Implemented the backend for a new service called "Courier Testflight," that allows potential customers to experience our notification system before signing up.

Built a new stack in Typescript/React, deployed on AWS.

Optimized access patterns in DynamoDB, designed secure REST API endpoints, and created a user-friendly UI.

Designed and implemented a relational PostgreSQL database to efficiently store this data tagging information: latitude/longitude coordinates of buildings, user information, questions, and responses.