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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    265 jobs found, pricing in USD

    IT will be a blockchain game, built on the XRPL in order to take and process payments and information accross the land. We want it to be a social city, similar to cyberpunk in terms of looks. Sims sort of feel.

    $48 / hr (Avg Bid)
    Urgent
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    22 bids

    Seeking an experienced blockchain developer that can create an ERC721 Smart Contract and build a new website that interacts with the ERC721 Smart Contract. *** Note: Only apply for this job if you have experience creating ERC721 Smart Contracts. What we need created: 1. ERC-721 Smart Contract CREATED: According to standards which ensure that it can be read by NFT marketplaces, such as OpenSea. 2. WEBSITE CREATED FOR INTEGRATION OF ERC721 SMART CONTRACT TOKENS We need the following 5 pages created for the new website: 1. Token minting page: Here we upload details for minting non-fungible tokens of the ERC721 Smart Contract. We will be creating NFT Artworks. 2. Signup and Login page: Uses METAMASK and email 3. Account page: Displays details of users account 4. Main page: Displays a...

    $2188 (Avg Bid)
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    31 bids
    ETH and USDT API 6 days left

    I need an API to generate address and confirm payments for USDT and ETH just like blockchain API does. When a user get to the page, a unique address is generated (ERC20) and monitored for payments. A call back is sent and updated when payment is received into the given address. I need it simplified for php page.

    $672 (Avg Bid)
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    18 bids

    I would like a crypto token that can be used for in game liquidity, where players can send and receive each other tokens, also the ability to stake the tokens if required.

    $34 / hr (Avg Bid)
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    23 bids

    I had build successful, now i want rebuild it and explose, web wallet .....with me because maybe some error need fix. you must have experiencie about blockchain, . bird by my budget and note: show me which you had done to build.

    $605 (Avg Bid)
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    Hello, As part of a launch of a collection of NFT on the Ethereum blockchain, I am looking for a developer for the realization of the website (one page) as well as for the execution of the smart contract (mint on the site, reveal on opensea, etc...). If you are interested, it would be a pleasure to exchange with you and to show you the project in more details.

    $1715 (Avg Bid)
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    Hello, there. We are looking for a developer with blockchain/solidity experience for our long-term project who can help us to improve our project. The project has already started and we are looking to grow our team even more. IMPORTANT - Before you send your proposal you should have: At least 2 years of blockchain development experience in Solidity If you have such expertise, send your offer to us!

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    10 bids

    We're creating a 18+ adult artwork platform built around an ERC20 token. We're looking for someone who can do the following: ## Part 1: Token Launch on Ethereum 1) Review our current tokenomics plan and provide feedback; 2) Provide a good strategy on how to deploy those tokenomics (including: burn, how wallets are structured, smart contract functions that need to be available, upgradability, etc.) 3) Use OpenZepplin (or another standardized smart contract platform) and help us deploy the token to the blockchain. First on Rinkeby, and then on live. We already have a Smart Contract we drafted and deployed successfully, but it will need to be reviewed. 4) Making sure we are provided full ownership and there's no smart contract vulnerabilities. The developer should not maintain...

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    I’m looking for someone that can creat a simple website that is able to check the ownership of an NFT by the user. User would access the website, connect their wallet (multiple wallets supported please) and the website would then verify that they own a certain NFT. If verification is successful, they are sent to another page with a form. Looking for a begin-to-end solution. Simple but fully functional. I have no coding knowledge or experience, need something ready to be deployed as well as detailed instructions to do so. Including recommending a hosting service to put the website love and what features it needs to support so that the ownership checking system works. For an experimental personal project, please send proposals if you’re interested in helping out at a (very) a...

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    I need a BTCPay payment gateway for Bitcoin and crypto currencies integrated to my website. I already have a BTCPay Server, I just need the payment gateway integrated to my website. Thanks

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    - Deploy Sushi contracts for SWAP and FARM only. - Configure 5 to 7 farms. Details to come. - Integrate the SmartBCH network. - Support only one wallet: Metamask

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    6 bids

    I want to build a crypto currency platform, Wallets and all the technology needed to successfully deploy a crypto currency coin.

    $16130 (Avg Bid)
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    23 bids

    Hello, there. We are looking for a developer with blockchain/solidity experience for our long-term project who can help us to improve our staking platform. The project has already started and we are looking to grow our team even more. IMPORTANT - Before you send your proposal you should have: - At least 2 years of blockchain development experience - At least 1-year experience of staking development (optional) You MUST answer these questions when you are sending your offer: 1. Tell me more about your blockchain/solidity experience? 2. What staking development 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...

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    We are building a new smart contract wallet metamask, so looking for someone who can customize metamask extension app open source. It requires react, , smart contracts, solidity, and chrome extension

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    Hi, I am looking for someone that is familiar with luna token, terra stability coins and rust programming. I am getting points from cosmwasm docs 1.0 and 0.14 like wasmd and junod for testnet and more things. But i need help from expert on this tech area. I will be needing to hire someone for long term if he is good for this area. Monthly payment will be done or weekly. If you do good work, we will go for long term Thanks.

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    hey I'm vishnu looking for blockchain D-app developer for my team

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    3 bids

    i need a crypto exchange app for both android and ios

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    15 bids

    We are looking for the senior blockchain developer with 5+ years of experience. We are going to make the Liquidity Voting system. Only bid if you have experience in Voting dapp. You have to bid with examples that you are done before. It is an important part for our project and we want to work with a high skilled developer in a long term. If you can do it fast, the price might come up. Happy bid!

    $25 / hr (Avg Bid)
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    I need to create NFT marketplace. please read my pdf and tell me your budget and timeline. If you have experiences in this part, Please bid.

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    We need to start a Blockchain Game with NFTs Integrate with ImmutableX (IMX) Create custom ETH Contracts - Deliverables A simple POC of Game that later on can be improve and meet our specific requirements and integrations We're looking for long term developers

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    We have a DApp website Project, and today we present some problems with events subscriptions shows: RPC Error: Internal JSON-RPC error. {code: -32603, message: 'Internal JSON-RPC error.' Message: too many request.

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    A development that has experience in DEFI

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    Copy trader -- 2 6 days left
    VERIFIED

    I want a copy trade for the kucoin platform

    $590 (Avg Bid)
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    12 bids
    NFT Market Place 6 days left
    VERIFIED

    What I need is the following - Smart Contract to allow the following on the NFT Marketplace - I need a user to have the ability to connect their wallet via metamask using the Binance Smart Chain - I will need the contract to allow users who have NFTS to be able to sell them and set a auction price - I will need the users to be able to see all for sale NFT's - All payments will be done in BNB - I will need the contract to be able to let me the owner set the % of commision i get for someone buying or selling my nFT's on my marketplace - That is the core smart contract stuff that needs to happen In relation to the displaying of the details of the nFT it can be the same as to what I sent through, - So each nFT wil have metadata that is reated on-chain when they get Hatched or they ...

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    Blockchain developer required 6 days left
    VERIFIED

    we are looking for experienced blockchain developer for small task.. you must be experienced with the Ethereum, Smart Contract, Solidity, Celo Server, OpenZeplin, GSN and etc... If you are familiar with them, please contact me.

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    ESP: Necesitamos alguien que nos asesore para crear el código de nuestro ERC-20 token y nos ayude a desarrollar nuestros tokenomics. El trabajo consistiría en realizar el contrato en Solidity de un token ERC-20, que después será deployed con Remix IDE por nuestra parte, y asesorarnos resolviendo un par de cuestiones sobre la distribución y suministro de nuestros tokens (ayuda con los tokenomics). ------------ ENG: We need someone to advise us to create the code of our ERC-20 token and help us to develop our tokenomics. The work would consist in make the Contract for Solidity of an ERC-20 token, which will then be deployed with Remix IDE on our part, and advising us by solving a couple of questions about the distribution and supply of our tokens (help ...

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    NFT MARKETPLACE (BSC) 6 days left
    VERIFIED

    need a marketplace built into our website template. to see how a dapp appears in our current website design we should be the only ones allowed to upload, create, mint nfts there. but others can purchase our nfts and also resell them there. I want to be able to edit as much as possible html wise without having to recompile

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    This job consists of three parts: 1) A scrapping tool, 2) an analytics backend that processes the scrapped data and 3) a website that shows the analytics results and sample NFT images. DETAILS 1) A tool that tracks minting of Solana NFT collections LIVE. It will receive as input the minting authority from the collections we want to track LIVE while they are minting. As output, it will show statistics regarding the minting speed (More details when awarded). 2) Analytics: Statistics are calculated from minting data (NFT minted, wallets and minting times) scrapped live from Solana blockchain. These are simple formulas (+, -, *, /) and can be implemented on the same language of the website or python. 3) Website: Home: It will list of minting collections that the tool is tracking. It will...

    $3240 (Avg Bid)
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    5 bids
    Blockchain SAAS expert 6 days left
    VERIFIED

    I am looking for a Blockchain SAAS expert to help me create a yield farming app. Would be good to talk about my ideas and project after you apply. Experience in ICO'S and tokenomics would also be helpful. Thank you

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    Online platform has been developed in php. Need assistance to create crypto wallets for the platform users. Wallets needed; Bitcoin, Ethereum, USDC, BNB. Deposit and Withdraw function required. Features/APIs Required: 1. Create Bitcoin/Eth Addresses for new users 2. Monitor blockchain for new deposits. 3. Trigger withdrawals by user You can use Blockcypher or API's to do this.

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    12 bids

    Regarding the launch of a huge NFT project to transport 8000 Cro-magnon Man alive in the Metaverse, we are looking for our Developer to develop the smart contract. Composed of a team of entrepreneurs and NFT enthusiast we have build the few last month an ambitious project behind this collection and you can take part of this awesome adventure. We are looking for a blockchain developer who has React skills and is experience with Integrating smart contracts. Developer Requirements: At least 2 years of experience as a blockchain developer. Knowledge of blockchain protocols. Must have problem-solving skills. Skills and Expertise: Javascript React Node.js Typescript Web Application Web3 Smart Contract If you are interested in working on this project, please reach out to me. I'd prefera...

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    I have a new idea for developing a new Coin but I want to have the services from A to Z, full development, and the developer need to have full idea and experience of crypto, i will share the idea after negotiating an NDA,

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    How are you? We need a website for our NFT project and we need help making the NFT's on the Ethereum ( built with solidity) blockchain and then uploading the NFT's to open sea when it is all done. We can give you up to 8-10 weeks to make this for us.

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    Looking for a programmer to create a bot that will recieve telegram signals and then immeadiatly execute an intra-exchange on Kucoin. Below is a sample of the the telegram signal. Execution time is critical. The moment the signal sent the trade must execute. The bot will have to move funds to different coins For example if the signal says to BUY GXS/ETH SELL GXS/USDT And there is only BTC, then it will first have to buy ETH/BTC . And then execute the buy GXS/ETH And then execute SELL GXS/USDT Likewise at the end of the trade it should sell it back to the original coin. To get ready for the next round. Buy BTC/USDT There are many refinements that need to be Added to make this profitable but for now I just want a very basic functioning bot. If you can do this well We can s...

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    Smart contract crypto + Dapps 6 days left
    VERIFIED

    Hello everyone. I need a smart contract that follows a precise schedule for a crypto and a Dapps for the website that allows holders to claim their rewards. Professional work required, the contract will be audited before payment. Thanks everyone. Best regards.

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    Looking Any freelancer who have expirence in creating ERC20 or TRC20 tokens Whitepaper IEO ICO CMC Listing Marketing Teligram Bot Teligram chennal wrbsite promotion only expirence devloper only bid on project if you have ready to use any script you can use bid money cant be changed this is the final condition

    $182 (Avg Bid)
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    4 bids
    NFT minting website 6 days left
    VERIFIED

    I need you to make an NFT minting website using solana blockchain!

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    4 bids

    A good developer with good knowledge in Bot Development, Smart contracts, Nft Marketplace, Nft minting website, Nft game, and the app is needed. If you fit in one of these positions please bid with your area of specialization and portfolio and price

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    Looking for a developer that can create a custom contract for an NFT project that allows NFT holders to be validated against holding 2 or 3 and upon validation redeem / be airdroped a new one.

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    Hey freelancers, I need a swap & staking on my website just like

    $30 - $250
    Sealed
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    Whitepaper Expert Writer 5 days left
    VERIFIED

    Looking for Expert white paper writer You must have knowledge and understandings on DEfi DAP NFTS, Smart contracts etc Blockchain Crypto Currencies

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    We are looking for an artist who can produce 1000 specific design of our FASHION LADY SPACE. We are looking for key designer who can bring our designs to life. Based around the similarity to this project: with traits etc. """NO NEWBIES! ANY BIDDER WILL NEED TO DEMONSTRATE CAPABILITY BY PROVIDING EXAMPLES OF THEIR OWN SIMILAR WORK. BIDDERS WITH ZERO FEEDBACK WILL SIMPLY BE DELETED""" PROJECT DETAILS: No more than 999 will ever exist. MINDDS Shape #001 is the OG and the key that unlocks future utility. Shape #001 = 250/250 = 1/1 Edition ☑ Shape #002 = 350/350 = 10 x 35/35 Editions ☑ Shape #003 = 50/50 = 5 x 10/10 Editions ☑ Shape #004 = 8/25 = 1/1 Edition Shape #005 = 0/10 = 1/1 Edition Shape #006 = 0/5 = 1/1 Edition

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    We need a blockchain developer to develop a blockchain wallet for us. let me know if you can we can discuss more

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    We are a Startup company looking to create a sustainable long term P2E NFT Game. We already have almost a full team but we are still missing a crucial member of our team, we are missing an Expert in Crypto, someone that has experience with Tokenomics, Burning Mechanisms, Decentralization and in general the whole Economy behind it. We need someone to guide us into making this Token Sustainable We already have expert members in the Development, Marketing and NFT Games but we are missing that crucial Crypto expertise. We need someone to come to us with solutions. The Team is mainly based in Switzerland, we will have an office in Switzerland, this would be a Part Time Position fully remotely or on-site in Switzerland in case you are Swiss. Salary: Like the others every member will g...

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    We are startup company and got couple of questions on Blockchain and how we can get started to launch our project. This is going to be CALL based project , so the conversations will take place on google meet This is an hourly job and probably more collaboration in future. if you are expert in Blockchain , Smart Contarct and cryptocurreny please do apply. Your knowledge would need to be around : Blockchain person validation. Smart Contract detailing. denetralization. PLEASE ONLY APPLY IF YOU CAN SPEAK ENGLISH VERY WELL ON A CALL

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    Hello, In order to trade more efficiently, i need a GUI which is connected to my wallet and sells my holdings/tokens in different ways. There should be an autosell if price drops x% (f.e. 50%) from my entry price or if it rises 400% it should sell 1/3 of all ABC tokens.

    $411 (Avg Bid)
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    NFT CHARACTER BUILDING 5 days left
    VERIFIED

    BUILD NFT CHARACTER FOR GAME AND WEB DESIGN FOR PRESALE. KNOW HOW APPLY TRANSACTION OF NFT SALE TILL WALLET OF DEV (MINTING NFT WEB)

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    I am looking for a professional to develop and design the smart contract and the website for minting my randomly generated nft collection on Solana blockchain

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    Solidity Expert 5 days left
    VERIFIED

    I am looking for smart contract developer. you have to master solidity and contract.

    $531 (Avg Bid)
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