Smart Contracts Jobs


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    33 trabajados encontrados, precios en USD

    Hola Necesito una persona con experiencia en contratos inteligentes para realizar un sistema de referidos como se muestra en el archivo adjunto. Si la persona cuenta con experiencia en uso de la herramienta low code sería mucho mejor. Saludos

    $191 (Avg Bid)
    $191 Oferta promedio
    5 ofertas

    I need a senior iOS expert. He must have 7+ years of experience with it and familiar with AWS(Cognito, Amplify, API gateway, Lambda). Also if he has deep knowledge of blockchain, it is a big plus. He must have hands on experience with Stripe payment in iOS. This is ongoing project. If you can start immediately, please apply with your previous projects. Thanks

    $1000 (Avg Bid)
    $1000 Oferta promedio
    8 ofertas
    Looking for senior solana Expert 6 días left

    Hello We are looking for senior solana NFT expert. NFT design is already ready. You need to check defi site and find out current issue. You must start right now. Thank you

    $1229 (Avg Bid)
    $1229 Oferta promedio
    34 ofertas
    React.js & Smart Contract -- 2 6 días left

    The work is to develop & Improve some React.js & Smart Contract sections.

    $113 (Avg Bid)
    $113 Oferta promedio
    96 ofertas

    I need help to set up a portal so as to allow my client to set up their own smart contracts themselves and forward to the counter parties through emails.

    $256 (Avg Bid)
    $256 Oferta promedio
    41 ofertas

    we want an trading bot that will trade on decentralized pancake swap exchange. Please share your offers. will discuss through chat.

    $309 (Avg Bid)
    $309 Oferta promedio
    13 ofertas

    i want a sandwich bot for crypto along with the arbitrage bot as well and on bsc chain....if you already have one and need to prove if it profitable or not

    $690 (Avg Bid)
    $690 Oferta promedio
    9 ofertas

    prePO is looking for a Web 3 Fullstack Engineer to architect, develop, test, and deploy code for novel DeFi applications. Candidates should have excellent React proficiency, strong technical leadership, a consistent track record of solving critical engineering problems, and a strong interest in DeFi and crypto in general. Our core tech stack is React, , TypeScript, MobX, mst-gql, and TypeChain for writing application logic, Jest for testing, ESLint and Prettier for code style and safety, and Vercel for CI/CD. Our mission is to democratize pre-public investing - transforming a world of financial exclusion into a world of permissionless access. ? At prePO, we are building a fully-remote, globally-distributed dream team. Like a professional sports team, we want every player on the field ...

    $19527 (Avg Bid)
    $19527 Oferta promedio
    31 ofertas

    We have BNB liquid in code on the bnb chain. We are looking for a colleague who can transfer these liquids to our wallet in a usable form using the bsc bridge.

    $162 (Avg Bid)
    $162 Oferta promedio
    9 ofertas

    Making a market place to sell picture on Blockchain.

    $719 (Avg Bid)
    $719 Oferta promedio
    28 ofertas
    APTOS Blockchain Developer 5 días left

    We need somebody capable to code on MOVE language for APTOS/SUI blockchains. - NFT minting - Smart contracts - Marketplaces - Air-drops Please let us know if you have experience and let's get started immediately.

    $679 (Avg Bid)
    $679 Oferta promedio
    31 ofertas
    Template Descriptions 5 días left

    Please find enclosed several example documents which shall provide you with an overview and an idea of what we request. Afterwards, once we have found an agreement, we will provide other documents to do the same. 1.) VMT-Form Job Specification-V0-Sro a. Introduction to the service requested (read carefully) 2.) VMT-Give and Take List-1-Standart a. One example from many forms we are requesting the service as described in n° 1. b. This form represents the average complexity we will provide to do further jobs, there are others which are more or less complex (some very simple). 3.) VMT-Form description (Template) a. related to n° 2. filled as an example for your reference b. Shall serve as an example of an application 4.) VMT-Form description (Template (blank) a. Contains further inf...

    $26 (Avg Bid)
    $26 Oferta promedio
    6 ofertas

    I am looking for someone to help me set up a signal provider script for the Flare Network

    $168 (Avg Bid)
    $168 Oferta promedio
    6 ofertas
    NFT Project OLIO 3 días left

    We would like to create a digital NFT that will represent a physical product. There will be approximately 100 NFTs to begin with and we will add more as the products release We would like to pay out a percentage of prouct sales to the NFT holders. This means we need to be able to get a snapshot of each holder of each NFT at any time. We would like the project to be on polygon and to be able to auction off the first sales of the NFT on major marketplaces such as Opensea.

    $586 (Avg Bid)
    $586 Oferta promedio
    28 ofertas

    Hello everyone, There is an project has not published yet, it's an Smart contract language. If you are pro blockchain developer and speak good English, you can contact me for more info. Thank you, Safwan

    $41 (Avg Bid)
    $41 Oferta promedio
    17 ofertas
    crash game 3 días left

    job description: -full stack blockchain dev to develop crash game in solana -must have incredible design skills and build everything from A-Z -design front end and backend included -we have images and references of how we want it to look but you must do the rest -we have open source crash script too , time wasters will be ignored.

    $2768 (Avg Bid)
    $2768 Oferta promedio
    28 ofertas
    Crash game 3 días left

    Looking for full stack blockchain pro who can develop a game of Crash game inside the SOLANA blockchain for me, you must have connections to design and build everything from A to Z, design and front end included. We have images/references of how we want it to look, but you must do the rest. We have open source Crash script too, time wasters will be ignored.

    $5009 (Avg Bid)
    $5009 Oferta promedio
    25 ofertas
    Create Crypto Token 3 días left

    Dear Freelancers I would to create a new token so looking for someone who can take the project end to end creating the white paper and all details about the created token Lower price freelancer will be awarded

    $635 (Avg Bid)
    $635 Oferta promedio
    34 ofertas

    Simple one page that will create/start contracts on 3 chains. Default supply of the contract will be 10,000,000. Fill out the basic info and select the chain to create the contract on. After the contract is created then it us usable in the bottom section to mint an item. The only options on the bottom will be for the contracts started. This will not be a swap or anything like that. It will not mint on all 3 chains at once. Only the chain selected in the network drop down that includes contracts started in the top section. The options should be pretty straight forward. If I am missing any required items for the contract start or mint then please let me know. Images will be uploaded from the local computer, stored and url supplied in the metadata. Trait type will just be one, trait_ty...

    $563 (Avg Bid)
    $563 Oferta promedio
    29 ofertas

    need a dev to create a presale dashboard built in ReactJs in order to conduct a token presale. The token will be distributed in the BSC network (deployed network). User arrives at the Presale Dashboard and will find a “connect wallet” button on the top right corner and a dashboard with our own branding. Users will be able to connect their DEX wallets and connect to the dapp. Connected users can now buy presale tokens using their DEX wallets. Requirements: Users can contribute with the following tokens and networks: BEP20 - USDT / BNB - ERC20 - USDT / ETH - All bought tokens will be subjected to a vesting schedule and locked on chain. Users will be able to see and claim the tokens in a separate progress dashboard (new page, Front End (Multichain React website (2 chains) wi...

    $1724 (Avg Bid)
    $1724 Oferta promedio
    68 ofertas
    build me an arbitrage bot 2 días left

    I need an arbitrage bot that needs to be developed so that it can utilize flash loans to make arbitrage trades on platforms like Uniswap, Sushiswap, Balancer, and other reliable DEXs. The bot should have the ability to scan for opportunities and detect price differences between exchanges. Once an opportunity is identified, the bot should swiftly execute flash loans from Aave or Dydx to execute trades. The bot should determine the necessary flash loan amount (collateral) and execute flash loan arbitrages with the appropriate gas fee to avoid being outrun by other bots. The bot should also automatically and simultaneously repay the flash loan, pay the gas fees, and send the profits to the wallet address of the owner.

    $660 (Avg Bid)
    $660 Oferta promedio
    40 ofertas

    Upgrade my ready to use Web 2 games to Web 3 for Hedera and Hashpack integration. Its for NFT based game but right now I only need Hedera and hashpack integration.

    $735 (Avg Bid)
    $735 Oferta promedio
    8 ofertas
    Smart Contract development 2 días left

    Need to copy a smart contract in bsc chain and deploy

    $251 (Avg Bid)
    $251 Oferta promedio
    27 ofertas
    need a blockchain integration dev 2 días left

    need to connect the front end to the smart contract. web3js or etherjs

    $5 / hr (Avg Bid)
    $5 / hr Oferta promedio
    19 ofertas

    We are looking for a flappy bird style html5 game with a custom character and obstacles. the exact character will be supplied to the developer we pick. An algo contract will have to be setup for each game run. Every week is a new game. Game fee will be split between a prize wallet and a master wallet. after the game play the score will be recorded on the nft, they will then be given the option to tweet their score. Main website will be simple, it will show the current game on the top to play. Will have a high score board with prize amounts listed for those current places and a timer of when the game ends. show past games below with the winners and amounts. game needs to work on desktop and mobile. wallet connect with pera and myalgo please give me a bid time and amount

    $671 (Avg Bid)
    $671 Oferta promedio
    54 ofertas
    Coinswap dex 1 día left

    I need dex like sushiswap and i want new feature single sided liquidity . Also i need algorithum stable coin

    $1259 (Avg Bid)
    $1259 Oferta promedio
    19 ofertas

    Flashloan arbitrage smart contract using equalizer finance bridges cross chain

    $746 (Avg Bid)
    $746 Oferta promedio
    30 ofertas

    TASK 1 An existing Web3 DApp frontend page is to be transferred from its current prototype state into a production ready state. The application is written in React.js and Javascript and should be ported to and Typescript. The page is fully functional, it uses library for the communication with the smart contract. All existing graphics, texts and the layout design should be taken over. So the task is mainly around technological port, improving efficiency and code structure and making the web application responsive. Required Skillset: Develeoper must have excelent communication skills and fast response time. Fluent in English and/or German. We are working on slack for communication • Expert web3 designer and web developer • Expert knowledge in React.js, , Javascript...

    $16 / hr (Avg Bid)
    Acuerdo de Confidencialidad
    $16 / hr Oferta promedio
    32 ofertas
    NFT Smart Contract 12 horas left

    Shortly we need; ERC721A NFT Smart Contract YIELD contract Proxy Contract Openzeppelin libraries will be used in the contract; trouble-free and reliable one should be used. ---What we need is; Technical Specifications ♠ Chain: Ethereum Network ♠ Total Supply: 700 ♠ Standard: ERC-721A ♠ Category: Utility, Ticketing, Royalty ♠ Payment Method: ETH ♠ Storage: IPFS ♠ Mint Date: TBA ♠ Mint Price: 0,08 ETH ♠ Service Included: Buy, Sell, Mint, YIELD (Buy,sell 3rd party) ♠ Integration: OS ♠ WL: 350 WL SPOT / 350 FCFS ♠ WL Sale: 1 wallet max 20 qty can mint ♠ Public Sale: FCFS / no limit to mint ♠ Traits: No No team mint. Need a extra safe proxy contract for this smart contract to up...

    $20 / hr (Avg Bid)
    $20 / hr Oferta promedio
    36 ofertas
    NFT Deployment Process 6 horas left

    Hi, hope you're having a good day... I need assistance with a problem I'm facing during the final stage of deployment process, please don't hesitate to message me

    $465 (Avg Bid)
    $465 Oferta promedio
    30 ofertas
    smart contract and web3 3 horas left

    Need small issue fixed in a web3 call, on trust wallet and metamask app call

    $20 / hr (Avg Bid)
    $20 / hr Oferta promedio
    13 ofertas
    smart contract program in Matic 3 horas left

    i want to write a smart contract using Matic

    $149 (Avg Bid)
    $149 Oferta promedio
    13 ofertas

    I need pre-build ERC721A Merkleproof gas optimized smart contract with all other functions with dapp integrated code. in this way I can use code with multiple project

    $10 - $30
    $10 - $30
    10 ofertas

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