NPS Survey System Architecture: Spearheaded the design and implementation of an NPS survey system, orchestrating the distribution of surveys to 25k users weekly and capturing their responses. This system significantly aided the research marketing team in tracking repeat customer rates, identifying trends, and analyzing customer loyalty patterns across 13 countries, enhancing Nextdoor's product strategies.

Third-Party Signups: Integrated third-party signups with Facebook, Apple, and Google Single Sign-on.

Log Monitoring and Alerting System: Designed a log monitoring and alerting system, enabling services to post logs into AWS CloudWatch and Datadog, resulting in reduced incident reaction time from hours to seconds.

Active Learning Tool: Built an in-house data annotation tool to automate labeling of 10K records and train ML model using a small dataset by creating an Active Learning tool, saving 4-5 hours of analysts' time/week.

Computer Vision Platform: Designed and implemented a image recognition system using external API's like Brandwatch and Clarifai. This feature allowed uploading of images into the web app and displayed relevant annotations on the image along with their percentage scores given by the REST API.