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    102 jobs found, pricing in USD

    I am looking for a pancakeswap exeprt that can integrate the smart contract with frontend. This project is urgent. Please check these(frontend and smart contract). If you can finish this project in 2~3days, please apply with your past work. Cheers. James

    $590 (Avg Bid)
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    15 bids

    I want to mint all my 10k NFTs and avoid gas fees when reveal it can someone help me? new freelancers will be ignore

    $387 (Avg Bid)
    Featured
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    55 bids

    Hey, I wanted to ask if you can develop a complete NFT project? with e.g. a website with Wallet Connect button, a mintpage, smart contract, pre sale (whitelist) and public sale, after mint upload to Opensea and a few more tasks? Write me!

    $1256 (Avg Bid)
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    43 bids

    Hi We are building cryptocurrency P2E casino game website now I need to add 2 casino game expert using crypto currency One is Holdempoker game and another one is Roulette game I will hire right now if you have experiences in this field Thank you

    $21 / hr (Avg Bid)
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    21 bids

    I am looking to have an NFT project created, it needs to be 5,000 unique women and 5,000 unique men drawings. we can either partner up on the project and work together long term causing you to make more money or this can be a one time thing where i pay you for it and then we are done. i would proffer the partnership as this project has been requested by many and has a lot of potential if done right and will need another set of nfts creating in the future (that set will contain 7,777) however if you chose to just go forr the one time payment then that does not concern you. The NFTs will have to be animated but look somewhat realistic. i would need the images and the metadata. the images will All be unique and not one the same. some may have a dad bod and a massive beard, one might look abso...

    $105 (Avg Bid)
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    10 bids

    Need you to write nft smart contracts to mint nft on the polygon main net.

    $125 (Avg Bid)
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    10 bids

    I need someone that can build NFT marketplace website. Attach your portfolio Thank you.

    $165 (Avg Bid)
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    13 bids

    Hi freelancer. We are a rising Blockchain company and going to start a NFT marketplace based on Solana. Front end and NFT collection is almost ready. And we urgently need Rust smart contract developer. To join our team, you have to pass a simple test. You will get paid for this test project by any method you want. Indians preferred. Most of our team members are Indians.

    $540 (Avg Bid)
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    10 bids

    I'm am looking to build something that scans the items in the Axie Marketplace. The system will give me information as to which items are profitable to buy and then sell. I will need it to provide alerts when - an item is advertised on the marketplace that is 20% below the next cheapest item. needs to also show the one month average for that item - when supply of an item drops by more than 30% over the one month average. It doesnt need to look fancy. It just needs to be easy to use. All the code will be provided to me and owned by me.

    $1779 (Avg Bid)
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    16 bids

    Ok, we have made everything and used hashlips art engine. we have the images and json files for each nft (the metadata) we just need to create smart contracts on erc721

    $2364 (Avg Bid)
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    17 bids

    I am looking for an experience full-stack NFT minting website developer to help me build a presale and public sale website. 1. Reactive minting website with wallet integration - presale whitelisting - phased minting to avoid gas wars 2. Smart contract programming: - Royalties - Rarity metadata - upgrade ability - utility functions I am also looking for someone to provide advisory for our project to ensure best practices and scalability.

    $51 / hr (Avg Bid)
    Local
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    8 bids
    Solidity Contract Correction 5 days left
    VERIFIED

    Hi, I need the following contract to work without error and to do what it is supposed to do. Your job is to make it work and remove any errors or trojan code. It needs to be compiled without issue in Remix.

    $150 (Avg Bid)
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    14 bids

    I want to develop a p2p encrypted messaging platform, some specific functions and I would like to integrate my bsc token in this application as a possibility to transfer funds. we need to integrate in the application a wallet, and an external crypto payment processor in order to be able to add funds.

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    8 bids

    We are creating a smart contract and are having issues with implementing a small burn tax based strictly off of sells. We are looking for consultation and reviewing the code for it to properly work when using using Ropsten Test The created ERC20 will have tax on sells. We are trying to achieve this by creating a mapping(address => bool) where we set the pool address = true, and then in _transfer function checking if a recipient == to the pool, based on that there is either a normal transfer or a transfer that is taxed. The end goal is that on sales there will be a tax implemented, we are open to using other methods if necessary. The priority is for the sells to work on swaps. Start your message with the word -2026- so I know you are not a spammer, cheers Below you will see the cur...

    $183 (Avg Bid)
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    13 bids

    Hello, I need blockchain developers for a long-range project. U should be good in either Front end development, Back end development, Smart contract, or bot development. Comment with your skills and you will be messaged privately.

    $515 (Avg Bid)
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    19 bids
    NFT marketplace 5 days left

    We are going to build a new NFT marketplace from scratch, so if you have a deep experience in NFT marketplace, bid free here

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    48 bids

    Looking to hire an experience blockchain developer for defi projects for our company. We will check your previou experience and github profile on the interview. We will start with right candidate immediately!

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    We are going to build one dApp similar to metaverse system on ARK blockchain network. If you have good experience and skills, please reach out to me. (600USD per week is our rough budget).

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    35 bids

    I need developer with more than a year experience in Solana and NFT for our big project. We'll teach more technology about our project, If you can create simple contract for mint, buy, sell, please send message. Only smart contract, not frontend and web3 We will teach that. If you are interested in this project, contact me right now. Thanks

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    The farms from above 3 swaps should be aggregate to my project. Users should be able to stake, unstake, withdraw their earnings. ***This is not building smart contracts.** When new farms is setup as adding the farm contract address and provide liquidity link to the .env file to display it (if the modal for that farm is included, which should be the case for all farm from 1inch, Sushiswap (Poly/ Eth), Quickswap, Dinoswap, as all farms using the same contract) The technical problems can be discussed on private chat. I don't want auto bid, please write "quickswap" in your bid so that I can know you read my post. Thanks.

    $250 - $750
    Sealed
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    5 bids

    ========I don't need designer.======= ======== I need rust expert .======= I'm looking for Rust expert who has good experience in Smart Contract using Rust on Solana Blockchain Network. I need very big smart contract. So if you are interested in this big project, please send simple smart contract for mint, buy, sell using Rust on Solana blockchain network. If you can't send this very simple contract, don't send message. Only you created, don't send other's contract. Thanks

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    8 bids

    Hello everyone! I'm looking for Rust expert on Solana Blockchain Network. You should have more than 3 years experience in Rust on Solana and Web3.js. I need new Smart Contract for stacking, farming. If you don't have experience in simple smart contract for mint, buy and sell, don't bid I'll check your skill and very simple smart contract created by you for mint, buy, sell It's very big project so as I said if you are not expert, don't send message. Thanks

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    Need a Smart Contract Created 4 days left
    VERIFIED

    I’m looking to hire a developer with solid experience in creating flash loans/smart contracts for a very particular purpose which I will explain further. MUST be fluent in Solidity and English. No exceptions.

    $17 / hr (Avg Bid)
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    22 bids

    I need you to have an advisory about a contract in the ethereum blockchain (mainnet) in order to understand what happened with some transactions. The smart contract is a fork of uniswap and it seems that an external contract extract the liquidity but we don't understand how. Please, if you have the knowledge to give to us that kind of explanation, drop here a message and we can talk as soon as possible, we need this urgently.

    $38 / hr (Avg Bid)
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    Smart contract 4 days left

    Hi! I wanted to ask you if you can help me out to write a smart contract using ethereum. I have a sole company in the Netherlands and I want to make a contract with a company in Uruguay to consultancy, but I'm not sure how we can use smart contracts to do this. Can you "translate" a common contract into a smart contract?

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    20 bids

    The farms from above 3 swaps should be aggregate to my project. Users should be able to stake, unstake, withdraw their earnings. ***This is not building smart contracts.** When new farms is setup as adding the farm contract address and provide liquidity link to the .env file to display it (if the modal for that farm is included, which should be the case for all farm from 1inch, Sushiswap (Poly/ Eth), Quickswap, Dinoswap, as all farms using the same contract) The technical problems can be discussed on private chat. I don't want auto bid, please write "quickswap" in your bid so that I can know you read my post. Thanks.

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    6 bids

    I need 1 page site with only one of the functions wonderland has, not all of them. I already have a logo for the site ! (this project is NOT a decentralized reserve currency in any way!-) This site will contain the ability to mint the native token of the site( which I have already created and posses) at the discount shown in return for the end user supplying one of the 5 assets/pairs ( USDC.e, WETH.e, AVAX, USDT.e, MIM) ( please see wl-mint for layout and wl-mint page for actually minting process) Based on the percent discount shown I would like a hidden percentage of that minting process to go to the wallet address of my choosing. I would also like if possible to have the ability to change the visible discount and the percentage I receive on the fly via some sort of web in...

    $4744 (Avg Bid)
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    23 bids
    Block Chain Developer 4 days left
    VERIFIED

    I need a blockchain developer for my project

    $517 (Avg Bid)
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    22 bids

    I need someone who has experience about hive chain

    $1361 (Avg Bid)
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    11 bids
    React Web3 Project 4 days left
    VERIFIED

    The dashboard looks a little complicated but its very simple just needs to show our BSC token, regular BSC and our nft.

    $19 / hr (Avg Bid)
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    27 bids

    Hello, We are looking for someone with experience in Solidity Smart Contracts ERC721 that can create a Full Audit of our Smart Contract. 1. Check code for Errors, Mistakes, Future Problems, Logic Issues. 2. Compile and Test Deploy on Rinkeby Successfully 3. Verify and Publish in Rinkeby Etherscan 4. Test all functions, whitelist, minting, flip state, change price, etc. Make sure everything works and it causes no logic issues 5. Create sample collection on Test OpenSea to see that minted item appears on opensea 6. SetBaseUrl test to make sure opensea is retrieving the data In summary, check that everything works well and that we will have no problems when deploying on mainnet. The Smart Contract is already READY and using OpenZeppellin so in theory it should have no issues but I wa...

    $609 (Avg Bid)
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    39 bids

    We want develop new blockchain and coin with mining and stacking features

    $10335 (Avg Bid)
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    7 bids

    a mint button functionality built in to connect with a smart contract for an NFT collection.

    $158 (Avg Bid)
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    19 bids

    Looking for a freelancer to developer a Smart Contract on ERC20. Background: Welcome to Clash Cards Champions! Our goal is to provide our users with the best trading card experience using NFTs and Play2Earn. The cards are based on the Moonriver blockchain and can be collected as NFTs (Non-Fungible Tokens). The cards have various degrees of unique designs and attractive images, which lead to powerful in-game combat attributes and high-value collectibles. Users can trade them freely on the NFT market, thanks to the true digital ownership promoted by blockchain games.

    $284 - $851
    Sealed NDA
    $284 - $851
    21 bids
    smart contract erc 721 3 days left
    VERIFIED

    I need to write a contract erc 721

    $2216 (Avg Bid)
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    28 bids

    We are seeking an experienced Rust Developer to create Smart Contracts for the Solana Ecosystem. The right candidate must be proficient in Rust and have one or multiple live smart contracts they can provide as proof of their work. We have a huge number of projects available for ongoing work throughout 2022 and beyond. If you also have experience with Solidity this is a bonus and we will take this into consideration during the hiring process. When applying for this role, please provide links to the live Smart Contracts you've developed on Solana. We have work available immediately and will be fast-tracking the process, so please apply quickly and make yourself available for an interview.

    $38 / hr (Avg Bid)
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    Looking for someone to create a bot that detects when new liquidity is added to an AMM (automated market maker) pool on PancakeSwap & Uniswap. The bot allows me to buy any newly added token from PancakeSwap and Uniswap in amazing speeds (up to zero seconds from the time of the listing). It is called "sniping". The bot works by: Connecting to the blockchain network, scanning for all mempool / pending transactions, finding and matching the liquidity add transaction of the token you are trying to snipe and then placing the buy order in the same block. Speed is important… MUST be fast! The BOT would essentially: - Scan the blockchain and find transactions based on certain criteria (pending on the block aka mempool). - Front-run (specific trade volumes, slippage and g...

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    1. Anyswap Integration we need to submit our BSC contract (destination chain contract) to use the Anyswap router option Using Anyswap No token burn, the bringing process is simple, lock token X on chain A ( source chain) from mint inherited token X on chain B. When bridge back from chain B from chain A , inherited token X on chain Bburn trigger release token X on chain A. Company BEP-20 address to make contract owner and where to send tokens: 0xcD9136A5fE06f2A805A505c812900d202551Feb9 2. Integrate LEDU Anyswap bridge into our staking website This is a simple reactjs app which supports wordpress. We will use it for the frontend for users to interface with the bridge and staking The page is hosted on our AWS Cloud. (we have an AWS engineer inhouse that can he...

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    We have a set of blockchain tasks to do. Our engineering lead has broken them down into smaller tasks (about 12 tasks) The first task is a simple blockchain task for an experienced blockchain engineer. Existing libraries/frameworks should be used. No need to re-invent the wheel. Task is to review the ERC20 smart contract and create a BEP-20 contract with similar features and add Staking capabilities. Total supply: use same number as for the ERC-20 0xc741f06082aa47f93729070ad0dd95e223bda091 Main code repo to use for work: All code is to be pushed to this repo for Audit by our team Company BEP-20 address to make contract owner and where to send tokens: 0xcD9136A5fE06f2A805A505c812900d202551Feb9 After the minting, close the contract completely. It should be publicly visible that the ...

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    I'm building NFT Website. I'm looking for a developer who has much experiences in solidity, web3.0, dao etc. Please feel free to contact me if you are good fit.

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    I need a staking dapp website with contract

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    BBC ETH Smart Contract ERC 721 NFT: - Mint - Whitelist - Reveal (delayed 2 days after mint) - Reserve (presale and public sale mint raffle) - Pre Sale of Genesis collection (1,000) and Public Sale of rest of collection (8,108) - 1% lifetime resale royalty to mint holder - 5% resale royalty to Founders - 3.5% resale royalty to community wallet for $CHAKRA token - 10% NFT mint royalty to community wallet - Breed function - ‘serum’ like BAYC (fork) ERC 20 Token ($CHAKRA) - [ ] Token ⁃ Burn ⁃ Mint ⁃ community wallet - votes, hierarchical ⁃ Change NFT Name ⁃ Staking (Chakra Collection) ⁃ Mint Buddha NFT ⁃ Whitelist - Slim Buddha - new NFT collection (costs 500 $CHAKRA) - [ ] Claim $CHAKRA - [ ] Chakra ‘genesis’ Buddha- earn 10 $CHAKRA daily x 10 years (Staking) only 100...

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    This project is for a Blockchain/web3 consultant that will help me understand and draw a more detailed plan on something that we wish to build.

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    Hello, We looking an expert on blockchain domain for create ( using open source or from scratch ) an marketplace for our NFT collection. As we meet lot of scammer and bad people, we will pay you when you will done the task. no upfront, no payment before. If you are not ok with this, please find other hirer. Thx you.

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    Hey Guys, We have a iOS app NFt marketplace that we made in swift. Our users are connecting via WalletConnect v1. And we have our buy and sell functions on our server and we are using the OpenSea-JS to submit the transactions. Our issue is that our users from our app need to be able to sign the transaction request in order for us to call the buy order using the OpenSea JS. We are looking for someone who has Web3 experience and also iOS development experience. We already developed everything from the wallet connect implementation to the OpenSea JS implementation. We just need someone that can make this work.

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    I need a script that will mint Solana using smart contract directly, not going trought mint engine or Magiceden.

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    If you are a developer and you have past experiences with creating nft websites, apply for the job I also need someone to create the smart contract

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    i need to get this done asap...

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    Need to build smart contract with smart chain If you are interested then will start

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