Jan 2021 – Jan 2023 · 2 yrs

• Lead the backend team for the Vibe application and designed the whole backend architecture. Implemented critical features like cloud messaging for users, watch together feature and content scheduler. Saw a user growth curve from 0 to 1+ million total users.
• Developed and minted smart-contract wallets and NFTs for more than 1M active users on the Rush application. Implemented auto key rotation for smart contracts.
• Completed a bunch of POCs on blockchain like launching tokens, trying out different proxy patterns and implementing different kinds of smart contract custodial wallets.
• Currently building a crypto-native ludo application.

May 2017 – Jan 2021 · 3 yrs 8 mos

• Part of the core team responsible for providing a reliable infrastructure having 4 9’s availability and under 5 ms latency while delivering a billion messages per day.
• Moved messaging from phone number as a primary user identifier to a system-generated UID for all users with zero downtime. This was a prerequisite for user privacy and various other features like cloud messaging and change-number feature.
• Developed backend cloud messaging infrastructure and migrated messaging from device-based messaging with 100% backward compatibility and WebClient support. Delivered it with zero downtime while only adding 1-2 milliseconds to the message delivery flow.
• Did multiple DB migrations like moving users-relation DB from MySQL to HBase and worked on multiple user privacy features related to last seen and friends and developed their microservices.

Jun 2014 – Apr 2017 · 2 yrs 10 mos

• Responsible for the development and maintenance of the Hike backend API infrastructure.
• Implemented multi-chunk file transfer which reduced the error rate for file transfer by more than 60%.
• Worked on solving users’ connectivity and latency issues. It involved reading their TCP traces and optimising multiple TCP settings.
• Worked on securing Hike signup by implementing expirable JWT tokens, refresh tokens and SSL pinning.