Mainframe Developer

Veriipro; Louisville (KY); On-site; USD 80,000 - 100,000; Full time

Job summary

Veriipro is seeking a skilled developer based in Louisville, Kentucky to design, develop, and maintain mainframe applications critical for business operations. The role involves enhancing existing applications and conducting impact analyses of code changes. Candidates should have strong experience with COBOL and JCL in an Agile or hybrid Agile-Waterfall environment.

The ideal candidate will also engage in troubleshooting processes, support production releases, and ensure adherence to coding standards while mentoring junior team members.

Qualifications

• Strong hands-on experience with COBOL, JCL, and mainframe utilities.
• Experience in debugging and resolving production and non-production issues.
• Solid understanding of online and batch program development.

Responsibilities

• Design, develop, and maintain mainframe applications.
• Monitor, troubleshoot, and support batch and online job processing.
• Collaborate with business analysts to translate requirements into solutions.

Skills

COBOL

JCL

Mainframe utilities

Batch processing

Agile methodologies

Job description

Roles & Responsibilities

• Design, develop, and maintain mainframe applications to support critical business operations
• Enhance existing applications and perform maintenance and defect fixes across environments
• Develop and maintain JCL scripts for batch processing and ensure timely execution
• Monitor, troubleshoot, and support batch and online job processing
• Conduct impact analysis for code changes and system enhancements
• Participate in testing cycles, ensuring all deliverables meet functional and technical requirements
• Debug and resolve issues across development, testing, and production environments
• Maintain and update technical documentation, including program logic and job workflows
• Collaborate with business analysts, QA teams, and stakeholders to translate requirements into solutions
• Support production releases, including deployment and post-release stabilization
• Follow change management, release management, and incident management processes
• Ensure adherence to coding standards, quality benchmarks, and compliance requirements
• Participate in code reviews and contribute to continuous improvement
• Provide knowledge transfer and mentoring to junior team members
• Support modernization or migration initiatives as needed

Required Technical & Functional Skills

• Strong hands‑on experience with COBOL, JCL, and mainframe utilities
• Proven ability to design, develop, enhance, and support mainframe applications
• Experience with batch processing, scheduling, and job control
• Solid understanding of online and batch program development and support
• Ability to analyze existing systems and perform impact analysis for enhancements and fixes
• Experience in debugging and resolving production and non-production issues
• Knowledge of restart/recovery processes and job failure handlingFamiliarity with testing methodologies (unit, system, and UAT support)
• Understanding of performance, reliability, and security standards in enterprise systems
• Experience working in Agile or hybrid Agile‑Waterfall environments