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Solidity Dev for 1 Function Ethereum Contract

$250-750 USD

Fermé
Publié il y a plus de 2 ans

$250-750 USD

Payé lors de la livraison
Looking for a Solidity Dev who can create an ethereum contract that will do the following: Allows the purchase of an item from Opensea and lists it for a set amount on Opensea, both in the same transaction. 1) The user will pass 2 variables to the contract: Opensea Item and Listing Price. 2) Execution of the contract will purchase the opensea item and will list it for the price entered, all in the same transaction. Must have experience with contracts and solidity, not looking for those with a learning curve.
N° de projet : 32163151

Concernant le projet

35 propositions
Projet à distance
Actif à il y a 2 ans

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35 freelances proposent en moyenne $605 USD pour ce travail
Avatar de l'utilisateur
Hi, I am an experienced block chain developer having vast knowlege of solidity. I have worked on many similar and complex projects before. I have good knowledge of routing and can easily set auto buy sell in the contract for your desired market place. Drop a message. Thanks Safi
$750 USD en 7 jours
5,0 (23 commentaires)
6,4
6,4
Avatar de l'utilisateur
Hello,I have read the job description and I am interested in this job. I have 8 years experience in developing products using Smart Contracts, Ethereum and Solidity. I have read your requirements and am ready to start working for you. • Attractive and unique front end •Functional backend with quick response time •Customer support even after developing a product is awaiting your response. My Portfolio: https://www.freelancer.com/u/AwaisChaudhry?w=f Regards,
$750 USD en 24 jours
5,0 (2 commentaires)
6,0
6,0
Avatar de l'utilisateur
✅Blockchain & Solidity & NFT Senior Developer✅ Hello respected client. Thanks for posting. I am happy to send my proposal on this project. I am a senior developer have 7+ years of experience in Blockchain, Ethereum, BSC, NFT, and TradingView Chart with modern, trend technology such as React, Vue, and Node.js. And also I have 5+ solidity experience in building smart contracts and forking DeFi such as pancakeswap, goosedefi, etc, and developing NFT Random Art Generation and Minting Dapp. I have seen your project's requirements carefully. I am ready to start your project immediately and I really can complete your project perfectly in a short period. And fortunately, I have completed a similar project for another client recently so that I feel confident about this project and I think that I'm the right person for this work because I have many good projects that I have accomplished. I would love to work with you for long term. I will show you my ability. Please contact me for more discussion so we can start the project right now. Let's finish this task ASAP Best regards!
$630 USD en 7 jours
5,0 (77 commentaires)
6,0
6,0
Avatar de l'utilisateur
I have been working in the Crypto Currency domain for the last 4 years and have sound knowledge of coin, Ethereum, Polkadot blockchain along with Defi, and NFT knowledge. I am working on 3 parallel Defi and NFT projects in this domain one being creating a lending and borrowing platform by staking the top 10 ERC20, NFT, AltCoin. A very ambitious and promising project where we have a governance mechanism and also a separate token for voting rights. My specialization lies in C#, React, Angular and NodeJS, python, technologies, and I am also well versed with coding in Solidity and RUST. I have written intelligent contracts and can develop Security Tokens as well. Last but not least, we are also working on the blockchain-based replica of traditional debt collection applications. I am looking forward to working with you.
$500 USD en 7 jours
4,9 (8 commentaires)
5,1
5,1
Avatar de l'utilisateur
Hi, I read your work and I am very interested in your work. As a blockchain developer with 4+ years of experience, I can assure that my skills will not let you down. Please check my profile and me you can know my skills in short time. I look forward to wroking on this project with you. Thanks.
$1 000 USD en 7 jours
5,0 (6 commentaires)
5,1
5,1
Avatar de l'utilisateur
Hi, I read your project detail and understand what you want. I am a blockchain expert and I have developed many smart contracts, defi sites and NFT marketplaces so that many clients can earn the big money. Now I wanna work with your project and I can start to work right now. I am always on your side and make finger crossed for your business. Waiting for your reply. Kind regards.
$630 USD en 7 jours
5,0 (3 commentaires)
4,0
4,0
Avatar de l'utilisateur
Hi, dear! Hope you are doing well. Reviewing your requirement, I noticed that you are looking for a senior Ethereum/Solidity developer. I have read your job carefully and feel confident to deliver a perfect solution for you. Your idea is clear and attractive for me. I have 9+ years of experiences in building this kind of project. I will skip my skills and working history because you can see on my profile. Let’s discuss more in details over the chat. Looking forward to hearing from you. Best regards! From a Senior Web Developer, Alkalina~
$630 USD en 7 jours
3,0 (9 commentaires)
5,6
5,6
Avatar de l'utilisateur
Dear Client I can build smart contract with features you want. I have rich experience in Defi/Dex, bitcoin,Ethereum, bsc,fantom,polygon, ICO, NFT, Dapp and blockchain game for 2 years. and also good experience in Go-Ethereum for a years. Let's chat with me for understanding project deeply for now. Thanks.
$630 USD en 7 jours
5,0 (4 commentaires)
3,5
3,5
Avatar de l'utilisateur
✋ Hi I am the right developer you are looking for. I m a blockchain expert and have much experience in opensea. I'm interested to hear more about your project. If you award me the project I'd be very happy to discuss this further and get started for you as soon as possible. I will do my best to meet your need. Best regards.
$630 USD en 7 jours
5,0 (3 commentaires)
3,6
3,6
Avatar de l'utilisateur
I am a Trading Expert, Forex & Cryptocurrency developer and other Software Developer with more than 5 years of experience in all crypto & forex coding. I am well skilled and experienced with Smart Contract, Solidity, APIs, Crypto Trading BOTs (Bybit, Binance, Bitmex etc.), Metatrader (MT4/5) with various EA & indicators, pinescript, CTrader, Sierra Chart, Ninjatrader (NT7/8), and Amibroker. I have done a lot of work on all the listed trading platforms with reviews to back it up and will be honored to help you with your requirements. Kindly share more details of your project with me over chat. Thanks
$630 USD en 4 jours
5,0 (1 commentaire)
3,3
3,3
Avatar de l'utilisateur
Hello Client. Cryptocurrency and blockchain solutions are revolutionizing how industries operate. Scopic is fully on board with this revolution and has a team of experienced developers with in-depth knowledge of blockchain technology and cryptocurrency. We can build NFTs, DAPPs, custom cryptocurrencies, and help with any other requests you may have. Scopic provides a complete cryptocurrency creation service, so you can go from idea to custom crypto, leveraging the benefits of layer 1 blockchains such as high levels of security and fast transaction speeds at significantly lower costs than developing your own blockchain. Our Cryptocurrency, Blockchain and NFT Development services include: - Cryptocurrency exchange development - Cryptocurrency and blockchain wallet development - Cryptocurrency coin and token creation - ICO website development - Smart contract development - Blockchain app and DAPP development - Blockchain consulting - NFT marketplace design and development - Decentralized Finance (DEFI) development - Custom cryptocurrency, blockchain, NFT app development, and more. -Other skills REACT/REDUX/HOOK NEXT VUE.JS GraphQL WordPress Laravel Django
$630 USD en 7 jours
5,0 (2 commentaires)
3,3
3,3
Avatar de l'utilisateur
Hi there, Through your job description, I can see you are looking for a developer for Smart Contract on BEP20. This is Oleksii, and a Blockchain developer, I have extensive experience and knowledge in Blockchain, Smart Contract, Crypto token(BEP20, ERC20, ERC721, ERC1155), Solidity, NFT marketplace. So I am confident I am able to finish this job in time. Please message me, then let's discuss further. Look forward to hearing from you. Best regards
$400 USD en 3 jours
5,0 (1 commentaire)
2,3
2,3
Avatar de l'utilisateur
Hello. I have read your project requirements CAREFULLY. I have 5+ years of experience in creating ethereum Blockchain, smart contract, Cryptocoin, wallet, whitepaper marketing, ICO promotion, etc rather than that we have great experience for developing other cryptocurrencies with the exchange, Initial coin offer, Smartoken system mining & fundraising of the coin. - Cryptocurrency Exchange Site (based on ETH, BTC, NEO) - ICO (Ethereum, Waves) - ERC20, BEP20, Solidity, Smart Contract, Web3, Truffle - Cryptocurrency (Bitcoin, Ethereum, NXT, Vertcoin, NEO, Monero) - Cryptocurrency Trading, Lending Bot (Binance, Bittrex, Poloniex, CoinBase) I'll provide you with high-quality work, and reasonable rates. Please come to chat for discuss in more details. I'm ready to start your project now. Thanks & regards
$630 USD en 7 jours
0,0 (0 commentaires)
0,0
0,0
Avatar de l'utilisateur
Hello. Hope you are doing well. I was impressed by job description and I believe I can a good fit for your project. I have about 2 years of experience in Blockchain and solidity, rust. I am a senior back-end developer and started to learn C/C++ since 12 years old I would like to discuss more via chat so that I can get more information about your project in detailed. Thank you
$630 USD en 7 jours
0,0 (0 commentaires)
0,0
0,0
Avatar de l'utilisateur
Hi, I specialize in Smart Contract development by using Solidity. I've done lots of jobs on it so I would like to work on your project. I ran across your job detail extremely carefully and understood what you want. I've rich experience in Opensea. So I am sure I can do your project well. I hope you share more detail via chat. Thanks.
$630 USD en 7 jours
0,0 (0 commentaires)
0,0
0,0
Avatar de l'utilisateur
⭐⭐⭐⭐⭐ Solidity / smart contracts expert ⭐⭐⭐⭐⭐ Hi there! Thanks for your posting and I understand what you want exactly. I will do it in 2 hours for $300. Please let me know if this works for you. I've attached short brief of myself. I have worked on many dApps and NFT marketplace based on Ethereum Blockchain. I just finished deployment of NFT minting web sites and it was built with React. I have extensive several years of experience in developing and writing Smart Contracts for Ethereum Blockchain. Now expert of Tokenomics(ERC20/ERC721) and often used web3 to integrate several smart contracts to different blockchain to frontend design. Thanks for reading to the end kindly. Hope to hearing from you as soon as possible.
$300 USD en 1 jour
0,0 (0 commentaires)
0,0
0,0
Avatar de l'utilisateur
Hello, I am a smart contract expert having completed many contract job so far. I am sure I can deploy solidity which buys item and post it for sale in opensea. Ready to start to work right away. Thank you.
$630 USD en 7 jours
0,0 (0 commentaires)
0,0
0,0
Avatar de l'utilisateur
Hello Greetings of the day! I can start working right away. I read your description and have rich experience in Ethereum, Blockchain, Smart Contract, solidity, so i can finish your project in short time I’m looking forward to hearing from you soon. Thank you for considering my cover letter. Marko
$630 USD en 7 jours
0,0 (0 commentaires)
0,0
0,0
Avatar de l'utilisateur
We are senior Blockchain/Web3, Solidity EXPERT, with rich experiences in developing Smart Contract, NFT MarketPlace, Pancakes Wap(Uniswap)Sniper bot, Defi. Let's start a private chat and your dedicated communication manager will show you similar project examples and help you understand the latest technology trends best for your project. 100% Refund: Our company believes in a transparent payment policy i.e Pay us if you like our work, otherwise, you don't need to pay! Regards, ForumCube P.S: We won't ask you to pay till your satisfaction!
$1 000 USD en 7 jours
0,0 (0 commentaires)
0,0
0,0
Avatar de l'utilisateur
HELLO DEAR EMPLOYER, First receive warm greetings, and hoping you are good, i welcome you to the home of Amazing services and quality. FULL BLOCKCHAIN DEVELOPER EXPERT IN NAMED SKILLS, OVER 18 YEARS OF EXPERIENCE, After KEENLY reading your description and being in possession of all CLEARLY STATED REQUIRED SKILLS as this is my area of PROFESSIONAL SPECIALIZATION having the above QUALIFICATIONS, i hereby humbly request you to consider my bid for QUALITY and PROFESSIONAL work. ###No Upfront payment// No timeline & Quality Excuses// Unlimited Revisions// Milestone payment STRICTLY after 100% Client Satisfaction### Message Me We Discuss More About The Project. THANK-YOU.
$630 USD en 7 jours
0,0 (1 commentaire)
0,0
0,0

À propos du client

Drapeau de UNITED STATES
Durham, United States
4,8
8
Méthode de paiement vérifiée
Membre depuis juin 27, 2015

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