Mainframe Developer Application Development

Karishma Shaik

Mainframe Developer

Email: *************@*****.***

Phone: 251-***-****

PROFESSIONAL SUMMARY:

8+ years of experience in analysis, design, development, testing and maintenance in the field of Mainframe application development using IBM Z/OS system.

Strong exposure in COBOL and JCL developing job flows, schedules, and batch processing.

Knowledge on CICS modules/transactions for real - time application scenarios.

Expertise in working with DB2 for z/OS 8.0/9.0/10 databases. Knowledge working with IMS DB/DC database.

Very Well experienced in IBM mainframe computer systems using COBOL, DB2, JCL, VSAM, and TSO/ISPF, SAS, Knowledge on CICS, IMS

Acquired in-depth knowledge of IBM MQ FT and Mainframe technologies, contributing to the optimization of messaging and file transfer processes.

Working knowledge on DataStage 9.1 ETL tool. UNIX shell Scripting Job scheduling.

Strong experience working with Waterfall as well as Agile based Mainframe application development.

Participated in requirements analysis, reviews and working sessions to understand the systems and system design. Experience in designing Low level and High-level design documents.

Created, presented Estimates, proposals and gap analysis documents to client leadership.

Extensive experience with Sort Utilities like DFSORT and SYNCSORT and ICETOOL.

Strong Experience with usage of IBMDB2 Utilities for LOAD, UNLOAD, FASTLOAD.

Scheduled batch flows using the CA7 scheduler, DataStage Sequencer jobs using AUTOSYS.

Strong experience in VSAM file processing and Message Queue (MQ) processing

Experience in version control tools like Change Man and Endevor.

Expertise MF tools like TSO/ISPF, File Aid, File Aid for DB2, SPUFI, PDSMAN, and SDSF.

TECHNICAL SKILLS:

Languages

C, IBM Mainframe (COBOL, JCL, VSAM),C#,Oracle(SQL,PLSQL)

Platforms

Windows 2000/XP/7

Database

DB2 V8.1/V10

Utilities

DF SORT, SYNCSORT, ICETOOL, IBM Utilities for DB2, NDM/FTP, VSAM

Tools

TSO/ISPF, SPUFI, File Aid, PDS MAN, CA7, Xpeditor, SDSF, JCL PREP, Endevor, Change Man, Expeditor, Mainframe Express, IBM Debug tool,, Quality Center

DB Tools

File-Aid for DB2, QMF, IBM FQ FT, COOLGEN

Methodologies

Agile, waterfall, SDLC

PROFESSIONAL EXPERIENCE:

Client: Legendary Bank, Remote May 2021 - Till Date

Role: Senior Mainframe Developer

Responsibilities:

In AGILE, helped the team in planning the sprint by identifying modules and creating stories.

Created COBOL-DB2, COBOL-IMS modules, insert/update or delete from DB, JCLs to execute the modules.

Developing/Enhancing the programs according to the client standards using IBM Mainframe Technology.

Analyzing the applications

Proficient in COBOL, JCL, and DB2, with extensive hands-on experience in developing and maintaining mainframe applications.

Experienced in implementing and maintaining batch processing workflows on mainframes, utilizing tools such as IBM Job Control Language (JCL).

Experienced in planning and executing seamless data migration projects, including transferring data between storage systems, and ensuring minimal disruption to operations.

Proficient in managing and administering storage systems on mainframes, ensuring optimal performance, reliability, and scalability.

Spearheaded the design and development of scalable and maintainable mainframe applications, adhering to industry best practices and architectural standards.

Proficient in CICS (Customer Information Control System) on the Mainframe platform, with hands-on experience in developing, maintaining, and debugging CICS applications.

Demonstrated expertise in leveraging CICS features to design efficient and reliable transaction processing systems, ensuring optimal performance and scalability.

Batch Processing the Application.

Preparing the documentation works of the project for future References.

Used File-Aid for DB2, QMF and SPUFI for accessing the DB2 database. Created DCLGENs and used them in COBOL modules.

Used DB entities Views, Indexes, and some DB concepts.

Used Endevor tool to maintain the COBOL modules, JCLs, parms and procs and for promoting the same to higher environments.

Managed the Change Request procedures for the identified bug fixes and served as the point of contact for all the enhancement installations.

Performed Unit Testing.

Extensive experience in utilizing MQ (Message Queuing) within CICS environments to facilitate seamless communication and data exchange between distributed applications.

Acted as an advisor to management on technological direction, particularly concerning TS7700 and DS8900 architecture and features.

Led and implemented Proof of Concepts (POCs) to assess the feasibility and effectiveness of new storage solutions.

Reviewed, approved, and coordinated storage-related changes, ensuring adherence to documented procedures.

Extensive experience in leveraging CA Gen development tools to design, develop, and meticulously test robust application software solutions.

Proven track record of effectively mentoring team members throughout the CA Gen application lifecycle, fostering skill development and knowledge transfer within the organization.

Took responsibility for critical problem-solving and the development of processes and procedures for mainframe storage changes.

Skilled in configuring, administering, and troubleshooting MQ resources within CICS environments, ensuring smooth and uninterrupted message flow across diverse application landscapes.

Implemented and managed tape-based backup solutions for data protection and disaster recovery.

Used NDM and FTP has file transfer protocols between mainframe LPARs and between mainframe and midrange servers respectively.

Used CA-7 as the scheduler tool for all the batch flows inside the application.

Created Sort utilities like Syncsort and IBM DB utilities using JCL and framed the job flows for batch processing of application data.

Environment: COBOL, DB2, JCL, VSAM, Ezetrieve, SAS, Syncsort, Endevor, Xpeditor, CA-7, Quality Center, SharePoint

Client: Regions Bank, Birmingham, AL Feb 2019 – April 2021

Role: Mainframe Developer

Responsibilities:

Responsible for Requirements gathering, Impact analysis, Project estimation, scheduling and tracking the deliverables.

Executing Reno Test plan tool to convert the RPL to The IBM supported Mainframe Language coding and Fixed the Test plan tool issues.

Debugging the Programs and addressing the issues.

Creating files and all inputs to make the test plan tool run.

Preparing project documents for quality assurance (QA) and quality control (QC) team and for future references.

Implemented automated code generation for COBOL, CICS, and DB2 platforms, enhancing the efficiency and consistency of application development.

Collaborated with cross-functional teams to integrate COOL: Gen applications seamlessly into the existing mainframe ecosystem.

Designed, developed, and maintained mainframe applications using COOL: Gen, a model-driven development tool.

Mentoring and explaining about working in Test plan tool for beginners

Preparing Test Plan and Test cases according to the requirements

Regular raising and tracking the defect tickets in Quality center tool.

Developing the programs according to the client standards using IBM Mainframe Technology.

Managed the Change Request procedures for the identified bug fixes and served as the point of contact for all the enhancement installations.

Proven ability to collaborate with cross-functional teams to design, implement, and optimize CICS-MQ integrations, delivering solutions that align with business objectives and requirements.

Received commendations for effectively resolving complex issues and optimizing system performance through proactive monitoring, tuning, and enhancement of implementations.

Mentored the offshore team and gave them technical guidance and helped them understand the business.

Proficient in identifying opportunities for optimization and enhancement within CA Gen applications, implementing strategic solutions to drive efficiency and maintain operational excellence.

Responsible for the root-cause analysis, incident research and ticket resolution.

Conducted thorough troubleshooting and debugging of CA Gen applications, resolving issues promptly to minimize downtime and optimize system performance.

Analysed COBOL-DB2 modules as part of incident research and identified the issues and fixes.

Over saw the code development and responsible for all the deliverables and interactions with the client.

Worked extensively with VSAM files and used COBOL modules to read/write.

Used Endevor tool to maintain the COBOL modules, JCLs, parms and procs and for promoting the same to higher environments.

Used SharePoint as version control tool for the project documents.

Used File-Aid for DB2, QMF and SPUFI for accessing the DB2 database. Created DCLGENs and used them in COBOL modules.

Used NDM and FTP as file transfer protocols between mainframe LPARs and between mainframe and midrange servers respectively.

Environment: COBOL, DB2, JCL, VSAM, CICS, DFSORT, Syncsort, Endevor, Xpeditor, BMC Explains, CA-7, Quality Centre, SharePoint

Client: GV Technologies, Hyderabad, India August 2016- May 2017

Role: Mainframe Developer

Responsibilities:

Served as an onsite co-coordinator for the application mentoring the 8-member offshore team.

Responsible for Requirements gathering, Impact analysis, Project estimation, scheduling and tracking the deliverables.

Developing/Enhancing the programs according to the client standards using IBM Mainframe Technology.

Doing the job set up and checking whether the job is running fine.

Debugging the Programs and addressing the issues.

Creating files and all inputs to make the job run.

Preparing the documentation works by writing positive and negative cases of the program by analyzing the program.

Used File-Aid for DB2, QMF and SPUFI for accessing the DB2 database. Created DCLGENs and used them in COBOL modules.

Used Endevor tool to maintain the COBOL/CICS modules, JCLs, parms and procs and for promoting the same to higher environments.

Used NDM and FTP has file transfer protocols between mainframe LPARs and between mainframe and midrange servers respectively.

Environment: COBOL, DB2, JCL, VSAM, Syncsort, Endevor, Xpeditor, BMC Explains, CA-7, Quality Center, SharePoint.

Client: Diya Systems. India May 2013- June 2016

Role: C# Developer

Responsibilities:

Developed Role base Security to authorize member to a specific Role.

Involved in preparing documents, developing use cases, identifying classes and Objects, drawing class diagrams, sequence diagrams using.

Used Datasets and Data Grid controls to display sales reports.

Serviced components functionality for dealer service providers to automatically ftp files and process those files real time using queuing strategies for distributed Vendor Interface application and priority scanning processes.

Created web application using C#.

Developed various interface webpages for incoming files for the Vendor Interfaces including service invoice, repair order, finance and insurance, vehicle inventory tracking, parts order using C# and job claims with stored procedures.

Design, development, and deployment of Vendor Interfaces for load testing and in production environment.

Completed full life-cycle applications with spiral process, waterfall, and incremental software development with emphasis on performance, scalability, and security.

Worked with Product\\QA to improve applications by introducing enhancements needed by dealers including vehicles, parts, Lexus vendor interface tracking tool and customer records.

EDUCATION:

Masters completed in Computer & Information Sciences (University of South Alabama)-2019

Bachelors Completed in Computers science engineer (Jntu -Kakinada)-2013

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