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Sr. Mainframe Developer Resume

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PROFESSIONAL SUMMARY:

  • 7 years of Information Technology experience in Mainframe Application Development, Maintenance, Testing and Support.
  • An accomplished software professional specializing in Mainframe technologies in Design and analysis with extensive experience in full life cycle of the software design process.
  • Good analytical & communication Skills and ability to work independently with minimal Supervision and also perform as part of a good team member.
  • IBM certified as Database Associate.
  • Excellent knowledge on Core Mainframe technologies like COBOL, CICS, IMS - DC, JCL, DB2 SQL, VSAM and IBM tools & utilities.
  • Solid Knowledge & experience working with most of the Mainframe application tools & Utilities like FileAid, FileManager, ChangeMan, Endeavor, Xpeditor, TSO/ISPF, SPUFI, QMF, FTP, PJS, REXX, Abendaid, CA7, Platinum, Softech, Infoman.
  • Having working knowledge on IMS calls to transfer messages between different regions.
  • Intermediate knowledge on DB2 Stored Procedures.
  • Working Knowledge of performance tuning using explain plan and explain program.
  • Followed most of the CMM (Level-5), and CMM (I) processes through out the life cycle of the project.
  • Good experience of creating functional and technical specifications & analysis document of the system.
  • Monitoring Production Batch operations, which also include scheduling and monitoring of SAT & UAT batch using different scheduler utilities available on Mainframes.
  • Good at creating flowcharts and system design documents using MS Excel, MS Power Point, & MS Word.
  • HP Quality center, Clear Quest experience for SAT and UAT monitoring, which includes, updating SAT and UAT scripts execution, defect logging and follow-up.
  • Excellent oral & written communication skills and a motivated, organized team player with high aptitude for learning.

TECHNICAL SKILLS:

Operating Systems: MVS, OS/390, Z-0S, Win98/2000/XP

Programming Languages: COBOL, VSCOBOL II, JCL, SQL, PL/SQL.

Database Technologies: DB2, Oracle 9i

Version Control Tool: Endeavor, Changeman

Debugging Tools: Xpeditor, IBM Clearquest

Access methods: VSAM

Transaction Monitoring: CICS, OMEGAMON, IMS-DC

Other Tools: ISPF/TSO, QMF, SPUFI, File-Aid

Microsoft Products: Microsoft Office Suite, Microsoft Project Plan

Messaging service: IMS

Process Tools: Test Director/ HP Quality Center

Data Warehousing tool: Informatica

Mailing Systems: Lotus Notes, MS Outlook

WORK EXPERIENCE:

Sr. Mainframe Developer

Confidential

Responsibilities:

  • This application is developed on Distributed/SOA five layer architecture where first three layers work on JAVA and bottom two layers work on Mainframes.
  • Used XML to transfer data/messages between JAVA based frontend and Mainframe based backend application.
  • Used IMS calls to transfer messages between different Transaction queues to synchronies the business process.
  • Used Channels/Containers to pass above 32kb data between tasks.
  • Used TSO/ISPF utilities to create and Maintain PDS, PS, etc. and to monitor Spools and to migrate files from one region to other regions.
  • Used FILE-AID to create and maintain VSAM (KSDS), PDS, and PS.
  • Used Xpeditor to test and monitor step-by-step execution of programs.
  • Developed Dummy driver programs using KSDS, TSQ to perform unit testing of Online Application programs.
  • Used CEMT, CECI, CECA, CEBR etc. CICS Transactions.
  • Used OMEGAMON to monitor the different CICS regions, hence simplify the debugging.
  • Developed DB2 embedded COBOL programs with CICS commands to link to other programs.
  • Used CICS links calls and Dynamic memory allocations to build the modularity so as to simplify the coding.
  • Extensively worked on DB2 cursor development with joins and also on Sub-queries and Co-related sub-queries.
  • Used Explain Plan, and Explain Program for DB2 performance tuning.
  • Written COBOL/DB2 Batch programs for Conversion, Migration and Maintenance of Application data.
  • Developed Batch programs using QSTART and BMC utility to easily retrieve the commit points and restart mechanism.
  • Hands on experience in Scheduling and running batch jobs using JCL UTILITIES.
  • Used Endeavor as version control tool for code check-ins, code retrievals, and Change Request management at different SDLC levels.
  • Used Softech, Platinum tools for easy retrieval and updating of data mainly in Development /Testing environments.
  • Adhere to companies QA standards Using Test-Director and HP Quality Center tools to develop, upload and run test cases at different SDLC stages.

Environment: H/W: Z-Series O/S: Z/OS, Messaging: IMS-DC queues, S/W: DB2, COBOL, CICS, JCL, VSAM, XML.

Confidential

Programmer Analyst

Responsibilities:

  • This project involves continuous support and Maintenance of the various systems. Monitoring of the Batch processes like job runs, sending and receiving files from vendors. Monitoring on-line transactions
  • Designed and implemented two systems successfully for Umler and SSIER projects. Client has given feedback as 7/7 max to me for continuous time periods.
  • This task involved High level Requirement gathering, high level Analysis, and preparing estimation for Projects and Enhancements
  • Solve problems originating from production system under pressure and time limitation
  • Development of programs based on Program Specs
  • Performed Unit testing, End-to-End testing and supporting further testing Stages like SAT, and UAT.
  • I have served as SME for the project and also helped in structuring other projects in the client for better business.
  • I have worked in Informatica tool for Data Warehousing part of my projects.
  • Modify existing Cobol-IMS online program, code new Cobol-DB2 programs.
  • Developed DB2 embedded COBOL programs to link to other programs there by increasing modularity.
  • Extensively worked on DB2 cursor development with joins and also on Sub-queries and Co-related sub-queries.
  • Analyze the job log to find the production ABEND and fix them and impact analysis to resolve user queries.
  • Used MVS utilities to allocate new datasets, catalog/ un-catalog dataset, copy dataset, transmit dataset from one mainframe region to another.
  • Used Explain Plan, and Explain Program for DB2 performance tuning.
  • Written COBOL/DB2 Batch programs for Conversion, Migration and Maintenance of Application data.
  • Job Scheduling and running batch jobs using JCL UTILITIES.
  • Used Changeman as version control tool for code check-ins, code retrievals, and Change Request management at different SDLC levels.
  • Used SPUFI, QMF tools for easy retrieval and updating of data mainly in Development /Testing environments.

Environment: H/W: Z-Series O/S: Z/OS S/W: DB2, COBOL, IMS-DC, JCL, VSAM.

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