krishna.

built real-time messaging from scratch: multi-device sync, socket-based updates, optimistic UI, offline-first sync. chat stays consistent across devices and survives flaky networks, which took a long time hunting race conditions and lifecycle crashes that only show up once enough people are using it.

shipped in-app voice calls end to end with agora: call recording, network-state handling, and busy-call logic, all running on a purpose-built calling service so calls connect reliably even on patchy connections.

cut crash rates by tackling null-safety holes, async crashes, and memory leaks. wired up sentry and crashlytics with structured logging, so issues surface with enough context to fix them before users report them.

shipped OTA patches via shorebird to push critical fixes to users in hours instead of waiting days on store review.

integrated mixpanel and revenuecat for user analytics and iOS subscription management.

refactored the architecture to separate UI from business logic, cleaned up state management, and made the codebase something a new dev can actually navigate.

owned the entire notification pipeline across foreground, background, and terminated states - deep links, unread badges, and navigation all wired to behave reliably.

worked closely with product, design, and customer success teams to prioritize features and debug user-reported issues.

own releases end to end and ship on both app stores.