Full stack developer needed - expertise in MongoDB and Lambda required

Full stack engineer required to help maintain and add features to existing marketplace business. Experience with MongoDB and Lambda is required. You need to be comfortable working with and existing messy codebase and figuring things out on the fly in a fast paced environment. Would do a few small hourly test projects to start then look to move to monthly salary with equity options. Please mention the word unicorn in your message or we will assume you didn't read this description.

Current stack:
- No SQL DB (Mongo, DynamoDB)
- PostgreSQL
- Express JS
- React JS
- Node JS

AWS Services
- DynamoDB
- ElasticBeanstalk
- Lambda
- EC2