Backend engineer crafting high-throughput, event-driven payment systems in Java & Spring Boot — where a dropped event isn't a bug, it's a financial discrepancy.
I'm Chakshu Jain — first engineer at a Dubai-based payments startup, where I designed the core money-movement stack from zero: repayment, reconciliation, and real-time transaction history.
I care about the boring guarantees — idempotency, fault isolation, an auditable ledger — the ones that let a business trust its own numbers. My focus is correctness at scale under real load: SQS-driven Saga orchestration, provable settlement, observability that answers questions before anyone asks them.
First engineer on the platform. Owned the money-movement stack end to end — schema and API design, Saga orchestration over SQS, and the observability that makes settlement provable. 1M+ transactions/month at 99.95% auto-debit uptime.
Built an Android SMS-parsing service to assess creditworthiness, cutting manual verification, and integrated CIBIL (TransUnion) for automated credit-score retrieval.
Backend services for EDUPOOL, a collaborative learning platform syncing notes and video across YouTube, Coursera & Udemy.
Four core services behind a live payments platform.
A scalable repayment engine processing multi-mode payments — NetBanking, cards, auto-debit — with recovery workflows tuned to cut failures and lift collection rates.
Automated day-end reconciliation for card transactions across banks and networks — streamlining settlement between issuers, acquirers and schemes.
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Independent builds — same instincts, my own repos.
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A multiplayer DSA-prep platform — curated roadmaps, streaks, real-time war-room chat and a browser extension that syncs LeetCode solves. Schema to deploy.
An autonomous deal-scraping and alerting agent for Indian quick-commerce — scrapers, scoring engine, orchestrator and scheduler as a Dockerized service.