Senior Mainframe Modernization Developer (Hogan/COBOL)

Anas Mohammed

Senior Mainframe Modernization Developer Hogan & COBOL SME z/OS System Programmer

Email: ************@*****.*** PH: +1-224-***-****

Professional Summary:

Senior Mainframe Modernization Developer and SME with 9+ years of experience designing, developing, modernizing, migrating, integrating and supporting large-scale IBM z/OS applications across Banking, Financial Services, Healthcare and other enterprise environments.

Strong hands-on experience with Hogan, Enterprise COBOL, JCL, CICS, DB2, IMS DB/DC, VSAM, REXX, SQL and mainframe utilities, supporting both high-volume batch processing and online transaction processing environments.

Proven experience across the complete Software Development Life Cycle (SDLC), including requirements analysis, application impact analysis, technical design, development, integration, testing, migration, deployment, production stabilization, performance tuning and ongoing application support.

Experienced Hogan Developer and COBOL SME with hands-on experience supporting core banking applications, Hogan batch and online processing, application enhancements, business-rule analysis, production support and modernization of legacy banking workloads.

Strong background in mainframe modernization and migration, including legacy application assessment, dependency analysis, code remediation, data mapping, data conversion, interface modernization, migration testing, reconciliation, production cutover, rollback planning and post-migration stabilization.

Extensive z/OS System Programming experience with SMP/E, PTF/APAR maintenance, ServerPac, CBPDO, z/OSMF, IPL, LPAR, Parallel Sysplex, JES2, LINKLIST, APF/LPA, PARMLIB, RACF, VTAM, TCP/IP, OSA Express, GDPS and disaster recovery.

Experienced in integrating legacy mainframe applications with modern distributed and cloud platforms using REST/SOAP APIs, IBM MQ, CICS Web Services, z/OS Connect, SFTP, Connect, AWS Lambda, API Gateway, S3, DocumentDB and CloudWatch.

Strong experience with AWS/mainframe hybrid-cloud modernization, helping expose or integrate mainframe business capabilities with cloud services while maintaining z/OS as the system of record.

Hands-on experience with mainframe storage technologies including DFSMS, DFSMShsm/HSM, SMS, ACS routines, storage classes, data classes, management classes, dataset lifecycle management, capacity planning, backup/recovery and storage migration.

Strong production support experience troubleshooting COBOL abends, JCL failures, CICS issues, DB2/IMS errors, VSAM/file-processing problems, batch failures, system issues and integration failures using Abend-AID, File-AID, Xpediter, SDSF, TSO/ISPF and IBM utilities.

Experienced in developing REXX automation utilities and operational scripts for system health checks, dataset management, job monitoring, migration validation, reporting, software maintenance and repetitive mainframe administration activities.

Strong understanding of enterprise release and DevOps practices using Endevor, Changeman, Git, Jenkins, CI/CD, AWS CodePipeline and controlled promotion processes across development, QA, staging and production environments.

Experienced in high-availability and enterprise mainframe environments involving Parallel Sysplex, GDPS, disaster recovery, backup/recovery, system maintenance, capacity planning and production continuity.

Strong collaborator and technical SME experienced in working with business stakeholders, architects, application developers, QA, DBAs, infrastructure, cloud, middleware, security and operations teams to deliver complex modernization and migration initiatives.

Experienced in Agile/Scrum and Waterfall environments with strong skills in technical documentation, code reviews, design reviews, knowledge transfer, production readiness, implementation planning and mentoring junior developers and engineers.

Technical Skills:

Mainframe / Operating Systems: IBM z/OS, z/OSMF, MVS, LPAR, Parallel Sysplex, JES2, TSO/ISPF, SDSF

Hogan / Core Banking: Hogan Core Banking, Hogan CIS, Hogan IDS, Hogan RPM, DDA/TDA, Hogan Umbrella, PEM, CDMF, Hogan batch processing, Hogan online processing, Core Banking modernization

Programming Languages: Enterprise COBOL, COBOL, PL/I, Assembler, REXX, CLIST, Easytrieve, SQL, Embedded SQL

Databases: IBM DB2, IMS DB, IMS DC, VSAM, IDMS, Oracle, Amazon DocumentDB

Transaction Processing: CICS, CICS TS, CICS Web Services, IMS DC, BMS, OLTP

Batch Processing / Scheduling: JCL, PROC, JES2, CA7, Control-M, batch scheduling, job streams, restart/recovery processing, EOD/BOD processing

z/OS System Programming: SMP/E, RECEIVE/APPLY/ACCEPT, PTF/APAR, CSI, Zone Management, ServerPac, CBPDO, IPL, LINKLIST, APF Libraries, LPA, PARMLIB, JES2, RACF, system maintenance, health checks

Mainframe Networking: VTAM, TCP/IP, OSA Express, SNA, APPN, Enterprise Extender, FTP, SFTP, SMTP, SNMP, Connect/NDM

Storage Management: DFSMS, DFSMShsm/HSM, SMS, ACS Routines, Storage Classes, Data Classes, Management Classes, Dataset Management, Catalog Management, Capacity Planning, Backup/Recovery, Storage Migration

Mainframe Utilities / Debugging: Abend-AID, File-AID, Xpediter, IBM Debug Tool, IPCS, IDCAMS, DFSORT, SYNCSORT, IEBGENER, IEBCOPY, OMEGAMON, SDSF, SPUFI

Middleware / Integration: IBM MQ, REST APIs, SOAP, z/OS Connect, CICS Web Services, SFTP, FTP, Connect/NDM, API Integration

Cloud / Modernization: AWS Lambda, AWS API Gateway, AWS S3, Amazon DocumentDB, AWS CloudWatch, AWS CodePipeline, Hybrid Cloud, Mainframe-to-Cloud Integration, Microservices, REST APIs

DevOps / Version Control: Git, GitHub, Jenkins, AWS CodePipeline, Endevor, Changeman, CI/CD, DevOps, Release Management, Code Promotion

Automation: REXX, CLIST, Ansible, Zowe, REST API Automation, Job Automation, Dataset Automation, Operational Reporting

Security / Access: RACF, Top Secret, ACF2, Access Controls, Dataset Security, Compliance Support

Testing / Quality: Unit Testing, System Integration Testing (SIT), User Acceptance Testing (UAT), Regression Testing, Integration Testing, Migration Testing, Data Validation, Reconciliation, Production Validation

Monitoring / ITSM: ServiceNow, Moogsoft, OMEGAMON, SMF, RMF, Incident Management, Problem Management, Change Management

Migration / Modernization: Application Discovery, Dependency Analysis, Legacy Modernization, COBOL Modernization, Data Migration, Data Conversion, Application Migration, Mainframe Re-platforming, API Enablement, Cloud Migration, Cutover Planning, Rollback Planning, Post-Migration Stabilization

Methodologies: Agile, Scrum, Waterfall, SDLC, DevOps, CI/CD, Production Support

Work Experience:

CIBC Bank, Chicago, IL September 2024 – Present

Senior Mainframe Modernization Developer / Hogan & COBOL SME

Responsibilities:

Worked with business analysts, product owners, architects, and banking stakeholders to understand requirements for Hogan and core banking applications and translate them into technical solutions.

Performed application impact analysis across Hogan, COBOL programs, JCL, CICS transactions, DB2/IMS databases, VSAM files, MQ interfaces and downstream applications before starting enhancements or migration activities.

Reviewed existing Hogan and COBOL applications to understand business rules, program dependencies, batch flows, online transactions, database relationships and external interfaces.

Designed technical solutions for modernizing legacy mainframe applications while keeping existing banking functionality stable across batch and online processing.

Developed and enhanced Enterprise COBOL programs supporting core banking functions, transaction processing, account-related workflows, validations, reconciliation and downstream processing.

Developed and maintained JCL, PROCs and batch job streams for daily processing, EOD/BOD cycles, file processing, restart/recovery and dependent application workflows.

Worked with CICS transactions and DB2 programs to support online banking functions, transaction processing, data validation and high-volume OLTP workloads.

Developed and optimized DB2 SQL and worked with IMS and VSAM data structures for application changes, data processing, performance improvements, and reconciliation activities.

Worked on Hogan batch and online processing, analyzing program flows and making application changes based on business requirements and modernization needs.

Supported migration initiatives by analyzing legacy dependencies, preparing data mappings, validating converted data, performing reconciliation, and supporting migration testing and production cutover.

Integrated mainframe applications with distributed platforms using IBM MQ, REST APIs, SOAP services, SFTP, Connect and z/OS Connect.

Supported hybrid cloud modernization initiatives by connecting selected mainframe capabilities with AWS services including Lambda, API Gateway, S3 and CloudWatch.

Worked with z/OS system programming teams on SMP/E maintenance, PTF/APAR implementation, z/OSMF workflows, system configuration changes, RACF coordination and production implementation activities.

Supported DFSMS, HSM, SMS and dataset management activities related to application migration, storage utilization, backup/recovery and large-volume data processing.

Performed unit testing, SIT, UAT, regression testing, migration testing and production validation, troubleshooting defects using Abend-AID, File-AID, Xpediter, SDSF and TSO/ISPF.

Managed code promotion and releases through Endevor, Changeman and Git while following enterprise change-management and production deployment procedures.

Investigated production issues involving COBOL abends, DB2 errors, CICS failures, JCL problems, dataset issues and interface failures and worked with support teams to identify the root cause.

Developed REXX utilities and automation scripts for job monitoring, dataset validation, migration checks, operational reporting and repetitive mainframe support activities.

Worked closely with infrastructure, database, middleware, cloud, security, QA and operations teams during releases, migrations, system changes and production stabilization.

Prepared technical specifications, application dependency documents, migration plans, test evidence, implementation procedures, rollback plans and production support runbooks.

Participated in Agile ceremonies, technical design reviews, sprint planning, backlog refinement, code reviews and release planning while providing technical guidance as a Mainframe SME.

Environment: IBM z/OS, Hogan, Hogan Core Banking, Enterprise COBOL, JCL, CICS, DB2, IMS DB/DC, VSAM, REXX, SQL, IBM MQ, z/OS Connect, REST/SOAP APIs, SFTP, Connect, SMP/E, z/OSMF, RACF, DFSMS, HSM, SMS, Endevor, Changeman, Git, Jenkins, AWS Lambda, AWS API Gateway, AWS S3, CloudWatch, Zowe, Ansible, ServiceNow, Abend-AID, File-AID, Xpediter, SDSF, TSO/ISPF, Agile/Scrum.

Best Buy, India August 2019 – June 2023

Senior Mainframe Developer / Mainframe Modernization Engineer

Responsibilities:

Gathered functional and technical requirements from application owners, business teams, architects, and operations teams and converted them into technical specifications for mainframe applications.

Performed impact analysis on existing COBOL applications by tracing programs, copybooks, JCL, DB2 tables, VSAM files, CICS transactions, interfaces and batch dependencies.

Worked through existing application code and documentation to identify areas that could be reused, changed, migrated or exposed through modern interfaces.

Designed and developed COBOL applications for high-volume batch and online processing, focusing on transaction accuracy, performance and maintainability.

Created and modified JCL procedures and job streams for batch execution, scheduling dependencies, file processing, restart/recovery, error handling and downstream processing.

Developed and optimized DB2 SQL, performed query analysis and worked with DB2 utilities such as RUNSTATS, REORG, and LOAD to support application and database performance.

Worked extensively with VSAM KSDS/ESDS files for batch processing, file conversion, data validation, reconciliation and application enhancements.

Supported CICS applications and transaction flows, troubleshooting online processing issues and making changes required for new functionality.

Worked with IMS DB/DC applications, including application changes, database validation, ACBGEN-related processing, and performance troubleshooting.

Developed and supported IBM MQ, REST/SOAP, SFTP, Connect and CICS Web Service integrations between mainframe applications and distributed systems.

Participated in mainframe modernization initiatives involving application assessment, code remediation, data migration, interface modernization and integration with cloud-based services.

Worked with AWS Lambda, API Gateway, S3, DocumentDB and CloudWatch to support hybrid mainframe-cloud solutions and extend selected mainframe processing to distributed platforms.

Supported data migration activities from requirement analysis through data mapping, extraction, transformation, reconciliation, test conversion, validation, cutover and post-migration verification.

Used Endevor, Changeman, Git, and Jenkins to manage source code, application versions, controlled promotions, and release activities across development, QA and production environments.

Executed unit, integration, system, regression, and migration testing and worked with QA teams to investigate and resolve defects before production implementation.

Troubleshot production problems using Abend-AID, File-AID, Xpediter, SDSF, TSO/ISPF, DB2 utilities and system logs, with a focus on identifying root causes rather than temporary fixes.

Worked with DFSMS and HSM teams on dataset management, storage utilization, backup/recovery, data migration and performance-related issues affecting application processing.

Developed REXX and JCL utilities to automate repetitive operational tasks, job monitoring, dataset validation, reporting and deployment verification.

Worked with infrastructure, database, middleware, cloud, security and QA teams to coordinate application releases, migration activities, production support and system upgrades.

Participated in Agile ceremonies, code reviews, technical walkthroughs, defect triage, sprint planning and release planning.

Maintained technical documentation covering application design, data flows, interfaces, migration procedures, deployment steps, production support and recovery processes.

Environment: IBM z/OS, Enterprise COBOL, JCL, CICS, DB2, IMS DB/DC, VSAM, REXX, SQL, IBM MQ, REST/SOAP, CICS Web Services, SFTP, Connect, Endevor, Changeman, Git, Jenkins, AWS Lambda, AWS API Gateway, S3, DocumentDB, CloudWatch, DFSMS, HSM, IDCAMS, DFSORT, SYNCSORT, Abend-AID, File-AID, Xpediter, SDSF, TSO/ISPF, CA7, Agile/Scrum, DevOps.

HCL Technologies, India December 2016 – July 2019

Mainframe Developer/ z/OS Application Engineer

Responsibilities:

Worked with business analysts and healthcare application teams to understand requirements related to claims, eligibility, member information, provider processing, billing and healthcare transaction workflows.

Analyzed existing mainframe applications and identified impacted COBOL programs, copybooks, JCL jobs, DB2 tables, VSAM files, IMS components, CICS transactions and downstream interfaces.

Prepared technical specifications and program designs based on functional requirements, existing application behavior, and identified system dependencies.

Developed and modified COBOL programs supporting healthcare claims processing, member eligibility, provider information, billing, reconciliation and high-volume batch processing.

Developed and maintained CICS programs supporting online healthcare transactions and real-time access to DB2 and VSAM data.

Created and modified JCL, PROCs, and batch jobs for claims processing, file handling, reporting, scheduled processing, restart/recovery and downstream interfaces.

Developed embedded SQL and optimized DB2 queries used by COBOL applications, while validating data accuracy across high-volume healthcare processing.

Worked with VSAM and IMS data structures for application development, data extraction, file processing, reconciliation and production support.

Used IDCAMS, DFSORT, SYNCSORT, File-AID, SPUFI, Abend-AID, Xpediter, SDSF and TSO/ISPF for development, debugging, testing and production issue resolution.

Supported IBM MQ, FTP and SFTP interfaces used to exchange data between mainframe applications and external or distributed healthcare systems.

Participated in application migration and modernization activities by reviewing legacy dependencies, supporting data conversion, validating migrated records and assisting with implementation and cutover activities.

Performed unit testing, system testing, integration testing, regression testing, UAT support and production validation for application enhancements and migration changes.

Investigated batch abends, DB2 failures, JCL errors, file-processing issues, CICS problems and data discrepancies and worked with application and infrastructure teams to resolve them.

Managed code movement through Endevor/Changeman across development, QA and production environments while following established change-management procedures.

Supported production applications in high-availability environments, monitored scheduled jobs, investigated processing delays and helped maintain application SLAs.

Worked with scheduling teams using CA7 and related batch-control processes to manage job dependencies and ensure critical healthcare processing completed on time.

Supported application performance improvements by reviewing COBOL logic, DB2 access, batch execution, file processing and job dependencies.

Created and maintained technical documentation covering program specifications, process flows, data mappings, test scenarios, deployment instructions and production support procedures.

Participated in Agile/Scrum meetings, technical walkthroughs, defect triage, peer reviews, and release planning with developers, QA, business analysts and operations teams.

Provided knowledge transfer to application support and development teams covering application flows, batch processing, troubleshooting procedures and production recovery steps.

Environment: IBM z/OS, Enterprise COBOL, JCL, CICS, DB2, IMS DB/DC, VSAM, SQL, REXX, TSO/ISPF, SDSF, SPUFI, File-AID, Abend-AID, Xpediter, IDCAMS, DFSORT, SYNCSORT, Endevor, Changeman, IBM MQ, FTP, SFTP, CA7, Agile/Scrum, SDLC.

Education: Bachelors of Computer Science from Osmania University - 2017

Contact this candidate