Bhargav Pandya

Software Development Engineer Ii @O4s

Gurugram, IN

Designed and owned user-service, exposing 50+ CRUD APIs for managing user data.• Co-led a team of 10 developers to modify the User schema, optimizing & refactoring 250+ APIs.• Added 10+ indexes across 6 collections of (>0.5Million records), cutting query latency by 75%.• Cut $lookup query time by using materialized views and Mongo change data capture.• Owned event-service & push-service for sending translated event-based push & in-appnotifications, leveraging Kafka to capture & queue system events per day.• Integrated Vietnamese payment vendor (Payoo) for direct bank transfers to 8,500+ users,driving a 70% increase in scan-related app engagement and customer fulfillment.• Built user referral feature on whitelabel-gateway service, boosting app engagement by 25%.• Developed 15+ APIs for Sales Partner App on inventory-service, enabling sales agents toperform product scan transactions on behalf of client beneficiaries.• Developed Scheme Creation feature and cut read query time by 60% using Redis caching.• Optimized custom registration flow for 25 Whitelabel Apps, reducing onboarding time by 100%.• Migrated 40+ APIs from a deprecated MongoDB instance, consolidating data storage.• Automated 8 scripts via Prefect flows, saving 3 hours/month for Operations Team.• Built 2 ETL flows for batch processing user onboarding CSV uploads and data downloads.• Integrated New Relic for microservice monitoring, reducing incident detection time by 90%.• Reviewed 150+ Pull Requests, improving code quality & helping peers with code refactoring.• Tech Stack: Node.js (TypeScript), Python (Flask), 30+ microservices, MongoDB, PostgreSQL,ClickHouse, Redis, Kafka, Docker, Kubernetes, AWS, Jenkins, Prefect, Elasticsearch, Firebase,Metabase, New Relic, Grafana, GitHub Actions, Swagger, JWT, Twilio, Vue.js, Koa, Express.js.

Pandit Deendayal Energy University

Bachelor of Science - BS, Physics