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Freelance Web3 engineer, open to contract work
Smart contracts, dApps, stablecoin payments and the backend under them. Built, tested and run in production.
Open
Freelance and contract Web3 work, taken on a few at a time.
Remote
Bengaluru, India, UTC+5:30. Has shipped for a San Francisco team.
Founding engineer
Stablecoin neobank payment rails at Swad, end to end.
What I take on
- Solidity smart contracts on EVM chains, tested in Foundry to full coverage.
- Solana programs in Anchor (Rust), Stellar contracts in Soroban.
- dApps: Next.js, wagmi and viem front ends wired to contracts and indexers.
- Stablecoin payments: USDC rails, webhooks, reconciliation and fee accounting.
- Zero-knowledge circuits in Circom, private KYC and encrypted tokens.
- AI agent payments: on-chain spend limits, x402 and ERC-8004.
Chains and languages
EthereumBaseAvalancheSolanaStellarFlareStarknet0GSolidityRustCircomTypeScriptGo
Questions
- Is Agnij Dutta available for freelance Web3 work?
- Yes. Agnij Dutta takes a small number of freelance and contract Web3 engagements through Rump Labs, a studio Agnij co-founded. The call is with Agnij, and so is the work.
- What Web3 work does Agnij Dutta do?
- Smart contracts in Solidity, Anchor and Soroban, dApp front ends, stablecoin payment infrastructure, zero-knowledge circuits and spend controls for AI agents with wallets.
- What has Agnij Dutta shipped?
- Payment rails at Swad, a San Francisco stablecoin neobank, as a founding engineer. FLIP, funded by a Flare Foundation grant. Avacado, a bounty winner at ETHGlobal New Delhi. Capline, published on npm and deployed on three networks.
- Where is Agnij Dutta based, and is the work remote?
- Bengaluru, India (UTC+5:30), originally from Kolkata. Engagements are remote, with teams in India and abroad.
- How do I hire Agnij Dutta?
- Email agnijdutta413@gmail.com or book a 30-minute call at agnij.me. Engagements are scoped in writing before anything starts.