• Migrated React-based web applications to TypeScript.

• Worked with the design team to implement pixel-perfect responsive designs using CSS3, media queries, flexbox, CSS Modules, and preprocessor SASS.

• Performed Cross Browser Testing to ensure that React, Gatsby.js, or Next.js application code was properly polyfilled and working as expected on various browsers and operating systems.

• Utilized the Google Dev Tools Lighthouse feature to gather information related to Performance, SEO, Best Practices, and Accessibility and implemented suggestions to improve search engine position.

• Wrote unit, integration, and end-to-end (e2e) tests for Express.js back-end and React Components on the front-end using Cypress and Jest to improve test coverage.

• Created, configured, and maintained Linux-based Nginx servers to efficiently serve Single Page Applications (SPAs) and static content.

• Used React Dev Tools Performance Profiler to gain a finer-grain understanding of component rendering lifecycles and implemented performance optimizations where possible.

• Authored AWS service orchestration script using TypeScript to parallelize the generation of the static data required by our statically built web applications and improved build time by an exponential factor.

• Maintained infrastructure on AWS that consisted of various Elastic Beanstalk environments, CI/CD pipelines, and supporting services.

• Developed a 27,000-page full-stack directory application with geospatial search capabilities using React, Redux, Express.js, PostgreSQL, Docker, and AWS.

• Improved performance of web applications by identifying rendering bottlenecks through the use of the React Dev Tools Performance Profiler.

• Improved accessibility of React components that lacked semantic HTML5 tags through the application of ARIA labels and WAI-ARIA Roles, Properties, and States.

• Styled React components with pixel-perfect accuracy and added responsive layout with CSS3, SASS, and CSS Modules.

• Performed Single Page Application-based SEO research and implemented best practices using React-based static site generators Next.js and Gatsby.js.

• Implemented various data collection scripts using Selenium to automate the gathering of actionable data.

• Constructed continuous delivery pipelines on AWS using CodePipeline and CodeDeploy to automatically deploy changes made to application code.