Sr. Mainframe Developer

Infinite Computer Solutions

Full-time - Mid Level

Professional, Scientific, and Technical Services

About the position

The Sr. Mainframe Developer is responsible for designing, developing, and maintaining mainframe applications in a z/OS environment. This role involves optimizing job control language (JCL) for batch job execution, managing DB2 database objects, and performing data analysis to support decision-making processes. The developer will also monitor and troubleshoot batch jobs, conduct system maintenance, and collaborate with cross-functional teams to deliver effective solutions.

Responsibilities

• Design, develop, and maintain mainframe applications using COBOL in a z/OS environment.
• Write and optimize JCL (Job Control Language) to execute batch jobs and manage job scheduling and dependencies.
• Develop and maintain DB2 database objects including tables, views, indexes, and stored procedures.
• Write and optimize SQL queries for data retrieval, updates, and analysis.
• Utilize SQL for data analysis to generate reports, extract data insights, and support decision-making processes.
• Perform data validation and ensure data integrity across mainframe systems.
• Monitor and troubleshoot batch jobs to ensure timely and accurate processing.
• Debug and resolve issues related to job failures, performance bottlenecks, and data discrepancies.
• Conduct performance tuning and optimization of COBOL programs, JCL scripts, and DB2 queries.
• Implement and manage mainframe system updates, patches, and upgrades.
• Create and maintain technical documentation for mainframe applications, job flows, and database schemas.
• Provide regular status updates and reports on development progress, job performance, and data analysis.
• Work closely with other developers, system administrators, and business analysts to understand requirements and deliver solutions.
• Provide support for production issues and participate in on-call rotations as required.

Requirements

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 3+ years of experience working with Mainframe z/OS environments, including COBOL, JCL, and DB2.
• Proven experience in developing, debugging, and optimizing mainframe applications and batch jobs.
• Strong experience in SQL for data analysis and reporting.

Nice-to-haves

• IBM Certified System Administrator for z/OS
• IBM Certified Application Developer - COBOL
• DB2 Certification for Developers