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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    Wanted: Pre-Built Web3 Games. Do you have a Working Web3 Game? -- 2 6 วัน left
    ยืนยันแล้ว

    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...

    $149 (Avg Bid)
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    10 คำเสนอราคา

    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 ChainGPT'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.

    $172 (Avg Bid)
    $172 การประมูลเฉลี่ย
    50 คำเสนอราคา

    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...

    $230 (Avg Bid)
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    19 คำเสนอราคา
    Expert Zk-snark Developer 5 วัน left
    ยืนยันแล้ว

    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.

    $35 / hr (Avg Bid)
    $35 / hr การประมูลเฉลี่ย
    30 คำเสนอราคา

    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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    49 คำเสนอราคา
    Expert TON Smart Contract Creation 5 วัน left
    ยืนยันแล้ว

    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 4 วัน left
    ยืนยันแล้ว

    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

    $213 (Avg Bid)
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    Ethereum ERC-20 Token with Pre-Sale 3 วัน left
    ยืนยันแล้ว

    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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    Ethereum MEV Bot Developer 3 วัน left
    ยืนยันแล้ว

    We are looking for a skilled blockchain developer with a strong background in creating Maximum Extractable Value (MEV) bots. The ideal candidate will have hands-on experience in developing efficient and fast MEV bots to capitalize on blockchain opportunities, including strategies such as frontrunning, arbitrage, sandwiching, and flash loans. Responsibilities: -Design and develop a high-performance MEV bot capable of executing complex trading strategies on blockchain networks. -Implement algorithms and logic for frontrunning, arbitrage, sandwiching, and flash loans to maximize profitability. -Integrate risk management mechanisms to evaluate and mitigate potential downsides of transactions. -Optimize bot performance for speed, reliability, and scalability to handle high transaction volumes...

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    Ethereum Wallet Analytics , calculate PnL for any wallet address 2 วัน left
    ยืนยันแล้ว

    I am seeking a developer to create a tool that can calculate the profit and loss (PnL) for any given Ethereum wallet address. The tool should be able to determine the total number of coins bought, as well as calculate the profit and loss from all transactions associated with the wallet. Key Features: Wallet Address Input: Users should be able to input any Ethereum wallet address. Transaction Analysis: The tool should analyze all transactions associated with the provided wallet address. Profit and Loss Calculation: Calculate the total number of coins bought and the profit and loss incurred from all transactions. User-Friendly Interface: The tool should have a user-friendly interface for ease of use. Skills Required: Proficiency in Ethereum blockchain technology. Experience in cryptocurre...

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    I'm in need of a skilled developer who can create a custom module for the Cosmos SDK. This module will be focused on token creation. As I've never worked with the Cosmos SDK before, I require someone who is not only familiar with it but also has a strong grasp of blockchain development and tokenomics. Key Requirements: - Development of a custom module for the Cosmos SDK - Focus on token creation - Expertise in Cosmos SDK and blockchain development The successful candidate will need to be able to understand the project requirements, propose solutions, and implement them effectively. Strong communication skills are essential, as is the ability to work independently and proactively. A proven track record in blockchain development and previous experience with the Cosmos SDK are hig...

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    Need to Build Token in solana 2 วัน left
    ยืนยันแล้ว

    Token on solana Name : Make America Great Again Symbol: $Maga Supply : 1 billion Decimals : 9 Tax : 3% buy tax and 3% sell tax(3% to lp and 3% to marketing wallet) *Noone can hold more than 6.7%* (like a supply block) Marketing wallet : GQ5ZVUtoUeLvfAMmUxwMrSNnXacDYSwEZW2abJk2DKcW

    $83 (Avg Bid)
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    1 คำเสนอราคา

    I'm seeking a skilled blockchain developer to design a decentralized finance application, primarily being a cryptocurrency exchange. While particular functionalities were not indicated, let's make sure the platform includes common features such as Buying/Selling Cryptocurrencies, Secure Wallets for Storage, and Real-Time Pricing Tracker. The ideal candidate will have significant experience in creating such platforms, an understanding of blockchain and DeFi, and a commitment to secure, seamless user experiences.

    $20 / hr (Avg Bid)
    $20 / hr การประมูลเฉลี่ย
    4 คำเสนอราคา
    Need to build token on solana 1 วัน left
    ยืนยันแล้ว

    Token on solana Name : Make America Great Again Symbol: $Maga Supply : 1 billion Decimals : 9 Tax : 3% buy tax and 3% sell tax(3% to lp and 3% to marketing wallet) *Noone can hold more than 6.7%* (like a supply block) Marketing wallet : GQ5ZVUtoUeLvfAMmUxwMrSNnXacDYSwEZW2abJk2DKcW

    $178 (Avg Bid)
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    4 คำเสนอราคา
    Solana Token Builder Needed 1 วัน left
    ยืนยันแล้ว

    Token on solana Name : Make America Great Again Symbol: $Maga Supply : 1 billion Decimals : 9 Tax : 3% buy tax and 3% sell tax(3% to lp and 3% to marketing wallet) *Noone can hold more than 6.7%* (like a supply block) Marketing wallet : GQ5ZVUtoUeLvfAMmUxwMrSNnXacDYSwEZW2abJk2DKcW

    $85 (Avg Bid)
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    2 คำเสนอราคา

    I'm looking for a skilled freelancer to create a bespoke carbon trading website, specifically for Renewable Energy Certificates (RECs). The platform should also integrate a cryptocurrency wallet for our custom digital currency named "Gaga". The main functionalities that I require: - User registration and login system: Ensure that users can easily sign up and access their accounts securely. - Listing and trading of RECs: The platform should allow users to list their RECs and engage in trading activities. - Cryptocurrency wallet integration: The site should have a seamless integration with a cryptocurrency wallet for our digital currency, Gaga. Key Details: - Design: I'm envisioning a professional and corporate layout for the website. The design should be clean, modern,...

    $81 (Avg Bid)
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    4 คำเสนอราคา
    TON Blockchain - Smart Contract & Token Development 13 ชั่วโมง left
    ยืนยันแล้ว

    I'm seeking a skilled blockchain developer to work on a project that involves creating a new contract and token on the TON blockchain. Key Responsibilities: - Develop the Smart Contract: You will be responsible for the design and development of a smart contract that aligns with the project's specific requirements. - Token Creation: You'll also need to create a new token on the TON blockchain. Requirements: - Expertise in blockchain development. - Proficiency in TON blockchain. - Previous experience in smart contract and token creation. - Strong understanding of blockchain security. Your work should adhere to basic security measures. Your experience in blockchain, particularly in TON, will be essential to ensure the integrity of the contract and token.

    $416 (Avg Bid)
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    74 คำเสนอราคา
    Create Solana NFT Contract and Minting Website 11 ชั่วโมง left
    ยืนยันแล้ว

    I'm in need of a seasoned developer with experience in the Solana blockchain, preferably one who has previous experience in creating Solana SPL NFT contracts. I have already prepared the art works and meta data. The main components of the project include: - NFT Contract: The main request is the creation of a Solana SPL NFT contract. Understanding of SPL (Solana Program Library) contracts is crucial for this role. - Minting Website: The website should cater to both public and pre-sale minting. Experience in developing and integrating wallet functionality for such purposes is highly desirable. - Design: I'm looking to achieve a minimalist and clean design for the minting website. Past works that present a similar aesthetic would greatly improve your chances of successful applic...

    $355 (Avg Bid)
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    Crypto Wallet Integration in Telegram 8 ชั่วโมง left
    ยืนยันแล้ว

    Hi, I would like a telegram software, multi wallet that buys and sells tokens on radyum and orca, where I indicate the token contract. The bot must allow the generation of different wallets, and I must be able to indicate how many wallets it must generate and must carry out a sale or purchase transaction for each wallet generated. You need to check @onenigger For example: 1) I launch the software 2) I suggest generating 3 wallets 3) Generate public address and private key 4) I send solana to these wallets 5) I send the contract to purchase 6) I decide on ryadium or Orca 7) For each wallet he must purchase the purchased token using 90% of the amount of sol 8) when I decide to sell the token, he must sell the entire amount of the token

    $478 (Avg Bid)
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    Need to build solana token 4 ชั่วโมง left
    ยืนยันแล้ว

    Token on solana Name : Make America Great Again Symbol: $Maga Supply : 1 billion Decimals : 9 Tax : 3% buy tax and 3% sell tax(3% to lp and 3% to marketing wallet) *Noone can hold more than 6.7%* (like a supply block) Marketing wallet : GQ5ZVUtoUeLvfAMmUxwMrSNnXacDYSwEZW2abJk2DKcW

    $419 (Avg Bid)
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    5 คำเสนอราคา
    Seeking Senior Blockchain Engineer 1 ชั่วโมง left
    ยืนยันแล้ว

    We are looking for a talented and experienced blockchain engineer to join our team and help us build the next generation of crypto trading tools. The project has been completed by 30%. So your main responsibility is to complete our crypto trading platform according to our requirements. - Responsibilities: o Develop and maintain our proprietary crypto trading platform. o Integrate with more crypto exchanges for data retrieval and order execution. o Enhance security and performance of the trading platform. o Collaborate with our team to define product features and roadmap. o Stay up-to-date with the latest developments in blockchain technology and crypto markets. - Requirements: o Bachelor's degree in Computer Science, Engineering, or a related field. o Proven experience i...

    $52 / hr (Avg Bid)
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    38 คำเสนอราคา

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