Satyam Singh

I’m a backend engineer with 5+ years of experience building scalable, high-performance fintech and distributed systems. I focus on microservices, event-driven architectures, and high-throughput reliability—especially where correctness and consistency matter.

At Priority IDC, I designed and implemented a Target Balance Account (TBA) system handling ~2K–5K transactions/sec during peak loads. I built Kafka & Debezium-driven pipelines processing ~1M+ events/day for real-time data synchronization, cutting API response time by ~30–40% with Redis caching and optimized DB queries.

Earlier at 17Live, I built recommendation backends for ~100K+ daily active users with real-time personalization. I processed ~500K–1M events/day using Kafka, reduced recommendation latency by ~35%, and supported performance with a load balancer microservice (~10K+ requests/min) while reducing infrastructure cost by ~20% through GPU utilization monitoring.

At Paytm, I developed a ledger service handling ~1M+ transactions/day with ACID compliance, improving query latency by ~40% via indexing and Redis caching. I’ve also shipped projects like a P2P digital wallet using Saga-based distributed transactions and a double-entry ledger, plus real-time fraud detection and secure authentication (OAuth2/JWT/API Gateway), ensuring fault tolerance with service discovery (Eureka) and circuit breaker patterns.