Front-end and Back-end engineers

Due to scaleability issues and bad performance, we are going to be re-building the app, and are looking for
2 x front end engineer
1x back end engineer
or a full stack developers to work on the project over the next few months.

We are a marketplace app that connects students with jobs/tasks. Our app, UniTaskr is currently on the app stores and has 65,000 members.

The current stack is not scaleable. We need the back-end to be re-configured, and a new front-end developed.