Smart Contracts Jobs

Smart Contracts are a way of securely exchanging digital assets such as money, services, and goods. With this type of smart contract, both parties can have flexibility when it comes to managing their business and legal agreements. Smart Contracts allow two parties to set specific rules and obligations that are enforced through code on the blockchain. A Smart Contracts Expert can be hired to manage the development process from conception to implementation of a client's own Smart Contract.

Here's some projects that our expert Smart Contract Experts have made real:

  • Creation of unique DeFi capabilities including a transfer tax with certain maximum fee functions across different tokens.
  • Done for clients, the human-readable storage of vital information onto an immutable blockchain for safekeeping.
  • Designing peer-to-peer energy trading networks suited for use on Solidity blockchains.
  • Projects utilizing Bluetooth devices which make up a custodial wallet and its respective smart contract.
  • An innovative NFT Marketplace that allows users to engage in lazy minting capability.
  • Digital game creations with Algorand smart contracts guaranteed to deliver fair winnings upon completion.

In conclusion, any foray into blockchain technology with the aim of exchange or preservation of assets requires extensive experience in coding and developing secure trustless systems to ensure successful deployments of chains and contracts through its life cycle. With our talented community of Smart Contract Experts at Freelancer, any client can quickly hire experts to develop their custom project from scratch as long as their ideas are tangible and client can explain clearly what they require. We invite you to post your own project on Freelancer and let our experts help you achieve success!

From 21,656 reviews, clients rate our Smart Contracts Experts 4.92 out of 5 stars.
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    21 jobs found, pricing in USD
    Casino betting site 139 days left
    VERIFIED

    I'm looking for a website with casino games such as BC.game. Although I don't have a specific list, I do have some general ideas as to what the site should feature. I'm expecting the number of users on this site to be more than 500. My team needs to be able to create a secure website, where all user data and banking information is kept safe. The betting system needs to be fair and accurate. I'm also looking for a custom built software that allows users to easily make transactions using all cryptocurrency and my team should also be able to handle any customer service or support related issues that may arise. As this is my first time venturing into online gambling, I'm open to suggestions as to how the website should be designed and how it should generate revenue.

    $5 / hr (Avg Bid)
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    8 bids

    We want to build a script or explain a solution for dynamically calculating the buy / sell taxes of any valid ERC20 contract. Essentially user inputs a ERC20 token contract, how would we be able to calculate the buy / sell taxes of that contarct and every other erc20 contract? We want a "one fits all" solution. Skills and Experience: - Proficiency in Solidity programming language - Experience with ERC20 contracts and token creation - Knowledge of advanced security measures for smart contracts

    $37 / hr (Avg Bid)
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    15 bids

    Hello. We are looking for Blockchain Development companies who are in a position to develop plenty of crypto projects. We are a network where we want to attract new crypto projects for fundraising. For more details, let's have a chat.

    $16 (Avg Bid)
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    I am looking for a skilled blockchain developer to help me test the alpha version of my dapp before its launch. The dapp is built on the Ethereum platform and I need someone to specifically test the user interface functionalities. The project needs to be completed as soon as possible. Skills and experience required: - Strong knowledge and experience in blockchain development - Proficiency in working with the Ethereum platform - Experience in testing user interfaces - Attention to detail and ability to identify and report any bugs or issues - Unit test of projects carefully - Report detailed via document

    $18 / hr (Avg Bid)
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    25 bids
    IDO Launchpad 4 days left

    I am looking for a freelancer to provide IDO launchpad services with a timeline of 1-3 months. The services needed include technical development, including source code, admin panel, whitelisting-blacklisting, private and public sale, sales will have tier formatter . I have no specific technical requirements or features, so I am open to suggestions from the freelancer. The end goal is to have an IDO launchpad equipped with all the necessary features and set up correctly. If you think you have the skills and experience to complete this project successfully, please apply

    $7909 (Avg Bid)
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    We are looking for a front-end and smart contract developer to help with contracts for our upcoming NFT project. Need to be skilled and have worked with erc 721 format before. Please only apply if you have proof of previous work you can provide. Thanks Github source:

    $4029 (Avg Bid)
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    I have a project for you - to rewrite my Node.js app of about 500 lines into Rust. The purpose of the rewrite is to improve performance, so the entire code needs to be rewritten. I need this done within a week, so I am hoping for someone with expertise and experience in both Node.js and Rust who can complete the project quickly. If you're up for the challenge, please reach out and let me know! Please no time-wasters! Idk why, but people are just asking for the code when disappear :/ pretty annoying.

    $230 (Avg Bid)
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    17 bids

    I am looking for a skilled developer to create a SWAP option for our new token v.s USDT (ERC-20). The purpose of this SWAP option is to attract new investors to our token. Project Requirements: - Develop a SWAP option that allows users to exchange our token for USDT. - The SWAP option should be built on the ERC-20 blockchain. - Implement necessary security measures to ensure the safety of the SWAP process. - The SWAP option should be user-friendly and intuitive. Ideal Skills and Experience: - Proficiency in blockchain development and smart contracts. - Experience with ERC-20 token development and integration. - Knowledge of liquidity pools and decentralized exchanges. - Strong understanding of security protocols and best practices. Timeline: - The completion of this proj...

    $1713 (Avg Bid)
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    Create smart contract 3 days left
    VERIFIED

    Smart Contract Creation on Ethereum 0xb69edbD0527F448b650676C7085E15a7422791c5 Same contract on eth Name change total supply change - 10M Fixed tax Tax not modifiable Experience with stealth launch HTML experience

    $491 (Avg Bid)
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    53 bids

    1. User Authentication: • Web3 Login: Users can log in securely using their Web3 wallet, ensuring a decentralized and trustless experience. • Gmail Login: For added convenience, users can also log in using their Gmail accounts. 2. Sports cricket Match Listings: • The platform will offer a comprehensive list of sports matches across various categories, ensuring a diverse betting experience. 3. Live Score Integration: • Real-time score updates will be sourced through APIs, providing users with the latest match information. 4. Betting Functionality: • Users can place bets with fixed amounts in BTC, ETH, or USDT, ensuring simplicity and consistency in wagering. 5. Currency Support: • The platform will support multiple cryptocurrencies, including BTC, ET...

    $1033 (Avg Bid)
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    I am looking for a skilled developer to create a betting website using Ethereum Blockchain. The ideal candidate should have experience in developing similar projects and be familiar with Ethereum Blockchain technology. Betting Options: - The website will primarily offer sports betting options, allowing users to place bets on various sporting events. Website Features: - I am open to suggestions and would like the developer to propose specific features and functionalities for the website. - The developer should have a strong understanding of the betting industry and be able to provide recommendations for innovative and user-friendly features. Design Assistance: - I am in need of full design assistance for the website. - The developer should have expertise in web design and be able to crea...

    $758 (Avg Bid)
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    25 bids
    Fix Bep20 token contract 2 days left
    VERIFIED

    I am having an issue with a Bep20 token contract not functioning as intended. It collects tax on sell, but it should also collect tax when buying tokens. I have the source code for the token contract, I just need the issue fixed.

    $26 (Avg Bid)
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    6 bids

    I am looking for a blockchain integration developer who can seamlessly integrate Tron blockchain with our front-end system and smart contract. Skills and experience required: - Proficiency in Tron blockchain platform and its integration with front-end systems - Strong understanding of smart contracts and their implementation - Experience in creating and deploying smart contracts on the Tron blockchain - Expertise in transaction verification and ensuring the security and integrity of the blockchain network - Knowledge of token creation and other functionalities of smart contracts is a plus The main functionality we are seeking from the smart contract integration is transaction verification. We want to ensure that all transactions on the Tron blockchain are securely and accurately verifie...

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    11 bids

    Develop a decentralised cricket betting website with help of blockchain

    $310 (Avg Bid)
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    3 bids

    I'm looking for a full stack blockchain developer to create the algorithm and all logic for a slot machine to work in the Solana Blockchain! All webdesign/arts/drawings (figma) I'll provide, I just need the smart contracts and connections to be done by you/your team! We can discuss more details about the features/bonus/payout and etc of the slot machine.

    $512 (Avg Bid)
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    47 bids

    Project Title: Smart contract running test Requirements: - I am looking for a freelancer who has experience in testing smart contracts, specifically for the "Other" blockchain platform (bnb chain). - The ideal candidate should have expertise in integration testing methods for smart contracts. - The primary goal of this project is to evaluate the performance of the smart contract. - The expected outcome of the test is to assess the efficiency, speed, and scalability of the smart contract. - The freelancer should be able to identify any potential bottlenecks and suggest improvements for optimizing the contract's performance. Skills and Experience: - Proficiency in smart contract testing on the specified blockchain platform (). - Strong knowledge of integration testing method...

    $296 (Avg Bid)
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    Only Bif if you are experienced blockchain developer. I am looking for an experienced Full-stack Developer to guide our team of engineers on a specific project. YOU should be able to guide engineers remotely. We use react, thirdweb and need to implement token sale, NFT sale for now. Specific areas of web development that we need guidance in include both front-end and back-end development. The ideal candidate should have extensive experience in Full-stack Development and be able to provide clear guidance and instructions to our team. The timeline for this project is less than 1 month, so the candidate should be able to work efficiently and effectively within this timeframe. Overall, we are seeking a knowledgeable and experienced Full-stack Developer who can provide expert guidance...

    $25 / hr (Avg Bid)
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    I am looking for a developer to create a smart contract for a token on the Ethereum blockchain. Here are the details of the project: Blockchain Platform: Ethereum - The smart contract should be developed on the Ethereum blockchain platform. -Another contract for revenue distribution. Token Functionalities: Tax - 5% buy and sell Tax should be converted to ETH when the tx is completed Deploy on testnet first Deploy on Main net Ideal Skills and Experience: - Experience in developing smart contracts on the Ethereum blockchain platform. - Strong knowledge of Solidity programming language. - Familiarity with ERC-20 token standards and other relevant Ethereum standards. - Ability to implement the specific functionalities required for the token. - Ability to deliver the project within a sh...

    $13 / hr (Avg Bid)
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    58 bids
    Copy of unibot Ending left
    VERIFIED

    Looking for a ready made code which I can buy today. NOT looking for new development. Should work on DEX and eth chain. Should work on telegram UI

    $2558 (Avg Bid)
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    29 bids
    INFINITY BOX EVOLUTION -- 2 14 hours left
    VERIFIED

    Presiso de um contrato inteligente no blockhain da rede polygon sistema de doações .de pessoa a o frontend. E bek end. .criar o contrato na teste nete e integrar ao front end .para que eu possa testar tudo

    $502 (Avg Bid)
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    12 bids

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