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Full-stack Software Engineer with 3+ years of experience building Web Apps in Web3, DeFi, NFT, and marketplace products across React/Next.js, NestJS, Python, PostgreSQL, Solidity, and AWS. Experienced in production dashboards, smart contracts, data pipelines, risk monitoring agents, and multi-chain integrations. I’ve shipped end-to-end products—from DeFi market snapshot pipelines and on-chain risk monitoring to production dashboards and commerce/NFT marketplace flows—leveraging TypeScript, Python, SQL, and Ethereum-compatible tooling (Foundry/Viem/Wagmi) to deliver reliable, operationally robust systems.…Full-stack Software Engineer with 3+ years of experience building Web Apps in Web3, DeFi, NFT, and marketplace products across React/Next.js, NestJS, Python, PostgreSQL, Solidity, and AWS. Experienced in production dashboards, smart contracts, data pipelines, risk monitoring agents, and multi-chain integrations. I’ve shipped end-to-end products—from DeFi market snapshot pipelines and on-chain risk monitoring to production dashboards and commerce/NFT marketplace flows—leveraging TypeScript, Python, SQL, and Ethereum-compatible tooling (Foundry/Viem/Wagmi) to deliver reliable, operationally robust systems.

Brian Joseph Keyrupan

Full Stack Developer, Web Developer, Back-End Developer, +2

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Full-stack Software Engineer with 3+ years of experience building Web Apps in Web3, DeFi, NFT, and marketplace products across React/Next.js, NestJS, Python, PostgreSQL, Solidity, and AWS. Experienced in production dashboards, smart contracts, data pipelines, risk monitoring agents, and multi-chain integrations. I’ve shipped end-to-end products—from DeFi market snapshot pipelines and on-chain risk monitoring to production dashboards and commerce/NFT marketplace flows—leveraging TypeScript, Python, SQL, and Ethereum-compatible tooling (Foundry/Viem/Wagmi) to deliver reliable, operationally robust systems.…Full-stack Software Engineer with 3+ years of experience building Web Apps in Web3, DeFi, NFT, and marketplace products across React/Next.js, NestJS, Python, PostgreSQL, Solidity, and AWS. Experienced in production dashboards, smart contracts, data pipelines, risk monitoring agents, and multi-chain integrations. I’ve shipped end-to-end products—from DeFi market snapshot pipelines and on-chain risk monitoring to production dashboards and commerce/NFT marketplace flows—leveraging TypeScript, Python, SQL, and Ethereum-compatible tooling (Foundry/Viem/Wagmi) to deliver reliable, operationally robust systems.

Available to hire

Full-stack Software Engineer with 3+ years of experience building Web Apps in Web3, DeFi, NFT, and marketplace products across React/Next.js, NestJS, Python, PostgreSQL, Solidity, and AWS. Experienced in production dashboards, smart contracts, data pipelines, risk monitoring agents, and multi-chain integrations.

I’ve shipped end-to-end products—from DeFi market snapshot pipelines and on-chain risk monitoring to production dashboards and commerce/NFT marketplace flows—leveraging TypeScript, Python, SQL, and Ethereum-compatible tooling (Foundry/Viem/Wagmi) to deliver reliable, operationally robust systems.

Skills

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Work Experience

Software Engineer at Mon Co. (formerly LiquidX) / Mon Protocol Team

March 1, 2024 - Present

Yield monitoring and DeFi analytics platform: designed and implemented a Dagster pipeline for market snapshots and risk/metrics computation with PostgreSQL + Alembic migrations. Built integrations across multiple DeFi protocols (Morpho, Aave, Athena, Hyperliquid) via JSON-RPC/Web3 and GraphQL, modeling shared ingestion/config abstractions. Developed analytics in Python (pandas/numpy/quantstats) including rolling returns, volatility, Sharpe/Sortino, liquidity and utilization, plus Slack-based failure sensors. Shipped a React dashboard (TanStack Router + TanStack Query + Tailwind + shadcn/Radix) with wallet connectivity (wagmi/viem/Reown AppKit). Maintained NestJS REST APIs for vault/markets/users/auth/admin/audit/reallocation flows with Swagger documentation; also deployed Hypernative risk agents for APY/oracle checks and Morpho-related on-chain reads.

Software Engineer Intern at F-Secure Malaysia

August 1, 2022 - November 1, 2022

Migrated R&D backend projects to Docker and developed automated testing frameworks using Python and Robot Framework.