• Engineered an interactive transaction chat interface in Next.js, collaborating with product teams to integrate the OpenAI API for dynamic spending insights, increasing customer engagement by 17%.

• Partnered with UX designers to build a seamless frontend onboarding flow, connecting Stripe and Plaid via lightweight Node.js endpoints to reduce account verification time to under 45 seconds.

• Developed custom BFF (Backend for Frontend) layers to parse ledger data for React.js clients, reliably handling 50,000+ daily asynchronous UI requests while aligning API contracts with backend engineers.

• Refactored core transaction history components to use server-side rendering, leveraging TypeScript for strict type checking to successfully decrease First Contentful Paint (FCP) by 29%.

• Advocated for secure coding during peer reviews and authored Jest UI test suites, implementing secure JWT client storage to align frontend architecture with PCI-DSS and SOC2 standards.

• Designed a responsive subscription dashboard in React.js, establishing clear API agreements with backend developers to enable 25,000+ active users to manage renewals seamlessly.

• Modified existing Python backend endpoints to better aggregate merchant data for the UI, resolving client-side processing delays and reducing dashboard freezing by 33%.

• Teamed up with data science units to translate complex vector search outputs into dynamic frontend features, delivering intuitive, personalized credit card recommendations for end-users.

• Monitored client-side errors using Datadog during high-traffic promotional events, showcasing strong problem-solving by rapidly resolving 4 major UI bugs within a strict 2-hour SLA.

• Upgraded the internal merchant portal interface to improve usability, writing foundational unit tests in Jest that successfully increased UI code test coverage by 24%.

• Containerized local frontend build environments and mock backend servers utilizing Docker, standardizing the setup process for a cross-functional team of 12 engineers.

• Actively participated in daily Agile stand-ups and code reviews, incorporating feedback from senior developers to enhance React.js component reusability and clean code habits.

• Connected the frontend rewards interface to external Express.js APIs, ensuring the accurate display of point balances for up to 200 concurrent users during peak hours.

• Configured initial CI/CD workflows utilizing GitHub Actions to automate JavaScript linting, streamlining UI deployments to AWS S3 and saving 4 hours of manual deployment work weekly.