Sell Your Blockchain Development Services Online
Turn your Solidity, Rust and Web3 engineering into a freelance business on Zinn Hub — the marketplace with three ways to sell in one platform: gig-style Zinns, Project bidding with free proposals, and a Freelancer Directory for direct hire. You keep 100% of your first $500, buyers browse in 45 languages, and every listing accepts cryptocurrency at checkout.
Already selling blockchain work elsewhere? Import it in minutes — free.
Paste one listing, or your whole public profile, into Import My Services in your Zinner dashboard. It rebuilds your title, description, packages and FAQs as ready-to-review Zinns, carries across up to 10 of your reviews word for word, and generates free images. You preview and confirm every Zinn before anything is submitted, and a whole profile can produce up to three complete Zinns at once.
Three Ways to Sell Blockchain Development
Most freelance platforms give you one workflow. Zinn Hub gives you three — use one, two, or all three. Each one draws on the same Solidity and Web3 engineering skills.
List fixed-price blockchain packages — an ERC-20 deployment, a staking contract, a wallet integration, a subgraph. Buyers purchase at checkout and, if you have connected your own account, payment lands in your PayPal or Stripe there and then. Productised work that sells while you sleep.
Bid on buyer-posted blockchain projects with free proposals — no credits to buy, no paid bids. Build a public Freelancer profile so founders and studios can hire you directly. This is where the longer protocol builds and retainers come from.
Offer small, fixed-price tasks at $5, $10, $15 or $20 — a testnet deployment, a gas-cost review, a wallet-connect fix, a contract read-through. A low-risk way for a buyer to try you, and a fast way to build reviews before the bigger work arrives.
Same Solidity skills. Three earning paths.
Blockchain Services You Can Sell & Earn From
Every specialism below can be sold as a Zinn, offered as a Micro Zinn, bid on through Projects, or showcased on your Freelancer Directory profile. Pick your niche and earn from all of them.
Smart Contract Development
Solidity, Rust and Move contracts — ERC-20, ERC-721, ERC-1155, staking, vesting and reward-distribution logic
dApp Development
Full decentralised apps — React front ends, wallet connect, ethers.js and web3.js integration, subgraphs
DeFi Development
AMMs, lending markets, yield vaults, liquidity pools, oracles and cross-chain bridge integrations
Token Development & Launch
Token contracts, mint and burn mechanics, presale and vesting logic, liquidity locking and launch support
Smart Contract Auditing & Security
Manual review, static analysis, fuzzing, gas optimisation and a written findings report with fixes
NFT Services
Minting contracts, metadata and IPFS pipelines, allowlists, reveal mechanics and marketplace listings
Tokenomics & Consulting
Supply and emission modelling, incentive design, treasury structure and governance frameworks
Web3 Design
dApp interfaces, wallet flows, dashboard UX and design systems built for on-chain products
Blockchain & Web3 Consulting
Chain selection, architecture reviews, node and infrastructure setup, and technical due diligence
Why Sell Blockchain Development on Zinn Hub?
Built for technical freelancers who want more from a marketplace than a single gig feed.
Three Ways to Sell
Not just gigs. List Web3 & Blockchain Zinns, bid on Blockchain Projects with free proposals, get hired from the Freelancer Directory, and offer Solidity Micro Zinns from $5. Several income streams, one account.
0% on Your First $500
0% commission on your first $500, then tiered rates that fall as you sell — as low as 7% on Agency Zinner. See the full pricing page for every tier and both membership rates.
Get Paid Your Way
Connect your own PayPal or Stripe account and buyers pay you directly at checkout — no waiting for a payout run. Prefer the platform to hold the payment until the order completes? Choose platform-protected payments instead.
Buyers Can Pay in Crypto
Every listing accepts cards, PayPal, Apple Pay, Google Pay, bank transfer or 200+ cryptocurrencies including Bitcoin, Ethereum and USDT — which matters when your buyers are already on-chain. No wallet setup needed from you.
Two-Way Custom Offers
Send a custom offer to a buyer, or receive a request from one. One-time or subscription pricing — useful for retainers, monitoring and post-launch support.
Full Payouts Dashboard
Track every transaction, commission breakdown and payout in real time, and export to CSV. View your payouts dashboard.
Subscription Services
Sell recurring work on daily, weekly, monthly or yearly billing — contract monitoring, node upkeep, security retainers. Hourly-rate services and video consultations are supported too.
Your Brand, Your Storefront
Your logo, your banner, your audit reports and shipped protocols. Build a branded storefront buyers remember, with unrestricted communication with clients.
Buyers in 45 Languages
Zinn Hub is available in 45 languages, and buyers can message you in 12 more. Prices are shown in USD, with an approximate equivalent in 59 display currencies.
Free Setup Help
Three guided wizards — Store Setup, Payment Setup and Zinn Creation — build your profile, publish your first listings and configure how you get paid, in about 15 minutes and completely free. Import My Services rebuilds your existing listings if you already sell elsewhere.
Every Zinn Hub seller gets an intelligence profile on the buyer in front of them — trust score, order history, spending pattern, rejection behaviour, refund rate, and the exact requirements they submitted on past orders. For blockchain work, where scope creep and vague briefs are the usual risk, that is the difference between a clean build and three weeks of unpaid rework.
Keep private notes for yourself, or share public notes with other Zinners so the whole marketplace prices risk more accurately.
Learn About Buyer Insights →How to Start Selling Blockchain Development
Three guided wizards get you selling in about 15 minutes. There are no upfront costs.
Store Setup Wizard
Sign up free at our registration page. The Store Setup Wizard builds your branded storefront — logo, banner, bio, certifications and case studies.
Payment Setup Wizard
Connect your own Stripe and PayPal so buyers pay you directly at checkout, or configure platform-protected payments where Zinn Hub holds the payment until the order completes.
Zinn Creation Wizard
Build your first blockchain listing with packages, pricing and delivery times — or a dApp Micro Zinn from $5. Then switch on Projects bidding and your directory profile.
What Does Freelance Blockchain Work Pay?
Typical market ranges for the kind of scope buyers usually brief. These are wider-market figures, not Zinn Hub earnings.
Rates vary widely by chain, scope, complexity and experience, and a quoted range is never a guarantee. You set your own prices on Zinn Hub, always in USD, and you decide what each package includes.
Who Can Sell Blockchain Development Here?
Zinners are verified with government-issued photo ID and evidence of their skills and past work — beyond that, the door is open.
Independent Blockchain Engineers
Solidity, Rust or Move developers who want steadier client flow and a bigger share of each invoice. Specialise in one chain or cover several.
Web3 Studios & Agencies
Small teams adding a marketplace channel. List team capabilities, run several briefs at once, and use subscriptions for ongoing maintenance.
Developers Moving Into Web3
Coming from backend or front-end work? Start with Micro Zinns at $5 to $20, build a review history on small contract tasks, then move up.
What You Get as a Zinn Hub Blockchain Seller
Everything below is how the platform works today.
| Feature | Zinn Hub |
|---|---|
| Ways to sell | Three — Zinns, Projects and a Freelancer Directory profile |
| Commission | 0% on your first $500, then tiered rates that fall as you sell — as low as 7% on Agency Zinner |
| Buyer platform fee | None — the price a buyer sees is the price they pay |
| Cost to bid on a project | Free proposals — no credits to buy |
| Getting paid | Connect your own PayPal or Stripe and buyers pay you directly at checkout |
| Starter listings | Micro Zinns at $5, $10, $15 or $20 |
| Buyer payment methods | Cards, PayPal, Apple Pay, Google Pay, bank transfer and 200+ cryptocurrencies |
| Currency | All prices in USD, with an approximate equivalent in 59 display currencies |
| Reach | 45 site languages, plus 12 more you can be messaged in |
| Seller verification | Government-issued photo ID and evidence of skills and past work |
| Refunds | Credited to the buyer’s Zinn Wallet in full, in USD |
| Posting a project | Free for buyers — they pay only when they accept a proposal |
Full tier thresholds and membership rates are on the pricing page.
Frequently Asked Questions
Smart contract development in Solidity, Rust or Move; dApp builds with wallet connect and indexing; DeFi protocols such as AMMs, lending markets and yield vaults; token development and launch support; contract auditing and gas optimisation; NFT minting infrastructure; tokenomics modelling; and Web3 design. Each of those can be a fixed-price Zinn, a Micro Zinn from $5, a bid on a posted Project, or a specialism on your Freelancer Directory profile.
0% commission on your first $500, then tiered rates that fall as you sell — as low as 7% on Agency Zinner. The rate is the same whether a buyer pays you directly or through platform-protected payments. Buyers pay no platform fee at all, so the price on your listing is the price they pay. The pricing page lists every tier threshold and both membership rates in full.
There are two payment modes and you choose per listing. Connect your own PayPal or Stripe account and buyers pay you directly at checkout, so there is no payout run to wait for. Or choose platform-protected payments, where Zinn Hub holds the buyer’s payment until the order completes and pays you from the payout queue afterwards. Everything is tracked in your payouts dashboard.
Yes. Every Zinn Hub listing accepts cards, PayPal, Apple Pay, Google Pay, bank transfer or 200+ cryptocurrencies including Bitcoin, Ethereum and USDT. You do not need to set up a wallet to accept crypto — the checkout handles it. All prices are stored and charged in USD, and buyers can view an approximate equivalent in any of 59 display currencies.
No certification is required. What Zinn Hub does require is verification: every Zinner is checked with government-issued photo ID and evidence of their skills and past work. Beyond that, your deployed contracts, public repositories and client reviews do the talking. If you are new to the platform, small Web3 Micro Zinns are the quickest way to build a review history.
Yes. Zinn Hub supports subscription services on daily, weekly, monthly or yearly billing, which suits contract monitoring, node upkeep, post-launch support and security retainers. You can also sell hourly-rate services and video consultations, and send two-way custom offers so a buyer can request a bespoke scope from you rather than only buying a fixed package.
Use Import My Services in your Zinner dashboard. Paste one listing and it rebuilds the title, description, packages and FAQs as a ready-to-review Zinn; paste your whole public profile and it proposes up to three complete Zinns. Up to 10 of your reviews come across word for word, images are generated free, and you preview and confirm before anything is submitted. It is free, and you get 10 free imports.
Refunds on Zinn Hub are credited to the buyer’s Zinn Wallet in full, in USD — there is no refund-to-card flow. Before you accept a brief you can check the buyer with Buyer Insights, which shows their order history, refund rate, rejection behaviour and the requirements they submitted on past orders. For a first-time buyer, a small Micro Zinn is a sensible way to test the working relationship.
Start Selling Your Blockchain Development Services
Three ways to sell — Zinns, Projects with a Freelancer profile, and Micro Zinns at $5, $10, $15 or $20. 0% commission on your first $500, then tiered rates that fall as you sell — as low as 7% on Agency Zinner. Connect your own PayPal or Stripe and buyers pay you directly at checkout. Three wizards get you selling in about 15 minutes.
Explore More Services to Sell
Connect with Zinn Hub
Follow us for platform updates, tips, competitions, and community news. We’d love to connect with you.
- Facebook @zinnhub
- Instagram @zinnhub
- TikTok @zinnhub
- X (Twitter) @ZinnHub
- YouTube @ZinnHub
- LinkedIn Zinn Hub
- Telegram @zinnhub
- Pinterest @zinnhub
- Reddit r/ZinnHubMarketplace
