Building scalable, high-performance, and reliable backend systems and APIs

• Optimized GraphQL server with caching and batching, reducing DB load by 70%
• Improved SQL performance, cutting workflow query time by up to 90%
• Enhanced frontend accessibility with WCAG-compliant keyboard navigation
• Defined and enforced database best practice standards
• Set up Sentry-based error monitoring and team-specific issue routing
• Audited and cleaned PostgreSQL database, removing hundreds of MBs of unused data
• Tech stack: Node.js, KnexJS, PostgreSQL, ExpressJS, GraphQL, AWS, Sentry, ReactJS