Smart Contract Development Marketplace
Hire Verified Smart Contract Developers
The marketplace connecting you with verified smart contract developers for Solidity, Rust and EVM contracts on Ethereum, Solana and more. Get secure, audit-ready code for tokens, DeFi, NFTs and dApps — with escrow and buyer protection on every order.
Smart Contract Development Services Available
Solidity Smart Contracts
Custom Solidity contracts for Ethereum and EVM chains: tokens, vesting, staking, escrow and bespoke business logic.
Rust & Solana Programs
Solana programs in Rust using Anchor, with account models, signer checks and well-structured program logic.
Token Contracts
ERC-20, ERC-721, ERC-1155, BEP-20 and SPL token contracts with mint, burn, fee and ownership controls.
DeFi & Protocol Contracts
Lending, staking, AMM and yield contracts as standalone modules or part of a larger protocol.
NFT & Minting Contracts
Collection contracts, minting logic, royalties and reveal mechanics for NFT projects.
Upgrades, Testing & Fixes
Proxy upgrade patterns, unit and integration tests, gas optimisation and bug fixes for existing contracts.
Types of Smart Contract You Can Buy
Why Buyers Choose Zinn Hub for Smart Contract Development
Smart contracts are the backbone of tokens, DeFi, NFTs and dApps — and because they are hard to change once deployed, the quality of the code really matters. On Zinn Hub you can hire verified developers for Solidity on Ethereum and EVM chains, or Rust on Solana, for everything from a single token contract to a full protocol.
Good contract work is written to be reviewed. After development, it is wise to commission an independent smart contract audit, and if you are building a full application you can pair contracts with dApp development for the front-end. Post a brief and verified developers come to you with proposals.
Best Selling Smart Contract Development Services
Browse smart contract development services from verified developers on Zinn Hub. Compare scope, chains, portfolios and verified reviews, then order securely with your payment held in escrow until the work is delivered and approved.
Top Zinns ⚡
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I will build scalable full-stack and Web3 dApps with secure smart contracts Verified Zinner Level 1I build scalable full-stack applications and secure blockchain solutions, from high-performance Web2 platforms to production-ready dApps and smart contracts on Ethereum and… - develop custom smart contract and dapp for staking, raffles, vesting, mutation Verified Trusted Zinner Hot Zinner Zinner Level 3This provides only a zoom call for consultation before we can move on to coding.
- I will build a custom full stack web application with React, Node.js, and cloud deployment Verified Zinner Level 1I am Omughelli Vovwero — a dedicated and highly skilled Software Developer who builds clean, scalable, and high-performance software solutions tailored to…
- I will develop a scalable full-stack dApp + Web3 strategy Verified Zinner Level 1Get a complete Web3 solution. I provide strategic business planning, robust full-stack dApp engineering, and investor-grade whitepapers to ensure your blockchain project…
- I Will Build Your Web3 Landing Page, NFT or DeFi Website Verified Zinner Level 1Creation of clean and functional websites through the use of frontend skills
- I build scalable Full-Stack platforms using Next.js and Node.js with seamless Web3 integrations. Verified Zinner Level 1Stop losing users to slow, buggy websites. I build high-performance Web2 and Web3 platforms that are secure, scalable, and ready for launch.…
- create ico presale website with presale smart contract integration Verified Trusted Zinner Hot Zinner Zinner Level 3Simple 1 section ICO message displaying website
- blockchain developer, integrate web3 staking presale dapp smart contract with ai Verified Trusted Zinner Hot Zinner Zinner Level 3I will make landing page and consult about your project | Blockchain Senior Developer
- be your blockchain developer and make staking web3 dapp smart contract on solana Verified Trusted Zinner Hot Zinner Zinner Level 3I will make custom smart contract and consult about your project
- be blockchain developer for web3 dapp, smart contract on solana evm monad Verified Trusted Zinner Hot Zinner Zinner Level 3I will make landing page and consult about your project | Blockchain Developer
- do an automated and manual solidity smart contract audit Verified Trusted Zinner Hot Zinner Zinner Level 3Manual and automated audit & code review report up to 500 line | We are a leading company in blockchain security and…
- build hack proof erc20 token smart contract in solidity ethereum bsc tron Verified Trusted Zinner Hot Zinner Zinner Level 3Secure smart contract. No customization | Enterprise Grade Smart Contract Audit and EVM Blockchain Development
- be blockchain developer for ore supply pump fun crypto bot smart contract solana Verified Trusted Zinner Hot Zinner Zinner Level 3I will develop smart contract with simple UI. Also consultant about project. | Blockchain revolutionized online trust and transactions
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- do smart contract audit for security solidity automatically Verified Trusted Zinner Hot Zinner Zinner Level 3For Tokens and without containing any libraries . Basic packages Not for NFT | SaferICO is a verified smart contract auditor on…
- do smart contract audit for security and performance solidity Verified Trusted Zinner Hot Zinner Zinner Level 3$2 / code line. This excludes comments and other empty spaces | Enterprise Grade Smart Contract Audit and EVM Blockchain Development
- be blockchain developer for dapp, smart contract, presale, staking and launchpad Verified Trusted Zinner Hot Zinner Zinner Level 3I will make consult about your project | Delivering Decentralized Solutions, Tailored to Your Needs
- do web3 solidity smart contract erc20, 721 erc1155 ,staking , minting dapp Verified Trusted Zinner Hot Zinner Zinner Level 3i will create ERC20 , ERC721 , ERC1155 token for you and deploy smart contract on etherscan | Senior Full Stack Developer
- be blockchain developer with meme coin, token, web3 dapp smart contract Verified Trusted Zinner Hot Zinner Zinner Level 3- consult your idea - create meme coin on Solana, base - dapp landing page
- create web3 ethereum smart contract solidity dapp Verified Trusted Zinner Hot Zinner Zinner Level 3Smart Contracts , Web3.js integration, NFT marketplace , Wallet integration. | Senior Full Stack Developer
Explore the Full Smart Contract Development Marketplace
See every available listing, or browse the full smart contract development category to view developer profiles, portfolios and verified reviews.
Zinns
- I will build scalable full-stack and Web3 dApps with secure smart contracts Verified Zinner Level 1I build scalable full-stack applications and secure blockchain solutions, from high-performance Web2 platforms to production-ready dApps and smart contracts on Ethereum and Solana. My service covers everything end-to-end,…
- develop custom smart contract and dapp for staking, raffles, vesting, mutation Verified Trusted Zinner Hot Zinner Zinner Level 3This provides only a zoom call for consultation before we can move on to coding.
- I will build a custom full stack web application with React, Node.js, and cloud deployment Verified Zinner Level 1I am Omughelli Vovwero — a dedicated and highly skilled Software Developer who builds clean, scalable, and high-performance software solutions tailored to your exact needs. From web applications…
- create ico presale website with presale smart contract integration Verified Trusted Zinner Hot Zinner Zinner Level 3Simple 1 section ICO message displaying website
Freelancer Categories
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Why Build Smart Contracts on Zinn Hub?
Zinn Hub is a fairer freelance marketplace built for Web3 projects — verified developers, escrow on every order, and crypto-native payments built in.
Escrow on Every Order
Your payment is held securely by the platform and only released once the work is delivered and you approve it.
ID & Skill Verified
Every seller passes identity and skill verification before listing — you always know who you are hiring.
0% Commission First $500
Sellers keep more of what they earn, with 0% commission on their first $500 in sales and tiered rates after that.
100+ Crypto Options
Pay in the cryptocurrency you already hold, or by card — ideal for Web3 teams and global clients.
Instant Payouts
Once an order is approved, sellers receive fast, instant payouts rather than waiting weeks for funds.
Verified Reviews Only
Reviews come from real, completed orders — so you can judge sellers on genuine client feedback.
Zinn Hub is operated by Zinn Digital Ltd, a company registered in England & Wales (Company No. 16385785), 71–75 Shelton Street, Covent Garden, London, WC2H 9JQ. Every order is covered by escrow and buyer protection.
Browse Smart Contract & Web3 Categories
Explore related categories and skills, or search contract services by type to find the right developer.
Browse by Category
Browse Zinner Skills
Find Smart Contracts by Type
Use Zinn Finder
Tell us what you need built and we'll help match you with verified smart contract developers for your chain.
Find a DeveloperBrowse All Freelancers
Explore every verified Zinner across Web3, development and design to build out your full project team.
Browse FreelancersOr Post A Smart Contract Development Project for Free
Submit a brief, set your own budget, and verified smart contract developers come to you with proposals — you choose who to hire. Every freelancer is ID-verified and skill-verified, and your payment is held securely in escrow by the platform until the work is delivered and approved.
How to Hire a Smart Contract Developer
From brief to delivered code in five steps — with your payment protected by escrow the whole way through.
Search or Post
Search contract services, or post a brief with your spec and chain.
Compare Developers
Review profiles, portfolios and verified reviews to find the right fit.
Order in Escrow
Place your order or accept a proposal — payment is held securely in escrow.
Build & Test
Your developer writes and tests the contract; review the deliverables.
Approve & Audit
Approve to release payment, then commission an independent security review.
Smart Contract Development FAQs
Common questions about hiring smart contract developers, pricing, chains and what's delivered.
Prices are set independently by each developer and depend on scope and chain. A single token contract costs far less than a tested, multi-contract protocol. Compare quotes, portfolios and verified reviews before you order, and pay securely through escrow.
They build token contracts (ERC-20, ERC-721, ERC-1155, BEP-20 and SPL), staking, vesting and escrow contracts, DeFi and protocol logic, and NFT and minting contracts, plus tests, upgrade patterns and fixes for existing contracts.
Solidity for Ethereum and other EVM chains, and Rust for Solana, plus various Layer 2s and app-chains. Coverage varies by developer, so check each profile before ordering.
Developers here aim to deliver clean, documented, tested code that is ready for an independent review. Development and auditing are separate steps; you can commission a review through the Smart Contract Audit marketplace. An audit reduces risk but cannot guarantee a contract is free of all bugs.
Every seller passes Zinn Hub identity and skill verification before they can list. You can review each developer's profile, portfolio and verified client reviews, and message them before you hire.
A simple contract can be ready in a few days, while a tested multi-contract system can take several weeks. Agree milestones and a delivery timeline with your developer before ordering.
Many deliver unit and integration tests and deployment scripts alongside the contract. Confirm exactly what's included on the profile or by messaging the developer first.
When you order, your payment is held securely in escrow by the platform and is only released once the work is delivered and you approve it. Zinn Hub charges 0% commission on your first $500 in sales, supports 100+ cryptocurrencies plus card payments, and offers instant payouts to sellers. Buyer protection and verified-only reviews apply to every order.
Hiring a Smart Contract Developer: What to Know
Smart contracts are self-executing programs that run on a blockchain, and they sit at the heart of almost everything in Web3 — tokens, DeFi, NFTs and dApps. Because they are immutable once deployed and often hold real value, the standard for quality is high: clean code, thorough testing, and a design that is ready to be reviewed. On Zinn Hub you can hire verified developers for Solidity or Rust, for a single contract or a whole protocol.
What Smart Contract Developers Build
The work covers a wide range of contract types, including:
- Token contracts — ERC-20, ERC-721, ERC-1155, BEP-20 and SPL.
- Staking, vesting and escrow contracts — with configurable rules.
- DeFi and protocol logic — lending, AMM and yield modules.
- NFT and minting contracts — collections, royalties and reveals.
- Upgrade patterns and proxies — for contracts that need to evolve.
- Tests, gas optimisation and fixes — for new or existing code.
Solidity vs Rust — Choosing a Developer
Your chain decides your language. Solidity targets Ethereum and EVM chains and has the largest ecosystem and tooling; Rust targets Solana and suits high-throughput, low-fee applications. Look at each developer's chains, shipped contracts, test coverage and verified reviews. For valuable contracts, prioritise developers who are comfortable working towards an independent audit.
Build, Test, Then Audit
Treat security as part of the build rather than an afterthought. Keep contracts small and well-documented, include tests, and plan a review before mainnet. After development you can commission an independent smart contract audit, and pair the contracts with dApp development for the front-end — remembering that an audit reduces risk but never guarantees a contract is bug-free.
