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!

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    I'm in need of a skilled blockchain developer with experience in Ethereum testnet specifically sepolia, to assist me in developing smart contracts. The key points of the project include: -**Fully Functional Frontened working with smart contract functions - **Smart Contracts Development**: Your primary role will be to develop smart contracts on the Ethereum testnet for a project funding platform - **Token Creation & Transfer**: The smart contract should enable users to create and transfer tokens on the basis if project details and target amount. - **Marketplace Creation**: The smart contract should also facilitate the creation of a marketplace for the tokens . The ideal candidate for this project should have: - Proven experience in blockchain technology, specifically in Ethereum t...

    $9 (Avg Bid)
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    This is a long term project that requires previous experience with rust programming language (similar to C / C++) for Solana programs (Block chain based smart contract). The program is a type of AMM that can receive tokens as liquidity and allow user to swap tokens with the program directly. No frontend is needed. Specific details will be provided to relevant applicants. Please make sure you are familiar with and in your reply please tell me if you are familiar with the rust/ Solana development framework.

    $736 (Avg Bid)
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    Job Title: Solidity Developer for "Dino Eggs" NFT Game Job Description: We are seeking a skilled Solidity Developer to join our project, "Dino Eggs," an innovative NFT-based game centered around the collection, breeding, and hatching of unique dinosaur eggs. Each egg is an ERC-721 token with distinct genetic traits that influence the growth and characteristics of the dinosaurs once hatched. This role focuses on smart contract development for game mechanics such as genetic inheritance, hatching processes, and player interactions within the Ethereum blockchain. Responsibilities: - Develop and deploy ERC-721 smart contracts for managing the lifecycle of dinosaur eggs, including minting, hatching, and breeding functionalities. - Implement smart contracts that hand...

    $179 (Avg Bid)
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    We're dividing assets into fractions. We have .sol files related to smart contracts (ERC20 on Ethereum with a bridge on Gnosis). We're in search of an expert who can review these files and determine their functionality for deployment. Should this collaboration proceed smoothly, we're open to establishing a long-term partnership for technical support.

    $153 (Avg Bid)
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    5 oferte

    We are looking for NFT Smart Contract Developer Project Objective: Develop a smart contract for creating and managing unique NFTs (Non-Fungible Tokens) on the Ethereum blockchain platform. Key Requirements: NFT Creation: Implement a function to create new NFTs with unique identifiers, metadata, and associated attributes. Provide the ability to specify the owner of the NFT upon its creation. Ownership Transfer: Implement a function to transfer ownership of an NFT from one Ethereum address to another. Ensure mechanisms to protect against unauthorized transfers. Ownership Verification: Develop methods for verifying ownership of a specific NFT by a given Ethereum address. Provide public access to ownership data of NFTs. Metadata Handling: Ability to store metadata of NFTs, such as images...

    $9 / hr (Avg Bid)
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    Deploy sol files on 2 chains 5 zile left
    VERIFICAT

    We're dividing assets into fractions. We have .sol files related to smart contracts (ERC20 on Ethereum with a bridge on Gnosis). We're in search of an expert who can review these files and determine their functionality for deployment. Should this collaboration proceed smoothly, we're open to establishing a long-term partnership for technical support.

    $150 (Avg Bid)
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    10 oferte

    I'm looking for a developer with in-depth experience in creating smart contracts on the Ethereum blockchain. Key Requirements: - Develop a multisend smart contract that supports ERC20 tokens. The contract should allow for the distribution of ERC20 tokens to multiple recipients in a single transaction. - Implement pause functionality as a security feature. This is crucial to protect the contract from any potential vulnerabilities or attacks. - We would like to be able to interact with the contract if possible (on etherscan) Ideal skills and experience: - Proficiency in Solidity, the programming language used for Ethereum smart contracts. - Prior experience in developing multisend contracts and incorporating pause functionality. - Knowledge of best practices for smart contract secur...

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    I'm looking to have my utility token listed on Coin Market Cap. The token is built on the Binance Smart Chain, establishing its preeminent functionality. A complete whitepaper, illustrating the motive, design, and purpose of my token, is available for reference, conveying a clear project narrative. Ideal Skills: - Knowledge about cryptocurrency, specifically utility token - Understanding of the Binance Smart Chain - Experience in token listing on Coin Market Cap

    $166 (Avg Bid)
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    15 oferte

    We're dividing assets into fractions. We have .sol files related to smart contracts (ERC20 on Ethereum with a bridge on Gnosis). We're in search of an expert who can review these files and determine their functionality for deployment. Should this collaboration proceed smoothly, we're open to establishing a long-term partnership for technical support.

    $231 (Avg Bid)
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    17 oferte
    Solidity expert needed 3 zile left
    VERIFICAT

    We're dividing assets into fractions. We have .sol files related to smart contracts (ERC20 on Ethereum with a bridge on Gnosis). We're in search of an expert who can review these files and determine their functionality for deployment. Should this collaboration proceed smoothly, we're open to establishing a long-term partnership for technical support.

    $170 (Avg Bid)
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    I'm on the hunt for pre-built Web3 games. Further specifications of the game type were left open-ended, so any genre from collectibles, role-playing, to strategy games may be considered. Are you currently working on a Web3 Game? Did you already finish making a Web3 Game? Do you perhaps worked on a Web3 game before and own the rights? We are interested in 1. buying the code and rights 2. Or listing it on our platform This is a unique opportunity where you can sell your existing Web3 Gaming Project to us or list it on our platform. Write down the following: -Platform(s) of the game -Technologies you used to make the game -Concept and type of game (5-10 sentences) -Price estimate I'm NOT looking for someone to build a game from the start!!! You have to have an already working...

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    I'm looking for a highly skilled developer with experience with cryptocurrency, blockchain and bot development. The main objective is to assist me in the creation of a bot focused on Initial Dex Offerings (IDO) participation on both ChainGPT's Launchpad () and Seedify's Launchpad () Key responsibilities: - Develop bot functionality for syncing with IDO countdowns - Enable rapid approval of transactions and execution of swaps on the blockchain as soon as IDOs are live Required skills and Experience: - Experience with bot development, especially within the cryptocurrency & space - Clear understanding of IDO participation mechanisms - Strong problem-solving abilities to navigate any technical challenges that may arise during development.

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    I'm representing a travel online agency, looking to expand our services into the web3 space through the Camino Network. We are in need of a skilled developer to assist us with the following services: - Smart Contracts Development: As we transition to the web3 environment, we need to establish secure payment transactions within our system. The ideal candidate would have experience in developing smart contracts for e-commerce, specifically within the travel industry. - System Development for Selling/Buying Travel Services: We are also looking for support in building a robust system for selling and buying travel services. This system should seamlessly integrate with the Camino Network, providing a user-friendly interface for both us and our potential partners. The successful freelance...

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    Expert Zk-snark Developer 2 zile left
    VERIFICAT

    Looking for a talented and motivated Zero-Knowledge Proofs developer to Implement a working product in a different blockchain. Please understand its a porting job to a new evm chain. If you have experience before in using zk snarks we will get along. This is not an on the job training work. Only interested in people who already done this. I am a dev, so please keep that in mind when you quote and estimate time.

    $36 / hr (Avg Bid)
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    We are currently seeking a talented Web3, Smart Contract, Solidity developer to join our team. The ideal candidate will have experience developing on the EVM chain and a strong understanding of blockchain technology. Responsibilities: Design, develop, and test smart contracts on the EVM chain Implement and deploy decentralized applications using Web3 technologies Collaborate with team members to design and implement new features Keep up to date with the latest trends and developments in the blockchain space Requirements: Proficient in Solidity programming language Experience with and other blockchain development tools Familiarity with Ethereum and other EVM-based chains Strong problem-solving skills and attention to detail Excellent communication and teamwork skills If you are passion...

    $35 / hr (Avg Bid)
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    I'm searching for a stellar developer who can construct smart contracts on TON. The ideal candidate for this job is someone who understands FunC language like the back of their hand. Key Task: - Develop smart contracts on TON for staking propuse. Preferred Skills & Experience: - Extensive experience in coding with FunC language - Familiarity with TON and its smart contracts - Understands best practices for smart contract development and security This project offers the right candidate the opportunity to show their creativity and problem-solving skills, as there are no set requirements or reference examples to follow. We are ready to hire you right now, and can hire for more project with long time relation. Thx you.

    $555 (Avg Bid)
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    Job Title: Blockchain Architect for Gaming Innovation Job Description: We're seeking a talented blockchain architect to lead the creation of a pioneering blockchain network tailored for gaming. You'll design and implement smart contracts, collaborate with game developers, and optimize performance for a seamless gaming experience. Requirements: Proven experience in blockchain architecture and development. Proficiency in smart contract development (e.g., Solidity). Creative problem-solving skills and a passion for innovation. Strong communication and collaboration abilities. Gaming industry experience or a strong interest is preferred. Additional Information: Freelance position with flexible hours and remote work option. Compensation based on experience and pro...

    $9888 (Avg Bid)
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    Solana Bot Developer 21 ore left
    VERIFICAT

    1. First code that reads token adresses from .txt or .csv file and reads if the token is found first time or it second if the first time then buys x amount of SOL or USDC (depends which one is better for you) then if the token adress was already found before then skip, search for other new token addreses in that .txt or .csv Then check current bought tokens price and if the price increased 100% sell out 50% of wallet total token holdings if the price increased 300% sell out 100% ot token, if the price from entry price went down to -90% take out 100% 2. Add function to that primary code before buying check if liquidity pool is locked and mintable then only enter if not skip and wait for new token adress Swap exchange does not matter I prefer Jupiter depends on the price and code complexity

    $210 (Avg Bid)
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    I'm seeking an experienced blockchain developer to create an Ethereum based ERC-20 token, with unique features of a private pre-sale and a vesting period. Key Responsibilities: - Develop an Ethereum ERC-20 token from scratch. - Implement a private pre-sale phase for initial investors. - Set up a vesting period for token distribution to prevent immediate selling off. Ideal expertise and skills: - Extensive experience in Ethereum blockchain and ERC-20 tokens. - Familiarity with smart contract security, specifically the implementation of a private pre-sale and vesting period. - Ability to create custom functionality beyond standard ERC-20 token framework. For this project, using typical smart contract security method like OpenZeppelin or Consensys Due Diligence is not preferred. ...

    $21 (Avg Bid)
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