I build reliable, high-throughput payment and communication systems for fintech platforms.
My work lives at the intersection of scalability, concurrency, and financial precision — where milliseconds and consistency matter.
A system-driven engineer who thinks in flows, not functions.
I specialize in designing backend architectures that handle millions of financial and communication transactions with speed, integrity, and observability.
I bridge engineering and finance, converting product vision into resilient tech infrastructure.
| Domain | Stack / Tools |
|---|---|
| Core Languages | Go (Golang), Java (Spring Boot), TypeScript, JavaScript |
| Frontend | React, Next.js, Tailwind CSS |
| Data Layer | PostgreSQL, MySQL, Redis, Mongo, GORM, Hibernate |
| Infra & CI/CD | Docker, Nginx, GitHub Actions, Supabase, AWS |
| Event & Queue Systems | Kafka, Webhooks, Outbox Pattern |
| System Patterns | Circuit Breaker, Rate Limiter, Retry, Saga, CQRS |
- Core Fintech Platform: Engineered payin/payout services integrating UPI, cards, wallets, and netbanking with transactional guarantees and fail-safe routing.
- Event-Driven Outbox Hub: Designed and implemented a Go-based asynchronous event hub that improved reliability across multiple payment channels.
- CPaaS Platform (Chitchaat): Built infrastructure powering SMS, WhatsApp, RCS, and voice/video messaging for enterprise communication.
- Performance-Focused APIs: Refactored legacy Java services and Go microservices to reduce latency and scale under heavy load.
I led the development of a high-throughput payout orchestration system — reducing transaction bottlenecks and downtime by more than 60%, while enabling seamless multi-bank integration.
This system became a core backbone for large-scale disbursements and vendor payments, handling thousands of concurrent transfers per second.
That’s not just code — it’s infrastructure that moves money.
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“I engineer systems that don’t just work — they sustain, scale, and move real value.”
— Dharanitharan