Koteshwar Billa

Sr. React JS Developer at Verizon

Participated with end users and business analysts to understand requirements; reviewed and approved design work; led front-end development using React.js/Redux, HTML5, CSS3, and Bootstrap; built scalable micro-frontend architecture with module federation and Webpack 5 to enable independent deployment; migrated a monolithic frontend to a micro-frontend approach, improving load times and developer velocity; implemented container-based architecture with Docker and integrated with AWS for static assets; collaborated with backend teams to align API contracts and implemented test automation and CI/CD in Azure DevOps; maintained reusable, testable UI components and library standards.

React JS Developer at IBM

Built rich front-end applications using React.js/Redux, TypeScript, HTML5 and CSS3; implemented component libraries and centralized state management; automated end-to-end UI tests in a BDD workflow (SpecFlow, Cucumber) and improved test clarity; contributed to isomorphic/SSR UI strategies and GraphQL data fetching; worked with Ember Data and Ember-Components in some capacity; collaborated with cross-functional teams to ship features with CI/CD in Azure DevOps; delivered scalable UI for enterprise applications and integrated with Node.js services.

React JS Developer at Verizon

Developed single-page applications using React.js and Material UI; integrated RESTful services to communicate with backend systems; maintained state with Redux; implemented UI components, responsive layouts, and cross-browser compatibility; created login portal and agent portal screens; set up unit tests with Jasmine and contributed to CI/CD pipelines in Azure DevOps; containerized services with Docker and collaborated with backend teams on API contracts.

React JS Developer at Comcast

Designed and developed front-end using React.js/Redux and HTML5, CSS3; implemented SPA architecture; integrated REST/SOAP services; built login and agent portals; leveraged AngularJS for legacy components; implemented containerization with Docker and contributed to automated builds and deployments; built and maintained reusable components and libraries to ensure UI consistency across projects.

UI Developer at Walmart

Developed dynamic web pages using HTML/HTML4, CSS2/CSS3, jQuery, Bootstrap; designed responsive interfaces using SASS; developed SPA UI with Angular.js; created mock services in Node.js; implemented cross-browser compatible layouts and SEO-friendly pages; collaborated in agile environments to deliver web features on time.

Software Engineer at Eyeglobal Pvt Ltd – Hyd, India

Designed and developed domain models and schemas using UML; built back-end components in Java with multi-threading; developed JSP/Servlets and REST web services; worked with Node.js for server-side tasks; implemented a Hadoop data pipeline for analytics; set up development environments and contributed to full SDLC activities.