Web application: Mail archive with Elasticsearch

We need a mail archive which fulfills the following requirements: • Users can login and logout the the system (SSL protected, firebase authentication) • Different scopes/roles for readers and admin • readers can enter search terms and will get a result list • by clicking on an item of the result list, the user can see the full email • The admin can upload (drag-and-drop and form-based) zip files with emails • uploaded emails will be stored in firebase which will act as the primary file storage for the application • the application will also asynchronously send the data to elasticsearch which will be used as as the search engine • the admin has a button that flushes the entire database an reindex all data stored in firebase • the admin has a button to download a dump of the entire content of firebase Technology stack: The backend is suppose to be written in go (golang). The frontend should be a one page application written either in react or lit-html (webcomponents). You will be provided with access to out gitlab. All code has to be delivered to this repository. The frontend will only communicate with the backend. There will be no direct access to the firebase storage or to elasticsearch from the frontend. Target environment: The application is suppose to be deployed in kubernetes (not scope of this project). That means that you create a Dockerfile to package the application as a docker image. Colaboration: We will communicate via Slack and Google Hangouts Meet. We expect from you that we can talk to you via video conference. Our Terms: Since this is relatively small project we will only pay for a 100% delivery. We have no use for partial delivery. On the other side we are willing to deposit the full amount as a milestone payment which will be released as soon as you deliver.