Abhit Kumar Das

I’m a Senior Backend Engineer with 7+ years of experience designing and scaling distributed systems handling millions of transactions. I’m driven by building high-throughput microservices and event-driven architectures that stay fault tolerant under real-world load, while continuously improving performance and reducing infrastructure costs.

At Axi - Crypto Trading Exchange, I built a high-throughput asset management service from scratch—processing fiat deposits, crypto transfers, and real-time balance tracking across thousands of accounts. I designed a double-entry ledger system for strong consistency, accurate balance computation, and full auditability, and I implemented Kafka-based event streaming to power downstream risk and compliance. I also integrated Fireblocks for secure crypto custody and developed a sub-account trading system supporting isolated account hierarchies for institutional and algorithmic workflows.

Previously at Novatr, I directed end-to-end payment systems across Stripe, Razorpay, Klarna, and PayPal, and onboarded international gateways to increase user retention by 20%. I created a multi-currency order management system for automated checkout and payment reconciliation, led a monolith-to-microservices migration that reduced server infrastructure costs by 20% and improved deployment speed by 60%, and overhauled CI/CD to reduce Docker image sizes by 55% and CI build times by 40%. Earlier roles reinforced my end-to-end mindset—from leading a team to deliver an e-commerce platform and streamlining ETL (90% processing time reduction and 40% cost reduction) to improving geo-search relevance by 80%, cutting latency with Redis caching, reducing incident noise and MTTR by 40%, and building secure KYC handling with encrypted storage plus OCR/face recognition that eliminated 70% of manual review effort.