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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    57 份搜到的工作,货币单位为 USD

    Necesito un bot de sniper para pancakeswap, tengo el codigo fuente pero como no soy programador no logro avanzar, necesito completar el bot

    $179 (Avg Bid)
    $179 平均报价
    19 个竞标
    Platform to customize NFTs 6 天 left
    已验证

    I want to be able to modify existing NFT collection by petition of the owners of that collections.

    $515 (Avg Bid)
    $515 平均报价
    53 个竞标

    lets talk in private for all the details.

    $135 (Avg Bid)
    $135 平均报价
    21 个竞标

    Need a very detailed white paper for Crypto coin and blockchain project with some pic's graphics etc

    $166 (Avg Bid)
    $166 平均报价
    9 个竞标

    I'm interested in discussing my business plan which includes a complete 1inch copy (with integrated self-custody wallet). I'd also like to include perpetuals / futures (similar to dydx) either now or in the future.

    $2638 (Avg Bid)
    $2638 平均报价
    29 个竞标

    We are looking for a ERC721 Developer for our new Startup. We are looking for someone who is able to setup a whole NFT launch and Minting process.

    $2363 (Avg Bid)
    $2363 平均报价
    56 个竞标

    Looking for a beacon chain project like Please contact me if anyone interested.

    $1863 (Avg Bid)
    $1863 平均报价
    27 个竞标

    Hireing blockchain, frontend, backend developers who can relocate to philiphins Free board and lodging, free meals

    $760 (Avg Bid)
    $760 平均报价
    38 个竞标

    We’re looking for a social media community manager for our NFT web 3.0 metaverse project. That person should have extensive experience with how to market our NFT project through Twitter and get potential clients into our discord group.

    $38 / hr (Avg Bid)
    $38 / hr 平均报价
    26 个竞标
    Blockchain and NFT site 5 天 left
    已验证

    I’m looking to develop a private c# blockchain with a react frontend that will allow users to login, and mint NFTs on the chain, transfer ownership of NFTs on the chain to other users and query ownership of NFT’s on the chain.

    $1825 (Avg Bid)
    $1825 平均报价
    42 个竞标

    Hey guys, I want you to build an ethereum type blockchain - private chain for me based on proof of work. There should be 3 running nodes all running. I must be able to connect to my chain from windows pc and launch smart contracts.

    $2520 (Avg Bid)
    $2520 平均报价
    101 个竞标

    1: Build a parcel place with 44,000 spots 52x52 squares 2: as you walk over the squares the parcel will light up 3: add a mini map that shows the coords for the work. 4: Make charters able to see each other online 5: Import building ability through 3rd party software after purchase of land 5: Bonus for adding voice 6: Bonus for adding building in the middle that is not buyable Build a parcel place with 44,000 spots On a flat board with a mini map and a person able to run around it and see each square for sale. The map can be blank like a net and the people that run around can be imported from ready player me And the land connects to Metamask and takes BNB and ETH. Must be able to see each other online. If you can do this we will spend a lot more on the actual building out ...

    $250 - $750
    加封
    $250 - $750
    27 个竞标

    Build me an Simple Crypto Trading app/website I already have an existence website and app sources which I need to rebrand and rebuilt... contact me so I can share my requirement in detail

    $2011 (Avg Bid)
    $2011 平均报价
    19 个竞标
    ERC721 Protokoll 5 天 left
    已验证

    We are looking for a ERC721 Developer for our new Startup. We are looking for someone who is able to setup a whole NFT launch and Minting process.

    $2467 (Avg Bid)
    $2467 平均报价
    95 个竞标

    You have to create a sandwich/mev bot which works on ethereum and bsc. You must have prior knowledge of how it works and you must have created that in past.

    $466 (Avg Bid)
    $466 平均报价
    7 个竞标

    You need to create a smart contract which do buy and sell in same block using sandwich trading. You must have done that successfully in past.

    $356 (Avg Bid)
    $356 平均报价
    11 个竞标

    I want you to develop a Nodejs script to detect newly deployed tokens on Ethereum and Binance and store the following properties on a MongoDB. ? ETHER: 0x39834c54d329567363D5D474fF8C97c21e2a351d ? Liquid: 37% in Uniswap. ? Holders: 64 3.0% | 2.8% | 2.4% | 2.0% | 2.0% | 1.9% | ? MCap: $ 8,775 (WETH: $1186.61) ? Liquidity: 2.72 WETH ? LP Lock: 99.00% locked for 27 days on Unicrypt ? Fee: Buy: 4.00% | Sell: 4.00% ? Max Buy: 176370.182711258(0.15 WETH) Above is an example.

    $287 (Avg Bid)
    $287 平均报价
    65 个竞标

    Please read carefully before contacting us. We are Building a Blockchain ecosystem on Hyperleger Besu and our environment is AWS and Kubernetes. We need someone expert in Kubernetes and use to work with AWS on hight level. experience more than 6 years and knows about Blockchain + Hyperleger More details: issue-1 Developement Kubernetes Clusters nodes are automatically getting crashed and restarting. hence all the pods in all the namespaces are restarted. alot of them do not pvc attached to them issue-2 due to not being attached PVCs, some pods are losing their data. including the blockchain besu nodes hence whenever they are restarted we are losing blockchain data. NOTE: the expert on DevOps should find a solution of these two issues.

    $31 / hr (Avg Bid)
    $31 / hr 平均报价
    24 个竞标

    Hello, We are looking for Companies tieups for web Development and blockchain projects. We wont pay advance. But Work on post paid milestones only. You can work on your local server and once approved and tested by us, we release payment on freelancer. Pls. we want hardworking companies and freelancer only. We require delivery of work on time and with accuracy Thanks

    $124 (Avg Bid)
    $124 平均报价
    12 个竞标
    IOTA SMART CONTRACT PROJECT 5 天 left
    已验证

    WE WANT TO DEVELOP OUR TOKEN WITH IOTA BLOCKCHAIN , WE NEED TO HAVE SMART CONTRACT WE NEED LINK TO OUR WEBSITE WALLET HAVE TO WORK WITH DEVINET

    $1705 (Avg Bid)
    $1705 平均报价
    10 个竞标

    Need smart contract developer BSc for presale contraction n testing. Developer from India only

    $8 / hr (Avg Bid)
    $8 / hr 平均报价
    10 个竞标
    Ethereum node sync issues 4 天 left
    已验证

    Ethereum full node syncing slowly and litenode doesnt get synced. Need someone who can fix the issue quickly. Should have hands on experience on Geth Nodes and handlh Beacon ETH chain.

    $11 / hr (Avg Bid)
    $11 / hr 平均报价
    9 个竞标

    Need a smart contract developer for smart contraction interaction ico contract with the front end. need from India only.

    $5 / hr (Avg Bid)
    $5 / hr 平均报价
    12 个竞标
    DApp Development 4 天 left
    已验证

    We are looking for an Experienced Blockchain Developers to Build us a DApp like this: This DApp has too many features. We only want the Following features. Convert, Pools, Lottery, Play and Poker. Please visit the Website ( ) so you have an idea exactly what we are looking for. Send your interest if you are Experienced, Have substantial reviews and also have worked on something similar with reference links.

    $8764 (Avg Bid)
    $8764 平均报价
    42 个竞标

    Hi guys Looking for a web3 blockchain developer that can create and deploy private blockchain and dapps project. PLEASE NOTE THIS IS NOT DEVELOPMENT OF CRYPTOCURRENCY. Only bid if you have done web3 private blockchain before. Example project: NO AGENCY NO COMPANY SCAMMERS PLEASE STAY AWAY YOUR TICKS WONT WORK ON ME

    $151 (Avg Bid)
    $151 平均报价
    32 个竞标

    Will discuss upon discussion, WP is ready and need to start the project ASAP.

    $4619 (Avg Bid)
    $4619 平均报价
    21 个竞标

    Szukamy osób do zespołu programistów na stałe zlecenie ok 12 miesięcy, na czas budowy platformy crowdfundingowej. Osoby które zgrają się z zespołem i będą lojalne wobec firmy otrzymają propozycję stałej pracy na obopólnie ustalonych dogodnych warunkach. Osoby posiadające doświadczenie z zakresu: - AI - Blockchain - Front End Dev - Back End Dev - UI/UX/Projektowanie graficzne - Budowa kompleksowa platform społecznościowych - Zarządzanie zespołem developerskim - iOS/ Android Apps Budujemy obecnie zespół, prowadzimy rozmowy indywidualne. Szukamy osób które zaangażują się w projekt platformy od a-z i będą jej częścią. Po zrealizowaniu platformy dla osób chcących zostać w zespole na stałe przewidujemy częściowe udziały. Wynagrodzenia za...

    $21 / hr (Avg Bid)
    $21 / hr 平均报价
    9 个竞标
    Dynamic Flashloans Execution 3 天 left
    已验证

    * First Milestone Given an atomic transaction ID, we need an API call that returns whether it is profitable to copy/imitate that transaction in the current time. is one example of these transactions. The guy who did this transaction started with 0.027497 BNB, swapped them to Kinka token via Pancakeswap, then sold them on Apeswap and ended up with 0.029699 BNB. The profit from this transaction is around 0.002 BNB. We will be probing transactions on BSC to avoid high gas fees. I will ask you to deploy this API somewhere to be able to call it without knowing the code yet. You'll give us at least two days where we will test your API against multiple transactions. If the similar transaction deems to be not profitable your code will test with a smaller amount and return the profitable ...

    $512 (Avg Bid)
    $512 平均报价
    17 个竞标
    Tableau/PowerBI + Blockchain 3 天 left
    已验证

    Hi, I am looking for developer with experience of Tableau or PowerBI implementation. Xero, Blockchain experience would be a plus. More details through chat.

    $492 (Avg Bid)
    $492 平均报价
    20 个竞标
    Trading/Frontrunning Bot -- 2 2 天 left
    已验证

    I recently had a Metamask trading bot coded that has been found to be malicious. The bot would accept deposits, function properly, but not withdraw. I've already lost quite a bit to this scam. This story only gets worse so I'll keep those details to myself but if you're interested, I will share. This project has a very short timeframe because just because we were scammed doesn't mean creditors understand the situation. My family and I need someone to be our white knight or white hat hero - whatever you want to call it. I am looking for someone who can make, from scratch, a front running, arbitrage, or other passive income bot that can help us while I recover, find a new job, and try to recover our stolen savings. The key part is that I want you to create for me wha...

    $750 - $3000
    加封
    $750 - $3000
    6 个竞标
    Tableau or PowerBI 2 天 left
    已验证

    Hi, I am looking for developer with experience of Tableau or PowerBI implementation. Xero, Blockchain experience would be a plus. More details through chat.

    $481 (Avg Bid)
    $481 平均报价
    31 个竞标

    You must be an expert with , Typescript and blockchain. If not, don't bid. Create a simple landing page using NextJs, Typescript, Tailwindcss and Web3. The figma link is as follows: The goal is To: Connect your wallet to either Metamask, Coinbase or Trustwallet and show the connected address Replicate the UI as seen on figma, and make it responsive Use the stack mentioned above Host on any hosting platform and reply with the url… vercel is recommended This must be finished in 36 hours from now. This figma file is only 7% of the whole project. What are we looking out for: Clean typed code Good folder structure Attention to details Speed We will check your code in detail

    $410 (Avg Bid)
    $410 平均报价
    28 个竞标

    We are looking for a developer to create a Smart Staking Token based on TRC-20. The developer should be familiar with TRC-20, Tokennomics, and Web Wallet Integration to create a functional and economically sound token. The token's total supply will be 54cr, divided among public offerings, dividends, referral awards, management funds, airdrops, etc. This will be hard-coded into the decentralized smart contract. There is a lot more which is impossible to discuss in this job post. The developer should have a good understanding of the cryptocurrency landscape and be able to provide insights into the token design. The candidate should also be familiar with cryptocurrency exchanges/ The successful applicant will work closely with our team to develop a professional website and whitepaper...

    $436 (Avg Bid)
    $436 平均报价
    20 个竞标

    need a content writer having experience in ICO content writing and can provide a good articles with perfect flow of writing.

    $19 (Avg Bid)
    $19 平均报价
    15 个竞标

    Blockchain Website & App Expert require for Payment Exchange and own Payment Gateway - Platform Require Like Stripe and PayPal + with multiple options for Accepting payments and Sending payouts globally. Website & App Design Responsive Website & App Development (Flutter or React Native) Modern Design, Extra Smooth Transitions & 3d Look Money Exchange. Wallet - Account, Transactions, Card, etc. Payment Gateway. (API, SDK & Plugins) Panels/Dashboard Full Website & App Control - Admin Panel & Staff Panel Website, App, Admin & APIs, SDK, Plugins Complete Documentation and 6 month complete Support -- Users can credit payments to their website account (from any source) -- Users can withdraw payments to any required accounts (banks, cards...

    $2161 (Avg Bid)
    加精 保密协议
    $2161 平均报价
    15 个竞标

    Please take a look at the demo on the following page: Connecting a phantom wallet (with some test USDC on Devnet), selecting 1 Box, and clicking on "Checkout" will redirect to the following url: If I decide to append some variables and load up the following url instead: I'd like to be able to grab the url variables and to make them available for use within the file. Then, I'd like you to simply encode/encrypt the "box-of-cookies=1&basket-of-cookies=0&city=Paris&country=France" string so that the url could be loaded as follows: or as and then the encrypted variables should be decoded/decrypted and made available for use within So I would have the option to load either the standard url or encoded/encrypted url and in both cases the...

    $48 (Avg Bid)
    $48 平均报价
    11 个竞标

    I need help making an crypto currency coin, I will pay extra if you help with marketing as well.

    $670 (Avg Bid)
    $670 平均报价
    40 个竞标
    Blockchain script 2 天 left
    已验证

    Im looking for a developer that can build me script.

    $187 (Avg Bid)
    $187 平均报价
    61 个竞标
    Crypto mining app -- 2 1 天 left
    已验证

    I need a crypto mining app like pi Needs to mine my tokens and then redeem them from my site. Must play ads. Allow people to invite people Have push notifications track invites Have a 24 hour timer to have to mine again. Have back end so I can see database of subscribers.

    $30 - $250
    加封
    $30 - $250
    21 个竞标
    Build me Arbitrage Crypto Bot 1 天 left
    已验证

    Hi I am a Crypto trader. I am looking for someone to build me an Arbritage Crypto Bot. I would not be paying for any anything outside of Freelancer all payments will go through here. If you can help please kindly let me know.

    $1569 (Avg Bid)
    $1569 平均报价
    79 个竞标

    We want to see what options are available for transferring our coffee loyalty program currently used at our cafe using physical cards, to a blockchain system. We understand that this may not be the typical use of the blockchain but we intend to start small and build upon it later.

    $973 (Avg Bid)
    保密协议
    $973 平均报价
    50 个竞标

    We want to see what options are available for transferring our coffee loyalty program currently used at our cafe using physical cards, to a blockchain system. We understand that this may not be the typical use of the blockchain but we intend to start small and build upon it later.

    $848 (Avg Bid)
    $848 平均报价
    84 个竞标

    Need Fractional NFT market place based on ERC 1155 - NFT minting function (owner only) - Each NFT can connect to uniswap pool - User dashboard

    $687 (Avg Bid)
    $687 平均报价
    32 个竞标

    we need a simple Fractional NFT project based on 1155 erc - NFT minting - Each NFT can connect to uniswap pool - user dashboard

    $663 (Avg Bid)
    $663 平均报价
    31 个竞标

    Must have: Swift Xcdoe coding capability Blockchain/web3/walletconnect metamask integration knowledge App: We need to use an API/SDK like () and build a scanning mobile application. Also need NFT marketplace. User can capture image and make NFT. Need capable team with previous blockchain projects.

    $17260 (Avg Bid)
    $17260 平均报价
    44 个竞标
    Crypto casino 23 小时 left
    已验证

    Looking for a crypto casino that someone has already built. Must be online and able to play against each other for tokens and have at least one slot machine.

    $250 - $750
    加封
    $250 - $750
    55 个竞标
    Mini Games Platform 23 小时 left

    We are looking for a developer / a team of developer to develop a mini games platform. for both website and apps (android / iOS) Example : Web-based : Android Version : A platform where alot of people / user can submit their mini games, and user can play in several mode (duel, war, challenge, etc) and user can earn points / coins. We also would like to have a referral system in the platform.

    $4349 (Avg Bid)
    $4349 平均报价
    28 个竞标

    Make a blank flat land metaverse with parcels for sale, online, with a mini map and people running around it. People will be able to buy their parcels and upload what they want in their space. Get this done in and smart contracts. You must be able to import the metaverse property from some source. Build a parcel place with 44,000 spots On a flat board with a mini map and a person able to run around it and see each square for sale. The map can be blank like a net and the people that run around can be imported from ready player me And the land connects to Metamask and takes BNB and ETH. Must be able to see each other online. If you can do this we will spend a lot more on the actual building out of the system. If you cant do this simple task within 250 to 300 dollars dont apply. ...

    $250 - $750
    加封
    $250 - $750
    25 个竞标

    Looking for 1-2 Senior Solidity Developers, can be part-time (10-20 hrs a week) or full-time: Requirements: * Familiarity with Test-Driven Development. * Have experience developing well-designed REST APIs. * Understanding of Blockchain architectural design patterns as well as supporting infrastructure. * Expertise in providing end-to-end solutions (Life Cycle for infrastructure including SDLC). * Knowledge of ERC20, ERC721, and other protocols. * In-depth knowledge of blockchain logic. * Understanding of fundamental encryption mechanisms. * Experience in peer-to-peer networking. * Understanding of Smart Contracts and consensus techniques, as well as experience developing blockchain apps or proofs-of-concept (POCs) in Solidity on Ethereum. * Hands-on development expertise in the following ...

    $35 / hr (Avg Bid)
    $35 / hr 平均报价
    68 个竞标

    I'm attaching a text file of the complete requirements of the project. I need an api based solution so that I should be able to use the code only with the api keys of my Binance account.

    $919 - $1837
    加精 加封
    $919 - $1837
    16 个竞标

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