Home

Poojitha Pasala - mainframe developer

[email protected]

Location: Phoenix, Arizona, USA

Relocation: yes

Visa: OPT EAD

POOJITHA PASALA Mainframe Developer 732-444-3158 [email protected] PROFESSIONAL SUMMARY Over 12 years of experience in application development, maintenance, and support using COBOL, JCL, CICS, DB2, VSAM, and associated mainframe tools. Hands-on experience enhancing and maintaining COBOL programs based on client requirements to improve business efficiency. Evaluated business requirements to determine technical implications and documented design solutions. Experienced in batch job scheduling using CA7 workstation and managing Service Desk tickets and Change Requests with a strong focus on meeting SLAs (Service Level Agreement). Proficient in using mainframe tools such as File-AID, SPUFI, Endevor, Expeditor, and Abend-Aid for development, testing, and debugging. Collaborated closely with the DB2 and system admin teams on database maintenance tasks, contributing to improved performance and scalability. Integrated SQL queries into Python scripts to retrieve and process data for reporting and automation tasks. Led several production implementations, collaborating closely with production support and performance testing teams. Led a team of 8 members in the COBOL v6 migration project, automating module identification and ensuring smooth production deployment. Acted as a Subject Matter Expert (SME) during application migration and modernization projects, including integration with cloud platforms. Skilled in Agile methodology with participation in sprint planning, daily scrums, and retrospectives; experienced in transitioning from Waterfall to Agile practices. Served as Scrum Leader, facilitating daily scrum meetings for the mainframe automation team. Design, code, and test applications for Distribution and Warehouse Inventory applications using COBOL II, CICS, DB2, and MQ. Writing Easytrieve/COBOL/JCL programs for generating ad hoc reports and extracts for the businesspersons for important audits, also for other business improvement purposes. Perform software development and maintenance of IDMS COBOL batch and ADSO dialogs. Expertise in Project Documentation, Flow Charts, Structure Charts, Coding, Testing, and Quality Audit Reviews. Ability to multitask work across different applications. Diverse work experience with different functionalities of the application, with Development and Production Support projects. Worked on CI/CD pipelines, integrating code changes seamlessly, and addressed SONAR lint code issues to improve code quality and maintainability. Recognized for outstanding contributions with awards such as Dean s List of Distinguished Graduate Scholars (2024), Silver, Bronze, and Best Contributor Awards at CGI, and On-the-Spot Award at TCS. EDUCATION MS in Data Science BS in Electrical & Electronics CERTIFICATIONS Natural Language Processing (University of Arizona) AWS Cloud Practitioner TECHNICAL SKILLS Programming & Tools Python, R, SQL, Unix Shell scripting, Apache Spark, Power BI, Tableau, Excel, Toad, Docker, Git, GitHub, ETL Tools Machine Learning Regression, Classification, Clustering, Dimensionality Reduction, Time-Series Analysis, XGBoost, Random Forest, CNN, RNN, LSTM, Transformers, Data Modeling, EDA, Data Pre-processing Natural Language Processing BERT, Word2Vec, TF-IDF, N-Grams, CMUdict, Hidden Markov Models, Large Language Models (LLMs) Image Processing & Computer Vision Image Stitching, Fisheye Correction, Multispectral Image Analysis (RGB + IR) Python Libraries Scikit-learn, TensorFlow, PyTorch, Keras, Pandas, NumPy, SciPy, Matplotlib, Seaborn, OpenCV, Pillow, Plotly Cloud Microsoft Azure, AWS Programming & Scripting COBOL, REXX, Easytrieve, JCL, ESQL, Shell Scripting, ESQL Mainframe Tools & Utilities SDSF, ISPF, IDCAMS, Icetool, CICS, IBM MQ, NDM, Endevor, Abend-aid, CA Workstation,Topaz Databases & Middleware DB2 for z/OS, IBM Integration Bus, Message Broker Project & Workflow Management CI/CD Pipelines (Jenkins, CA Endevor, UrbanCode Deploy), Agile Methodology (Jira, Rally), Waterfall Methodology, ServiceNow COBOL, JCL, VSAM, CICS, EASYTRIEVE, REXX, DB2, Z/OS, Windows, Expeditor, Abend-aid, IBM Developer for Zos, UFT One Endeavor, FILEAID, SPUFI, Toad, GIT, GITHUB, IBM Message Broker, MS Office PROFESSIONAL EXPERIENCE Reliance Matrix - Phoenix, AZ Jul 2024 - Present Mainframe Developer Responsibilities: Utilized the latest technological tools and software systems such as VSAM, COBOL, REXX, DB2, and followed SDLC methodology along with other development/testing tools. Served as a team leader, applying maintenance to existing programs or writing new programs. Major databases utilized included IBM DB2 for batch and online systems. Prepared detailed technical designs based on business requirements and functional requirement documents. Created unit test plans as per technical specification documents. Performed program analysis, coding, testing, and implementation of insurance claims-related applications, many of which were online and developed/maintained using COBOL, CICS, DB2, and VSAM. Debugged defects using mainframe debugging tools like XPEDITER and resolved data-related issues using File-Aid. Enhanced the existing mainframe application to meet new business requirements. Supported off-business hours implementation of new changes in production environments. Worked directly with clients to manage requests, understand requirements, and translate functional requirements into technical specifications through hands-on analysis. Worked on ENDEVOR for version control of the source code in development & test regions. Retrieved source code from the production environment to the test environment using ENDEVOR, and performed various activities such as creating SCL for code promotion. Created packages in ENDEVOR to promote code to the live production environment. Handled incidents related to business and technical issues. Worked under Agile methodology of software development. Participated in sprint planning with other Scrum team members. Provided technical leadership for design, development, and testing during the implementation of mid-sized customer projects or sub-projects within larger engagements. Prepared implementation strategy and provided support for program implementation. Environment: MVS, COBOL, EasyTrieve Plus, File-Aid, CICS, DB2, JCL, VSAM, TSO, ISPF, File Manager, Joblog, ABENDAID, SQL, DB2, Expeditor Centene Corporation, Tempe, AZ Sep 2023 Jun 2024 Mainframe Developer Responsibilities: Analyzed work requests and prepared detailed designs, JCL scripts, and execution plans. Created detailed business and technical specifications, test cases, and log documents. Contributed to six major and four minor releases of the application across various areas, demonstrating strong knowledge of the system and its business rules. Optimized DB2 SQL queries using index scan techniques and applied common table expressions to improve performance in specific areas. Collaborated with DB2 administrators to create DB2 tables by assisting in the development of DDL scripts, incorporating check and foreign key constraints to ensure data integrity. Worked on complex DML queries to fetch data by joining 10 12 tables using joins & nested queries. Acted as the offshore Point of Contact (PoC) for several change requests (CRs) and ensured smooth delivery through to production. Developed a REXX-based tool to prepare Create, Alter, and Drop DDLs for DB2 tables, which was used by developers for table creation. Built a REXX tool (DB2 Query Optimizer) to generate reports for DB2 Unload and Load statistics. Worked with mainframe technologies including COBOL, VSAM, JCL, CICS, DB2, ESP, TSO/ISPF, File Manager, and followed Agile methodology with biweekly iterations, sprint planning, and incremental delivery. Prepared SQL and JCL scripts for data extraction and processing tasks. Environment: Mainframe Technologies, COBOL, DB2, JCL, VSAM, CICS, REXX, ESP, TSO/ISPF, File Manager, Agile Methodology, SQL Cigna, Hyderabad, India Aug 2019 - Jul 2023 Mainframe Developer Responsibilities: Gathered business requirements, performed detailed impact analysis, and identified modules requiring changes, including evaluating potential effects on other components and involving downstream applications when necessary. Created high-level and low-level technical design documents to support required enhancements in COBOL-DB2 programs and related modules. Enhanced COBOL programs and stored procedures; supported production teams in triaging issues to ensure timely resolution, minimizing system downtime, and ensuring production readiness. Performed unit testing and system testing for all code changes, documented test results, and shared them with relevant stakeholders. Collaborated with integration and pre-production testing teams to validate all mainframe code changes, ensuring optimal performance and production readiness. Coordinated with the volume testing team to validate system performance under load and obtained sign-off for production readiness. Presented key insights to clients, highlighting mainframe application performance, enhancements, and ongoing improvements, and obtained client approval for production release. Managed large-scale data processing on mainframes, maintaining data integrity and accuracy through JCL and mainframe utilities. Integrated and validated all elements associated with Change Requests (CRs), ensuring complete traceability and test coverage. Moved elements to version control using Endeavor, maintaining consistency across development and deployment environments. Led end-to-end development and production activities, coordinating implementation calls to ensure smooth deployments across teams. Worked on the archival and purge of insurance claims that were closed and older than six years, for which an entirely new set of batch jobs was developed from scratch to automate the end-to-end process. Oversaw database maintenance for a high-volume claims repository, collaborating with Database Administrators. Designed and implemented parallel batch jobs to efficiently unload and reload over 30 tables into universal table spaces, boosting performance and scalability. Led a team of eight as a technical lead during the COBOL v6 migration project, automating module identification, conducting daily scrums, and ensuring seamless production deployment. Acted as Scrum Leader and Offshore Mainframe Technical Lead, managing project deliverables, leading cross-functional coordination, and ensuring alignment with business objectives. Served as a Subject Matter Expert (SME) for the claims repository mainframe application, contributing to module migration strategies and system modernization efforts. Provided knowledge transition sessions to junior team members on IBM developer and testing tools, ensuring skill enhancement and smooth knowledge transfer. Uploaded documentation to Confluence and maintained project records to ensure compliance and support future reference. Environment: COBOL, JCL, Easytrieve, REXX, CICS, IBM MQ, Db2 for z/OS, SDSF, ISPF, IDCAMS, Icetool, Endevor, Abend-aid, CA Workstation, IBM Developer for z/OS, UFT One, IBM Integration Bus (IIB), Message Broker, Jenkins, Endevor, Jira, Rally, ServiceNow, Git, GitHub, Microsoft Excel, Word, PowerPoint, Confluence, Agile Software AG, Hyderabad, India Sep 2017 Jul 2019 Mainframe Developer Responsibilities: Resolved production-related abends in alignment with severity timelines. Executed analysis, design, development, testing, and implementation tasks to support the Mainframe system. Handled change requests by adhering to the full software development life cycle from analysis through production deployment. Facilitated requirements and technical clarifications by communicating with the business development team and SMEs. Contributed to code and peer reviews; validated test plans and results developed collaboratively with the team. Collaborated with the team to plan, schedule, and execute tests in the system test environment. Designed comprehensive test plans and risk analysis documents; authored test cases and jobs, executed them, and compiled reports for unit and integration testing analysis. Operated within an Agile methodology framework involving biweekly iterations and sprints. Managed Agile work items, including user stories and technical tasks related to design, coding, testing, and application support. Led retrospective and daily stand-up meetings to identify blockers, analyze defects, and implement resolutions for persistent project issues. Environment: IBM Mainframe, COBOL, JCL, Agile Scrum, SDLC, Impact Analysis, Unit Testing, Integration Testing, Risk Analysis, Code Reviews, Defect Resolution, Requirement Gathering, Change Requests, Test Plan Documentation, Production Support, Sprint Planning, Retrospectives AIG, Chennai, India Mar 2014 - Aug 2017 Mainframes Developer Responsibilities: Conducted requirement gathering and impact analysis to assess technical implications and guide solution design. Enhanced mainframe modules seamlessly integrate new third-party vendors into the commercial insurance system. Managed ServiceNow incident tickets related to reports and application functionality, ensuring the timely resolution of issues. Played a critical role in production support by actively monitoring and triaging daily batch jobs, identifying performance bottlenecks, and implementing optimizations to reduce job run times and enhance efficiency. Proactively diagnosed and triaged production issues, identifying root causes and resolving them promptly to ensure minimal system downtime and business continuity. Created detailed knowledge base articles and troubleshooting guides to streamline issue resolution processes, improve team productivity, and reduce the recurrence of incidents. Coordinated with cross-functional teams to ensure smooth batch job execution, minimizing delays, and ensuring timely data availability. Provided clients with detailed, data-driven execution status reports, explaining job outcomes, failure points, and resolutions. Facilitated regular client meetings to address concerns, offer insights, and maintain transparency in system performance. Collaborated with quality assurance and deployment teams to test and validate new integrations and reports, ensuring they met functional and performance criteria before production rollout. Conducted root cause analysis (RCA) for recurring issues in production, implemented permanent fixes, and enhanced system stability to prevent future occurrences. Actively contributed to project milestones and reported weekly status updates to senior management, ensuring visibility into progress, challenges, and deliverables. Managed and archived documentation on SharePoint, ensuring accurate project records and compliance with organizational standards for traceability and auditing. Environment: COBOL, JCL, Easytrieve, Db2 for z/OS, VSAM, SDSF, ISPF, IDCAMS, Icetool, Endevor, Abend-aid, CA Workstation, Endevor, ServiceNow, Microsoft Excel, Word, PowerPoint, Agile Cigna, Chennai,India Aug 2012 - Feb 2014 Mainframes Developer Responsibilities: Gathered and analyzed client requirements; conducted in-depth impact analysis to support solution design. Prepared high-level and low-level technical design documents. Migrated FOCUS programs to COBOL and Easytrieve, ensuring business logic was preserved. Optimized SQL queries and data processing to enhance system performance. Developed and executed unit test cases and test plans based on the requirement conditions. Performed regression and System Integration Testing (SIT) to validate module and system-level compatibility. Reviewed deliverables and created comprehensive Unit Test Result Documentation. Integrated and validated all elements for Change Requests (CRs), deployed elements using the version control tool Endeavor. Created production deployment packages, including JCL modifications and execution parameters. Provided on-call support for job cycle monitoring, Abend resolution, and root cause analysis. Resolved post-migration defects and ensured data integrity through rigorous validation. Collaborated with cross-functional teams for seamless development, testing, and deployment. Documented migration challenges, resolutions, and shared best practices via internal knowledge-sharing platforms. Uploaded documentation to SharePoint and maintained project records. Environment: COBOL, JCL, CICS, Easytrieve, Focus, Db2 for z/OS, VSAM, SDSF, ISPF, IDCAMS, Icetool, Endevor, Abend-aid, Endevor, Microsoft Word, PowerPoint, Waterfall Keywords: continuous integration continuous deployment message queue business intelligence zos active directory rlang microsoft Arizona California