Led the design and launch of an in-app Notification Center for event organizers (React, Braze Web SDK), creating a new targeted communication channel that generated 217K impressions and up to 14.5% CTR on payout-critical messages.
Architected real-time, event-driven marketing infrastructure (API Gateway, Lambda, SQS, SNS, Kafka) powering automated, personalized communications and transactional email, scaling critical notifications from ~70/month to ~300/day.
Modernized push notification architecture prior to the events season (AWS Lambda, SQS, serverless workflows), delivering 2.5M sends and 108K app opens (4.2% open rate).
Identified and fixed a critical unsubscription flaw that unintentionally opted users out of all notifications; drastically reducing bounce rates of ~11M emails per quarter and improving customer engagement.
Reduced message query latency by 90% by restructuring the database, optimizing MySQL indexing via Django ORM, and managing Nomad migration jobs to backfill historical data.
Made architecture and implementation decisions with cost, scalability, availability, and security in mind, including adherence to GDPR and company-wide security practices.
Built pipelines (Airflow, Snowflake, AWS Glue, MySQL) to centralize user communication preferences, protecting legacy systems and expanding campaign reach by 25–50%.