Madhan Sivasubramanian
Reston,VA
Summary
Senior Software Engineer with a proven track record at Walmart, specializing in React and React Native development. Expert in enhancing app performance and mentoring junior engineers, achieving 90% unit test coverage. Demonstrates strong leadership and coding skills, with a knack for solving complex issues and driving project success.
Overview
17
17
years of professional experience
Work History
Senior Software Engineer
Walmart
09.2022 - Current
- As a developer I am involved in writing React Native code for app development
- Involved in measuring app performance between Redux and Zu Stand for WebSocket transactional data
- Written Swift code for IOS support for React Native app development
- Followed the latest React Native concepts and JavaScript ES6 statements
- Implemented Flat List, Section List, Pressable components effectively at appropriate places in the app
- Unit testing is done for each component with 90% coverage
- Mostly used Render from React native Testing Library
- Extensively worked on WebSocket’s for seamless transmission of transactions and alerts to app
- Implemented the coding pattern for WebSocket in React native
- Mentored junior engineers to write code in React effectively
- Invested quality time on resolving complex issues thrown during app development
Software Engineer 2
JC Penney
01.2022 - 09.2022
- As a developer I involved in writing ReactJS code for Find More (replica of JCPenney.com)
- Given my 100 percent development contribution for converting VeriFone to Ingenico credit card device in entire JCPenney stores for swiping cards and other purchasing activities
- Ingenico credit card devices will be available in all the purchasing hub in JCPenney stores, where the customer can make payments for the item they are buying
- Followed the redux principles to store all the states and use it efficiently in all the components
- Each section in Find More (ex, Cart Page, Checkout Page, PDP page) are developed as individual microsites
- The developer is responsible for deploying the changes via Jenkins
- We effectively use GIT commands to create branch, add, commit, push files
- Unit testing covers all sections of code in the component
Senior Applications Programmer
Precision Management Group, INC
02.2020 - 01.2022
- As a developer I involved in writing code in React for attractive UI
- Developed extensive interfaces which can be used throughout the applications
- Used Ant Design UI in my application with bootstrap CSS
- Implemented Redux for state management
- Used React Router DOM for page navigation
- React Toastify has been used for Success, Error notifications
- Effectively used React Hooks like Use State, Use Effect, Use Dispatch, Use Selector, Use History for functional components
- Implemented CI CD pipeline in Azure and whenever the files are pushed to GIT, the files get published to the environment
Associate Architect
Virtusa
01.2020 - 02.2020
- As a developer I grasped the solution very fast and started fixing bugs
- In two weeks, I fixed 25 bugs and sent for code review and got approved
- I recommended DND Draggable NPM package for dragging the components
- I modified their overlay components and sent proper values to the NPM package
- I worked on server side (C#) and provided options to download the created pages
- I fixed many style issues with media queries
- Constantly communicated to the client about my progress and earned appreciations
Senior Applications Programmer
Precision Management Group, INC
03.2018 - 01.2020
- As a developer I am involved in creating website layout/user interface by using standard HTML/CSS practices
- Create and maintain software documentation
- Gather and refine specifications and requirements based on technical needs
- Integrate data from various back-end services and databases
- Developing or validating test routines and schedules to ensure that test cases mimic external interfaces and address all browser and device types
- Created a ReactJS application to view the commercial Auto policies with semantic UI
- Developed ARM templates for deploying multiple VMs and designed VM scale sets
- Created Azure Automation runbook to start and stop VM
- Implemented Logic apps, functions and Azure search
- Used Azure Data Lake for various data manipulation purpose
- Used Cloudyn tool for cost calculation and Microsoft message Analyzer for viewing logs
Senior Associate
Cognizant Tech SOLN, USA
04.2015 - 03.2018
- Understanding business objectives and implementation of business logic
- Involved in various phases like design and development of Software development life cycle(SDLC)
- Voluntary Disenrollment is an application which automates triggering of transactions to CMS
- Automates processing of disenrollment or cancellation in enrollment system
- Involved in developing the application with MVC, Angular JS and Bootstrap technologies
- Developed an attractive UI using Bootstrap and most of the effective code logics are achieved using angular JS in client side
- Server hits were highly reduced
- Variety of tab controls have been implemented using angular JS CSS
- Documented all the changes accurately and properly updated to clients at a timely basis
- Added lot of new functionality on website
Technology Lead
Infosys Limited, USA
07.2014 - 04.2015
- Developed optimized stored procedures by avoiding nested loops
- Found an alternative for inked server concept
- Implemented effective queries
- Created indexes on selective columns to speed up queries and analyses in SQL Server Management Studio
- Created triggers to update the table whenever required action takes place
- Directly involved in development of product
- Interacted with third party vendors, clients, and partners to ensure the success of Deployment and release made
- Involved in planning of timely deliverables, scheduling tasks and working in a mode that the project timelines are met
- Designed and Developed security measures for projects
- Responsible for Designing user interface for web forms
- Documented my entire work to facilitate the knowledge transfer process to the clients
- Written a light weight dot net code, where the hits to server will be very minimal
- Designed and developed views using models, controllers
- Co-ordinate with offshore team for delivery
- Review the code delivered from offshore
Technology Analyst
Infosys Limited India
03.2011 - 07.2014
- Created views as required by front-end developer for easier implementation on ASP.net pages and wrote instead-of triggers on those views to provide efficient data manipulation
- Wrote stored procedures and User Define scalar Functions (UDFs) to be used in the SSIS packages and SQL scripts
- Prepared documentation conforming to the IT SDLC starting from Requirement gathering, Design Development and Deployment by internal entities
- Applied Company standard analysis, architecture, and development techniques to assist in providing optimum solutions
- Part of the team implementing detail integration test plans
- Interacted with third party vendors, clients, and partners to ensure the success of Deployment and release made
- Implemented Error Handling logic for catching exceptions and routing failed messages to concerned parties
- Interact with other Development teams in the design and deployment of Dot net solution
- Played critical role in trouble shooting and fixing issues with WCF services, web forms and SQL stored procedures in different projects
- Worked closely with QA team to meet various testing goals and deadlines for each build
- Involve in writing Junit test cases
Programmer Analyst
Cognizant Tech Solutions, India
12.2009 - 02.2011
- Analyzed the web pages of Airlines and the current business happenings in Air industry
- Interacted with clients and had multiple sessions in order to derive effective intranet airline application
- Implemented an attractive UI which displays the Clients airlines photographs in a fashionable manner
- Written a light weight dot net code, where the hits to server will be very minimal
- Uses SSIS package to store the travel logs on logging database
- Effectively uses SSRS reports to display the travel history in various scenarios
Junior Project Analyst
PROCON Systems Pvt Ltd
09.2007 - 11.2009
- Designed and implemented the exception handling throughout the application
- Created attractive UI using C#.net windows application
- Used cartoon logos to enrich the screen appearance
- Involved in collecting Requirement, Designing of Database
- Involved in customizing the Win Forms Data Grid
- Created Stored Procedures in SQL Server 2008 database
- Involve in Code walk through, Debugging and Error fixing
- Involve in knowledge sharing sessions on Project related concepts for new entrants into the Project
- Interacted closely with the business analysts in finalizing the requirements
- Developed new user interface for new features and functionality to the application
- Provide technical support to all production systems
Education
Bachelors - Computer science
Anna University
Chennai, India01.2007
Skills
- React
- React Native
- Redux
- Zustand
- Javascript
- Typescript
- HTML / CSS
- Tailwind CSS
- Appium
- Jest
- Java Programming
- Spring Boot Development
- C#
- Net Core Development
- Angular 18
- SQL
- PostgreSQL
- Azure
Additional Projects
Air BNB ReactJS web application, https://github.com/sivasubm1/air-bnb
ReactJS Redux Ecommerce Application, https://github.com/sivasubm1/ShoppingAppwithReactRedux
Timeline
Senior Software Engineer
Walmart
09.2022 - Current
Software Engineer 2
JC Penney
01.2022 - 09.2022
Senior Applications Programmer
Precision Management Group, INC
02.2020 - 01.2022
Associate Architect
Virtusa
01.2020 - 02.2020
Senior Applications Programmer
Precision Management Group, INC
03.2018 - 01.2020
Senior Associate
Cognizant Tech SOLN, USA
04.2015 - 03.2018
Technology Lead
Infosys Limited, USA
07.2014 - 04.2015
Technology Analyst
Infosys Limited India
03.2011 - 07.2014
Programmer Analyst
Cognizant Tech Solutions, India
12.2009 - 02.2011
Junior Project Analyst
PROCON Systems Pvt Ltd
09.2007 - 11.2009
Bachelors - Computer science
Anna University
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