As lead full stack engineer, my contributions to this company were to:

1. Setup software delivery process - Dockerize backend stack, use CI/CD for quick iteration and delivery, ensure correct processes were setup for data backup and recovery.

2. Design and build REST APIs for the different services using NestJS, TypeORM and PostgreSQL.

3. Designed the backend APIs and database schema for a dynamic questionnaire system allowing sales teams to create different surveys that allowed users to provide answers by text, video and audio.

4. Developed the front end web, mobile first web application that allowed users to record and upload video and audio answers to surveys. This used native video and audio capabilities of the mobile device.