Senior Software Development Engineer with 10 years of experience delivering scalable React Native and web applications, UI systems, and Java-based integrations in enterprise environments. Strong ownership across design, development, testing, CI/CD, and production support, with a focus on reliability, performance, and accessibility. Currently contributing to Walmart’s Sidekick app within Me@Walmart, enabling store leaders to plan shifts, assign tasks, and monitor associate execution in real time. Led modernization initiatives (React Native upgrades, navigation refactors, pipeline stabilization) and improved test coverage and production stability through end-to-end engineering practices across Product, UX, DevOps, and Backend teams.

KARTHIK BALASUBRAMANYAM

Senior Software Development Engineer with 10 years of experience delivering scalable React Native and web applications, UI systems, and Java-based integrations in enterprise environments. Strong ownership across design, development, testing, CI/CD, and production support, with a focus on reliability, performance, and accessibility. Currently contributing to Walmart’s Sidekick app within Me@Walmart, enabling store leaders to plan shifts, assign tasks, and monitor associate execution in real time. Led modernization initiatives (React Native upgrades, navigation refactors, pipeline stabilization) and improved test coverage and production stability through end-to-end engineering practices across Product, UX, DevOps, and Backend teams.

Available to hire

Senior Software Development Engineer with 10 years of experience delivering scalable React Native and web applications, UI systems, and Java-based integrations in enterprise environments. Strong ownership across design, development, testing, CI/CD, and production support, with a focus on reliability, performance, and accessibility.

Currently contributing to Walmart’s Sidekick app within Me@Walmart, enabling store leaders to plan shifts, assign tasks, and monitor associate execution in real time. Led modernization initiatives (React Native upgrades, navigation refactors, pipeline stabilization) and improved test coverage and production stability through end-to-end engineering practices across Product, UX, DevOps, and Backend teams.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

Javanese
Advanced

Work Experience

Software Engineer III at Wal-Mart Inc
August 1, 2021 - August 1, 2026
Developed and maintained React Native features for Walmart’s Sidekick mini-app within Me@Walmart, supporting shift planning, work assignment, and real-time task monitoring across store operations. Built reusable, accessible UI component systems using React Hooks and atomic design principles, and delivered template-driven onboarding for dynamic goal/action rendering. Integrated Athena GraphQL queries and backend APIs to fetch and transform operational data while reducing redundant service calls. Refactored legacy architecture using a navigation-based Planning Container restructuring to improve maintainability and scalability. Led React Native/Expo upgrades, stabilized iOS/Android builds, and resolved production issues including infinite loading, navigation freezes, rendering bottlenecks, keyboard interaction failures, rate limiting, and upgrade regressions. Improved CI/CD reliability by addressing Looper/semantic-release/versioning/build generation issues and enabling hot-fix deployme
Sr. IT Developer at Marlabs Inc
August 1, 2020 - August 1, 2021
Developed cross-platform React Native applications for health insurance clients, building reusable components with React Hooks and delivering UI features such as tab bars, map view, image/document pickers, date pickers, sign-in/out flows, and navigation. Refactored app navigation using React Navigation to replicate native interactions.
Sr. IT Developer at Florida Blue
August 1, 2020 - August 1, 2021
Worked on development efforts supporting mobile and/or web systems for health insurance operations, collaborating with engineering teams to deliver and maintain features and improve quality.
React Native Developer at Marlabs Inc
April 1, 2020 - August 1, 2020
Built an inventory management React Native application and handled large data flows using Redux and React Navigation. Implemented i18n for currencies, languages, and date-time settings for 10+ countries. Refactored error handling with React Native Alert dialogs to reduce user input errors. Used functional programming utilities (Ramda, Lodash) to improve performance. Improved test coverage with Enzyme and Jest, increasing usage under core business operations. Collaborated with a global team for delivery and used Jira to track bugs and reduce downtime.
Mobile Developer at Marlabs Inc
December 1, 2018 - April 1, 2020
Developed a reusable, maintainable React Native component base for insurance applications and performed native deep integrations for Android and iOS. Managed build setup for iOS (provisioning profiles and Info.plist) and Android (Gradle configuration) to run applications. Implemented Flux architecture using Redux, applied middleware patterns for RESTful data retrieval, and built pixel-perfect UI across device sizes with Flexbox. Resolved dependency conflicts and improved UX by reducing codebase and HTTP requests. Enhanced accessibility across the application, increasing user base and providing A11Y checklists and developer/test best-practice guidance aligned to WCAG AA. Received a Certificate of Appreciation for contributions to Florida Blue’s My Health Link application.
Programmer Analyst at Marlabs Inc
April 1, 2018 - August 1, 2021
Designed UI custom layouts and components following Material Design guidelines. Implemented Google Maps/Places functionality using Google Cloud and RESTful APIs, handling nearby checkpoint JSON data. Built and executed Android builds using Gradle with caching of remote metadata/artifacts and transitive dependency resolution to optimize build performance and tests.
Software Developer at IKnow LLC
August 1, 2017 - April 1, 2018
Worked with Alfresco Content Services and Activiti BPM to design and implement solutions involving content models, taxonomy, search, and UI integrations. Managed content processes and workflows using Alfresco Share client and Activiti Engine exposure.
Associate Software Engineer at Torry Harris Business Solutions
April 1, 2014 - June 1, 2015
Designed and developed SOA web services and APIs using WSO2 API Manager and CORDYS BPM tools. Implemented cache optimizations for web services with frequent database access. Added Log4j logging to monitor execution of web services within CORDYS BPM.

Education

Master of Science in Computer Science at Stevens Institute of Technology, New Jersey
January 1, 2017 - December 31, 2017
Bachelor of Engineering in Computer Science & Engineering at Visvesvaraya Technological University, Karnataka, India
January 1, 2013 - December 31, 2013

Qualifications

Add your qualifications or awards here.

Industry Experience

Software & Internet, Healthcare, Retail