Built video/audio preview functionality for AI-assisted customer survey platform, implemented cross-browser WebRTC + permission APIs to streamline survey setup and improve customer activation rates.

• Developed AI-powered Alexa skill recommendation engine using linear regression to match users with 15+ voice applications, analyzing user features to predict subscription likelihood and driving 10% increase in adoption.

• Designed and executed A/B tests across web and voice platforms, achieving 40% increase in subscription conversions through data-driven UI/UX optimizations using React, TypeScript, and DynamoDB.

• Built 5 interactive voice-first games for Alexa platform, implementing game logic, state management, and user engagement features using Node.js, Express, and PostgreSQL.

• Created developer tools and plugins for proprietary voice game engine, streamlining Amazon APL (Alexa Presentation Language) integration and improving team productivity.

• Led development of company-wide UI component library with 50+ React/TypeScript components, enabling consistent design system adoption across all teams during major platform redesign.

• Implemented feature flagging with LaunchDarkly to A/B test UI redesign, optimizing React rendering performance and reducing time to first paint.

• Established comprehensive testing practices using Jest and Cypress, ensuring component reliability and preventing regressions across the design system.