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    2,000 solidity delegatecall proiecte găsite, la prețul de USD

    Hello, i am looking for blockchain developer with good experience for long term work

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    ...when we select the freelancer. We are still gathering info. Requirements : - You must have built at least one or two NFT marketplaces on Binance Smart Chain that are live right now. Please provide links to the marketplaces you developed. - You must show your sample NFT marketplace SOW or BRD from the past so we know you are keeping up with documentation - You must have 3 years experience with solidity (Especially, ERC721 and ERC1155). If you are interested please send some bullet points of what you can build along with your price. If you have special features you would like to add to the marketplace that are new or innovative please tell us as that could help us decide on the freelancer to chose. Also if you want to tell us what is good or bad about Opensea or Niftygateway...

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    Smart Contract Expert S-a încheiat left

    Our company is looking for professional blockchain developer who has rich experience in smart contracts(5+ years), solidity, solana and rust Selected developer will work on smart contract field with our team.

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    Web3 dApp -- 2 S-a încheiat left

    We are a California Company, 23+ years bringing ideas to life. We are in the production stage of a Dapp and different Blockchain ecosystem tools and NFT games. We are looking for a developer specialized in Web3 development working with Solidity, Infura, Moralis… time is quite sensitive. We need to create a bridge or a function from a chain and in a deep layer from a mining contract to a DEX. There are thousands of script resources available and templates ready to get a line changed, And must be done in 3 days. Buscamos programador web3 con dominio de Solidity, Infura, Moralis… para proyecto en dApp Urgente! La fase a crear consiste en connectar bien mediante code o bajo smart contract una nueva blockchain con DEX 1inch Gran cantidad de recursos a usar, inc...

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    Smart Contract S-a încheiat left

    I would like to use to create a small smart contract using solidity programming language. This should be similar to a market shop.

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    Looking for Ethereum/Solidity developer to configure BlockScout block explorer on the Songbird Network by following the documentation on BlockScout. BlockScout is a blockchain explorer used by many EVM compatible blockchains.

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    Looking for Ethereum/Solidity developer to configure BlockScout block explorer on the Songbird Network by following the documentation on BlockScout. BlockScout is a blockchain explorer used by many EVM compatible blockchains.

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    Web 3.0 analytics tool S-a încheiat left

    I am looking for someone who is working on solidity and other web 3.0 blockchain technology. I am looking for someone to create a competitor to the Nanson analytics tool. Send me your proposal and lets talk. thanks

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    Good day, we have a working trading application and will like to integrate it or build a new application for an online website we are making. We already have server and website running. We are looking for someone who already have built snipping application and know how to integrate with online website. -Applicant must have experience in Solidity, Nodejs, etc. Will be required to show proof of past work experience. -Applicant must agree to do a KYC(know your customer) identification with our team. -We will be rolling out, snipping, frontrunning, trading and many more applications on our platform as this is long term project.

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    Were looking for solidity developer that has experience with solidity, we already have the contract but we want it to be optimized and be able to deploy in polygon, were currently having issue deploying in polygon so we need help. Were using upgradable contract by openzepellin

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    Game NFT MMORPG S-a încheiat left

    Necesito de un equipo de trabajo para terminar un proyecto Blockchain, el cual ya tiene avances pero se debe de Integrar los smart contract al juego, necesito de varias personas que estén dispuestas a sumarse al proyecto, requiero de diseñadores, programadores, seguridad digital y de block chain, community manager, lenguajes c++, phyton, react, php, Solidity, lenguajes complementarios del área también, El pago se hará con % de la liquidez del proyecto, proyección de lanzamiento 3 meses, pagos 20/30/50 una vez esté terminado y funcionando así como la permanencia de ingenieros y del equipo de trabajo para la apertura y logística de forma fluida.

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    1. Build a simple betting contract that rewards correct guesses of outcomes. Has a readme file that spells out all requirements. 2. Build a simple wallet contract in Solidity that stores the owner's funds. Has a readme file that spells out all requirements.

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    Solidity Contract Project S-a încheiat left

    Goji Crypto (“Goji”) is a Software as a Service (SaaS) platform that aims to allow businesses to leverage the power of the blockchain with ease. With a single, easy-to-use dashboard, the Goji platform will provide ease for businesses when it comes to receiving online payments (consumer to business), as well as sending and receiving funds to other businesses or institutions (business to business). I'm looking for a smart contract sample to create robustly. What I want from the contract is to allow people to stake ERC20 tokens and in doing so get the same ERC20 tokens.

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    I need someone able to add different features to a ReactJS website. (About us, Roadmap, and leave a template for me to change) It will be a plus if you know some solidity, or anything related to smart contracts and how the dapp is set. If you need more information let me know and I will share the code privately.

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    We are looking for a video streaming expert who has good knowledge in Solidity and Smart contract development. The main issue is on video streaming part and smart contract is working as expected. The smart contract is deployed on optimism testnet and if the candidate is able to deploy to optimsim mainnet it would be a great bonus. We are using landpeer streaming API for video streaming and using node proxy server which communicates with lanpeer server. The front end is built on React. We need to launch the demo next Wednesday. Please apply this job if you are able to work over the weekend.

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    writng a smartchain contract that deploys crypto tokens I have such a contract:pragma solidity ^0.8.2; contract Token { mapping(address => uint) public balances; mapping(address => mapping(address => uint)) public allowance; uint public totalSupply = 10000 * 10 ** 18; string public name = "Nuri"; string public symbol = "NURI"; uint public decimals = 18; event Transfer(address indexed from, address indexed to, uint value); event Approval(address indexed owner, address indexed spender, uint value); constructor() { balances[] = totalSupply; } function balanceOf(address owner) public returns(uint) { return balances[owner]; } function transfer(address to, uint value) pub...

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    We are looking for a Blockchain developer to work with us on the long term relationship. You need to have enough experience in Blockchain like Ethereum, Solana, EOSIO, Defi, DApp, Smart Contract with Solidity, Rust, C++, Web3. How to build bridge for various chains and so on. NFT marketplace development experience is plus including front-end technologies. Feel free to reach out to me if you are interested. Provide your previous projects plz.

    $15 - $25 / hr
    Sigilat
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    18 oferte
    Solidity Developer S-a încheiat left

    Solidity developer role We have some interesting work in the field of solidity and web3. If you are an expert in web3 and solidity this role would be a good fit. System - Solidity 0.8.0 Minting coins, transferring coins, getting balances - all in contracts Using javascript api console for web3 Running nodejs to test the contract Ubuntu 20.04 You will need good skills in the following - Contract addresses Accounts Balances Gas costs Testing contracts on a VM SSH Ubuntu CLI Nodejs (Web3 functions only) and basic Nodejs IP and port connections to nodes using web3 and http The work involves testing a private testnet - Fantom - to make basic contract functions work. We have a full spec.

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    We are in need of BEP-20 Smart Contract. The Smart Contract BEP-20, Binance must be developed with Solidity. You will work with our in-house developer who is busy currently with other tasks, so we need assistance from you. You must also comment and document all works. Be aware, it must be a very secure BEP-20. Secure Blockchain smartcontract. INCLUDING FEATURES: Smart Contract - with loyalty (staking) - with liquidity - configurations per token Airdrops - gamification (% per task) Give-a-ways - selected users Affiliate - on token airdrops - on token purchases BUDGET: $250 - $400 TIME: One / Two weeks

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    NFT & Metadata expert S-a încheiat left

    Looking for a person who can work with us in our project , related to NFT, solidity, smart contract expert, metadata , open sea

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    Hello I need to mplement power perpetuals as solidity code You can use this paper as guideline Thank you

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    you should be abel to write the smart contract and to implement the coins so that as they are being build that they will be packed with graphic data. we want to generate animated coins what is needed: solidity webdesign word press etc.

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    We are helping European startups to find the best developers out there. Right now, we need several Senior React.js developers. If you love React.js and you want to have a great remote job - please apply! Main requirements: - +1 years of experience with React.js; Node.js, Blockchain - Upper-intermediate English level We can offer: ✔️ 100% remote work; ✔️ Competitive compensation; ✔️ Very flexible working schedule;

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    The Web Developer will be part of a high-performance feature-driven development team responsible for building enterprise-level eCommerce platform solutions. Entry-level of proficiency (Junior, Middle, or Senior Web Developer) will be determined on the interview. We are helping European startups to find the best developers out there. Right now, we need several Senior React.js developers. If you love React.js and you want to have a great remote job - please apply! Main requirements: - 1 years of experience with React.js; - Upper-intermediate English level We can offer: ✔️ 100% remote work; ✔️ Competitive compensation; ✔️ Very flexible working schedule;

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    Trophy icon Smart Contracts - ETH S-a încheiat left

    I need a cryptocurrency on the Ethereum network: ERC20. The name of the token is: C77. Deliverable: The token connected to the blockchain. Complete documentation and project code. Token conect to exchange Accepted File Formats: python, java, LLL, resource library than Solidity.

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    Recomandat Garantat

    Hello, i am looking for blockchain developer with good experience for long term work

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    We are looking for a blockchain developer for launching upcoming NFT project to create the mint function, smart contract, We are looking for a solidity dev for our Ethereum based NFT project. We are hoping to mint by the end of December. We are offering $10,000+ and possible percentage of the profits depending on how involved the developer wants to be after the initial build. The main things we are looking for is someone to write and deploy our smart contract, help with mint integration into our website, consult with us using past NFT experiences to develop the best system and tools needed to make our project a success.

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    Hi, I am looking for a fulltime web developer to start immediately. 2 years experience in GIT.

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    We need React.js, Node.js, Blockchain (Web3, Solidity Smart contract) developers urgently! Please, send me a message and let's check how we can shape your potential.

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    FireFlyToken -- 2 S-a încheiat left

    I’m looking for a developer who can develop something similar to an online app that runs on the Binance smart chain. That you use my token specifically to gamble poker and other card games with. With the option to add other tokens or coins. So prefer someone with solidity and blockchain development

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    We need experienced solidity developers. We are working on launching a decentralised index protocol. We've been working on the project for over a year. We need some extra help on the solidity side! The team is split between London and Kyiv. If we work well together, we would love to increase hours and work out a longer-term fixed fee. We ask that you attend one call with our tech lead (who speaks Ukrainian & English) which is paid for. So we can assess the best ways to work together. Let me know when you're free to connect and get the ball moving. We look forward to your reply, Charles

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    I need a blockchain writer who can write a voting smart contract. This smart contract will run on binance smart chain. Bid here only when you have extensive solidity experience

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    Project for Alexander D. S-a încheiat left

    Hi Alexander, We are working on launching a protocol. Need some extra help, on the solidity side. When are you free to run you through the project? We can then figure out the best way to work together. We have a lot of development to do - we can work out hours needed etc. Do you use telegram? I look forward to your reply, Charles

    $40 - $40 / hr
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    0 oferte

    We have an Nft project, and we need an expert developer who can code our : - website - smart contract

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    I want to create a Decentralized Application like or like or Dex like with some changes (customs). Currently I am looking for a senior Solidity Programming Language + Blockchain development engineer etc related to blockchain, I am ready to pay and monthly salary in the form of maintenance fees or whatever according to the agreement. Preferably from Indonesia

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    Need an exact Dapp like including smart contract, solidity code will be found in the

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    Fork Pancakeswap S-a încheiat left

    I am looking for a team to fork pancakeswap using my own bep20 token. I want teams specialised in web3js, solidity, react.js and more. i'm looking to build a social network for crypto. 1. So, the social network has to avoid tracking at any cost, the only login we want is through Metamask. On project pages there have to be graphs and charts on one side of the sidebar, or i am available for discussion for the gui if you have any ideas. The projects have to have also a menu there where they can submit links to their socials, website, whitepaper etc. Logins and logouts only through Metamask or Walletconnect. Please check their API integration and also Wowonder. If you need wowonder files i can send them here. The platform has payment processors inside, but we dont want any of...

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    Web3 dApp S-a încheiat left

    We are a California Company, 23+ years bringing ideas to life. We are in the production stage of a Dapp and different Blockchain ecosystem tools and NFT games. We are looking for a developer specialized in Web3 development working with Solidity, Infura, Moralis… time is quite sensitive. We need to create a bridge or a function from a chain and in a deep layer from a mining contract to a DEX. There are thousands of script resources available and templates ready to get a line changed, And must be done in 3 days. Buscamos programador web3 con dominio de Solidity, Infura, Moralis… para proyecto en dApp Urgente! La fase a crear consiste en connectar bien mediante code o bajo smart contract una nueva blockchain con DEX 1inch Gran cantidad de recursos a usar, inc...

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    ...Responsibilities Hands on with solidity contract development Research, design, develop, and test blockchain technologies Brainstorm and help evaluate applications for new tools and technologies as they continually evolve Maintain and extend current client- and server-side applications responsible for integration and business logic Be involved in the global blockchain community--work on implementing and integrating the latest improvement proposals Document new solutions as well as maintaining that of existing ones Skills Strong software development background Experience working with large codebases Experience working with open-source projects Strong knowledge of common algorithms and data structures Familiarity with basic cryptography Familiarity with solidity Strong kn...

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    I am looking for senior blockchain developer who has a deep experience with Solidity, Smart Contracts, Ethereum, , NFTs, ERC721, MetaMask, Whois Service, ENS, Truffle, and Hardhat for large project.

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    Hello, there. We are looking for a developer with blockchain/solidity experience for our long-term project. The project has already started and we are looking to grow our team. Important: You need at least 2 years of blockchain development experience in order to be considered for the job position! Answer these questions when you are sending your offer: 1. Tell me more about your blockchain/solidity experience? 2. What solidity experience do you have? 3. How much do you want to be paid per month for a full-time(40 hours per week) contract? 4. What blockchain project you have worked on? Can you verify your work on them? 5. Send your GitHub link if you have one?

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    ...suitable for Nfts ( 0 Gas fee, Up to 9000 transactions/sec, high security) If it s not possible we will go for a standard Layer 2 such as Polygon (Matic) network. Starter kit Welcome to Immutable X! We ensure that NFTs are minted and traded in an open, decentralized ecosystem, secured by Ethereum, all with zero gas fees for minting and peer-to-peer trades. To use Immutable X, you don't need to learn Solidity, blockchain development, or how to work with Ethereum events and nodes. Instead, Immutable X uses REST APIs as a simple, familiar method for building your application - you can now launch your NFT project in hours, not weeks. ...

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    Blockchain developer need. S-a încheiat left

    I have a project using solidity and web3js. It was worked well but now have a issue. If you are expert, you can fix it within an hour. thanks.

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    Solidity contract deploy S-a încheiat left

    Create and Deploy a solidity contract

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    Basically I need DAPP to be embedded on our current website. The dapp will just be to track the rewards of our current holders. I also need to have a swap and fiat to crypto along with. All these can be done using Moralis, they have some tutorials on their YouTube which would be fairly easy to follow for a seasoned solidity dev. I will have this dapp embedded/iframed on our current social network site. Sample of the dapp is similar o this.

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    Recomandat Urgent
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    Hello, I'm looking for a solidity developer with a good experience in Defi to work with me and my team on two fields : - Analyse structure of a few given smart contracts (ETH AND BSC) and then explain their structure in an easy way to the team. - Develop ERC20 / BEP20 Tokens with different options and complexity (tax on buys, anti-whale mecanism, proxy contract, etc.) I have good knowledge in solidity and deployment on mainnet / testnet so I just need someone who will code efficiently and help me with the tech building part. Looking for someone with good reactivity, knowledge and ethics. Looking to have a long term partnership for development (for future projects also). If you also know how to create Dapps that will be a real + for future projects, but for now most...

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    Tron TRX Web3 Developer S-a încheiat left

    If you're familiar with Tron $TRX Web3 Development, Java, Solidity please contact. Can turn into a long term client

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    Hello, I will soon buy a business related to crypto-currency. The business receives the money in ETH on an ERC-20 wallet, so the owner will give me the private keys to receive the money. The concern being: I can't change the private key...log into the wallet and take the money. I can't change the wallet to receive the money either, because it is written in the smart contract. In short, the only solution is that a script ? A program? A new smart contract? Could automatically transfer the ETH from the initial wallet to a new wallet that I would have created (which, this time, will belong to me entirely). I don't know if I need a solidity expert for this or if it's feasible in another way! Please contact me with an ETA, a fixed price and a explanation how you w...

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    dapp solidity developer S-a încheiat left

    We are looking for a senior dapp solidity developer to help us build our dSaaS Vendor Admin and User management portal. The portal will need to automatically debit client wallets hourly and deposit to the admin wallet. Sometimes it will need to auto-swap from a token to a stablecoin as it debits client wallets and deposits to admin’s. Main part security scalability and automation as transactions will happen every hour for each item under the user console. The other components are the usual about admin/user portals. The user will be able to buy crypto to fund their account wallets to fund their services. I already have UI/UX working on it. We want to host the backend on AWS elastic containers. Solution will run on Polygon network.

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    I am looking for a web developer to do some front/backend coding for our NFT website, specifically web3 connectivity, generate NFT using Solidity/Python, create smart contracts on Binance Smart Chain and Ethereum, deploy to Opensea and integrate them to our website for minting and displaying of the NFT on our site. If you are interested, please message me to discuss your qualifications and price for this project.

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