How we created an internal sales app in 1 hour on top of Google Sheets & HubSpot

We had a lead qualification microprocess in engaging new UI Bakery users to participate in our low-code platform demos. To avoid switching between CRMs, analytics systems, Google Sheets tables when qualifying a new user and inviting them for an interview, we needed to reduce the number of tabs and tools we used, and minimize the amount of actions.
Our main requirement was to do it fast and with reasonable effort since we couldn’t afford to spend weeks or even days on this project. However, keeping these microprocesses unautomated was not acceptable: their costs formed a large part of our operational expenses.
We decided to build an internal tool integrated with third-party services we used for user engagement: Google Sheets, HubSpot, Fibery.
We allocated 1 tech lead for this project. The whole process was conducted in the next steps:
Due to the experience our tech lead had with UI Bakery, it took him 1 hour to develop an internal tool for lead qualification in UI Bakery.
Thanks to the use of UI Bakery, we escaped the complexity of manual internal tool development, and got the following results: