At Coco Health, I built the AI health-coach iOS app from its first commit to the App Store as the sole mobile engineer. I created live voice and chat experiences with an LLM health coach, and developed inbound AI phone calls using PushKit and CallKit.
At Flip, I co-built contextual journey tracking that powered personalization and increased engagement time 3×. Earlier, I led mobile work on apps including Odrabiamy.pl and Nutridome, where the app reached 200,000 downloads and shifted 50% of traffic from web to mobile. I also contributed to NestJS and GraphQL APIs and built consumer web experiences.

