Mainframe Developer With DevOps

Mainframe Developer with Specialization in DevOps Migration

Location: Remote

KEY RESPONSIBILITIES

Mainframe Development & Support

• Design, develop, and maintain mainframe applications using COBOL, PL/I, JCL, REXX, and Assembler.
• Analyze existing legacy programs and batch jobs to assess modernization readiness and reusability.
• Develop and optimize DB2 for z/OS queries, stored procedures, and data access logic.
• Support CICS and IMS transaction processing applications throughout the development lifecycle.
• Troubleshoot and resolve production incidents, abends, and performance issues in z/OS environments.

DevOps & CI/CD Enablement

• Implement and manage CI/CD pipelines for mainframe application delivery using IBM Dependency Based Build (DBB), Jenkins, Tekton, or equivalent tooling.
• Migrate mainframe source code to Git-based version control (GitHub, GitLab, Bitbucket) and establish branching and release strategies.
• Develop automated unit and regression test frameworks for COBOL/PL/I programs using tools such as IBM Rational Test RealTime or IBM Z Open Testing.
• Define and enforce DevOps standards, code review practices, and deployment governance for mainframe delivery teams.
• Integrate mainframe build and deploy processes with enterprise DevOps platforms (Jira, Confluence, ServiceNow).

Migration Planning & Execution

• Conduct discovery and impact analysis of z/OS workloads — JCL, batch jobs, datasets, and application interdependencies — to support migration planning.
• Prepare detailed migration plans, task breakdowns, and effort estimates for management and stakeholder review.
• Execute controlled migrations between environments (Dev, Test, Production) ensuring data integrity and minimal downtime.
• Manage cross-LPAR dataset transfers, SMP/E activities, and library migrations using approved methods (FTP, XMIT, IDCAMS).
• Document pre- and post-migration states, cutover procedures, and rollback plans.

Collaboration & Stakeholder Engagement

• Work closely with infrastructure teams on LPAR configuration, storage, and system software upgrades (e.g., DB2 version upgrades, IBM software installs).
• Coordinate with application owners, QA teams, and project managers to align delivery timelines and resolve technical dependencies.
• Contribute to DevOps capability-building by coaching junior developers and conducting internal knowledge-transfer sessions.
• Prepare technical documentation, runbooks, and status reports for internal and client audiences.