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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    53 jobs found, pricing in NZD
    Bitcoin Vendor Shop for TOR 6 days left
    VERIFIED

    I want btc vendor shop where i can sell stuff 100% anonymous hidden on tor. You will setup the website and hosting on TOR.

    $223 (Avg Bid)
    $223 Avg Bid
    3 bids

    Looking for a freelancer who can create a smart contract which allows to bulk send airdrop bounty from and existing database.

    $244 (Avg Bid)
    $244 Avg Bid
    13 bids
    Smart Contract Security Audit 6 days left
    VERIFIED

    Perform a security audit for an ERC721 smart contract. Details about the project, including the white paper, can be found in the following website: [login to view URL]

    $1841 (Avg Bid)
    $1841 Avg Bid
    12 bids

    I need post hash and fetch hash functions for the blockchain.

    $144 (Avg Bid)
    $144 Avg Bid
    4 bids

    I need ERC20 Token creation in ethereum mainnet and an ICO website for that token.

    $915 (Avg Bid)
    $915 Avg Bid
    10 bids

    Design and develop a Blockchain layer between the existing Recruitment & HR System. Creating the smart contract based on the business logic. Multiple smart contract development required.

    $825 (Avg Bid)
    $825 Avg Bid
    9 bids
    Ethereum - Solidity help 6 days left
    VERIFIED

    I need help with a lottery dapp -can I generate an array of 15 random numbers to create a ticket for the buyer -generate 40 random numbers for the game round. Can I return a dynamic array with all the numbers and does it cost a lot of gas to call the function to generate each of every time

    $13 (Avg Bid)
    $13 Avg Bid
    1 bids

    Hello, We are interesting in launching a Cryptocurrency Exchange feature our own ERC-20 listings that would not be listed on our exchanges. As such we need our own Order Management System that could support our own network of market makers. We also need to support some of the major coin trading pairs and integrate with a major exchange for liquidity. However, this is our secondary requirement, n...

    $24040 (Avg Bid)
    $24040 Avg Bid
    38 bids
    Build a Mining Pool Website 5 days left
    VERIFIED

    Build a Mining Pool Website Like [login to view URL] [login to view URL]

    $212 (Avg Bid)
    $212 Avg Bid
    10 bids

    A coin with its own block-chain (not a ico!) Ripple like: - Fast and fully anonymous - All coins are pre mined - You provide me with a panel that i can set coin symbol, Name, Amount of total coins and ect.. - you train me to any future maintenance if there is any. - You provide me with an explorer to the coin block chain. - Wallet (Desktop not Cloud) for pc windows that can store also other coins.

    $1489 (Avg Bid)
    $1489 Avg Bid
    21 bids

    we have an ERC20 token smart contract implemented, but it doesn't have the precise voting mechanics, we want to be able to enable the voting mechanics in there. Please fix the problems exist with the smart contract and implement a voting mechanism

    $814 (Avg Bid)
    Featured
    $814 Avg Bid
    19 bids

    We are looking for someone that can do a full wallet re-design of a qt wallet to look something similar to the below. It should be done asap and also requires skills to be able to add a real-time graph like the example that will be getting the price of the coin and an option to see how much your coins were worth over a certain period of time. [login to view URL]

    $288 (Avg Bid)
    $288 Avg Bid
    6 bids
    Develop ICO Website 5 days left
    VERIFIED

    Develop the ICO website with full function. You must have to have previous project source code. We need immediately so if you want to start from scratch don't bid. Submit your ICO website I'll check all function and send you a private message. Thanks!

    $602 (Avg Bid)
    $602 Avg Bid
    16 bids

    Hi my company is about to start an ICO within 2 weeks (30th of November 2018) I need to list my ICO on token exchange platforms, such as - [login to view URL] - [login to view URL] - [login to view URL] - [login to view URL] - [login to view URL] - [login to view URL] I need support to do this, with a special attention over the issue of KYC and AML

    $4447 (Avg Bid)
    $4447 Avg Bid
    13 bids

    I want to start a company for ASIC mining chips...need engineers and software developers.

    $2521 (Avg Bid)
    $2521 Avg Bid
    13 bids

    Hi, Iam interested in learning Block chain technology. I want practical exposure on languages or tools like Solidity, Ethereum, Smart contract, Golang etc.. Looking for a professional who is currently working on Block Chain technology.

    $235 (Avg Bid)
    $235 Avg Bid
    3 bids

    Hi, We have a website in Drupal and I would need an expert to integrate coingate or coinbase Bitcoin payment on the website. I can share the API keys with the developer.

    $202 (Avg Bid)
    $202 Avg Bid
    6 bids

    I want to develop a proof of stake cryptocurrency with masternode probably a fork of PIVX including a qt wallet and develop an API for merchant to receive payments.

    $1255 (Avg Bid)
    $1255 Avg Bid
    17 bids
    Master Node Complete Project! 4 days left
    VERIFIED

    Master node coin Developer! I'm looking blockchain developer who can fork DASH. You must have to have experience! Submit your previous project link! Without a link, I won't reply to your message whatever you submit!

    $1801 (Avg Bid)
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    24 bids

    I want to launch a US Corporation that will churn out Apps and Software Products, one every few weeks and ultimately becomes one of the Major Software companies and can compete with CA/Microsoft/Oracle/IBM etc. I am looking for partners/co-founders/ who can contribute their work to this project and make it a success. My role will be to bring every contributor to the project together and invest the...

    $32 / hr (Avg Bid)
    $32 / hr Avg Bid
    9 bids

    I'd like to build a trading engine with using REST API. These are the optional api service what I am thinking of. - [login to view URL] - [login to view URL] - [login to view URL] I wish to develop a trade engine based on rest api preferrably, I have to develop and plug/play existing module to existing backend system. Trading Engine Specs - Node.js as api server - Mongo as database Pleas...

    $1024 (Avg Bid)
    $1024 Avg Bid
    15 bids

    Key features For Coin Development 1 Setting up of Cryptocurrency node servers 2. Set up coin parameters 3. Generation of Blockchain 4. Coin Generation 5. Pool mining 6. Web Explorer 7. Web Wallet 8. Admin Wallet 9. Exchanger Connectivity API

    $2508 (Avg Bid)
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    17 bids

    Hi I have a ERC 20 Smart Contract with very basic functionality that I need to get audited Thanks

    $237 (Avg Bid)
    $237 Avg Bid
    6 bids

    I need a professional blockchain developer to setup my ERC20 wallet app for Android, iOS and web within 7days if possible. My budget is $200 but I can consider increasing it if you impress me

    $955 (Avg Bid)
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    18 bids

    I want you to read this paper from chapter 5-8 to understand the concept... I need you to take the Use cases from the white paper ( chapter 6&7) and make them in to Yellow paper meaning, write how it will be done technically... All I need is just the technical write up of how these use cases can be achieved I want to write a yellow on the project.. What I need is just the write down of the te...

    $747 (Avg Bid)
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    9 bids

    I want to build smart contract of erc 20 token with all pre mined token.

    $2506 (Avg Bid)
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    14 bids

    Dear Readers, We’re looking for a blockchain specialist with experience in building Dapps. A freelancer that can build a simple, basic but safe cryptowallet for the Tronplatform. ([login to view URL]) We want to be able to integrate this wallet with our future gameplatform. It should be able to function as a payment system for our platform. The product we’re looking for is a website ...

    $1256 - $2512
    Featured Sealed
    $1256 - $2512
    30 bids

    We are an ICO looking for a community manager. We need to build a community on different platforms: Facebook, Instagram, Linkedin, Reddit, Zendesk etc. The proficiency level of english is required and a photoshop knowledge is appreciated. Previous experience in ICO projects is required.

    $25 / hr (Avg Bid)
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    19 bids

    Sell my domain name ( [login to view URL]) if you can get be best proposal we can close the deal also apart from fees and feedback i will pay you a commission

    $64 (Avg Bid)
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    4 bids
    ICO whitepaper writing 2 days left
    VERIFIED

    I need someone to write White paper for my upcoming Decentralized news Platform which consume Blockchain technology to Broadcast and censor news items through Smart Contracts.

    $31 (Avg Bid)
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    9 bids

    we need a blockchain developer to fix an issue in our network. What should be fixed: - Unstable Network  - Upgrade Coin Wallets ( this mean upgrade servers and explorer and everything connected with our coin node ) We are looking for a long-term relationship, when everything is done!

    $230 (Avg Bid)
    $230 Avg Bid
    7 bids

    the supply chain in the FCMG industry is currently trying to develop itself with the high trendiness of blockchain, due to that, it is required to make an academic research (thesis like) about what are the current practices used in the supply chain for the FCMG industry and what are the voids in those practices or issues that blockchain could solve. please keep in mind that the references should b...

    $397 (Avg Bid)
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    36 bids

    The PoC is already developed for a healthcare organisation, the authority of data provided by the patient is to be set. Only who has worked on Hyperledger fabric shall bid.

    $46 (Avg Bid)
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    1 bids

    Need some expert writers who are experienced in cryptocurrency industry and blockchain technology. Technical writing experience is preferred. We need in-depth and well-researched articles.

    $127 (Avg Bid)
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    24 bids

    I need a fully secure Cryptocurrency exchange open for customers in India with a few currencies already listed on it and should be equipped with full KYC.

    $954 (Avg Bid)
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    15 bids
    Bitshare core Development 1 day left
    VERIFIED

    I want to build my own blockchain using Bitshare Core. If you have experience in Bitshare core blockchain, please contact me. I want to hire true developer. Regards.

    $884 (Avg Bid)
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    22 bids

    Looking for a core wallet system for Ethereum, XRP, and ERC token system. The wallet will need to generate new address for users and it must be installed and tested correctly with no security flaws. It would be preferred if you know C++. and have solid security background.

    $632 (Avg Bid)
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    13 bids

    I need a professional to program a digital currency based on bitcoin. 1 - Change the reward rule by mining. 2 - Start the coin mining process through my miners.

    $804 (Avg Bid)
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    19 bids

    We are looking for someone that can do a full wallet re-design of a qt wallet to look something similar to the below. It should be done asap and also requires skills to be able to add a real-time graph like the example that will be getting the price of the coin and an option to see how much your coins were worth over a certain period of time. [login to view URL]

    $243 (Avg Bid)
    $243 Avg Bid
    7 bids

    Just quite a simple task. The problem is I need to implement it with segwit to receive coin. The wallet can't receive coin ( not showing up in wallet for incoming coin ) but shows up in blockchain. Once you are done fixing, you will send me apk file to testnet before sending me the source code.

    $268 (Avg Bid)
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    23 bids

    The requirements are been attached and bid only after reading the document ! The entire project is been already opensource where you need to run the opensource git and then customize few changes. *** Again Bid only those whom really can work on this ***

    $301 (Avg Bid)
    $301 Avg Bid
    8 bids

    Hi, I thus need only experts who have already with with mining pools ! The requirements are been attached and bid only after reading the document ! The entire project is been already opensource where you need to run the opensource git and then customize few changes. *** Again Bid only those whom really can work on this ***

    $26 / hr (Avg Bid)
    $26 / hr Avg Bid
    7 bids

    I'm looking for DAG expert. will discuss more via FL.

    $1949 (Avg Bid)
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    8 bids

    We are going to build a decentralized exchange until Nov 30th. We want to choose true freelancers who have experience in Decentralized Exchange Platform. Please start your proposal with "I can do" and share your built DEX platform. Automatic bids or copy & pasted bids will be rejected. Regards.

    $2744 (Avg Bid)
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    38 bids

    I need someone to help with gitian builder. It keeps failing with an miniupnpc checksum error. I need someone to fix my code so that i dont get this error and to fix any other errors that i might get after the miniupnpnc thing.

    $34 (Avg Bid)
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    1 bids

    Hi, we are looking for freelancers who can help us customize certain open-source security solutions to use elements of blockchain ledgers and fit into our larger set of products and services. We might be interested in both project-based and pay-per-hour long term cooperation. The key requirements: - skilled at golang - experience with information security and ideally development of security prod...

    $32 / hr (Avg Bid)
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    24 bids

    Cryptocurrency exchange startup is looking for senior php developer. Your responsibilities as a member of dev. team would be to write from scratch the cryptocurrency exchange platform. Your key contribution to the team would be to bring the technical knowledge about cryptocurrency/blockchain technology and security best practices. Technical requirements - familiarity with *nix ecosystem is mandat...

    $4020 (Avg Bid)
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    52 bids

    We develop the game system separately. Please create a system that can purchase cards like the current Gods Unchained. Please collect all 10 packs and turn on the function which can display only rare. Please be sure to replace graphics. [login to view URL]

    $1505 (Avg Bid)
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    15 bids
    Create a new Crypto Currency 39 days left
    VERIFIED

    Create a new Crypto Currency by Improving open source existing codes and ensure its reliability to connect to external environments, and implement sepcific specs and deliverables and high level security.

    $5024 - $8374
    Featured Sealed NDA
    $5024 - $8374
    59 bids

    I need someone to help me setup my own mining pool, preferably Yiimp using open source github code. I need it does as soon as possible. Please bid if you are sure that you can do it and done this before. The cheaper price will win this project. Thanks all in advance.

    $44 (Avg Bid)
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    1 bids

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