CMMS software, Cloud based web app and Mobil app, SAAS model, Javascript backend.

I am looking for a developer to create a comprehensive CMMS software, cloud based web app and mobile app with a SAAS model and JavaScript backend. This project needs to be completed in no more than three months. The features I require for the CMMS include work order management, asset management and preventive maintenance scheduling. In addition to these features, I will need integrations for an inventory management system. The successful developer will be expected to design the software to enable me to optimise my workflow processes. All tasks must be completed with a high standard of excellence.