Building the backend systems that move money — loan origination engines, payment orchestration layers, and KYC pipelines processing 10,000+ transactions/day in production for NBFC lending platforms.
| Area | Result |
|---|---|
| Loan application throughput | 10,000+ applications/day, sole backend engineer |
| Payment gateway reliability | 99% success rate across 15+ integrations (Razorpay, PhonePe, Enkash, AU Bank) |
| Manual operations | Reduced 55–80% via automated workflow pipelines |
| Database performance | Query latency cut up to 70% via indexing + Redis caching |
| Production uptime | 99%+ on AWS (EC2, RDS, Lambda, SQS) |
Languages
Backend & Frameworks
Data Layer
Infrastructure & DevOps
APIs & Architecture
End-to-end loan origination backend modeled on production NBFC systems — KYC verification, multi-level approval (RO → BM → BCM), EMI/repayment/foreclosure calculators, and automated document generation.
NestJS PostgreSQL Redis Docker RBAC Swagger
Unified orchestration layer for multi-provider payment processing — retry logic, idempotency keys, webhook reconciliation, and signature verification across gateway integrations.
Node.js TypeScript Webhooks Idempotency Jest
Architecture decision records and diagrams from real production problems — database indexing strategy, caching layers, queue-based async processing, and scaling a monolith toward services.
System Design ADRs Mermaid Diagrams
Architecting a high-throughput NBFC lending platform as the sole backend engineer at Plugseal Innovation Service, while open-sourcing reusable patterns from that work above.
📫 vinay3000111@gmail.com · 📍 Bangalore, India