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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    42 搜到的工作,价格货币为 USD

    **We have been let down previously and have lost x3 weeks - PLEASE DO NOT APPLY IF YOU ARE NOT AN EXPERIENCED BLOCKCHAIN ARCHITECT WITH SECURITY EXPERIENCE** **Please provide examples of your experience in this field before applying** I have a requirement for an experienced Blochchain architect to review the concept and : 1. Advise on Go/No-Go decision 2. Provide feedback/improvements 2. Clari...

    $168 (Avg Bid)
    $168 平均报价
    1 个竞标

    Small compliance firm looking to build a secure database on the blockchain for our clients sensitive data. They will not interact with the portal. Will be internal only. Mostly simple features. Nothing crazy. It should store customer cards created by the user, generate reports and be user friendly. Open to suggestions, doesn’t necessarily have to be blockchain based.

    $8 / hr (Avg Bid)
    $8 / hr 平均报价
    5 个竞标

    i need the develop of a block chain and a smart contract with only 1 information to store inside

    $161 (Avg Bid)
    $161 平均报价
    7 个竞标

    Hi to all , I need the develop of a private blockchain on a google instance ( hyperledger or substrate are preferite ) . The data to stored on the block chain is a sequence of numbers that is the Unic ID of a nfc tag , the smart contract rappresent the certification of the NFC Tag and should be readable only from the Ip of our website through a dedicated dynamic web page.

    $833 (Avg Bid)
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    3 个竞标

    We want API and Endpoint Server for Ethereum and ERC20 token. Call Functions we need :- 1. getToken 2. getEthereumBalance 3. getTokenBalance 4. getTransactionInfo 5. newAddress 6. sendEthereum 7. sendToken These are the call functions we need, and for these all to work, we need a API key and Endpoint server hosted on AWS, call limits should be 100 calls per second. A full ethereum node through ...

    $544 (Avg Bid)
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    4 个竞标
    blockchain developer 6 天 left
    已验证

    looking for experienced blockchain developer to work on ibm hyperledger for three to six months.

    $943 (Avg Bid)
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    7 个竞标

    i have a task to complete for a client, i need some one who has expirence in cryptocurrency, please contact me

    $51 (Avg Bid)
    $51 平均报价
    6 个竞标

    Hello to all lancers bidding, We would be very interested in leads for the online casino and online sport betting industry. If you have: > databases with leads of prospects > active bettors and/or gamblers Then contact us. P.s. WE ARE NOT INTERESTED IN SEO, TRAFFIC, OR SOCIAL MEDIA CAMPAIGNS.

    $133 (Avg Bid)
    $133 平均报价
    9 个竞标

    I am looking for a developer to build me a crypto mixing site. Will share more details with selected developers.

    $671 (Avg Bid)
    $671 平均报价
    33 个竞标

    Hi i want some one to create me custom php website it should be like this website : [登录来查看链接] , it uses custom php and Nginx if you can do it then bid on this lowest price 1st

    $209 (Avg Bid)
    $209 平均报价
    16 个竞标
    Hyperledger Specialist 5 天 left
    已验证

    A specialist is needed to work in the following areas related to Hyperledger - 1. MSPs, OUs, Orgs, Peers, Anchor Peers, Orderers 2. How new MSPs can join the network 3. Kafka, Solo, Raft 4. KYFN, EYFN 5. peer channels, configtxgen, cryptogen, configtxlator 6. adding peers, deploying simple chaincode (init, invoke) 7. Ubuntu 18.04, EC2. ssh, AWS 8. Hyperledger 1.4 OSS (Apache) The task is to setu...

    $23 / hr (Avg Bid)
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    11 个竞标

    We are building the app for Cryptocurrency and other digital assets. We have a world-class team of data scientists, mathematicians, and quants aiming to bring crypto to the masses by demystifying the underlying data supporting the market. We are looking for full-stack devs who appreciate a challenge. Please, only experienced candidates apply as we are in search of the best

    $21 / hr (Avg Bid)
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    7 个竞标

    I'm looking for a team for a new ico real estate (blockchain development, marketing manager, website manager, advisor)

    $2927 (Avg Bid)
    $2927 平均报价
    27 个竞标
    medical-Blockchain- 4 天 left
    已验证

    I looking for someone that can block chain expert. He should know Blockchain well(IBM). I will discuss via chatting more detail. thank reguard....

    $590 (Avg Bid)
    $590 平均报价
    13 个竞标
    medical-Blockchain 4 天 left
    已验证

    I looking for someone that can block chain expert. He should know Blockchain well(IBM). I will discuss via chatting more detail. thank reguard....

    $69 (Avg Bid)
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    12 个竞标

    Im Srivardhan Reddy from india. I heard a lot about the technology called blockchain and i need a blockchain specialist to teach me.

    $8 / hr (Avg Bid)
    $8 / hr 平均报价
    3 个竞标

    I looking for someone that can block chain expert. Bid only expert. I will share the details with the short listed candidates. thank reguard....

    $414 (Avg Bid)
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    9 个竞标

    Hello - We need someone to compile our whitepaper. We have the general skeleton and key points and need someone to put it together in a polished manner. We just need you to create a word document because we already have the graphics and whitepaper template created. Please message with any questions or clarification needed.

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    We need someone to design a clean and modern site UI. Freelancers with relevant experience are preferred. The project is related to the gaming sector but the site should maintain a professional and business style. The site should use WordPress. We will provide some initial designs but the freelancer should improve their design based on his/her skills and our recommendations from other website...

    $210 (Avg Bid)
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    33 个竞标

    We're an innovative blockchain company looking for a Lead Developer with Project/Product Management experience to lead our development team, and interact between the Business/Marketing Division and the dev team. We have an existing beta version of our product. We need starting a further development. A product is a Google Chrome Extension, so you must have extensive experience in JS/NodeJS de...

    $41 / hr (Avg Bid)
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    20 个竞标

    We need a Golang/blockchain developer who has extensively worked on fintech projects . Experience working with micro services, Experience working with databases . Send me your work recent project's done in Golang only .

    $2078 (Avg Bid)
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    11 个竞标

    I looking for someone that can block chain expert. Bid only expert.(except new freelancer)

    $179 (Avg Bid)
    $179 平均报价
    6 个竞标

    I looking for someone that can block chain expert. Bid only expert.(except new freelancer)

    $549 (Avg Bid)
    $549 平均报价
    11 个竞标

    HI, freelancers. I am looking for an blockchain developer Project Scope: 1. Configuration Private Network based PoA on AWS 2. fixing a bug here is link [登录来查看链接] Thanks.

    $21 / hr (Avg Bid)
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    13 个竞标

    HI, freelancers. I am looking for an blockchain developer Project Scope: 1. Configuration Private Network based PoA on AWS 2. fixing a bug here is link [登录来查看链接] Thanks.

    $21 / hr (Avg Bid)
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    I need a a block chain development professional of about 3 years experience. Please send your resume (Removed by Freelancer.com Admin) Note- minimum 2-3 years of experience.

    $19 / hr (Avg Bid)
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    6 个竞标

    There is a set of testers of the new cryptocurrency cashbаck service We are recruiting people who should try out our new service, Cryptokeshbek. All beta test participants will receive $ 500 in Bitcоins for the test. If you have accounts on Blockchain, Binance, EXMO, Huobi, Coinbase. We invite you to cooperate. Our main tasks are to check the stability of the service, and if possible identify bu...

    $500 (Avg Bid)
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    5 个竞标
    Online 3D Game on Blockchain 2 天 left
    已验证

    I am looking for someone who has experience with online 3D games or 3D worlds and ideally also with the Ethereum blockchain.

    $7971 (Avg Bid)
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    54 个竞标

    Describe the steps needed to build a Blockchain voting system.

    $13 / hr (Avg Bid)
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    13 个竞标

    we required BTC seller for project who have experience in this and can easily manage everything.

    $50 / hr (Avg Bid)
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    3 个竞标

    A set of new beta testers comes to a new cryptocurrency exchange, everyone can participate in the absolute, even without experience. All beta participants will receive $ 500 in their balance for trading bitcoins. For each error we find, we pay 500 dollars.

    $262 (Avg Bid)
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    7 个竞标

    We need to test the operation of the ERC20 (CRYPTOCASHBACK) CSSBACK token. We invite specialists on working with smart contracts on the ethereum and blockchain networks. 1. It is necessary to conduct an audit. 2. Check the network stability. (make several transactions with our tokens within the ERC20 network. 3. Identify network vulnerabilities, if any. For more information send your applications ...

    $554 (Avg Bid)
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    12 个竞标

    We are a building blockchain based applications for customers across different industries, we have already built in commercial and non profit applications. We want to build the following: We have an application to create with: - about 25 screens - responsive - backend functionality such as login, database inputs from users - blockchain registration of hashed data, we plan to use Ethereum. -...

    $15888 (Avg Bid)
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    84 个竞标

    I need you to write a research article on banking system,, online banks And compare it with blockchain

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    32 个竞标

    Hey! I am looking for someone who can teach blockchain app development. Mainly app development on ethereum platform & on hyperledger. You should be available 2-3 hours a day to teach.

    $33 / hr (Avg Bid)
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    3 个竞标

    i need to split my smart-contract (because it's too heavy for the gas limit), deploy in ropsten to test it, change the contract set in the interfaces that i have to test it, deploy it in main net and set the correct contract in the interfaces.

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    We are a software company that leverages the power of blockchain technology for supply chain traceability (so no crypto stuff). We want a very futuristic website that has more focus on the technology (we will build a different one for the companies who will use our software that is more simple). This will be our technical website where we also put our API documentation etc.; We are currently activ...

    $286 (Avg Bid)
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    9 项参赛作品

    I need someone who can install complete [登录来查看链接] on my AWS server. You must have to have past experience about installing exchange. Exchange Liquidity Referral Multi language HOT/Cold Wallet erc20

    $239 (Avg Bid)
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    12 个竞标

    Looking for long term developer team for the new project. 1. Liquidity 2. 5 crypto Market - BTC,ETH,LTC,USDS, XRP 3. 20 ERC20 coins to be listed 4. New dark and light UI design (binance basic) 5. Admin Panel must have the listing function and adding market pair function. 6. Referral function needs to add and there should be manage function like 30%,50%80% as per admin mind. My budget is 200$ now...

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    21 个竞标

    Before we move on please show me a demo of your work - centralized exchange platforms! We are looking perfect cryptocurrency exchange which you developed before so we can buy and launch by tomorrow!

    $847 (Avg Bid)
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    14 个竞标
    Blockchain Content Writer 14 小时 left
    已验证

    Must have Financial Domain Exp MUST HAVE WRITING EXP MUST HAVE TECHNICAL WRITING EXP MUST HAVE EXP WRITING ON BLOCKCHAIN, SECURITIZATION ETC TOPICS THIS IS LONG TERM ROLE PREFERRED FROM USA, CANADA OR INDIA

    $111 (Avg Bid)
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    11 个竞标
    Django Crypto wallet 5 小时 left
    已验证

    Hello, I am creating a wallet website who will help people to manage their crypto , the website is almost done but I need some help with the "admin"panel. People can create organisation with some department inside it , inside the organisation they can create admin department who will manage their wallet. And I have a few problem with it.

    $241 (Avg Bid)
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    25 个竞标

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