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.

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    80 jobs found, pricing in GBP

    We need a decentralised eSports platform combined with fantasy tournaments,only teams with good experience in blockchain technology may bid, companies near NCR region should bid

    £8849 (Avg Bid)
    £8849 Avg Bid
    10 bids

    I want to create and deploy smart contract to ETH

    £410 (Avg Bid)
    £410 Avg Bid
    42 bids

    Looking for a developer who is comfortable with Dynamic NFT development and able to integrate Chainlink Keeper for smart contract automation. Developer also needs to be skillful in frontend React development as user experience for the minting site is important. Required Skill: React, IPFS, Chainlink, NFT development

    £423 (Avg Bid)
    £423 Avg Bid
    45 bids

    Major modification in the blockchain project is required, Demo must be given through Anydesk, UI must be developed representing charts. Maximum time duration is 7 days. Only committed personnals contact me. Make sure ur freelancer account is valid. The only payment method would be through freelancer account.

    £474 (Avg Bid)
    £474 Avg Bid
    18 bids
    ERC-20 token code audit 6 days left
    VERIFIED

    We have a ERC-20 based token, which needs a pre-launch audit. Scope of work - code accuracy - proof of stake readiness - code fulfills development requirements -correction of errors -confirm launch readiness We assume 2-3days work the max. Please share previous experience

    £385 (Avg Bid)
    £385 Avg Bid
    15 bids

    I want a blockchain expert who is very good at olympus dao platform. I need some smart contract changes and current frontend integration. Please apply if you are a good fit for this project. Thanks

    £937 (Avg Bid)
    £937 Avg Bid
    18 bids
    Long Term NFT Minting Project 6 days left
    VERIFIED

    Requires a specialist who is able to develop a token and a smart contract. We need a specialist for not just one project, we launch about 10 projects a month and we need a specialist for each of them, if we can work with you, we would be glad to have a long-term cooperation. Now we are ready to discuss this project and start working. Firstly this role will require paid test and it would be simple smart contract. Please see attachment file and bid with your creative answers. I will hire 2 candidates with right understanding. Please start your bid with "contract expert" Thanks.

    £21 - £41 / hr
    Sealed
    £21 - £41 / hr
    46 bids
    Rust Expert Needed 6 days left
    VERIFIED

    Seeking RUST developer to fix error of exciting staking project! Security-orientated team. Pentesting skills would benefit the project as a whole but not nececary. Strong RUST development skill required.

    £16 - £31 / hr
    Sealed
    £16 - £31 / hr
    36 bids

    DO NOT BID UNLESS YOU ARE A SOLIDITY DEVELOPER FROM IASI, ROMANIA OTHERWISE I WILL REPORT YOU. Salutare. Caut un developer in Solidity care poate face un token custom si care sa fie dispus sa ne intalnim fata in fata pentru a discuta detalii despre proiect.

    £414 (Avg Bid)
    £414 Avg Bid
    19 bids
    Smart Contract Code Reviews 6 days left
    VERIFIED

    Looking to bring someone to do quick smart contract code reviews and fill out a form with the results. Code reviews will take 30 minutes to an hour and we're looking at about 20 reviews a month.

    £355 (Avg Bid)
    £355 Avg Bid
    105 bids

    Its for an NFT related coding for a new website. Smart contract process api with a nft market, blockchain api coding, payment gateway with crypto

    £737 (Avg Bid)
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    60 bids

    Hello, i need a site with a like. The system should be able to work manually and automatically Where can we connect api for Kyc and Aml He will be able to attract prices through a site that we will provide. For the following period, money and coin options will be added I want to build a site with a fairly high level of security for the user and the company. Merhaba, benzeyen bir siteye ihtiyacım var. Sistem manuel ve otomatik olarak çalışabilmeli Kyc ve Aml için api bağlayabileceğimiz Bizim vereceğimiz bir site üzerinden fiyat çekebilecek. İlerleyen dönem için, para ve coin seçeneği eklenebilecek Kullanıcı ve firma için güvenliği oldukça yüksek bir site yaptırmak istiyorum.

    £1289 (Avg Bid)
    £1289 Avg Bid
    36 bids

    Develop BEP20 token smart contract with taxes and upgradable. Requirements> Share your portfolio in comment bscscan and similiar >In supply : 1b >Total tax: >>Development wallet: 4% >>Marketing wallet: 4% >>Reward wallet: 2% >>Trezor wallet: 2% Participate: >>send smart contract to test >>>1st payment >>after its deployed on mainet New tasks >>> develop dapp with other team members >>>>2nd payment - per hour or per project

    £132 (Avg Bid)
    £132 Avg Bid
    37 bids
    Blockchain Expert Needed 6 days left
    VERIFIED

    Hi I need a Blockchain expert who is well versed in the mempool and transactions within the mempool. The selected freelancer should have excellent working knowledge of how transactions are mined by miners on the BSC network and how mining algorithms work. Your main task is helping me to understand how transactions are placed in the block and how I maximise my chances of selling success. This is a simple job for someone that is an expert in this field.

    £154 (Avg Bid)
    £154 Avg Bid
    47 bids

    ** NOTE: Please only bid if you have read through the job ad and understand what needs to be done, failure to understand upon reading the job ad your bid will be rejected ** I am looking for someone to develop NFT Generator Web App where users can add layers and upload traits which will then generate NFT's with Metadata (Ethereum, Polygon, and Solana) in JSON files. A quick overview of how the web application will work: • Users will add layers of the NFT’s they are looking to generate, e.g. background, head, eyes, nose, mouth. • Users would then upload the traits (image files) of each type of layers, e.g. 4 different backgrounds, 4 types of heads, 6 types of eyes, 2 types of noses, and 4 types of mouths. • Once traits are added under each layer, the appli...

    £3306 (Avg Bid)
    £3306 Avg Bid
    49 bids

    Hello. Our team is currently looking for the right person to our next big project. We are looking for someone capable of creating a CS:GO Skin / Crypto Casino for us. We're also going to need a fulltime web developer for our project, so this won't be a one time job, it's a full time job that pays well. Together with my business partners, we're aiming for a completely new industry - Online Gambling. All of us have a fair bit of experience in the field overall and we hope that you do aswell. What we need: - A fully functional CS:GO / Crypto Casino - Functional Deposits & Withdrawals - Games such as roulette & crash - And much more Good examples would be and www.csgoroll.com. Please feel free and have a good indepth look of the quoted sites and fu...

    £7606 (Avg Bid)
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    30 bids

    I need a smart contract deployed on remix that allows me to send coins to a personal address

    £376 (Avg Bid)
    £376 Avg Bid
    67 bids

    Hi there I am looking for someone full time to join our team to help in our discord your role will vary depending on your knowledge please let me know your answers between 1-10 Tennis Knowledge - 1/10 - NFT knowledge - 1/10 Discord - 1/10 to the area you are most confident please tell me your experience please be honest depending on your answer we will give you a certain role $3 per hour (non negotiable) this is the discord - please message Sabrina in it to make you admin if you want to join payments will be ONCE A WEEK ON FREELANCER (I can't do it daily as I have a team of over 50 so PLEASE dont ask for it daily) THANKS KYLE

    £2 / hr (Avg Bid)
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    12 bids
    Opensea Collection Bid 5 days left
    VERIFIED

    Hello I would like someone to assist me in create a node js application to make collection bids in Opensea The function will take , the collection slug , price and duration as inputs and successfully make the offer. The perferred way is through the RPC node direcly rather than through the seaport API. To be successful for this job please reply answer these you questions: 1. Can you successfully make a collection bid? 2. Will you do it through the RPC node or Seaport API? thank you

    £281 (Avg Bid)
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    16 bids

    I need to fetch data from a token from Stellar Blockchain and when the data was fetched, it needs to be filtered and after with the filtered data, it needs to submit a transaction. I need this to be all automated with my configuration and just start it and runs for 24/7 without stop. I ll give more details in private.

    £135 (Avg Bid)
    £135 Avg Bid
    42 bids
    NFT project 5 days left
    VERIFIED

    Done with designed the nft need help with technical issues

    £25 / hr (Avg Bid)
    £25 / hr Avg Bid
    79 bids
    NFT Creation Designer 5 days left
    VERIFIED

    We need NFT Creation Developer, Sk!P3 dvskha

    £85 (Avg Bid)
    £85 Avg Bid
    19 bids
    Smart Contract Code Audit 5 days left
    VERIFIED

    Looking to bring someone to do quick smart contract code audit and fill out a form with the results. Code audits should take 30 minutes to an hour and we're looking at doing about 20 audits a month. Must be familiar with Smart Contracts and the following attributes: Contract Ownership Airdrops and Backdoors Libraries and Forks Multi-Sig implementations Tokenomics

    £17 / hr (Avg Bid)
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    42 bids

    I want to trade by TP-SL mode in Phemex (crypto exchange like binance or bitmex). But I don't want to pay taker fee for trading fee. When I set order-price, order-money, TP price, SL price, then trading bot should find prices (near the prices I set before) that can be considered as maker position. In Phemex, when trading as maker position, then they give traders maker-rebate, and traders don't have to pay taker fee. I'm finding trading expert who has a lot of experiences for maker position trading. So I don't want experts who don't know about maker or taker concept.

    £509 (Avg Bid)
    £509 Avg Bid
    19 bids

    I am looking for a blockchain developer for my NFT project. It is start. In the future, I will make you busy.

    £851 (Avg Bid)
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    36 bids

    I am looking for someone who can work on NFT and related services

    £472 (Avg Bid)
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    23 bids

    Need code on how to mine monero on AWS, something similar to this:

    £135 (Avg Bid)
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    15 bids

    Hi We need an Blockchain expert to help us make our game compatible for web3.O and add few NFT elements.

    £28 / hr (Avg Bid)
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    40 bids

    I need talent bridge & mulitsignature expert in blockchain side.

    £635 (Avg Bid)
    £635 Avg Bid
    28 bids
    Nha Coin usdt -- 2 4 days left
    VERIFIED

    Hi I need only person who use nha coin wallet because need help to withdraw. if anyone use please send us a message only NHA COIN Deposit is working fine but withdraw is only show to audit can anybody explain what happen or complete this project successfully.

    £338 (Avg Bid)
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    4 bids

    The pool already running and config as PROP Auto generator now: FPPS or PPS+ auto generator payments method configure and setup If you have done it before please massage me and we talk about it. Requirement: ****Experience Done it before - Must be Expert in YIIMP mining pool.**** Please Don't Bid if you had no experience in YIIMP. ***Enable to start project in12hour. **** No milestone **** Full Payment after checking project. ****Max budget : 80$**** Auto bot BID & Higher BID will be removed.

    £63 (Avg Bid)
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    7 bids

    Building a test network to run various application in hyperledger environment. Will need a technician to manage and administer this on a monthly base.

    £123 (Avg Bid)
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    14 bids

    Hi i want to make an crypto wallet exchange and a crypto coin so i need a good team or individual who can handle the work

    £1757 (Avg Bid)
    £1757 Avg Bid
    21 bids
    Nha Coin usdt 4 days left
    VERIFIED

    Hi I need only person who use nha coin wallet because need help to withdraw. if anyone use please send us a message only NHA COIN Deposit is working fine but withdraw is only show to audit can anybody explain what happen or complete this project successfully.

    £355 (Avg Bid)
    £355 Avg Bid
    6 bids
    NFT developer 4 days left
    VERIFIED

    Looking for NFT developer for my website

    £1247 (Avg Bid)
    £1247 Avg Bid
    49 bids

    Context: 1)I have 10,000 NFT Images already created 2)I have 10,000 Metadata files already created What i need: 1)I need someone to create a minting DApp for a website which is compatiable with opensea 2)The smart ethereum contract will need to split 25% and 75% of the intial sale price between two wallets and also split any future royalties between two wallets 50/50. You will need to help guide me through the launch process that you think will be good and must have worked on this type of project before and also happy to help with future development requirements. At the moment all i am after is bids so i can see how much it will cost, please confirm by saying "i understand".

    £516 (Avg Bid)
    £516 Avg Bid
    81 bids
    Building a Web3.0 Platform 4 days left
    VERIFIED

    Need solidity smart contracts written. Need a web3.0 connection to wallet connect, metamask and other wallets. Need website to allow escrow. Will say more after non-disclosure

    £1827 (Avg Bid)
    £1827 Avg Bid
    79 bids

    I wonder if you can develop a web platform with the following requirements: The website (platform) should be developed to AUTOMATICALLY RUN and sell the Proof of Priority registration services by making the registrations on blockchain. It will work as follows in the user's view: 1- The user makes the registration on the Site - click on the "Register" menu. 2- When accessing the platform (site) again, access through the login menu. 3- The user makes the purchase of credits via PayPal (or credit card) required for registration. 4- Then informs the data of the record holder, type of record, title and description. 5- The platform AUTOMATICALLY checks if the user has enough credits for the service. 6- Then it releases the user to continue the service request. 7- The user selects ...

    £211 (Avg Bid)
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    8 bids

    Need code on how to mine monero on AWS, something similar to this:

    £131 (Avg Bid)
    £131 Avg Bid
    15 bids

    We need someone to help code some algos for our tradingview trading site. We need the algos to be able to use webhooks to trade from a user account. Please reply if you have worked on such projects.

    £443 (Avg Bid)
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    31 bids

    Looking for Blockchain developer for NFT website. More details in chat

    £1394 (Avg Bid)
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    47 bids
    Trophy icon BSC 20 Payment 14 hours left

    please go to - connect your metamask and check out the subscriptions that can be bought using the BSC20 Token $AET. There are 3 subscription levels, all three should be working and executable on Windows PC, Mac OS, iOs and Android always using Metamask plugin and/or Metamask App Browser (if mobile).

    £209 (Avg Bid)
    Guaranteed
    £209
    5 entries
    Need Airdrop Telegram Bot 3 days left
    VERIFIED

    FEATURES = Airdrop Task, Balance, Referral System, Withdraw Button, Bonus Button, Presale Button, Spreadsheet. Default airdrop bot steps: Bot sends all airdrop information Bots can send captchas image/math when users join Airdrop all tasklist Then the user presses the "Join Airdrop" button. Bot asks: User Must Join Telegram Channel & Group Bot sends all airdrop tasklist Bot ask submit your username BEP-20 crypto wallet address or other wallet address Bot ask did you completed all social media task Get referral links to invite users and get more rewards.

    £162 (Avg Bid)
    £162 Avg Bid
    8 bids
    New NFT Game 3 days left

    I am going to make a fantastic NFT Game Website on my own. Actually looking for a developer who has experience in building NFT Games before. Here is a NFT game "Dragonary". My brother likes this game very much, but it is desktop app and it has got a problem in its logic. I'd like to have a wonderful game. Please send me your proposals if you are interested in my project. Do not waste my time. I hope to talk with only who has understood my project and got my game's general logic. Please write down your opinion about this game on your proposal or simply append the url or video of your similar project. Will share more details via chat and will start working immediately.

    £1809 (Avg Bid)
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    30 bids

    i want someone to build a 9gag style page that will allow people to connect with a web3 wallet and post memes, upvote,downvote,comment and share their post and few more things .

    £174 (Avg Bid)
    £174 Avg Bid
    42 bids
    Upload my NFT's on Opensea 3 days left
    VERIFIED

    I have approx 5000 NFT which has 8 original images and 4672 Other Images. also, I already created metadata and uploaded it on Pinata Cloud. so just want an experienced blockchain developer who can create a smart contract and upload it ETH blockchain. where 8 original images will be always on top

    £22 (Avg Bid)
    £22 Avg Bid
    10 bids

    We need professional solidity developers who work in our project , our project have to need new solidity developers for better chain and better utilities

    £6 (Avg Bid)
    £6 Avg Bid
    1 bids

    Our team based in US are gonna add two Golang developers for some big project. Payment is on Hourly rate and it is $30~$45. Please apply to this job if you are affordable this rate and it is one year contract. Please attach your Resume with your experiences in Golang. Thank you.

    £31 / hr (Avg Bid)
    £31 / hr Avg Bid
    28 bids

    I wonder if you can develop a web platform with the following requirements: The website (platform) should be developed to AUTOMATICALLY RUN and sell the Proof of Priority registration services by making the registrations on blockchain. It will work as follows in the user's view: 1- The user makes the registration on the Site - click on the "Register" menu. 2- When accessing the platform (site) again, access through the login menu. 3- The user makes the purchase of credits via PayPal (or credit card) required for registration. 4- Then informs the data of the record holder, type of record, title and description. 5- The platform AUTOMATICALLY checks if the user has enough credits for the service. 6- Then it releases the user to continue the service request. 7- The user selects ...

    £739 (Avg Bid)
    £739 Avg Bid
    46 bids
    simple dApp for Algo? 2 days left
    VERIFIED

    We need to build a dApp that will let us (or an authorized user) select items to lock up for another person to be able to come claim. Should be able to select an available ASA token or ASA NFT and lock it for another user by either wallet address OR if a wallet holds a certain ASA (NFT) (assign X asa to X wallet address, OR assign X ASA to holder of X ASA) User that locks the items should be able to see when claimed and by what wallet, or be able to cancel at anytime (in case of error or limited time offer) it's should stay locked to claim until claimed or canceled by the person that locked it User would come to app, connect wallet and see if they are holding anything they would get a reward for, and if so, then they could claim it by signing contracts and having item opted in an...

    £264 (Avg Bid)
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    32 bids

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