I was fully in charge of the SQL backend database, meaning I had to learn how to write SQL queries. I optimised this by storing the data that we collected day to day in Excel and then writing a VBA script to automate creating the SQL queries to update the database quickly.
This lead to a complete rebuild when our company migrated from Microsoft to Google, meaning I had to migrate the data and automations into Google Sheets and use Google Apps Script.
There was a brief period where we began consider rebuilding the frontend in React and as such, I was involved in discussing the requirements and helping with the interview process, although the development of this stopped relatively quickly when the whole project was scaled back.
As well as the main app, we also developed several NeoDash dashboards off of the Neo4j data for ongoing maintenance to check on the data, teaching me about this tool and getting me further involved with writing Cypher queries.