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    816 solidity jobs found, pricing in USD
    Defi Flash Loan programmer 6 days left
    VERIFIED

    Looking for a experienced Defi/ solidity programmer who is able to write a simple flash loan program. Many Thanks

    $1175 (Avg Bid)
    $1175 Avg Bid
    5 bids

    Looking for experienced Dapp developers for the HPB blockchain. The ideal candidate will have experience with solidity, remix, web3, node.js, [login to view URL], react, and proven experience with deploying dapps.

    $68408 (Avg Bid)
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    1 bids

    Looking for an experienced solidity developer to help develop smart contracts for the HPB blockchain, which uses the Ethereum virtual machine

    $68408 (Avg Bid)
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    1 bids
    Solidity dapp consultant 6 days left
    VERIFIED

    We are seeking experienced developer to help us develop dapp to transfer self-issed tokens between holders. you must have similar dapp project deployed for review. Initially we require consultation which we will pay for your time to fine-tune requirement document. Later we'd agree to project costs based on detailed project scope.

    $20 / hr (Avg Bid)
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    8 bids

    We need to make an arbitrage bott, example: 0x78a55b9b3bbeffb36a43d9905f654d2769dc55e8 Which knows how to trade between different Ethereum DEX The bott includes 1. Server backend part - receiving pending transactions (work with ether node) - building arbitrage exchange chains - calculation of exchange profitability - sending your transaction to the network 2. (Less important part) Smart contract t...

    $2843 (Avg Bid)
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    8 bids

    We are looking for an expert level Blockchain developer. Must have experience with solidity 2+ years. Must be familiar with Uniswap, ETH2.0 stacking contract.. Must be available for full time work immediately. NodeJS, AngularJS experience is mandatory.

    $21 / hr (Avg Bid)
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    9 bids

    I am looking for a full stack solidity developer with experience of using Erc 1155 or ERC 721 NFTs, who can help me create an NFT food app on Testnet. Using the app, a user should be able to buy ingregient nfts with ether and then burn them to mind another NFT(dish). Eg Use eth to buy potato, oil and salt (NFTS) and then burn the three nfts to get a fourth nft. Wireframe available Deliverables...

    $171 (Avg Bid)
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    1 bids

    I am looking for a full stack solidity developer with experience of using Erc 1155 or ERC 721 NFTs, who can help me create an NFT food app on Testnet. Using the app, a user should be able to buy ingregient nfts with ether and then burn them to mind another NFT(dish). Eg Use eth to buy potato, oil and salt (NFTS) and then burn the three nfts to get a fourth nfts. Wireframe available Deliverable...

    $186 (Avg Bid)
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    3 bids

    I am looking for a full stack solidity developer with experience of using Erc 1155 or ERC 721 NFTs, who can help me create an NFT food app on Testnet. Using the app, a user should be able to buy ingregient nfts with ether and then burn them to mind another NFT(dish). Eg Use eth to buy potato, oil and salt (NFTS) and then burn the three nfts to get a fourth nfts. Wireframe available Deliverable...

    $105 (Avg Bid)
    $105 Avg Bid
    2 bids

    I am looking for a full stack solidity developer with experience of using Erc 1155 or ERC 721 NFTs, who can help me create an NFT food app on Testnet. Using the app, a user should be able to buy ingregient nfts with ether and then burn them to mind another NFT(dish). Eg Use eth to buy potato, oil and salt (NFTS) and then burn the three nfts to get a fourth nfts. Wireframe available

    $240 (Avg Bid)
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    2 bids

    I am looking for a full stack solidity developer with experience of using Erc 1155 or ERC 721 NFTs, who can help me create an NFT food app on Testnet.

    $167 (Avg Bid)
    $167 Avg Bid
    4 bids

    I am looking for a full stack solidity developer with experience of using Erc 1155 or ERC 721 NFTs, who can help me create an NFT food app on Testnet. Using the app, a user should be able to buy ingregient nfts with ether and then burn them to mind another NFT(dish). Eg Use eth to buy potato, oil and salt (NFTS) and then burn the three nfts to get a fourth nfts. Wireframe available Deliverable...

    $393 (Avg Bid)
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    2 bids

    I need a Tech content writer to have good knowledge about blockchain, ethereum, solidity and DEFI ( decentralize finance) to help me write my project whitepaper

    $113 (Avg Bid)
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    11 bids

    We are looking for an experienced frontend developer who can link the functionalities from our smart contracts to the frontend. You will be working with our current developer in establishing and linking our project together. We are building a decentralized exchange and have certain requirements as follows: 1. Past experience working Decentralized exchanges, fintech products, knowledge of uniswap ...

    $1238 (Avg Bid)
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    62 bids

    We need to make changes in our solidity project. And it will be deployed in Matic Network. Note: Experience in github is must and developer must have a github account.

    $654 (Avg Bid)
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    5 bids

    We have designed and coded an ERC20 solidity smart contract with proxy. After changing the main contract and then redeploying the proxy contract to testnet, it doesn’t change the main Contract - can you help with the remedy and deployment so it’s fully functional and also review/make recommendations on the code ? Any questions, please do let me know :) Code base is in GitHub and con...

    $13 (Avg Bid)
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    1 bids

    We need an experienced Solidity developer for long-term cooperation in order to write, analyze, study Ethereum Smart [login to view URL] are interested in long-term cooperation as we are constantly working in the blockchain field.

    $5000 - $10000
    $5000 - $10000
    0 bids

    We need an experienced Solidity developer for long-term cooperation in order to write, analyze, study Ethereum Smart [login to view URL] are interested in long-term cooperation as we are constantly working in the blockchain field.

    $5000 - $10000
    $5000 - $10000
    0 bids

    We need an experienced Solidity developer for long-term cooperation in order to write, analyze, study Ethereum Smart [login to view URL] are interested in long-term cooperation as we are constantly working in the blockchain field.

    $250 (Avg Bid)
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    1 bids

    I want to write a smart contract to call an advance() function with optimal gas. Details will be share through PM. Skills Required. I would be done in 2 days. Really simple

    $105 (Avg Bid)
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    4 bids

    We are looking for an expert level Blockchain developer. Must have experience with solidity 2+ years. Must be familiar with Uniswap, ETH2.0 stacking contract.. Must be available for full time work immediately. NodeJS, AngularJS experience is mandatory.

    $23 / hr (Avg Bid)
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    25 bids

    Need a blockchain developer that can code in Solidity and has experience with ERC721 NFTs and Ethereum smart contracts to build an NFT marketplace.

    $601 (Avg Bid)
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    20 bids

    I want to write a smart contract to call an advance() function with optimal gas. Details will be share through PM.

    $168 (Avg Bid)
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    7 bids

    I want to write a smart contract to call an advance() function with optimal gas. Details will be share through PM.

    $10 - $30
    Featured
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    0 bids

    Hello Samira, I stumbled over your EtherCert project and got curious about you. Can you tell me more about your experience with solidity and frontend development? Regards, Matthias

    $5 / hr (Avg Bid)
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    I would like the services of an experienced blockchain developer. The developer will be required to develop a cryptocurrency arbitrage trading bot which will have the ability to access and subscribe to flash loans, apply the acquired flash loans to arbitrage trades (track coin price disparities on multiple exchanges and buy or sell where disparity is significant) on as many blockchain exchanges (...

    $673 (Avg Bid)
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    11 bids

    We need a developer to create a cryptocurrency for us with solidity, based on the eth token. This token will be used in our internal system, for trades within our software, we would like to use blockchain technology in order to ensure the flow and history of the trades. It might one day have its own ICO if we find the right people to stand behind it, so be prepared to write whitepaper documentat...

    $22 / hr (Avg Bid)
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    16 bids

    My team wants to publish their own solidity contract on the ether blockchain. It should not be a typical ERC20 but has to have special properties which will be discussed in detail with the freelancer. The code has to be developed in solidity and deployed to a testnet for testing. The deployment process on the mainnet will be handled by me and my team. Previous experience with blockchain technology...

    $334 (Avg Bid)
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    6 bids

    1- Creating a modern user friendly web3 site. 2- Creating a ERC-20 token based voting system in that web3site. (open to suggestions, ideas for ways to do it. If you explain your ways to do it and possible scenarios to achieve it there is a higher chance to proceed) 3- I have a DEX platform which enables ERC-20 token exchanges. ERC-20 token that we are going to create will be the DEX's plat...

    $110 (Avg Bid)
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    7 bids

    Develop smart contract in solidity for tron. Smart contract will be same as forsage with some less functionalities. Please check attachment.

    $104 (Avg Bid)
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    3 bids

    Looking for solidity and Ethereum smart contracts developer for writing new smart contracts.

    $1113 (Avg Bid)
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    10 bids

    Looking for developers of Blockchain and Decentralized Application Development. The developers should have the following skills. - Games Design and Development - Software Development in Blockchain Technology - Decentralized Applications Development - Crypto Token Development and Interface - Languages that may need: C++, Java, JavaScript, and Python, Solidity, Simplicity, and CX - Graphic Devel...

    $2469 (Avg Bid)
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    41 bids

    Hello, blockchain developers! I get met a failed problem of sending eth. I think, there are some bugs in the contract code. Who can review the code and audit what is the reason for the transaction failure? If you are not really a smart contract and solidity expert, don't bid! Regards.

    $145 (Avg Bid)
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    4 bids

    Help implement a canonical staking contract for use in benchmarking.

    $20 / hr (Avg Bid)
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    9 bids

    blockchain, ethereum, smart contract and solidity dapp project

    $148 (Avg Bid)
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    9 bids

    Hello aakash, I know something about solidity, ethereum smart contract, and i already deployed also two smart contact.. I have problem with errors on calling functions from smart contract.. So i want to learn overall things about that.. We will connect at Sunday.. 4-5 hr.. For this..?

    $4 / hr (Avg Bid)
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    1 bids

    Urgent need ERC20 Solidity developer for a project.

    $23 / hr (Avg Bid)
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    3 bids

    Hello, thanks for take a look at my project. So i'm looking in someone ready to fully develop a Dapp, based on my instructions, already have the design done in HTML CSS ( figma ) , I don't have anything related to the token it self, + all the function of my dapp and how it would work with my token. What I'm looking is : ERC 20 Token smart contract done as well with OpenZepplin ( w...

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    24 bids

    A new model for enhanced blockchain security and remove the blockchain vulnerabilities

    $309 (Avg Bid)
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    8 bids

    I'm looking for someone to build me an staking dApp Possibly from a fork of another project So we can save sometime with the build. You have to master solidity. I will share my detailed info with selected dev.

    $163 (Avg Bid)
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    3 bids

    ZRPL is an Indian Retailer (8 yr old company) that provides customized go-to-market solutions for Consumer Electronics and FMCG companies. You can read more about the company on www.zrpl.co.in. Current logo is black and blue. Looking to update this with something better looking. Logo should evoke the following 'traits' / "feel" : Indian company Technology Solidity / Reliabi...

    $48 (Avg Bid)
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    49 bids

    JavaScript Developer For Game/Blockchain Project (Long-Term, Part-Time or Full-Time) To apply - please complete this short application form: [login to view URL] What We're Looking For: Ideally, you'll have full-stack experience, but with a front-end focus. You must have good experience with: * Vue.js * [login to view URL] * Node.js Experience with Solidity is a plus, but not require...

    $20 / hr (Avg Bid)
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    15 bids

    I want to hir some one expert in python/go lang to build Blockchain and manage it with HADOOP for big company, skills needed: Spark, golang, Julia solidity HADOOP python php backend, blockchain

    $125 (Avg Bid)
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    2 bids

    I want to hir some one expert in python/go lang to build Blockchain and manage it with HADOOP for big company, skills needed: Spark, golang, Julia solidity HADOOP python php backend, blockchain

    $122 (Avg Bid)
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    1 bids

    We are looking for a Smart Contract experienced developer. - Knowledge about Ethereum Smart Contract - Knowledge of setting a private geth node of Ethereum and Genesis initialization file - Understanding of Java call to Solidity programs We are having an issue to call Solidity functions by Java. I need you to figure out this problem and solve it. Executing a solidity to save information is workin...

    $30 (Avg Bid)
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    i am looking for a professional full stack developer that can develop a complete token system platform, and you need to provide me your work Samples It will write a smart contract in solidity language It will test and audit that smart contract It will use SafeMath libraray to avoid integer overflow and underflow It will deploy the smart contract on ropsten test network and main ethereum network. I...

    $199 (Avg Bid)
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    Autonomous Capital seeks experienced Solidity Developer. This is a full-time remote position and a chance to get in on the ground floor of an ambitious young start-up. We offer attractive compensation along with the opportunity to earn in crypto. Our mission, as a hedge fund DAO, is to enable developers who lack Solidity and or blockchain experience the ability to host automated trading strategi...

    $37 / hr (Avg Bid)
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    18 bids

    I need someone to develop a smart contract, implement, test and deploy it.

    $518 (Avg Bid)
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    19 bids

    im creating a pizza creator and want to create an NFT token that is a pizza and i want all payments used to create that pizza to be sent to another token that i have

    $178 (Avg Bid)
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    6 bids

    Smart Contract Audit ERC20 Solidity 1. Test all files for security 2. Test for code durability 3. Test that code works as whitepaper details it 4. Supply me a report for your work and any flaws, code changes required etc

    $300 (Avg Bid)
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    1 bids