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Senior Mainframe Developer Resume

Collierville, TN

SUMMARY

  • Senior developer with more than 8 years of experience in design, development, implementation, testing and maintenance, of mainframes, specializing in Cobol, JCL, IMS, DB2 and VSAM technologies. Sound knowledge of payment card, banking and other financial applications.
  • Develop and maintain online and batch applications. Provide test and production support activities.
  • Strong knowledge in mainframe tools like ChangeMan and File - aid.
  • Worked with utilities and software like TSO/ISPF, SPUFI, QMF, SYNCSORT, JCL, NDM, Quality Center, FTP, IDCAMS, Control-M, JobTrac and IBM utilities.
  • Expertise in preparing project artifacts like project estimation document, detailed requirements specifications, functional and technical specifications, test cases documents, test plans, test strategies, defects log and implementation activities document.
  • Created user test cases for User Acceptance Test (UAT) and coordinate with users for UAT.
  • Actively involved in all project related communications like project kick off meetings, war room discussions, brain-storm sessions, project KT sessions, Daily/Weekly standup meetings, Daily/Weekly project status meetings, project hand-off meetings with all the stake holders of the project and Onshore/Offshore coordination.
  • Experience working in Data Warehouse and Business Intelligence Projects along with the team of Informatica, Talend (ETL)
  • Understanding of Informatica Power center and Talend Open studio and Talend Integration Suite
  • Ability to work independently or within cross-functional teams to handle projects concurrently.
  • Experience in analyzing functional business specifications, creating high & low level design documents.
  • Proficiency in reviewing the CMR’s (Change Manage Records) and SSR’s (Special Service Request) for all the projects before going live.
  • Impact analysis to identify the components that are required to change per the new business request.
  • Ability to learn new technologies and processes rapidly and implement them in the project.
  • Provided Implementation and Post-Implementation support for the implementation project.
  • Work well under pressure using initiative to set priorities and meet deadlines without close supervision.

TECHNICAL SKILLS

Operating Systems: OS/390, Z/OS, Unix

Programming Languages: COBOL, JCL, CICS, Core Java, IBM Assembler Language

Databases: DB2, SQL Server, Mongo DB & IMS DB

Versioning tools: Change Man, ISPW

Tools: / Utilities: TSO, ISPF, File-Aid, Change man, Control-M, FTP, NDM, SYNCSORT, SPOOL, SPUFI, IDCAMS, JobTrac, IBM Utilities, Xpeditor, Informatica, Talend, AWS

Business Process tools: MS Word, Excel, PowerPoint, Visio, Outlook

PROFESSIONAL EXPERIENCE

Confidential, Collierville, TN

Senior Mainframe Developer

Responsibilities:

  • Analyzed the requirements and prepared HLD and LLD specification documentation.
  • Prepared impact analysis document before changing the existing programs.
  • Reviewed the program specifications and program code for development using COBOL, DB2, IMS DB, VSAM, REXX and JCL.
  • Coded and implemented custom programs, in assembler language and COBOL, including:
  • CICS exit to gradually lower the dispatching priority of a task as the task remains active for a longer and longer time.
  • CICS exit to copy screen ID to SMF program ID field, to provide more information in performance reporting.
  • Involved in creating the test PSB for test region.
  • Used ChangeMan to stage modified components and copybooks to test and develop environments.
  • Approached the DBA team for the creation of new tables and changes to the existing tables in test, development and production regions.
  • Code review, unit testing, functional testing, regression testing, and documentation of test results.
  • Involved in internal reviews like code walkthroughs, unit-test review of modified programs, copybooks and JCL’s etc. and quality control documents.
  • Prepared Unit test cases as per the new code and comparing the test results before performing the test and after performing the test.
  • Wrote SQL queries against the database to validate the data.
  • Attended daily and weekly calls with offshore teams to discuss ongoing projects and tasks assignments.
  • Resolution of test bugs uncovered during all phases of testing.
  • Used FTP and NDM for transfer the files from one region to another region.
  • Prepared and documented the various deliveries (All phases of project).
  • Compared input/output files before and after execution to verify the results as per the requirement.
  • Root cause analysis of the non-matching reports or files.
  • Provided solutions to issues raised in System Testing (SIT) and User acceptance Testing (UAT).
  • Monitored the batch jobs and provided support on implementation.
  • Prepared jobs hierarchy flow-charts using Visio tool.
  • Estimated time and efforts for the enhancement.
  • Involved in the preparation of pre-implementation and post-implementations tasks.
  • Coordinate the activities with team members.

Environment: COBOL, DB2, IMS DB,SQL, JCL, VSAM, CHANGE MAN, REXX,FILE-AID, SPUFI, Control-M, QMF, IDCAMS, FTP, NDM, SYNCSORT

Confidential

Mainframe Developer

Responsibilities:

  • Responsible for the requirement gathering, coding, testing of the application.
  • Prepared detailed technical design documents based on analysis of functional business requirement.
  • Based on the requirement document, Performs impact analysis, provide the target completion date.
  • Attended the Daily calls and weekly calls with onshore teams to discuss the ongoing projects and tasks assignments.
  • Used languages like COBOL, JCL, DB2,REXX and CICS to meet as per the business requirement.
  • Preparation of testing and implementing strategies for modified components.
  • Preparation of test data using File-Aid to run the test scenarios.
  • Entered new business data through CICS screens.
  • Performed the unit testing and shared the unit test results with business as per the business request.
  • Preparation of test data to run the test cycle run end to end job flow.
  • Compared the files before and after execution of jobs to make sure they are in sync.
  • Root cause analysis of the non matching reports or files.
  • Reviewed the CMR’s for the batch and online components of live projects.
  • Have given knowledge transfer of end to end job flow to the new joiners.
  • Provided solutions to issues raised in System Testing (SIT) and User acceptance Testing (UAT).
  • Execution of regression test cycles.
  • Have involved in the preparation of pre-implementation tasks and post-implementations tasks.
  • Co-ordinate the activities with team members.

Environment: JCL, IMS DB, DB2, COBOL, CHANGE MAN, REXX,CICS, SQL, FILE-AID, Control-M, SPUFI, QMF, IDCAMS, FTP, NDM, SYNCSORT

Confidential

Senior Mainframe Developer

Responsibilities:

  • Understand the client requirements and project functionalities for traceability matrix document.
  • Involved in requirement gathering with other team members.
  • Prepared high level and detailed design documentation based on business requirement.
  • Based on requirement document, performed impact analysis and provided the target completion date.
  • Attended the calls before start of project to discuss the existing process and what all the business requirements are. Attended the Daily calls and weekly calls with onshore teams to discuss the ongoing projects and tasks assignments.
  • Involved in development/enhancement of applications using COBOL, DB2,IMS DB,REXX,VSAM and JCL.
  • Involved in creating the test PSB for test region.
  • As per the business requirement modified the existing Copy books, Proc’s for impacted components.
  • Involved in Batch and online testing.
  • Approached the DBA team for the creation of new tables and changes to the existing tables.
  • Prepared the test datasets with proper data for different scenarios.
  • Run the LOAD utilities to refresh the test database data.
  • Prepared the unit test plans and test cases.
  • Created the new JCLs, Procs and copybooks with proper naming conventions.
  • Monitored the Submission, NFM, Settlement and Statement streams level information after implementing the changes.
  • Resolved the bugs raised by the testing teams.
  • Execution of regression test cycles.
  • Root cause analysis of the non-matching reports or files.
  • Worked on Enhancements of the existing codes by adding new functionality to it.
  • Creation of test data & test plan for various scenarios.
  • Documented and captured the Unit test case results and uploaded to HP Quality center.
  • Involved in the preparation of pre-implementation and post-implementations tasks.

Environment: COBOL, IMS DB,DB2, JCL, VSAM, CHANGE MAN, SQL, Control-M, FILE-AID, SPUFI, QMF, IDCAMS, FTP,NDM, SYNCSORT, IBM Utilities, REXX, Quality Center

Confidential

Mainframe Developer

Responsibilities:

  • Impact analysis and research of the affected system.
  • Program modification using COBOL, JCL, DB2 as per the business requirements.
  • In charge of having the cycle completed within the specified SLA (Service Level Agreement).
  • Provided the solution for the ServiceNow requests (SR s).
  • Prepared the test plan and test results and get the business approvals.
  • Monitored the batch jobs and provided support.
  • Used NDM for transferring the data across the regions.
  • Used control-M to schedule the mainframe jobs.
  • Identified, Unloaded and Loaded test data from Production to Test regions.
  • Generated various ad hoc reports as per the business requirements.
  • Wrote the SQL quires against the database using SPUFI and QMF.
  • Compared the test results before performing the test and after performing the test.
  • Monitored the jobs, These jobs will run based on the frequency
  • Documented the test case results.

Environment: JCL, IMS DB, COBOL, CHANGE MAN, SQL, FILE-AID, SPUFI, JobTrac, QMF, IDCAMS, FTP, NDM, SYNCSOR, CICS.

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