Ledger On-Ramp & Off-Ramp
End-to-end fiat-to-crypto integration for Ledger, covering API contracts, service integration, widget delivery, and production monitoring. $55M+ processed across 300K+ orders.
About
Backend engineer with 7+ years building distributed systems across logistics, fintech, and Web3. I progressed from shipping end-to-end products as a freelancer, to leading engineering at Logicarts, to owning revenue-critical platform infrastructure at Transak.
I design backend systems, write technical design documents, lead framework migrations, and operate high-scale production services across 150+ countries, with a focus on reliability, atomicity under failure, and clean API contracts.
Fiat-to-crypto infrastructure serving millions of users and 300+ partners (MetaMask, Ledger, Trust Wallet) across 35+ payment methods and 150+ countries. Core services handle 3000+ API calls/min at p99 < 500ms.
First engineering hire after the CTO at a B2B logistics platform. Owned architecture and led a 5-person team across backend, frontend, and mobile.
Built and shipped production systems for early-stage founders across ecommerce, logistics, education, and agri supply chain. Delivered 7+ mobile apps, 8+ dashboards, and 15+ backend services in 10 months.
Early-stage EV charging startup. Built working prototypes of EV charging stations designed for the Indian market.
Systems and products shipped across Transak, Logicarts, and freelance. Filter by company.
End-to-end fiat-to-crypto integration for Ledger, covering API contracts, service integration, widget delivery, and production monitoring. $55M+ processed across 300K+ orders.
Unified API wrapper abstracting partner-specific config for MetaMask, Trust Wallet, and Ledger. $100M+ monthly volume, 2000+ req/min at peak.
Single storage layer for user wallets across all services, using Redis distributed locks to prevent concurrent edits on the same user record, improving UX for millions and lifting conversion.
Led Travel Rule compliance across 5 backend services, customer UI, and AML tooling. Authored the design doc across 3 iterations, integrated Notabene, and separated pre-order collection into independent streams.
Standardised identity relay across three services so partners can submit user identity via APIs, eliminating re-verification friction across the platform.
Rolled out centralised auth across 6 services, standardising token introspection and removing per-service auth logic.
Migrated 100+ APIs across 4 feature-flagged releases. Test coverage from under 10% to 87% with zero downtime and zero rollback.
Introduced retry-with-backoff and idempotency on webhook delivery for KYC, transaction, and payment events across 300+ partner integrations, eliminating duplicate processing on provider failures.
Integrated AML wallet screening on refund and on-ramp flows before wallet-address creation, eliminating roughly 1000 manual Ops reviews per month.
Scaled internal operations with n8n-based AI agents integrating Intercom, HubSpot, Slack, and Telegram, reducing repetitive overhead across 1000+ partner groups.
Drove account management and Gross Profit analytics for the sales team on Retool: partner performance, GP pivots by region and payment method, and real-time incentive calculations across 50+ dashboards.
Operationalised a partner payout system and sales incentive calculation engine handling partner-specific payout processing and real-time incentive computation for revenue and sales teams.
Designed the overall platform: 3 backend services, 3 mobile apps, and 2 operational dashboards, scaling from a single city to 35+ cities across South India.
Barcode-based shipment tracking that closed a Rs. 2 Cr+ enterprise deal. Order grouping, route optimisation, POD generation, and live mobile scanning for part-load and full-load consignments.
Client-facing platform for order placement, real-time tracking, and shipping label access, with captain assignment, vehicle loading, and tracking-number generation.
Internal dashboards covering order management, vehicle and vendor tracking, route planning, trip management, and daily logistics workflows with analytics and reports.
Integrated GPS devices and Wheelseye for live tracking across 200+ vehicles, with background cron jobs pushing live location pings to partner APIs for Amazon, Flipkart, and Delhivery.
Broadcast vehicle requirements instantly to all vendor mobile apps; vendors submitted quotes and the ops team finalised bids and closed requirements from a central dashboard.
Multi-level RBAC across employee, manager, and finance roles, covering ticket creation, approval workflows, payment tracking, and money-transfer controls to reduce fraud and manual intervention.
Deployed a dedicated Windows Server to generate PRN files for Bluetooth thermal printers used for on-ground label printing, since Linux servers could not handle PRN natively.
Multi-role ecommerce platform with mobile apps covering the full order lifecycle: pricing engine, coupon management, fulfillment, inventory, settlements, and delivery operations, with MongoDB aggregation reporting and cron-based delivery scheduling.
Full-stack agri platform with 3 mobile apps (Grower, Agent, Vendor) and 2 web dashboards covering role-based procurement, inventory, pricing, logistics, and real-time order tracking.
LMS with course management, progress tracking, and a split-screen, browser-based virtual machine playground letting learners practise directly within the platform.
CSV upload with automated validation workflows, reducing certificate issuance from hours to minutes for large-scale batches.
Award-winning builds across ETHGlobal, ETHIndia, Scaling Ethereum, Chainlink, Superteam, and more, spanning DeFi, wallets, payments, cross-chain, and developer tooling.
🥇 Aave 1st · 🥇 Arcana 1st · 🥈 The Graph 2nd
DeFi investment platform that simplifies Aave for everyday users: wallet onboarding, fiat on-ramp, lending, borrowing, repayments, and portfolio management in one experience.
🥇 1inch 1st Prize
Token plugin that automates stock issuance and dividend distribution using smart contracts and 1inch infrastructure.
🏆 Coinbase Onramp · 🏆 1inch · 🏆 WalletConnect Creative
Secure multi-chain asset management dashboard combining Safe Wallet, Coinbase Onramp, and 1inch swaps into one unified platform.
🥇 Superteam 1st · 🥈 SUI 2nd
Telegram community engagement platform that rewards active users with NFTs on the SUI blockchain.
🥇 Powerloom 1st Prize
Analytics platform for monitoring blockchain snapshotter nodes and protocol performance.
🥈 Biconomy 2nd Prize
Gasless arbitrage platform that executes trades across multiple DEXs while abstracting blockchain complexity from end users.
🥉 Tooling 3rd Place
MetaMask Snap enabling native support for the DAG blockchain directly inside MetaMask.
iNeuron.ai
🥈 2nd Prize
Decentralized crowdfunding platform enabling creators to receive transparent Ethereum donations without intermediaries.
🏆 Polygon Pool Winner ($1000)
Blockchain-powered digital certificate issuance and verification platform with immutable audit trails.