Software Engineer, Paytm
at, Paytm
January, 2025-Present
- Build and maintain distributed backend services for Paytm Soundbox IoT payment devices, supporting real-time transaction processing across millions of merchants and 12+ device variants in India and Indonesia.
- Design real-time, pub/sub-based data pipelines (MQTT) for RTOS-based devices, delivering sub-second event delivery at scale across a distributed device fleet handling millions of daily transactions.
- Architected a low-latency audio streaming pipeline for AI Soundbox using phase-wise chunking, Base64-encoded PCM buffering, and a 10K-entry prefetch buffer, reducing decoding overhead versus the prior AMR/MP3 approach.
- Designed a Root CA certificate validation and rotation system for secure device authentication across the fleet, working closely with security and infra teams.
- Designed and built an end-to-end agentic AI development pipeline — architect, developer, reviewer, and validator agents coordinating autonomously from a single Jira ticket through code, review, and deployment — cutting feature planning-to-deployment time from 2 weeks to 4 days.
