I will build smart contract backend as a web3 developer and blockchain engineer
Gig Summary
Blockchain and AI Solutions Studio
Level 2
Has met high performance criteria and has a proven track record for meeting client expectations.
About this Gig
I create secure and efficient Web3 smart contracts for DAOs, NFTs, bots, and other decentralized applications. With deep experience in Ethereum and cross-chain protocols, I help you launch production-ready dApps with clean architecture and audit support.
Services Offered:
- DAO contract setup and voting mechanisms
- NFT minting (including lazy minting and royalties)
- Custom trading or automation bots
- Tokenomics: staking, vesting, burning, mining
- Smart contract audits and best practice implementation
- Web3 frontends in React (Uniswap-style interfaces)
- Backend integration with Node.js and MongoDB
- RESTful API and external system integration
Tools & Tech:
- Solidity, Hardhat, Truffle, Remix
- Web3.js, Ethers.js, OpenZeppelin
- React, MetaMask integration
- Mocha, Chai, Moralis
- Chainlink and cross-chain (Multichain, Hyperledger)
If you need a reliable blockchain engineer to build, test, and audit your Web3 contracts, let's work together.
Keep your assets and information safe
Cryptocurrency services focus solely on developing and programming. Never share sensitive information or private keys with others.
My Portfolio
24 reviews for this Gig
| (22) | ||
| (2) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
M malmutawa3

Bahrain
Hassan did an OUTSTANDING job with his blockchain development project. His impeccable documentation and attention to details made the experience seamless, and his language fluency and timely delivery were impeccable. Would highly recommend working with him again! 👍
$200-$400
Price
2 weeks
Duration
Helpful?R realworldasset

United States
Delivered as expected. Will absolutely be working together on more projects starting now and in the future.
$1,000-$2,500
Price
7 weeks
Duration
Helpful?D dipad_2025

Netherlands
very impressive. delivery is excellent, i'd definately recommend
$200-$400
Price
3 weeks
Duration
Helpful?D drexpress

United Kingdom
Hassan is the only guy i trust here. He's the best
$200-$400
Price
2 days
Duration
Helpful?M malmutawa3

Bahrain
so far so good, we are about to complete this project without any issues. Very smooth delivery process
$200-$400
Price
7 days
Duration
Helpful?
24 reviews for this Gig
| (22) | ||
| (2) | ||
| (0) | ||
| (0) | ||
| (0) |
Rating Breakdown
- Seller communication level
- Quality of delivery
- Value of delivery
Sort By
M malmutawa3

Bahrain
Hassan did an OUTSTANDING job with his blockchain development project. His impeccable documentation and attention to details made the experience seamless, and his language fluency and timely delivery were impeccable. Would highly recommend working with him again! 👍
$200-$400
Price
2 weeks
Duration
Helpful?R realworldasset

United States
Delivered as expected. Will absolutely be working together on more projects starting now and in the future.
$1,000-$2,500
Price
7 weeks
Duration
Helpful?D dipad_2025

Netherlands
very impressive. delivery is excellent, i'd definately recommend
$200-$400
Price
3 weeks
Duration
Helpful?D drexpress

United Kingdom
Hassan is the only guy i trust here. He's the best
$200-$400
Price
2 days
Duration
Helpful?M malmutawa3

Bahrain
so far so good, we are about to complete this project without any issues. Very smooth delivery process
$200-$400
Price
7 days
Duration
Helpful?

