I developed a referral system that enabled the marketing team to give specific users promo codes to hand out. It then tracked the progress of their referrals and gave a cash reward to both the referrer and referee once the referee was sufficiently engaged in the platform. The feature was completely stable from launch. I also drafted a flowchart of the REST API usage to help the frontend engineers in their implementation, saving them valuable time.
I implemented the automatic payment splitting backend, automating the case of when a company pays a talent agency, which then uses that payment to pay its talent, streamlining the user experience.
I unified two separate web app backends with separate user models to simplify future design and development. This involved the analysis and redesign of large swathes of the database, REST APIs, and business logic. This kind of project is very risky, but it turned out successful, and I completed my parts with zero bugs.
I took it upon myself to further free up engineering time by writing a program that uses the Asana API to compare the rate of task creation against task completion within a milestone to predict a final completion date for the milestone. I tried various prediction methods using all the points along a milestone's development as test data before settling on the most accurate method. This program eliminates the need for engineers to spend time making estimates.