optimize database performance, and support modernization initiatives. The AS/400 COBOL Developer will contribute to application enhancements, system integration, and continuous improvement while ensuring high-quality software delivery. The AS/400 COBOL Developer will also participate in Agile development activities and provide technical expertise for enterprise applications. The AS/400 COBOL Developer plays a critical role in maintaining and modernizing the organization's IBM i platform.

Key Responsibilities

• Develop, maintain, and support business-critical AS/400 COBOL and RPG-based applications.
• Enhance legacy IBM i applications while supporting modernization initiatives.
• Design, develop, and maintain DB2 database structures and SQL queries.
• Create and maintain data models for IBM i applications.
• Analyze, troubleshoot, and optimize SQL performance on the IBM iSeries platform.
• Debug and resolve complex batch processing and interactive application issues.
• Support business-critical production environments and perform issue resolution.
• Collaborate with cross-functional teams and modernization teams to integrate AS/400 applications with distributed enterprise systems.
• Participate in continuous integration and deployment processes within the IBM i environment.
• Follow Agile development methodologies, including Scrum and Kanban.
• Prepare technical documentation and support system enhancements.
• Utilize Microsoft Office applications and standard business productivity tools as needed.

Required Skills

• 15+ years of overall experience in AS/400 / IBM i application development (preferred based on client requirement).
• Strong experience with AS/400 development.
• Extensive experience with COBOL400.
• Strong knowledge of RPG / RPGLE.
• Strong experience with DB2 databases.
• Advanced SQL development and performance tuning.
• IBM iSeries platform expertise.
• Batch processing and interactive application troubleshooting.
• Legacy application support and maintenance.
• System integration with modern distributed applications.
• Continuous Integration / Continuous Deployment (CI/CD) experience within IBM i environments.
• Agile development methodologies (Scrum / Kanban).
• Strong analytical and debugging skills.
• Excellent problem-solving and communication skills.
• Proficiency with Microsoft Office applications.

Technical Skills

• AS/400
• IBM iSeries
• COBOL
• COBOL400
• RPG
• RPGLE
• DB2
• SQL
• IBM i Platform
• Batch Processing
• Interactive Applications
• CI/CD
• Agile
• Scrum
• Kanban

Experience Required

• 15+ years of overall IT experience (preferred).
• Strong hands-on experience with AS/400, COBOL, DB2, RPG/RPGLE, SQL, and IBM iSeries development.
• Experience integrating legacy AS/400 applications with modern enterprise systems.
• Experience supporting large-scale production environments.

Why Join Us?

• Trilyon, Inc. offers a comprehensive benefits package.
• Opportunities for growth and professional development.
• Collaborative and inclusive company culture.

Equal Employment Opportunity (EEO) Statement

Trilyon, Inc. is an Equal Opportunity Employer committed to diversity, equity, and inclusion. We do not discriminate based on race, color, religion, gender, gender identity, sexual orientation, national origin, age, disability, veteran status, or any other protected status under applicable laws. Our diverse team drives innovation, competitiveness, and creativity, enhancing our ability to effectively serve our clients and communities. This commitment to diversity makes us stronger and more adaptable.

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