Blockchain Jobs

Blockchain is a distributed register that is used to maintain a continuously growing list of records, called blocks. It has revolutionary applications in finance (such as cryptocurrencies like Bitcoin) and decentralized applications like online voting.

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    97 jobs found, pricing in USD

    i want someone to build a 9gag style page that will allow people to connect with a web3 wallet and post memes, upvote,downvote,comment and share their post and few more things .

    $214 (Avg Bid)
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    27 bids
    Upload my NFT's on Opensea 6 days left
    VERIFIED

    I have approx 5000 NFT which has 8 original images and 4672 Other Images. also, I already created metadata and uploaded it on Pinata Cloud. so just want an experienced blockchain developer who can create a smart contract and upload it ETH blockchain. where 8 original images will be always on top

    $12 (Avg Bid)
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    4 bids

    I want to hire a developer who can retrieve offers from Opensea NFT collection

    $22 / hr (Avg Bid)
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    24 bids
    Write SOLIDITY smart contract 6 days left
    VERIFIED

    We want to copy existing project from github. Need to change few things from that contract.

    $84 (Avg Bid)
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    11 bids

    Our team based in US are gonna add two Golang developers for some big project. Payment is on Hourly rate and it is $30~$45. Please apply to this job if you are affordable this rate and it is one year contract. Please attach your Resume with your experiences in Golang. Thank you.

    $38 / hr (Avg Bid)
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    24 bids

    I wonder if you can develop a web platform with the following requirements: The website (platform) should be developed to AUTOMATICALLY RUN and sell the Proof of Priority registration services by making the registrations on blockchain. It will work as follows in the user's view: 1- The user makes the registration on the Site - click on the "Register" menu. 2- When accessing the platform (site) again, access through the login menu. 3- The user makes the purchase of credits via PayPal (or credit card) required for registration. 4- Then informs the data of the record holder, type of record, title and description. 5- The platform AUTOMATICALLY checks if the user has enough credits for the service. 6- Then it releases the user to continue the service request. 7- The user selects ...

    $912 (Avg Bid)
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    40 bids
    simple dApp for Algo? 6 days left
    VERIFIED

    We need to build a dApp that will let us (or an authorized user) select items to lock up for another person to be able to come claim. Should be able to select an available ASA token or ASA NFT and lock it for another user by either wallet address OR if a wallet holds a certain ASA (NFT) (assign X asa to X wallet address, OR assign X ASA to holder of X ASA) User that locks the items should be able to see when claimed and by what wallet, or be able to cancel at anytime (in case of error or limited time offer) it's should stay locked to claim until claimed or canceled by the person that locked it User would come to app, connect wallet and see if they are holding anything they would get a reward for, and if so, then they could claim it by signing contracts and having item opted in an...

    $328 (Avg Bid)
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    29 bids
    Roulette Game(Solidity SC) 6 days left
    VERIFIED

    Hello, We need a roulette game with excellent graphics, in solidity, with smart contract. Mobile based or responsive. Best Regard's VG

    $2242 (Avg Bid)
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    17 bids
    Crear token ERC-20 -- 2 6 days left
    VERIFIED

    Busco experto en blockchain que me ayude a crear smart contract y token ERC-20 en Etherum.

    $160 (Avg Bid)
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    54 bids

    We require a smart contract developer for a BEP-20 with integrations to service modules from ChainLink. The project is expected to last for 3-4 weeks. Flat-rate payment, future employment opportunities available.

    $41 / hr (Avg Bid)
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    26 bids

    There is a requirement for the rfollowing: #1 Create NFT + Gift Cards with Utility #2 Launch limited edition NFTs to drive Referrals through the provision of incentives Please provide the following info with your bid. - How you would implement the above - Timelines/milestones Further information can be provided as required

    $873 (Avg Bid)
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    34 bids

    I am looking for an experienced developer who can work on the Solidity, Blockchain, and another buy/sell features using the API. Implement Buy, Sell (redeem) functionality to Dapp crypto Implement Buy, Sell Crypto with Fiat Infura The Infura API suite provides instant access over HTTPS and WebSockets to the Ethereum network. IP Blocking Restricted

    $106 / hr (Avg Bid)
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    50 bids

    I need metamask connection with front end development and smart contract on it What i need After metamask connection was done User must have my nft then my page will be unlocked I attached the files you can see what steps i need to follow

    $63 (Avg Bid)
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    19 bids

    I would like to migrate an existing project from Terra to Solana to take advantage of the Solana's speed and low transaction fees. The current project on Terra is named Mirror Protocol and can be found at https://mirrorprotocol.app. The Solana version would ideally be extremely similar to the existing dApp. This will allow the reuse of code and documentation. However, the smart contacts will have to be implemented as programs on Solana. Fortunately, both blockchains use the rust language so that should make porting a bit easier. The Mirror Protocol project is opensource and code can be found on github ().

    $570 (Avg Bid)
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    40 bids

    I'm in need of a cryptocurrencies professional

    $513 (Avg Bid)
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    42 bids

    This project is based on Hyperledger fabric and NFT tokens . Check the below attached files for Abstract and detailed description .

    $100 (Avg Bid)
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    9 bids

    solidity ^0.8.11 ERC721EnumerableUpgradeable ECDSAUpgradeable EIP712Upgradeable AccessControlEnumerableUpgradeable ReentrancyGuardUpgradeable StringsUpgradeable MulticallUpgradeable IERC2981Upgradeable Please only apply if you know what the above words mean and you know how to work with them and you are available!

    $28 / hr (Avg Bid)
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    56 bids
    Develop NFT Generator Web App 4 days left
    VERIFIED

    Looking for someone to develop NFT Generator Web App where users can add layers and upload traits which will then generate NFT's with Metadata in JSON files. Must have a good understanding of NFT's, Crypto network such as ETH, SOL network.

    $945 (Avg Bid)
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    35 bids

    Need someone who can customize BSC GETH node for TX backrunning. Right now I am 1-20+ indexes behind target tx. Need 1-5 max. *possibly to buy also professional contract sniping bot, especially if coded on golang

    $190 (Avg Bid)
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    Hi there, I need help creating a token on ICP, AVAX or one of the other blockchains that would allow for data migration, security, etc with low gas fees. Use the website and let me know if you’d be able to use any of their products on one of the blockchains with low gas fees. Need to create a token for a company that helps with data migration, data reconciliation and mata masking.

    $167 (Avg Bid)
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    12 bids

    I have a task to manage security documents with blockchain sign technology from my boss. I need real experience with etherem and solana net developer with and solidity for a long time. Please show me your github projects to improve your skill. Prepend (I love blockchain) in headline of your bid. Thank you!

    $20 / hr (Avg Bid)
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    31 bids

    I am looking for wallet that stores private keys while interacting with multiple blockchains

    $968 (Avg Bid)
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    6 bids

    Build An Explorer for Cosmos based Project .

    $1231 (Avg Bid)
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    23 bids

    Need code on how to mine monero on AWS, something similar to this:

    $157 (Avg Bid)
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    7 bids

    I am looking for a blockchain developer who can build a platform where two parties can transact there funds which are on third party platform. Like a bridge. For example if a party wants to sell their coin on binance directly to a person in exchange of cash in his bank account than our platform should provide the interface to do this transaction by holding part “a” asset in contract and releasing it to party “b” on confirming the payment. Any interested developer please get back asap because there is a very big opportunity in this as Indian government has announced 1% tds on every transaction

    $528 (Avg Bid)
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    12 bids

    The pool already running and config as PROP Auto generator now: FPPS or PPS+ auto generator payments method configure and setup If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. **** No milestone **** Full Payment after checking project. ****Max budget : 60$**** Auto bot BID & Higher BID will be removed.

    $57 (Avg Bid)
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    6 bids
    Blockchain developer -- 2 4 days left
    VERIFIED

    Looking for blockchain developer for my NFT website

    $698 (Avg Bid)
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    50 bids
    ICO land page 4 days left
    VERIFIED

    Tokens project , need ICO with dashboard and wallet , smart contract and Tokens creation BEP20 full function Website should be laravel or WordPress

    $181 (Avg Bid)
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    33 bids

    We have an ongoing NFT project. We have all the assets and Metadata recorded, we want a custom function that takes the wallet address and the desired name from the user and mints them the NFT. In general terms the algorithm will be :- - Take the wallet address from the user. - Take the Desired Name from the user ( for eg - if the user enters the name Josephine , the NFT name must be Josephine ) - Mint the NFT in backend with the image uploaded in IPFS and metadata and the name from user and bind all them together - Send the NFT to the address of user. We want a fully developed smart contract to help us implement it on our website. Only Experienced person with knowledge of NFTs and Smart Contracts only Place Your Bids. You must give a detailed rough algorithm to us before we hire you

    $488 (Avg Bid)
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    Hello, We are looking for a blockchain developer to develop our smart contract and mining website. It will be necessary that for presales we can add a whitelist of wallets to access the mint. The project will be on the polygon blockchain. You will need demonstrable experience in this type of development so that we can verify.

    $1341 (Avg Bid)
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    85 bids
    Crypto gaming casinò 4 days left
    VERIFIED

    I am looking for a person interested in participating in the development of casino gaming for a crypto project.

    $1629 (Avg Bid)
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    65 bids
    Blockchain project 4 days left
    VERIFIED

    Need blockchain developer with experience of WordPress OR Laravel programming , to be part of team going to develop blockchain project , don't contact if you don’t have self confidence you can find programming solutions

    $1248 (Avg Bid)
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    111 bids

    all said and written above. i will give you the files you have to upload it and get me the ifps url

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    18 bids
    BNB Chain DEX 3 days left
    VERIFIED

    Looking for someone who bas developed a poocoin DEX on BNB Chain - Limit - Market Buy - Stop Loss - BSC - Trading View Charting Library UI Provided. Only bid if you have developed something similar to poocoin and share example URL in your bid. Bids without example of previous DEX with Charting will not be taken into account.

    $2199 (Avg Bid)
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    36 bids
    Consola.finance 3 days left

    We are a young, well-funded company backed by top VCs and business angles to build the leading end-to-end finance collaboration platform for web3 organizations. We are two highly motivated founders with a background in leading positions in Bitpanda, BCG, and Bearingpoint. Our mission is to enable web3 companies to focus on their core business and not worry about back-end finance processes. We have a strong background in leading web3 companies and are committed to contribute to one of the fastest growing industries. identified and is solving the main problems that Web3 organizations currently face.

    $19 / hr (Avg Bid)
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    13 bids
    Senior Software Architect 3 days left
    VERIFIED

    Technologies: Backend - Java, Backend - Golang Additional tech: At least 3 languages that they have done significant projects in, Java, GoLang, Typescript pref / Javascript, Blockchain experience (as an advantage), and UML experience (as an advantage) At least 10 years in software development About the project: The project focuses on Automating the essentials to give a foundation for your customized financial strategy. It then provides personalized insights that allow you to see the effects of your habits and decisions on your goals bringing the whole financial picture into perspective. Education is provided with life events and an understanding of the cost of decisions. Smpl provides a scenario builder to understand at a most basic level what financial terms mean and how financial produ...

    $36 / hr (Avg Bid)
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    21 bids

    I am looking for developer with more than 5 years of experience that can build a site in Node.Js, similar to It need to be able to trade coin in pancake swap " BEP-20 "blockchain. I need site to be able to accept coin and convert coin in many type of coin. The site need to be fully mobile responsive in Node.Js. It can do NFT and gaming launch pad blockchain. Launchpad able to raising funds for early-stage startup crypto projects from retail investors. It able to purchase our token via credit card, wire transfer, and wallet. I also need two Language for Thai/English

    $1879 (Avg Bid)
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    Hi, I would like to create an bot/app that can: - Scan/monitor crypto prices across DEXes (Pancakeswap, Uniswap, etc.) - Identify arbitrage opportunities between these DEXes and execute trade. - Execute trades using flash loans. There are likely many more details (security, accounting for gas fees, frontrunning avoidance, etc.) but this is the main idea. If such a project is feasible, would love to discuss it with you. Thank you, Amey

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    Dev. blockchain solidity -- 2 3 days left
    VERIFIED

    At the moment we are integrating smartcontract for a casino game and we need to find a way to make a count of wins and losses to make a distribution in the casino token We have already created the contract for the casino chips and the gameplay, but we need to be able to put the users in some way if what they have obtained is a loss in the game or a win and at the end of the day get the benefits of the casino We need to see the possibility of creating an operations book to be able to count the casino operations and thus see the amount of profit it has had. We need to see the possibility of creating an operations book in Factom to be able to count the casino operations and thus see the amount of profit it has had the Casino and count with the feeds that it can have the casino. So we need p...

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    Yearn vaults allow users to deposit an underlying ERC20 token, and receive yTokens at a fixed exchange rate. Some of the underlying tokens available to deposit can be readily purchased on exchanges, however several yearn vaults take Curve LP tokens as the underlying. A usable integration with Yearn will require the ability to deposit any underlying asset into these Yearn vaults. Hence, following the Set protocol architecture, we need to develop an adapter to deposit and withdraw liquidity from Curve. Here is the specification: @blockdev/BJVjtayP5 Reference of a Uniswap V2 adapter in Set protocol contract repo: If you are interested in my job, please bid with start "Set Protocol"

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    Need code on how to mine monero on AWS, something similar to this:

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    18 bids
    I need a coder 3 days left

    I need to integrate a live-auction type interface into a website. The website would be streaming whatever item is for sale, users would be able to bid on that item while it is displayed, for a set time limit (15, 30, 45, 60 seconds, so on). Would be able to allow time to be added as bids are added, or sudden death mode. The users would have already entered their payment methods and would be charged upon completion of the auction. Would like it to be as simple as possible, with the ability to add more streamers with their own selling profiles. Would need to create a database for users, as well. This would potentially be embedded into a squarespace website, but if an overhaul is necessary for this to work smoothly, I'm game. I would also be interested in developing this int...

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    Metaverse frame Sdk -- 3 3 days left
    VERIFIED

    Looking for someone that can add my 3d models into a metaverse sdk with chainlink.

    $30 - $250
    Sealed
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    9 bids
    Metaverse frame Sdk -- 2 3 days left
    VERIFIED

    Looking for someone that can add my 3d models into a metaverse sdk with chainlink.

    $30 - $250
    Sealed
    $30 - $250
    20 bids
    Metaverse frame Sdk 3 days left
    VERIFIED

    Looking for someone that can add my 3d models into a metaverse sdk with chainlink.

    $30 - $250
    Sealed
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    17 bids

    I'm looking for a blockchain developer that knows react to build an analytics platform that scans the blockchain where we could figure out how many wallets are long term holders vs short term holders of a token. This would first be done to build an analytics platform on top of BNB chain. I am in the process of building out a team of really talented people to build out a new crypto currency called Oaysus. One of the spots I am looking to fill is for an Blockchain Developer. I'm from the United States working with a mathematician from the UK and a designer from Ukraine. Users in our analytics platform will be able to connect their wallets, share their analytics insights / knowledge, sync their youtube channels and twitter feeds and earn subs paid for in our token. The twitch of cr...

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    Need a nft site made with functions like - weekly draws for cash prizes - other utilities - payment of the nft in fractions - each owner gets a private log in to the website Reference project provided when intro is Done. For easier understanding

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    run to earn, like STEPN, people need to mint nFt to get access to the smart watch needed. With a native token, i would like to build it on Cosmos but with bridge to ETH and BSC

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    Read entire posting and see reference website and functionality before sending actual Quote please. I am seeking help with a project to create a website like Only fans dot com. Details how only fans works and functions can be found by Google searching Onlyfans. Send actual quotes, not teaser quotes thank you. - customer Pays subscription to follow (every fan who wants to see content of the individual (creator) have to pay first) - Let users (creators) choose their own monthly amount that fans have to pay. - Payout options for the (creator). - Admin fees settings. (For example admin can set this to 20% so of every (creator) that gets a new fan 20% of (creators set subscription amount) will go to the admin.) -the only payment option will be crypto, I own a domain where I want to hos...

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    blockchain project 3 days left
    VERIFIED

    I need help with work based on blockchain. If anyone interested the message me.

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