Ethereum is a decentralized platform that runs smart contracts- applications that run exactly as programmed without any possibility of downtime, censorship, fraud or third party interference. Hire Ethereum Developers

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    513 jobs found, pricing in USD

    I need someone who already has the source code to create an Etherum Wallet (send, receive, QR) for Android and iOS.

    $437 (Avg Bid)
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    We are look for a blockchain/ethereum expert to work on our ICO Web Project.

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    Hello i did a fork of PVIX blockchain and i want to build a multi signature wallet

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    Create ERC20 and ERC721 tokens on Ethereum blockchain More to be discussed if you have experience with cryptocurrency blockchains.

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    I want to build a gambling website based on the blockchain. I shall show you an example from where we may proceed in detail. I need the person to have strong knowledge of Blockchain, Game development and Web development. Further details can be discussed on chat

    $6058 (Avg Bid)
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    blockchain POC 6 days left

    Hi, ONLY BID IF YOU HAVE CREATED THIS BLOCKCHAIN IDEA BEFORE: I need a quick POC blockchain: a social network but only the very basic working at this moment. So, I can add you, you can add me, that sort of a thing. Can you provide me with this now? Thanks and regards, Ndroi

    $20 / hr (Avg Bid)
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    Hi Freelancers. I'm looking for similar service as primablock - a service to pool funds(ETH) from a large group and after this send them to 3rd party. You can learn more here: [url removed, login to view] [url removed, login to view] And here is a very informative blog post about the development of primablock: [url removed, login to view] Would you be able to deliver a service like this? If yes, please provide your budget and timeframe.

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    Details as discussed on the chat

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    We need someone to create the Decentralized marketplace for skins ( video games ) For more information about whole project contact me.

    $20446 (Avg Bid)
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    We are looking for a developer who can build chat app for us. This is a long-term project so please don't think to complete fast and finish the project. App similar to Telegram app. We are from Anand so you have to come and meet us regarding this. Must have knowledge of blockchain&Ethereum&Bitcoin

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    I would need someone to implement a Smart Contract for an ICO's investing platform for my startup company. The contract would need to collect funds from a range of whitelisted addresses, then take away a fee and send the remaining ETH to an address chosen by the creator. I would need you to develop a user interface for both the investors and the creator of the contract. Previous work must be needed, and ideal. Without this, I will ignore you.

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    Hello looking for a great guy to look into all 4 contracts and make sure all is good within the contract. I will hire 2 people.

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    Hello looking for a great guy to look into all 4 contracts and make sure all is good within the contract. I will hire 2 people.

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    Ethereum Server Configuration 4 days left
    VERIFIED

    can you modify ethereum source ? CPU Resource is used for as is POW (proof of work) 100% (10 minute) to be running other process 80% (8 min.) , POW 20% (2min) change ethereum source and add 80% function and decrease POW time 20% round 1 : 8min, other process is exe adding from 1 to 100, name is proof of flop round 2 : 2min, proof of work, probability is according to round 1 time, difficulty is as per 1/POF first job is planning of programming highlight portion of source and make description of program it's not coding just making explanation document how to modify source how much can you do ?

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    ICO-CryptoCOIN Specialist 4 days left
    VERIFIED

    Looking for an expert who got on-hand experience from drafting till project implementation for ICOs and Implementation. Project cost mentioned is adhoc, will be finalised after selecting the appropriate personnel Thanks Happy bidding.

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    I have a successful blockchain project, I am planning an ICO, with a token sale and also a pre-sale. Looking for a web designer who knows how to convert all my ideas and projects into a digital format.

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    We are a new Cryptocurrency Coin and we are currently seeking individuals to complete our Team of Advisor. If you are interested please let us know your availability. Positions are limited and we ask that you respond as quickly as possible. Please send all responses to [Removed by Freelancer.com Admin - please see Section 13 of our Terms and Conditions] Following Positions are Available; Online Marketer Blockchain Developer Software Developer Legal Advisor UX Designer Investment Advisor Social Community Manager Must have LinkedIn account. Website design, Blockchain Developer, Legal Adviser, UX designer, Investment Adviser, Social Media Manager, Online Marketer, Software developer

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    Need Crypto Exchange 3 days left
    VERIFIED

    Hi, I need Crypto exchanges for some of my projects. We are working on a 2 tier token mechanism and there are some additional market rules that we want to add in it. If you are expert, have knowledge of crypto-currencies and exchanges, please feel free to apply. More details to be shared with shortlisted candidates. Agencies and freelancer, both are encouraged to apply. Again, my primary concern for now is to get Crypto exchange. Looking forward, Thanks!

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    I am looking to do a similar service as “prima block” - a service to pool funds (ETH) from a large group and after this send them to a 3. party. You can learn more here: [url removed, login to view] [url removed, login to view] blog post about the development of prima block: [url removed, login to view] Would you be able to program/deliver a service like this? Have you ever developed a similar service to “prima block” before? If then, please show me. And If you can really do this project, what would be your budget and timeframe?

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    1. Please make the main diagram shows Smart contracts and the relationship between them for this project and show me, so prove you're just the best fit for it. (The detail explanation for this project is following) 2. Please show me the example of Smart contracts(customized ERC20 token, ICO, crowdsale) you developed. 1) Utility token smart contract - for ICO and distribution on Etheruem network -ERC20 -180,000,000 total supply 2) Room Token smart contract to buy it optionally during or after the ICO with Utility tokens - mintable and burnable by contract creator (for new resorts or lost tokens) - 23,750 initial total supply - NFT tokens (ERC 721) - price: 2500 utility tokens (it changes depending on season) (they get locked and can be returned after 1 year period, if you lock for 2 years or more you get more back - if you wish to unlock earlier you get a penalty) at the time of buying you add : variables - date - room number 3) timeshare multisig smart contract - for sharing room tokens and rewards in utility tokens - multisig - oracle input from our calendar: the guest chooses his time period to share his room token and then for that time period the room token is not available to him but to us ("the resort"). we then forward the temporary permission to use to token to another guest (to his eth wallet if he is a crypto customer or we put it on a hardware wallet and give it to him at the arrival to the resort or we just keep it for ourselves if he doesn't care and is not coming 100% anonymously ) -after the renting period is over the room token is returned automatically - monthly payout in utility tokens to the token holder depending on if the Room was rented - a fixed amount of utility tokens reward is sent to a special wallet for charity 4) zkSnark password to prove that you own the room token on your wallet at the arrival to the resort 5) biometrics on eth wallet for door unlock (you don't need a pass anymore, you prove token ownership with a fingerprint)

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