About
I am a backend engineer focused on building distributed systems at the intersection of blockchain, payments, and financial infrastructure.
My work centers around Go-based backend development, smart contracts, and protocol-level integrations, with a strong interest in machine payments and emerging HTTP-based payment flows.
I design APIs, build microservices, integrate on-chain and off-chain components, and deliver reliable backend infrastructure for real-world financial use cases. Recent projects include xpaywall / xgateway (a self-hosted HTTP 402 paywall and machine payments gateway), mppx-go (machine payments SDK), Blockrush (EVM performance testing), Vectrain (vector pipeline in Go), and permissionless DeFi protocol interfaces.
For full experience and details, see resume.
// highlights
- 12+ years in backend development
- 3+ years in Go and blockchain systems
- Experience across fintech, ecommerce, DeFi, and infrastructure
- Built systems for payments, ledger flows, blockchain monitoring, and protocol integrations
// key areas of focus
- Backend and distributed systems engineering
- Blockchain infrastructure and smart contract integrations
- Fintech and payment systems
- Machine payments
// experience
Fintech spend management platform helping companies optimize SaaS and cloud expenses through virtual cards, automation, and financial infrastructure integrations.
- Led development of a US card inquiry and transaction processing subsystem handling real-time card events and payment data flows
- Built accounting integrations with QuickBooks and Xero for automated transaction sync, reconciliation, and reporting
- Implemented reliable integrations with external financial providers with focus on idempotency, retries, and observability
- Contributed to scalable backend architecture for high-volume payment and ledger operations
- Built a Go REST API microservice for an AI task agent that managed crypto-related user goals, progress verification, scoring, and ranking
- Engineered microservices in Go, ML, and TypeScript to transcribe, summarize, and visualize YouTube content into mind maps and lists
- Designed and implemented on-chain monitoring systems for Uniswap V2 and V3 pools
- Built a Uniswap V4 bot in Go to calculate live asset volumes required to move price ticks
- Delivered custom interfaces in Vite, React, and TypeScript for DeFi protocols
- Created an ElectronJS + WebSockets photogrammetry control app that reduced setup time by 70% and improved reliability
Fintech company serving over 1M users with AI- and blockchain-powered payment and finance tools.
- Optimized PostgreSQL queries and schema, reducing dashboard and report load times by 50%
- Set up custom Prometheus metrics and Grafana dashboards, improving contract-level observability and halving incident detection time
- Built a real-time monitoring dashboard integrating Blockscout and on-chain analytics
- Deployed blockchain infrastructure for development and testnets using L1/L2 systems, Geth, and Besu
- Developed and audited Solidity smart contracts
- Increased blockchain system test coverage using Hive
Ecommerce software provider specializing in custom Magento solutions for high-growth B2C and B2B brands.
- Architected a fast Magento 2 checkout system integrated with Adyen and Ventrata via Kafka, reducing order processing time by 4x
- Built an auto-deployment module for store setup, reducing time-to-launch by around 70%
- Optimized backend architecture across code, database, and cache, reducing page load times by 75%
- Developed crypto payment modules for ETH and ERC-20 payments
- Designed custom sales indexers for fresher analytics and reporting
- Contributed to Hyva Checkout and backend architecture improvements
- Integrated IBM Watson with Magento 2 for smarter search and product customization
- Connected Microsoft Navision and Salesforce with Magento 1
- Led Magento 1 to Magento 2 migration work
- Configured Varnish caching and resolved performance bottlenecks
- Supported solution architecture for scalable multi-store deployments