Islamabad, Northern Areas, Pakistan
$10/hr · Starting at $25
Decentralized App on Blockchain (Dapps) -> Smart Contracts ->wallet ->Front End -> Web3.js ->Testing
Banja Luka, Republika Srpska, Bosnia and Herzegovina
Past Earnings
$30/hr · Starting at $100
Professional work with Bitcoin, BitcoinCash and Ethereum blockchain technology. Working on crypto currency exchange services, smart contract deployment and automated finance.
Blagoveshchensk, Amur, Russian Federation
$50/hr · Starting at $100
Blockchain is a technology that can safely store transaction records on a peer-to-peer network instead of storing them in a single location. I have experience with Blockchain, Cryptocurrency, Ethereum…
Boyarka, Kyyivs'ka Oblast', Ukraine
$20/hr · Starting at $30
I have read your descript carefully and felt who this is just project for me. I am full-time developer and have rich experience in Python for 5 years. I am sure I can fulfill your requirements, and co…
Kharkiv, Kharkivs'ka Oblast', Ukraine
$25/hr · Starting at $1,000
- Developed 5 production blockchain platform for web and mobile app - Mainly used Rust, Solidity, Ink, Substrate, Web3.js, React.js, Node.js - Wrote many smart contracts with solidity inTruffle, Wasm
Hunchun, Jilin, China
100/yr · 100%
$30/hr · Starting at $5,000
Starlight NFT is a collection of 10k room NFTs inside the Starlight interplanetary ship. My role was to develop NFT contract using ERC721 on EVM and rebuild frontend using modern JavaScript frameworks…
New Delhi, Delhi, India
Good experience in enterprise and consumer application development. Familiar with blockchain application development using Ethereum. Familiar with ExpressJs, NodeJs and MongoDB and have developed mul…
Delhi, Delhi, India
$20/hr · Starting at $25
I have 4 years of experience in full stack development and have developed mobile apps as well as web application.I have worked on several technologies: Blockchain consensus mechanism (POW,POS,DPOS,POC…
Lahore, Punjab, Pakistan
$60/hr · Starting at $45
I'm a blockchain, Ethereum, solidity programmer and analyst. I help people understand blockchain and how they can use it by outlining use cases and how the it may or may not apply. Recently I have bee…
$75/hr · Starting at $3,000
Smart Contract Audit Blockchain Development EOS Initial Coin Offering Trading Platform Development Ethereum Bitcoin Decentralized Exchange Security Token
Vilnius, Vilniaus Apskritis, Lithuania
$30/hr · Starting at $400
Ethereum smart contracts, DApps, etc Using Remix IDE, Truffle and other tools ERC20 token, ICO and custom contracts
La Paz, La Paz, Bolivia
$15/hr · Starting at $25
I am specialized in blockchain development, but I can complement my work with frontend and backend development, using nodejs and React framework Smart contracts in solidity Api Ethereum explorer filt…
Guelmim, Guelmim-Es Smara, Morocco
$30/hr · Starting at $30
دمج Ethereum الذي طال انتظاره يوم الخميس ، 15 سبتمبر - حيث قامت blockchain بنقل بروتوكولها من إثبات العمل إلى نموذج إجماع إثبات الحصة الأكثر كفاءة في استخدام الطاقة - سيكون بالتأكيد أحد أهم الأحداث في…
Bender, Bender, Republic of Moldova
ID Verified
$30/hr · Starting at $2,000
Hello sir I have over7 years experiences with website && mobile app development. I am very familiar with cloud services such as AWS, cPanel, GoDaddy etc... I use bellow programming language and tools:…
Krasnodar, Krasnodar, Russian Federation
$50/hr · Starting at $150
Hello! I am new on upwork , but I have rich experience in blockchain software fields. My Skills fields 1. erc20/bep20, erc721/bep721, erc1155 smart contract etc 2. web3.js, node.js, react.js 3. integ…
Barcelona, Catalonia, Spain
$50/hr · Starting at $500
I am a senior Unity C# programmer and developer, based in Barcelona, with more than 6 years experience in Unity, and solid knowledge about multiplayer, FPS, RPG, AI, and more. I have good knowledge of…
Kyiv, Kyyivs'ka Oblast', Ukraine
$30/hr · Starting at $25
Skills: Solidity Development: Proficient in crafting smart contracts on Ethereum and other blockchain networks using Solidity. Experienced in creating secure and efficient decentralized applications,
East Rochester, New York, United States
$30/hr · Starting at $500
- 4+ years of experience in developing smart contracts using Solidity and Cadence. - Experience in DAPP development and interact with EVM/Solana/Flow/Stacks blockchain platform - Coursework includes…
Bengaluru, Karnataka, India
$15/hr · Starting at $500
Hi, Greetings :-) My name is Shakeel Ahamad Khan and I work as a BLOCKCHAINS(Bitcoin, Ethereum, Hyperledger, Lisk, etc.) FREELANCER. Just wanted to give you all a brief heads up on my background:- 1.
Port Coquitlam, British Columbia, Canada
$40/hr · Starting at $5,000
- Cryptocurrency Exchange Site (based on ETH, BTC, NEO) - ICO (Ethereum, Waves) - ERC20-23, Solidity, Smart Contract, Web3, Truffle - Cryptocurrency (Bitcoin, Ethereum, NXT, Vertcoin, NEO, Monero, ...…