Sphere
Acquired by Twitter in 2021
Group chat app for micro-communities. Early-stage engineer through $30M+ funding to Twitter acquisition.
- Architected & scaled iOS app through explosive growth to millions of users
- Migrated networking to Protobuf, cutting traffic by 35%
- Built E2E testing framework; achieved 99.99% crash-free rate
- Developed in-app ad platform with 2x higher CTR than industry standard
- GraphQL APIs, Pusher real-time sync, CI/CD automation