• Built secure authentication and authorization systems using AWS Cognito.• Developed and designed APIs for user profiles, user posts, posts-collections and user follow-followers in the NestJS framework.• Developed an interactive Social Media Feed in React, to engage users with posts. • Developed Firebase FCM APIs for sending notifications to users, groups, and topics, enhancing real-time communication capabilities.• Developed asset-pipeline tool for fashion designers team to upload assets to Amazon S3 in NestJS and ReactJS.• Managed AWS infrastructure tasks, including setting up CloudWatch alarms, utilizing AWS Lambda for Slack alerts, and configuring AWS SES for email notifications

• Developed library to integrate crons from all fintech services to our internal fintech-cron-management service.• Worked on face detection script for KYC for loan applications, increased successrate from 30% to 80% for face detection which eventually increased revenue.• Responsible for performance improvements, adding minor features and bug fixesfor multiple fintech services

• Developed micro-service for gamification of the app, used by 1.5M users/month, which increased user engagement by 32%• Delivered app streaks feature single-handedly, where app launch/day increased the streaks & awarded users app credits, increased app open rate by 16%• Debugged & fixed multiple severity 1-3 bugs, involving wallet awards not expiring, refunds not getting processed, etc

• Automated the process of e-billing, saving countless hours for users, which further enhanced the product and experience• Created JSON config files on POSTMAN to scrap bill data like amount and due date which was further provided to business team.