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Available Now

Blockchain Developer
Solidity Β· Rust Β· Web3

Senior blockchain developers for smart contracts, DeFi protocols, NFT platforms, and Web3 application development.

Get Started β†’ Book Free Call
πŸ”—
Blockchain Developer
βœ“ Smart Contracts
βœ“ Web3 Integration
βœ“ Security
βœ“ Multi-Chain
βœ“ DeFi Development
25+
Blockchain Projects
5+ yrs
Avg Experience
4.9β˜…
Rating
48hrs
Start Time
Solidity & Rust
Multi-chain
Why Nexcode

Why clients choose us to hire through

🎯
Security First

We run static analysis and fuzzing before you see any contract. No exceptions.

⚑
Start in 48hrs

Engineer matched in 24 hours. First deliverable in 48 hours.

πŸ”’
Audit-Ready

Every contract ships with a Slither/Mythril report and a clean bill of health.

πŸ”„
Free Swap

30-day replacement guarantee.

Client Reviews

What clients say about our engineers

"

Our Nexcode blockchain developer wrote our NFT marketplace smart contract, optimised gas costs by 40%, and passed our Certik audit with zero critical findings on first submission. That is exceptionally rare β€” most contracts have findings that require re-submission.

AV
Alex V.
CTO, NFT Platform
β˜…β˜…β˜…β˜…β˜…
Verified Review
β˜…β˜…β˜…β˜…β˜…

"DeFi yield protocol on Ethereum. The Foundry test suite found 3 exploitable edge cases before we submitted for audit. Saved us from a critical vulnerability. Professional-grade Solidity."

TF
Tyler F.
Protocol Lead, DeFi DAO
β˜…β˜…β˜…β˜…β˜…

"ERC-20 token with vesting contracts and multi-sig treasury. Clean, gas-optimised, and the NatSpec documentation is good enough to publish. Passed community audit first try."

KP
Kim P.
CEO, Web3 Startup
Engagement Models

Flexible hiring options

Part-time, full-time, or a dedicated team. Monthly billing, no lock-in.

⚑
Part-Time Blockchain Dev
From $65/hr

20 hrs/week. Smart contract work, DApp features.

βœ“ Solidity 0.8+
βœ“ Foundry or Hardhat
βœ“ Gas optimisation
βœ“ Audit preparation
βœ“ Sprint participation
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πŸ‘¨β€πŸ’»
Full-Time Dedicated
From $90/hr

40 hrs/week. Full Web3 product ownership.

βœ“ Protocol architecture
βœ“ Cross-chain deployment
βœ“ Frontend Web3 integration
βœ“ Audit coordination
βœ“ Daily standups
Hire Now β†’
πŸ‘₯
Web3 Pod
Custom

Full Web3 team for DeFi or NFT protocols.

βœ“ Lead + contract + frontend
βœ“ Full protocol ownership
βœ“ Security-first culture
βœ“ Mainnet deployment
βœ“ Timezone alignment
Hire Now β†’
What's Included

Everything in our blockchain developer service

πŸ“œ
Smart Contracts

Solidity & Rust development

βœ“ ERC-20, ERC-721, ERC-1155
βœ“ DeFi protocol contracts
βœ“ Upgradeable proxies
βœ“ Security patterns
🌐
Web3 Integration

wagmi, viem, ethers.js

βœ“ wagmi + viem frontend
βœ“ WalletConnect integration
βœ“ On-chain data fetching
βœ“ Event listener systems
πŸ”’
Security

Audit and vulnerability review

βœ“ Reentrancy prevention
βœ“ Access control review
βœ“ Slither static analysis
βœ“ Test coverage for exploits
β›“
Multi-Chain

EVM + Solana expertise

βœ“ Ethereum mainnet & L2s
βœ“ Polygon, Arbitrum, Base
βœ“ Solana (Rust programs)
βœ“ Cross-chain bridge logic
🏦
DeFi Development

AMM, lending, staking

βœ“ AMM contract implementation
βœ“ Lending protocol design
βœ“ Staking & rewards contracts
βœ“ Oracle integration (Chainlink)
πŸ“±
NFT Development

Minting and marketplace contracts

βœ“ ERC-721 & ERC-1155 minting
βœ“ Marketplace royalties (EIP-2981)
βœ“ IPFS metadata pinning
βœ“ Reveal mechanics
FAQ

Blockchain
questions

Common questions before you start.

Talk to Us β†’
Do blockchain developers also build the frontend?+
Yes β€” our blockchain developers work with wagmi + viem for the Web3 frontend integration layer, alongside React for the UI. They handle wallet connection, transaction signing, on-chain state reading, and event subscriptions.
Do you audit your own smart contracts?+
We do internal review (Slither static analysis, full manual review, test coverage for known attack vectors). For contracts holding significant value, we recommend and coordinate third-party audits from Consensys Diligence, Trail of Bits, or OpenZeppelin.
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Ready to get started with blockchain developer?

Free discovery call Β· 24hr proposal Β· Fixed-price quote.

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