Job Summary
MAINFRAME SENIOR DEVELOPER
Detailed Job Description Location
Pan India
ROLE BAND TECH STACK EXPERIENCE TYPE
Mainframe Senior Developer E2.1 Mainframe 8+ Years Full-time
Role Purpose
Design, develop and support mainframe components as a senior individual contributor: delivering high-quality, well-tested and maintainable solutions, resolving complex technical problems, and supporting less experienced engineers within the team.
Key Responsibilities
Development & Design
• Design and build mainframe components, services and enhancements within the agreed architecture and standards.
• Translate user stories and specifications into clean, efficient and testable implementations.
• Handle complex technical problems, performance issues and non-trivial defects independently.
• Contribute to technical design discussions, estimation and solution options.
Quality Engineering
• Write and maintain unit, integration and regression tests to agreed coverage expectations.
• Participate actively in code reviews, providing and acting on constructive feedback.
• Apply secure coding practices, effective error handling and appropriate logging. Delivery & Support
• Deliver committed scope within agreed sprint or release timelines with predictable quality.
• Support build, deployment, environment issues and release verification activities.
• Investigate production incidents, perform root-cause analysis and implement durable fixes.
Collaboration
• Work closely with leads, architects, QA, business analysts and support teams.
• Participate in agile ceremonies, backlog refinement and dependency discussions.
• Mentor junior developers through pairing, reviews and knowledge sharing.
Key Responsibilities
Technology Focus — Mainframe
• Design, develop and support COBOL/CICS/DB2 batch and online components within agreed standards.
• Optimize batch windows, DB2 access paths and resource consumption to protect service levels. • Support mainframe modernization, API exposure and integration with distributed and cloud platforms.
Required Technical Competencies
Core Skills COBOL, JCL, CICS, VSAM, DB2 and z/OS utilities; batch and online program design and optimization.
Design & Architecture Mainframe application architecture, modularization, API enablement and modernization/coexistence patterns.
Data & Integration DB2 and VSAM data design, SQL tuning, file handling, data conversion, integrity and reconciliation.
Platform & DevOps z/OS operations, scheduling, change management, environment promotion and mainframe-to-distributed integration.
Quality & Operations Unit and regression testing, batch cycle validation, performance and MIPS optimization, defect RCA.
Experience & Qualifications
• 8+ years of hands-on mainframe development experience in enterprise environments.
• Strong track record delivering production-grade components across full delivery cycles.
• Bachelor’s degree in Computer Science, Engineering or IT, or equivalent experience.
• Relevant platform or cloud certifications advantageous, not mandatory.
Leadership & Behavioural
• Strong ownership of assigned deliverables end to end.
• Analytical, detail-oriented approach to problem solving.
• Clear written and verbal communication within a delivery team.
• Collaborative, dependable and open to feedback. Location-Specific Expectations
• Collaborate from an India delivery location with stakeholders across regions and time zones.
• Ensure standards, decisions and reusable patterns are documented and adopted across distributed squads.
• Support virtual workshops, technical governance and production-readiness reviews.
Key Deliverables & Success Measures
• Working, tested and reviewed code delivered to agreed scope and timelines.
• Low defect leakage into system, UAT and production environments.
• Timely resolution of assigned defects and production incidents.
• Accurate technical documentation and effective knowledge transfer.
• Consistent adherence to coding, security and testing standards.