- Coordinated with developers to implement the admin interface using React.js, React-Router, Material UI, Cypress, and Enzyme, enhancing usability and streamlining backend management. - Tackled performance bottlenecks and user pain points in the participant profile app through a React.js migration. Scored a 35% speed boost and a smoother admin experience. - Developed and deployed an optimized GitHub Action, cutting test runtime from 20 to under 10 minutes, boosting project efficiency. - Crafted a GDPR-compliant cookie management tool using JavaScript and Next.js, empowering users with effortless cookie control and a smoother website experience. - Collaborated with the development team through code reviews, resulting in improved code quality and increased adoption of coding best practices. - Orchestrated a complex migration of a mapping application to Next.js, TypeScript, and ESRI SDK, achieving a substantial load time reduction of 1s and contributing to significant cost savings. - Demonstrated expertise in writing comprehensive Unit, Integration, and End-to-End (E2E) tests for features using jest and cypress, ensuring high code quality and robust functionality.

- Resolved critical UI issues, achieving 100% SLA adherence and resulting in a remarkable 50% reduction in out-of-SLA tickets, considerably improving customer experience and satisfaction. - Implemented a comprehensive upgrade for the Newsletter feature, resolving cross-email platform issues, introducing Dark Mode functionality, and implementing a responsive design. - Upgraded Next.js from version 9 to version 10, collaborating with a cross-functional team, enhancing skills in version control and framework updates; minimized downtime and elevated website performance by implementing optimized code. - Implemented client-side validations across many features to enhance application security, ensuring elevated error handling and user experience. - Analyzed and addressed high-priority application errors identified through Sentry, considerably improving system stability and performance; led to a 25% decrease in user-reported incidents, bolstering overall customer satisfaction.

- Teamed up with designers to create and execute ETL projects using Ab Initio, Shell scripting, and SQL. Streamlined data extraction, transformation, and loading from many data sources. - Built a Full Stack web app using Node.js and MongoDB to track and manage developers' errors in the project's development phase. Elevated quality control and minimized errors as the sole developer on this initiative.