Satish Kumar Nalla
Peoria
Summary
Seasoned Mainframe Application Developer with over 15 years in financial and insurance sectors. Expertise in COBOL, JCL, DB2, and VSAM, focusing on development, enhancement, and production support. Analyzes business requirements to design technical solutions that enhance application performance and maintain technical documentation. Experienced Senior Software Engineer leading cross-functional teams and driving process improvements to increase team efficiency.
Overview
16
16
years of professional experience
1
1
Certification
Work History
SR SOFTWARE ENGINEER
EPAM Systems
Peoria
01.2023 - Current
- Analyze business and technical requirements, and translate them into mainframe solutions (COBOL, JCL, CICS, DB2, VSAM)
- Design, code, and unit test new batch and online programs according to defined standards and SDLC.
- Develop and maintain JCL, PROCs, and scheduling changes for batch jobs.
- Work with DB2 (and/or other mainframe databases) to design tables, write SQL, and optimize queries and access paths.
- Perform debugging, performance tuning, and root‑cause analysis for issues in batch, CICS, and interfaces.
- Prepare unit test cases, execute unit and integration testing, and document test results.
- Support system testing and user acceptance testing by fixing defects and clarifying functionality.
- Participate in code reviews, adhere to coding standards, and contribute to quality improvement.
- Created and maintained technical design documents, program specifications, and operations run-books to support project clarity and execution.
- Enhanced mainframe application event flows and batch cycles by resolving long outstanding stories, spikes, and bug fixes in Jira.
- Work closely with business analysts, architects, QA, and operations teams to clarify requirements and design.
- Client: Edward Jones
Software Developer
Indotronix International Corp
Glendale
09.2019 - 12.2022
- Converted 128 legacy mainframe jobs to Java batch using an open-source converter tool, managing JCL conversion, sorting/merging, EDCDIC to ASCII conversion, variable length handling, packed decimal fields, FTP, and email integration.
- Executed end-to-end testing of policy transaction flows from Guidewire feed to Documaker ODSE, ensuring accurate processing of critical data.
- Resolved production issues and bugs during batch cycle runs, performing in-depth analysis to identify and correct data discrepancies.
- Developed and tested MRL variables in Oracle Documaker ODEE platforms, promoting variables across lower and production environments.
- Collaborated with business analysts and stakeholders to clarify requirements and document changes, supporting legacy batch systems for Property and Casualty insurance applications.
- Consulted on design, development, configuration, and testing activities, contributing to application stability and reliability.
- Conducted detailed SIT and EDUC testing, maintaining comprehensive test cases and preserving results for quality assurance.
- Client: California Casualty
Cobol Developer
Indotronix International Corp
Concord
08.2018 - 08.2019
- New HEIGHTS is a large-scale client/server-based system with a Graphical User Interface (GUI) that supports the workers who aid citizens of New Hampshire who seek assistance in the form of cash, food stamps, medical assistance, childcare, emergency assistance, etc.
- New HEIGHTS determines eligibility for the clients based on the information captured from the client. Once eligibility is determined the New HEIGHTS system interacts with a variety of other systems regarding eligibility.
- Maintained and developed project for Deloitte Consulting, ensuring alignment with client needs.
- The purpose of this project is Cobol Batch migrations which consist of six batch sub-systems to the newly provisioned Micro Focus environment running on zLinux.
- Established Micro Focus environment on zLinux, facilitating efficient deployment of mainframe workloads.
- Micro Focus Enterprise Server provides an application deployment environment for re-hosting IBM mainframe applications that have traditionally run on IBM z/OS environments.
- This project is to provide the infrastructure to run mainframe workloads on a distributed environment and integrate mainframe applications with contemporary technologies such as Java, and SOA, and support the latest platforms.
- Analyzed existing source code functionality and converted it to Micro Focus Cobol source modules, enhancing system compatibility.
- Perform root-cause analysis of any issues that arise during Integration, System and Regression testing and providing resolutions.
- Resolving data issues which arise during data conversion such as packed decimal, null pointer, signed values etc.
- Resolving connectivity issues such as with DB2, Java, SFTP, and other downstream sub systems.
- Managed client relations for Deloitte and New Hampshire State, ensuring project alignment.
Cobol Developer
Mindtree Limited
Boston
09.2016 - 07.2018
- Homesite Insurance Group is a one of the leading home insurance provider company from American Family Insurance.
- Homesite has developed multiple insurance solution products to quote a policy, to buy a policy, to manage, cancel or renew existing policies.
- Horizon is a backend administration tool to modify/update and reinstate Homesite policies in current, and renewal terms.
- Processed ITR requests across states/regions to implement or remove business rules and discounts.
- Preparing technical design documents from the requirements.
- Provide professional consultation across design, development, configuration and testing activities.
- Resolve QA and UAT defects within turnaround time and minimize repetitive errors and delivery quality deliverables.
- Identified and re-engineered functions, delivering effective solutions.
- Acted as the primary client contact for Homesite Insurance.
Onsite Lead
Mindtree Limited
Houston
11.2014 - 08.2016
- Worldsource Backend jobs process feeds from various streams from commercial line, personal Line, master policies, under layer, friendly front, referral policies booked by underwriters at Domestic and International AIG offices.
- Served as onsite point of contact for reconciliation issues between booked policies and those processed by downstream accounting department, facilitating clear communication and resolution.
- Point of contact for all production related problems.
- Prepared work schedule and assigned tasks to offshore team to ensure timely completion of project deliverables.
- My day-to-day work involves analyzing rejected policies and providing cause of analysis to business users.
- Perform quarterly release for production issues, bug fixes and enhancements.
- Conducted impact analysis of application for business and functional requirements, identifying potential challenges and opportunities for improvement.
- Documenting Test Scripts for testing new functionality respective to the assigned project.
- Involved in Implementation of Micro Focus Cobol conversion to Net Express and Sybase migration as part of Windows 2012 Server migration Project.
- Acted as the primary client contact for AIG.
Technical Lead
Mindtree Limited
Bangalore
11.2010 - 09.2014
- Advance Risk Capabilities Group under Global Risk Management System for American Express Credit cards.
- Globally, this system serves the request for consumer and corporate card sectors of all the countries of the world in the form of BAU, SQP and DIIR requests.
- GRMS system acts as an interface between business and technology.
- All ideas from ARC business partners are converted into functional modules and implemented in AET.
- We apply/remove any business strategy rule based on business requests.
- Models are created and maintained to check the behavior of customers.
- Coordinated project schedules, led conference calls, and tracked project status to ensure alignment with project goals.
- Performing impact analysis of application for a given business or functional requirement.
- Documented test scripts for new functionality in the project.
- Executing new functionality Test Scripts and validate test results.
- Work closely with Business Analyst on providing impacts to existing system functionality for new proposed client Change Requests.
- Involved in gathering Business requirements, Initial Analysis of existing request Programs and Process flow.
- Involved in Unit, Integration, System and Regression testing of batch programs, Implementation and post Implementation support.
- Designed test cases, test data, testing and documented test results.
- Developed effort estimations for clients based on request type, complexity, and resource workload to facilitate informed decision-making.
- Participated in CMM level quality audits and strictly followed the client's quality process.
- Served as primary contact for offshore inquiries, managed schedule tracking, and ensured quality assurance processes were followed.
- Client: American Express
SR. DEVELOPER
MELSTAR GROP
Bangalore
03.2010 - 11.2010
- WellPoint, Inc. is the largest health benefits company in terms of commercial membership in the United States.
- Through its nationwide networks, the company delivers many leading health benefit solutions through a broad portfolio of integrated health care plans and related services, along with a wide range of specialty products such as life and disability insurance benefits, pharmacy benefit management, dental, vision, behavioral health benefit services, as well as long term care insurance and flexible spending accounts.
- The WGS 2.0 Membership System is part of the WGS 2.0 Family of Systems and is responsible for the Enrolment Activities related to Members and Clients.
- CAST Tool was used to run on Source code to get the list of violations reported on top CPU consuming jobs which were causing performance issues.
- Optimized code according to IBM standards, improving application performance and compliance.
- Developed technical specifications for the analyzed modules.
- Developed strategy for optimizing long running CPU jobs, targeting reduction in processing time and resource usage.
- Fixing violations suggested by the CAST tool. Showed a significant reduction in CPU usage around 30 pct. to client.
- Coordinated communication with IBM, resulting in improved project collaboration and outcomes.
Education
Master in Computer Application -
Sikkim Manipal University
Chennai01-2010
Bachelor of Computer Applications -
Nagarjuna University
Guntur09-2002
Skills
- COBOL
- COBOL
- JCL
- SQL query optimization
- Mainframe debugging
- Batch processing management
- Software testing methodologies
- Analyzing business requirements
- Project documentation practices
- Team player
- Problem solving
- Time management
- Enterprise application design
- End-to-end testing
- JCL
- VSAM
- IMS-DB/DC CICS
- Assembler
- Micro Focus Cobol
- XPEDITER
- ABEND-AID
- FILE-AID
- DB2
- Sybase
- Document automation tools
- Oracle Documaker
- DB2-Connect
- SQL-PA
- SPUFI
- QMF
- ECM Archive
- Stellent
- Object-oriented programming
- Scripting languages
- Microfocus
- Software development lifecycle
- CHANGMAN
- PUPS
- Endeavor
- MOBIUS
- Control-M
- ZEKE AND ZENA Scheduling
- JIRA
- HP QC
- Micro Focus Eclipse
- GIT
- WIN-SCP Putty
- Release Engineering
- MS Visual Studio
- Animator
- CAST
- Strobe
- Application Performance Analyzer
- Shell scripting
- Troubleshooting
- Performance tuning
- Project documentation
- Problem simulation
- Analytical skills
- Communication skills
Certification
- Certified IBM DB2 Database Associate
- Guidewire Policy Center Training
Immigration Status
H1B, 12/28
Timeline
SR SOFTWARE ENGINEER
EPAM Systems
01.2023 - Current
Software Developer
Indotronix International Corp
09.2019 - 12.2022
Cobol Developer
Indotronix International Corp
08.2018 - 08.2019
Cobol Developer
Mindtree Limited
09.2016 - 07.2018
Onsite Lead
Mindtree Limited
11.2014 - 08.2016
Technical Lead
Mindtree Limited
11.2010 - 09.2014
SR. DEVELOPER
MELSTAR GROP
03.2010 - 11.2010
Master in Computer Application -
Sikkim Manipal University
Bachelor of Computer Applications -
Nagarjuna University