Mainframe Developer

About This Role

The Mainframe Developer will be responsible for designing, developing, and integrating mainframe-based solutions for core banking systems within an Agile team, ensuring high-quality story delivery and adherence to enterprise standards.

Responsibilities

• Design, develop, and deliver mainframe-based stories within each sprint
• Apply enterprise standards and design patterns for solution design, coding, and quality
• Ensure solutions meet product acceptance criteria with minimal technical debt
• Participate with team members to drive best practices through peer reviews and other engineering practices
• Attend team ceremonies and contribute to planning, estimation, and design sessions
• Vocalize risks in a timely manner and escalate appropriately

Requirements

• 8+ years of experience in Mainframe based development and integration
• Strong hands-on experience with COBOL for core banking systems (deposits, loans, GL, payments), including file/DB processing, copybooks, and error handling
• Expert in crafting/optimizing JCL, cataloged procedures, restart/recovery, conditional steps, and data manipulation with SORT utilities
• Experience with designing and troubleshooting high-throughput CICS applications (comm areas, TSQs/TDQs, pseudo-conversational design, MAPs/BMS, threadsafe considerations)
• Proficiency in Data modeling, SQL tuning (EXPLAIN, indexing strategies), concurrency control, packages/binds, stored procedures, and plans for EOD/EOM heavy workloads
• Knowledge of Access models, dataset/database protection, least-privilege, MFA integration, and audit readiness for regulators
• Experience with Batch Scheduling (Control‑M/CA‑7) – Building complex job streams, calendars, dependencies, SLAs, reruns/restarts, critical path monitoring for narrow batch windows
• MQ design (queues, channels), message persistence, dead-letter handling; understanding ISO 8583 (cards) and ISO 20022 (payments)
• Secure coding, logging/audit trails, PII handling, encryption/tokenization, retention rules, and evidencing controls
• Ability to read SMF/RMF, CICS/DB2 performance dashboards, detect contention, tune CPU/IO, and perform capacity planning
• Experience with File Transfer & Data Exchange – Connect:Direct (NDM), SFTP/FTPS, encryption (PGP), large file handling, file integrity checks, and partner data onboarding
• Proficiency in Exposing mainframe assets through z/OS Connect EE (REST/JSON), service wrappers, contract-first design, and hybrid integration patterns
• Experience with Impact analysis, segregation of duties, change advisory records, incident/problem management, and clean cutover/backout practices
• Good experience with ETL processing
• Candidate should have good analytical & problem solving skills
• Candidate should be able to fully debug their own code as well as others, troubleshoot defects and have a human centric approach to the user experience
• Experience working in Agile teams
• Demonstrates best in class design and solution patterns

Qualifications

• BACHELOR OF COMPUTER SCIENCE
• 8+ years of experience in Mainframe based development and integration

Nice to Have

• Experience with Horizon CI/CD platforms (Jira, bitbucket, Jenkins, Artifactory, Ansible, etc.,)

Skills

* Required skills