Mohammad Jagora

Messaging Service for Push Notifications

• Designed and implemented a messaging service to send push notifications to Android and iOS devices utilizing serverless Lambda architecture to handle spikes in traffic.

• Replaced the third-party service Braze & Twilio by developing an in-house solution, reducing operational costs.

• Worked with the mobile team to onboard consumers to the push notifications system.

DEFCON Alert State Service

• Designed and implemented DEFCON, an alert state mechanism activated during critical platform failures (e.g., order placed but not visible to riders/restaurants).

• Integrated DEFCON into key parts of the order journey, ensuring user flow could be halted during severe incidents (Sev0).

• Utilized Kafka for real-time updates across services and S3 for configuration state storage.

• Developed an intuitive UI enabling employees to activate DEFCON efficiently during high-severity incidents, providing swift response capabilities during high pressure scenarios