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. Hire Blockchain Developers

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    59 jobs found, pricing in USD

    I need an experienced Crypto Writer for a small website. We have the contents but we want to REDO it with new ideas and more professional content. It can be a long-term project for the right person.

    $23 / hr (Avg Bid)
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    3 bids

    Need a hyperledger block chain smart contract for mortgage loan closing process

    $145 (Avg Bid)
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    1 bids
    BitWallet Installation help 6 days left
    VERIFIED

    We need help with BitWallet Installation. nodejs,angular,karma,API to blockchain. Unfortunately the script provider won't help us with the installation. The demo version and free source code download can be found here: [login to view URL] The provided installation file is lack of explanations .... - Below is a description of what I have succeeded in describing how much work is needed What i...

    $740 (Avg Bid)
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    Looking for a dedicated blockchain developer with Full stack / MEAN developer background for building a decentralized exchange end to end.

    $4398 (Avg Bid)
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    7 bids

    Hi to all, I’m looking to find a blockchain deveoper that can create a private blockchain with new private cryptocoin, not fork or token Thanks

    $2697 (Avg Bid)
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    18 bids

    I want to deploy a Lotto/Jackpot Dapp on NoS/Neo in order to be eligble for their sale the dapp needs to be proof of concept and it dosen´t need to be high end. here is more information about NoS [login to view URL] Where you will develop the Dapp and then deploy it from my NoS Client so I can be eligble for their sale.

    $486 (Avg Bid)
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    3 bids

    I need a script to store a string on the blockchain and calculate the fees. it will be run on the testnet. I need it fast

    $265 (Avg Bid)
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    6 bids

    I have an ethereum token exchange website with a simplistic design. I need code tightened to make sure everything runs smoothly. I need it to run faster with the user interface similar to: [login to view URL]

    $613 (Avg Bid)
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    15 bids
    Develop Some Smart Contract 6 days left
    VERIFIED

    i m looking for a smart contract developer, i have a chain where need to implement some smart contract, c++ skills needed. apply if your are fast and expert developer.

    $573 (Avg Bid)
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    9 bids

    We have a new coin which have 25% syncing sporks problem and staking does not activate after block 300 we believe it might be due to Zero coin not correctly done I am looking for a freelancer to get it done

    $400 (Avg Bid)
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    2 bids

    We have an upcoming software development project and want expert who can work with us in this area. I suggest you check out the product, or ask any question to turing labs, or download the demo, before you over promise on tech, price, dateline. We will discuss in detail about project.

    $10 / hr (Avg Bid)
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    10 bids

    Need 2 smart contracts in solidity: 1. ico smart contract 2. erc20 token smart contract Both contracts must compile and need to be tested on test net. Parameters for contracts will be provided.

    $572 (Avg Bid)
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    15 bids

    Hey there, we are looking for a Talented crypto developer for a revolutionary cryptocurrency project. IMPORTANT: Please note the team will get paid with our company token. We are looking ONLY for more more developer to be part our team. Our team is international and it's a great opportunity to get involved in the development of something never made before! Is important to have a good knowle...

    $3332 (Avg Bid)
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    We are a team of three young developers working on a crypto listing/rating platform for dapps and icos and we are looking for help.

    $2556 (Avg Bid)
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    20 bids

    We are a team of three young developers working on a crypto listing/rating platform for dapps and icos and we are looking for help.

    $1103 (Avg Bid)
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    9 bids

    We need our own Cryptocurrency for our business. As such I need an EXPERIENCED person to clone the Ripple or other similar and suitable blockchain for us. The core requirements are as follows: • Fully Pre-Mined Coin with 50000 Million coins in single wallet. • We need fast transactions to make our project viable. confirm block in 2-4 second and support 3000 transaction in a minute. &...

    $669 (Avg Bid)
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    15 bids
    Building a PoC Dapp on NoS 5 days left
    VERIFIED

    I need to build a Proof of concept Dapp on NoS in order to be eligble for their sale Deadline is 30th July More information can be found here [login to view URL] Please read the post before contacting me you will have a better understanding of what to do. You can Develop the Dapp on your end but you will have to Deploy it from my end with my Public and Private key. Prior blockchain Dapp deve...

    $261 (Avg Bid)
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    7 bids

    I´m looking for someone who can build a PoC Dapp on NoS for me the Dapp can be anything really simple I´m hoping you as a freelancer would have some suggestions on what to build as it really dosen´t matter to me. Previous Blockchain experience / Dapp development is needed.

    $606 (Avg Bid)
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    I am currently developing an altcoin, and I want it to have multi-algorithm capabilities. There are coins in github that have that feature, but my altcoin uses a different bitcoin version codebase than those coins, so implementing that is harder. I also want you to explain to me what you did for my learning purposes and use a version control system such as Github. Finally, I want you to answer me ...

    $142 (Avg Bid)
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    Hi need to set up a smart contract in block chain, person who is available on urgent basis with reasonable prices will be given preference.

    $99 (Avg Bid)
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    7 bids

    Hey there, we are looking for a Talented crypto developer for a revolutionary cryptocurrency project. IMPORTANT: Please note the team will get paid with our company token. We are looking ONLY for more more developer to be part our team. Our team is international and it's a great opportunity to get involved in the development of something never made before! Is important to have a good knowle...

    $3007 (Avg Bid)
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    16 bids

    Hello, We have multiple ERC20 accounts and the accounts are with multiple private keys and they are individual. we need a central access to all the account so that all the funds deposited in different accounts need to be under the primary account. Here is the working scenario,  We have a shopping portal,  each assigns each user different address to each user and user purchase the ...

    $11 - $18 / hr
    $11 - $18 / hr
    0 bids

    We will give the skeleton of the paper and the market research. We just need the copywriting.

    $959 (Avg Bid)
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    44 bids

    Need a detailed explanation of Timejacking attack ([login to view URL]) with pictures.

    $43 (Avg Bid)
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    11 bids
    Timejacking Simulation 4 days left
    VERIFIED

    I need a simulation of the Timejacking attack on blockchain. [login to view URL]

    $13 - $26
    $13 - $26
    0 bids

    We need someone who is well experienced in creating a smart contract for token burning. You should have had previous experience doing this. if found worthy, you will be hired here Asap.

    $24 / hr (Avg Bid)
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    16 bids

    we want to build Digital Identity on Blockchain. which will help users to authenticate them through different consortium. without sharing their PII information

    $166 (Avg Bid)
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    we want to build Digital Identity on Blockchain. which will help users to authenticate them through different consortium. without sharing their PII information

    $147 (Avg Bid)
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    7 bids

    I'm looking to create my own masternode coin project and currently looking for developer(s) to fork/build a masternode coin

    $3044 (Avg Bid)
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    25 bids

    I wanna develop a new coin on a new blockchain

    $1895 (Avg Bid)
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    17 bids
    Write a whitepaper 3 days left
    VERIFIED

    I am looking for someone with extensive writing capabilities and expertise to write for a sophisticated level of audience. In addition, the applicant needs to be familiar with blockchain technology to convert our dense notes and existing technical content into a well-polished whitepaper.

    $198 (Avg Bid)
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    51 bids

    An industry giant is becoming the majority stakeholder in an innovative project in the blockchain sector. We are looking for an Operations Director for that innovative project . The Operations Director will be UK based, and will able to work remotely online and interact with members of the Team The Operations Director will also be required to run workshops for senior level decision makers ...

    $56 / hr (Avg Bid)
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    We're offering ongoing, hourly work to a C++ dev for a PIVX fork blockchain. If you're familiar with masternodes and PoS blockchains, tell us about your experience. Also, what is your availability regarding number of hours you can work?

    $40 / hr (Avg Bid)
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    25 bids

    I need an Android app. I would like it designed and built. I need an exchange wallet app for my Starr coin Its is a new coin on a new block chain

    $730 (Avg Bid)
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    10 bids

    I need an Android app. I would like it designed and built. I need a cryptocurrency wallet app for my cryptocurrency

    $1402 (Avg Bid)
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    5 bids
    ATM Pitch Deck 3 days left
    VERIFIED

    Pitch Deck + Landing Page

    $1025 (Avg Bid)
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    25 bids

    im wanting a qoutee for somebody to enter crypto currency payments and wallets into my site

    $921 (Avg Bid)
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    23 bids

    I need to IMPLEMENT the core technologies comprising one or several of these areas: - Distributed databases - Cloud computing-related - Distributed systems - Consensus (Paxos, state replication...) - Fault tolerance in distributed systems - Cloud systems networking - Blockchain Languages: primarily Go. Not mandatory.

    $36 / hr (Avg Bid)
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    Details of work: ▽ Purpose and overview of system development request I'd like to create tokens based on Ethernet, We are looking for developer who can create Smart Contract using Solidity. We will contact you for the content of the Smart Contract you want to create. (The content that you would like to request is not a complicated content. I'd like to include a safe source code using a ...

    $1363 (Avg Bid)
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    Looking for Bitgo Wallet Expert for long term position

    $3099 (Avg Bid)
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    27 bids

    looking for someone to code to find bittorrent tracker is working or not. in php or node js

    $133 (Avg Bid)
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    7 bids

    I want to learn to write tests in javascript. I have very little time to finish a project and need some assistance

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    I have some smart contracts that I can run on the truffle console. I need them integrated into a basic react app and some truffle javascript tests. Should be a couple of hours of work for an experienced developer.

    $169 (Avg Bid)
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    Hello! I would like a READY MADE Bitcoin Lottery Script. It needs to be already developed/ready to be delivered and you need to have a demo available. Experience in PHP, Bitcoin and Blockchain is a requirement.

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    We are an ethereum clone masternode cryptocurrency project that is a few months old, listed on several exchanges and looking to add to our team. Various positions available including marketing, community management, development/design and many others. Very promising blockchain project growing very quickly! We pay in crypto currency

    $351 (Avg Bid)
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    28 bids

    I have a new site that is like Quora and I'm looking for someone who can ask and answer common questions regarding Crypto currency to simulate content and activity on the site.

    $7 / hr (Avg Bid)
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    I have a new site that is like Quora and I'm looking for someone who can ask and answer common questions regarding Crypto currency to simulate content and activity on the site.

    $7 / hr (Avg Bid)
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    9 bids

    BUILD A ERC-20 CONTRACT LIKE EOS

    $1338 (Avg Bid)
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    I need fully a crypto currency exchange like bitbns

    $2320 (Avg Bid)
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    28 bids

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