\n\n
Available Now

Blockchain Development
Smart Contracts. DApps. Web3.

Ethereum, Solana, and EVM smart contract development β€” DeFi protocols, NFT platforms, and enterprise blockchain applications.

Get Started β†’ Book Free Call
πŸ”—
Blockchain Development
βœ“ Smart Contracts
βœ“ DeFi Protocols
βœ“ NFT Platforms
βœ“ Security Audits
βœ“ Web3 Frontends
What's Included

Everything in our blockchain development service

πŸ“œ
Smart Contracts

Solidity & Rust contract development

βœ“ ERC-20, ERC-721, ERC-1155
βœ“ Custom contract logic
βœ“ Upgradeable proxies (UUPS)
βœ“ Multisig governance
🏦
DeFi Protocols

AMMs, lending, staking platforms

βœ“ AMM / DEX development
βœ“ Lending protocol design
βœ“ Yield farming contracts
βœ“ Liquidity pool management
πŸ–Ό
NFT Platforms

Minting, marketplace, royalties

βœ“ NFT minting contracts
βœ“ Marketplace smart contracts
βœ“ Royalty enforcement (EIP-2981)
βœ“ IPFS metadata storage
πŸ”’
Security Audits

Smart contract security review

βœ“ Reentrancy vulnerability check
βœ“ Access control review
βœ“ Integer overflow analysis
βœ“ Formal verification (Certora)
🌐
Web3 Frontends

dApp interfaces with wallet connect

βœ“ wagmi + viem integration
βœ“ WalletConnect / RainbowKit
βœ“ Real-time on-chain data
βœ“ ENS integration
β›“
Enterprise Blockchain

Private / permissioned chains

βœ“ Hyperledger Fabric
βœ“ Private Ethereum (Quorum)
βœ“ Chainlink oracle integration
βœ“ Cross-chain bridges
FAQ

Blockchain
questions

Common questions before you start.

Talk to Us β†’
Do you audit smart contracts before deployment?+
Yes β€” security audit is mandatory for all DeFi and any contract holding significant value. We run static analysis (Slither, Mythril), manual review, and recommend third-party audits from firms like OpenZeppelin or Consensys Diligence for high-value contracts.
Which chains do you work on?+
Ethereum mainnet, Polygon, Arbitrum, Optimism, Base, BNB Chain, and Solana. We select the chain based on your use case β€” gas costs, ecosystem fit, and user base.
Related Services

Often paired with blockchain development

πŸ€–
AI Integration
Learn more β†’
🌐
web development
Learn more β†’
☁
cloud & DevOps
Learn more β†’
πŸ”
QA & Security
Learn more β†’

Ready to get started with blockchain development?

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

Start Your Project β†’
30+
Web3 Projects
4.9β˜…
Rating
Multi-Chain
ETH Β· Polygon Β· Solana
48hrs
Start Time
Audited
All contracts
Our Process

How we deliver

A clear, milestone-based process with no surprises.

01
Blockchain Strategy
Week 1

Define the right chain, token economics, contract scope, and regulatory considerations.

02
Contract Architecture
Week 1–2

Design inheritance structure, access control, and upgrade strategy (proxy pattern if required).

03
Contract Development
Week 2–5

Solidity or Rust with full event emission, access control, emergency pause, and test coverage.

04
Security Audit Prep
Week 5

Internal audit: Slither + Mythril static analysis. All findings resolved before external audit.

05
Frontend & Wallet
Week 4–7

Web3 frontend with MetaMask, WalletConnect, transaction signing, and blockchain state display.

06
Mainnet Deploy
Week 7–8

Testnet rehearsal, mainnet deployment, Etherscan verification, and monitoring via The Graph.

Technology

The stack we trust

TOOLS
Contracts
Solidity 0.8+
Rust (Solana)
OpenZeppelin
Foundry / Hardhat
TOOLS
Chains
Ethereum
Polygon / zkEVM
Solana
Arbitrum / BNB
TOOLS
Web3 Frontend
ethers.js / viem
wagmi
RainbowKit
The Graph
TOOLS
Security
Slither static analysis
Mythril
Foundry fuzzing
Certik / Hacken audit
Why Nexcode

Why clients choose us

πŸ”’
Security First

Slither + fuzzing before you see any contract. We fix issues, not discover them post-launch.

β›½
Gas Optimised

We profile gas at every stage. Unnecessary computation stays out of your contract.

⬆
Upgradeable

UUPS and Transparent proxy patterns when your contract needs to evolve without data migration.

🌐
Multi-Chain

Ethereum, Polygon, Solana, Arbitrum, BNB β€” deploy once, extend everywhere.

Client Reviews

What clients say about our work

"

Nexcode built our NFT marketplace and staking contract on Polygon. Gas-optimised, fully tested, and passed our Certik audit with zero critical findings on first submission. That is rare in this space.

MV
Michael Vasquez
CTO, PixelVault NFT
β˜…β˜…β˜…β˜…β˜…
Verified Review
β˜…β˜…β˜…β˜…β˜…

"DeFi yield protocol with complex rebase mechanics. Foundry suite caught 3 exploitable edge cases before audit. Professional-grade Solidity engineering."

AT
Alex T.
Protocol Lead, YieldDAO
β˜…β˜…β˜…β˜…β˜…

"ERC-20 token with vesting and multi-sig treasury on Ethereum. Clean, gas-optimised, and the NatSpec docs are good enough to publish. Passed community audit first try."

KP
Kim P.
CEO, Web3 Startup