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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    55 jobs found, pricing in USD
    blockchain developer 6 days left
    VERIFIED

    i need a blockchain developer to do something fast and help me write a script prefer in python that takes one string argument and publishes/stores that string on Bitcoin's blockchain will run on testnet and calculate the appropriate fees

    $1156 (Avg Bid)
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    5 bids

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

    $53 (Avg Bid)
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    7 bids
    Timejacking Simulation 6 days left
    VERIFIED

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

    $49 (Avg Bid)
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    1 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.

    $26 / hr (Avg Bid)
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    9 bids

    Talented crypto developer wanted for s revolutionary project. IMPORTANT: Please note the team will get paid with our company token. We are looking for ONLY 2 more developers 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! Make sure to bid only if you agree with those conditions thanks.

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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

    $157 (Avg Bid)
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    2 bids

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

    $140 (Avg Bid)
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    6 bids

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

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    21 bids

    We need an expert who can work to develop an AI based user ranking system for our websites. This is a multitask where you have to work on database and develope a system through blockchain API Only bid if you are expert on AI and blockchain People with good profile and minimum bid will be accepted!

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    1 bids

    I wanna develop a new coin on a new blockchain

    $2282 (Avg Bid)
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    13 bids

    Talented crypto developer wanted for s revolutionary project. IMPORTANT: Please note the team will get paid with our company token. We are looking for ONLY 2 more developers 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! Make sure to bid only if you agree with those conditions thanks.

    $1485 (Avg Bid)
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    6 bids
    Write a whitepaper 5 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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    50 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
    Trophy icon Airdrop Place Logo 1 day left

    Hey everyone! I am looking for professional logo for an airdrop listing site. Here are some examples of other sites that do the exact same thing: [login to view URL] [login to view URL] [login to view URL] The site will be held at [login to view URL] I am looking for modern and clean designs. It's okay for them to be fun in nature and don't need to be too corporate. Might...

    $25 (Avg Bid)
    Guaranteed
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    25 entries

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

    $364 (Avg Bid)
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    4 bids
    ATM Pitch Deck 5 days left
    VERIFIED

    Pitch Deck + Landing Page

    $1008 (Avg Bid)
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    24 bids

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

    $913 (Avg Bid)
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    22 bids

    I need help to understand how to do it The program should: publish on testnet assume a local Bitcoin testnet node is running calculate the appropriate fees

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    4 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.

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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 ...

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    in order to be eligble for the NoS presale i have to develop a proof of concept Dapp on their platform. I have very limited coding skills and won´t be able to succsed myself therefore i want you to create this Dapp for me, it can be anything you like preferbly as simple as possible as long as it´s accepted by the founders of NoS. I know that making a proof of concept app is really si...

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    3 bids

    Looking for Bitgo Wallet Expert for long term position

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    27 bids

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

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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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    5 bids

    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.

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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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    Talented crypto developer wanted for s revolutionary project. IMPORTANT: Please note the team will get paid with our company token. We are looking for ONLY 2 more developers 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! Make sure to bid only if you agree with those conditions thanks.

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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

    $252 (Avg Bid)
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    25 bids

    Talented crypto developer wanted for s revolutionary project. IMPORTANT: Please note the team will get paid with our company token. We are looking for ONLY 2 more developers 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! Make sure to bid only if you agree with those conditions thanks.

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    14 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.

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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

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    I need fully a crypto currency exchange like bitbns

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    25 bids

    setup forkdelta from their public github on our ubuntu instance use a public privity node

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    10 bids

    setup forkdelta from their public github on our ubuntu instance use a public privity node

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    4 bids
    blockchain expert needed 2 days left
    VERIFIED

    i m looking for a block-chain expert who have knowledge in coin, exchange , chain and smart contract Development, only bid only if you have solid skills above area. need to show demo to get this job

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    33 bids

    background:The BON introduces a new blockchain architecture designed to achieve vertical and horizontal scaling of distributed applications. Open networks provide account, authentication, database, asynchronous communication, and application scheduling across multiple CPU cores or clusters. The resulting technology is a blockchain architecture that eliminates user fees and allows developers to qui...

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    I'm looking for experienced developer in Blockchain development. You have to describe your opinion about Blockchain development and send your links concerned with this.

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    42 bids

    We will be awarding this project to multiple developers. We want developers to rigorously test and audit a few smart contracts. For every loop hole or security issue found, a bonus will be released. To be awarded this project find at least one security issue in the files attached and send it in as a message.

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    I need to upgrade this fork of Litecoin: [login to view URL] A new repository with new github account needs to be created. THIS PROJECT REQUIRES ALL WALLET VERSIONS TO BE UPGRADED to reflect the most recent changes to the Litecoin Core. In addition to upgrading ALL wallet versions to reflect the most stable version of Litecoin, I will need a blockchain explorer and a basic website completed. I wi...

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    28 bids

    I want to hire an expert who well versed at Blockchain and Bitcoin...

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    32 bids

    Hello, i want a decentralized peer to peer exchange done based on Ethereum. I want custom design,charts,good interface done and some other special features.

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    38 bids
    ICO Quora Posts 1 day left
    VERIFIED

    Need a mass Quora posts that links back to a project. I'll pay 30 seconds per post.

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    We are a blockchain for Global Traders Agreement and Deliveries. We are starting ICO by October We Need Experienced community manager and telegram moderators for our Korea, Chinese and Japanese communities. Basic skills: Telegram Add Users based on your location Good interaction and conversation with community in your language and English Availability

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    I am a professional java developer, and I need help with my Java project. I created many tasks on my Github repo. Please take a look and tell me what of them you would like to do. If I like your work, I will hire you again. Repo: [login to view URL] Website: [login to view URL]

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    We are looking for someone that can do a full wallet re-design of a qt wallet to look something similar to this. [login to view URL]

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    22 bids
    Masternode Listing Script 21h left
    VERIFIED

    I need masternode listing script it will get infos from back end and will show on front end. You can see here ex: [login to view URL], mnrank.com. If you dont know anything about masternode please dont bid

    $182 (Avg Bid)
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    8 bids

    background:The BON introduces a new blockchain architecture designed to achieve vertical and horizontal scaling of distributed applications. Open networks provide account, authentication, database, asynchronous communication, and application scheduling across multiple CPU cores or clusters. The resulting technology is a blockchain architecture that eliminates user fees and allows developers to qui...

    $167 (Avg Bid)
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    9 bids

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