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 24,379 reviews, clients rate our Smart Contracts Experts 4.83 out of 5 stars.
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    25 jobs found, pricing in USD
    simple solana token build 6 days left
    VERIFIED

    I am looking for a skilled developer who has experience with Solana to create a basic token. This project will involve building a token with the following characteristics: - A buy and sell tax of 5%: The token should automatically tax 5% on buys and sells. - Fixed supply: The token should have a fixed supply. This means that once the tokens are created, the total token supply will not change. The ideal candidate for this project should have: - Proficiency in Solana development - Experience in creating tokens with unique tax structures - Understanding of the difference between fixed and variable token supplies. If you have the experience with Solana and token creation, and can deliver a quality product within a reasonable timeframe, I would love to hear from you.

    $18 - $150
    $18 - $150
    0 bids

    Integrate a staking smart contract with a React frontend page for interaction. The necessary components including the staking contract, staking react page and token contract have already been prepared. Initially, we will conduct trials on the Sepolia testnet or other testnet to ensure all systems are operational before launching on the Ethereum mainnet. I have already source code for UI. Budget: 1k timeline: 1 week Our staking contract and staking page have been forked from this project: - Staking contract: - Staking page: How to apply: 1. Video introduction -time: 1~2minutes -format: link url -content: full name, location, skills

    $1149 (Avg Bid)
    $1149 Avg Bid
    43 bids

    I am in need of a skilled blockchain developer who specifically has experience with Ethereum. My main requirement is to set up a robust blockchain network for my project. This network will need to have the capability to execute automated transactions. Key Tasks: - Create a secure and efficient Ethereum blockchain network - Implement automated transaction functionality Ideal Skills: - Proven experience working with Ethereum blockchain technology - Expertise in setting up blockchain networks - Extensive knowledge in smart contract development - Strong understanding of automated transactions - Ability to work with full transparency and communicate effectively

    $7 - $18
    $7 - $18
    0 bids

    I'm seeking a proficient developer with extensive experience in Solidity to create smart contracts for my cryptocurrency trading project. These smart contracts will be deployed on the Ethereum blockchain. Key Functionalities: - An Automated Trading System: The primary purpose of the smart contracts is to enable automated trading. The contracts should be designed to execute trades based on predefined conditions without needing human intervention. Ideal Skills and Experience: - Proficiency in Solidity: You should have a strong understanding and practical experience with Solidity programming language. - Prior Experience: Previous work on creating smart contracts for automated trading or similar projects will be highly beneficial. - Knowledge of Ethereum: You should be familiar with the...

    $187 (Avg Bid)
    $187 Avg Bid
    2 bids

    I'm in need of expert developers who specialize in creating smart contracts on the Ethereum blockchain. Im looking for assistance in dealing with flash loans. The main function of our contract will center around the exciting field of Decentralized Finance (DeFi). Key features the contract should include are: - Yield Farming capabilities - Lending and Borrowing functionality - Liquidity Pool integration Ideal freelance candidates should have: - Proficiency in Solidity programming - In-depth understanding of the Ethereum blockchain environment - Prior experience in designing and implementing DeFi smart contracts - Proven track record with Yield Farming, Lending/Borrowing, and Liquidity Pool systems Please, only bid if you're confident in fulfilling these requirements. Looking ...

    $156 (Avg Bid)
    $156 Avg Bid
    3 bids

    Please apply only if you can start immediately. I'm seeking a highly skilled blockchain developer to create first-rate smart contracts for an upcoming project. Though the specifics of the transactions that these smart contracts will be used for hasn't been decided yet, you'll be required to produce high-quality, robust, and efficient code. Key responsibilities will include: • Identifying and defining the requirements for the smart contracts • Creating and implementing the smart contracts Ideal candidates will have: • Proven experience in blockchain development • Extensive knowledge of smart contracts development • Ability to work independently and take initiative • Excellent problem-solving skills Please detail your experience with creating ...

    $39 / hr (Avg Bid)
    $39 / hr Avg Bid
    4 bids

    As an established blockchain company, we're currently in the market for a seasoned Ethereum blockchain specialist to join our team. This individual will primarily focus on DeFi, harnessing their expertise to further strengthen our offerings. Responsibilities: - DeFi Blockchain Development Skills & Experience: - Proven experience as a Senior Blockchain Engineer, particularly within Ethereum. - A strong understanding and experience in DeFi. - Developed smart contracts experience is a plus but not necessary. - Highly capable in designing sophisticated blockchain architecture. - Demonstrable experience implementing effective security measures. We look forward to receiving proposals from candidates with a robust understanding of Ethereum and a strong interest in developing for DeF...

    $2258 (Avg Bid)
    $2258 Avg Bid
    23 bids

    Please apply only if you can start immediately. I'm seeking a highly skilled blockchain developer to create first-rate smart contracts for an upcoming project. Though the specifics of the transactions that these smart contracts will be used for hasn't been decided yet, you'll be required to produce high-quality, robust, and efficient code. Key responsibilities will include: • Identifying and defining the requirements for the smart contracts • Creating and implementing the smart contracts Ideal candidates will have: • Proven experience in blockchain development • Extensive knowledge of smart contracts development • Ability to work independently and take initiative • Excellent problem-solving skills Please detail your experience with creating ...

    $25 / hr (Avg Bid)
    $25 / hr Avg Bid
    5 bids

    Please apply only if you can start immediately. I'm seeking a highly skilled blockchain developer to create first-rate smart contracts for an upcoming project. Though the specifics of the transactions that these smart contracts will be used for hasn't been decided yet, you'll be required to produce high-quality, robust, and efficient code. Key responsibilities will include: • Identifying and defining the requirements for the smart contracts • Creating and implementing the smart contracts Ideal candidates will have: • Proven experience in blockchain development • Extensive knowledge of smart contracts development • Ability to work independently and take initiative • Excellent problem-solving skills Please detail your experience with creating ...

    $33 / hr (Avg Bid)
    $33 / hr Avg Bid
    7 bids

    I am seeking a skilled Solana / Rust developer with experience in creating crypto projects to help me build a raffle platform. Key Project Details: - I need a robust raffle platform that includes a random winner selection system, a ticket purchasing system, and a mechanism for distributing prizes. - You will be working with my specific design in mind, so attention to detail and the ability to implement a pre-existing design is essential. Ideal Skills and Experience: - Proficient in Solidity development - Previous experience with crypto projects - Experience with developing raffle or gambling projects is a plus - Strong attention to detail and the ability to implement a specific design If you are a developer with a good understanding of Solidity, crypto projects, and raffle systems...

    $37 / hr (Avg Bid)
    $37 / hr Avg Bid
    16 bids

    Where can we find the programmer or developer capable of delivering a harmonious, transparent platform for fostering creative collaboration, innovative design, and management? Our vision entails the creation of a system/solution for decentralized modeling and display software, uniting designers for CNC and computer-generated practical art, asset display and management, and a customer interaction and processing ecosystem. Drawing inspiration from O-LAP () note, its outdated, an open-source community-run platform for parametric furniture design, we aim to infuse our project with the latest wisdom from established methods like NEM, Ethereum, and similar platforms. We seek to capitalize on the wealth of open-source possibilities readily available. We request your response outlining the bes...

    $21 / hr (Avg Bid)
    $21 / hr Avg Bid
    12 bids

    Please apply only if you can start immediately. I'm seeking a highly skilled blockchain developer to create first-rate smart contracts for an upcoming project. Though the specifics of the transactions that these smart contracts will be used for hasn't been decided yet, you'll be required to produce high-quality, robust, and efficient code. Key responsibilities will include: • Identifying and defining the requirements for the smart contracts • Creating and implementing the smart contracts Ideal candidates will have: • Proven experience in blockchain development • Extensive knowledge of smart contracts development • Ability to work independently and take initiative • Excellent problem-solving skills Please detail your experience with creating ...

    $12 / hr (Avg Bid)
    $12 / hr Avg Bid
    15 bids

    More details: What type of blockchain development are you looking for? Blockchain integration Which blockchain platform do you prefer for your cryptocurrency development? This question was skipped by the user Are there any specific features or functionalities you would like to integrate into your existing system through blockchain integration? Secure and transparent transactions, Decentralized identity management, Immutable data storage

    $853 (Avg Bid)
    $853 Avg Bid
    13 bids
    Blockchain Developer Wanted 2 days left
    VERIFIED

    We will launch a token voting platform and need a skilled blockchain developer for our project.

    $20 / hr (Avg Bid)
    $20 / hr Avg Bid
    98 bids

    I'm in search of a TON chain expert with prior experience in presale to help fix existing errors in my project. Key Requirements: - TON Chain Expertise: Profound knowledge of TON chain and hands-on experience in working with it is a must. - Presale Experience: Prior experience in developing and managing presale projects is highly preferred. - Error Fixing: Capable of identifying and rectifying errors in an existing TON chain implementation. - Presale Launch Pad: Ability to implement and manage a presale launch pad within the TON chain. Your primary responsibilities will include: - Identifying and fixing errors in the current TON chain implementation. - Implementing a presale launch pad within the TON chain. - Assisting in the development of a successful presale strategy. Ideal cand...

    $523 (Avg Bid)
    $523 Avg Bid
    31 bids

    I have an urgent need for a skilled blockchain developer who can swiftly handle smart contract development and blockchain integration. The project requires someone who can hit the ground running and deliver quality work within a tight timeframe. Ideal candidates should have: - Proven experience in smart contract development, particularly on Ethereum - A solid understanding of blockchain integration - The ability to work efficiently and under pressure - Good communication skills and a proactive approach to problem-solving The project timeline is urgent, so if you're confident in your blockchain skills and are available to start immediately, I'd love to hear from you.

    $479 (Avg Bid)
    $479 Avg Bid
    16 bids

    I am looking for a proficient developer who can build a decentralized application (DApp) aimed at the education sector. Key features include: - User registration and login system: To ensure smooth and secure access for users, I want a registration and login system based purely on the traditional email and password approach. - Interactive learning modules: These should incorporate diverse content types such as video lectures, interactive quizzes, and downloadable resources. - Token Wallet Integration: The DApp should allow users to hold and manage tokens. Proficiency in smart contract development and encryption is a must. - Initial Coin Offering (ICO) & DEX Trading: The project extends to setting up an ICO for the tokens and enabling their trade on decentralized exchanges. Candidat...

    $1318 (Avg Bid)
    $1318 Avg Bid
    103 bids

    I need a smart contract developed for the Tron blockchain to create an utility token. Key features and requirements: - The primary function of the token will be to provide utility within my platform. - Users will acquire the token through a giveaway, rather than purchase or earning. Ideal Skills and Experience: - Proficiency with Tron blockchain and smart contract development. - Experience in creating utility tokens. - Familiarity with token distribution mechanisms, particularly airdrops. - Understanding of blockchain governance structures is a plus.

    $688 (Avg Bid)
    $688 Avg Bid
    4 bids

    Please apply only if you can start immediately. I'm seeking a highly skilled blockchain developer to create first-rate smart contracts for an upcoming project. Though the specifics of the transactions that these smart contracts will be used for hasn't been decided yet, you'll be required to produce high-quality, robust, and efficient code. Key responsibilities will include: • Identifying and defining the requirements for the smart contracts • Creating and implementing the smart contracts Ideal candidates will have: • Proven experience in blockchain development • Extensive knowledge of smart contracts development • Ability to work independently and take initiative • Excellent problem-solving skills Please detail your experience with creating ...

    $14 / hr (Avg Bid)
    $14 / hr Avg Bid
    19 bids

    We have developed our custom contract based on ERC721A that handles bulk minting in a single transaction. Now, I would need your help in doing the following tasks A- Uploading to IPFS: We have around 6k images. Out of which we would like to deploy 1K now and upload the rest of images for the collection later during our next sale phase. For IPFS pinning services, we would like to go with the Third Web - Here, I know that we can update uri for uploading the remaining images later for the remaining Please let me know if it would affect anyhow to the buyers who purchased NFTs before uploading these images. B - Regarding deployment on Testnet - Yes, before deploying the contract on Mainnet, we would like to check things on Testnet. Now, please let me know if there is any safe method of ...

    $22 / hr (Avg Bid)
    $22 / hr Avg Bid
    26 bids
    Blockchain expert Needed 14 hours left
    VERIFIED

    Understanding the Role of a Blockchain Developer To integrate wallet connect feature and make the game more decentralized by using smart contracts, it's essential to understand the role of a blockchain developer and the skills required for this task. A blockchain developer is responsible for developing decentralized applications (dApps) and smart contracts based on blockchain technology. They need to understand the architecture and protocols of the technology. In the context of game development, blockchain developers are also involved in developing 3D models, 3D designs, and 3D content used in games . Specializations within Blockchain Tech When looking for a blockchain developer to work on integrating the wallet connect feature and smart contracts into the game, it's importan...

    $1271 (Avg Bid)
    $1271 Avg Bid
    46 bids

    I am looking for blockchain developers who specialize in Solana, with a focus on smart contract development. The goal of this project is to create a Solana-based utility token that can be redeemed on my website. This token will primarily grant limited time access to the control panel of our autonomous rover, used in our agri-tech business. Key Responsibilities and Skills: - Developing a Solana-based utility token - Ensuring this token can be redeemed on our website via QR code scanning - Enabling the redeemed token to provide limited time control access to our autonomous rover Ideal Experience: - Extensive experience in blockchain development - Strong expertise in Solana and smart contract development - Previous experience in utility token development and redemption - Familiarity with...

    $349 (Avg Bid)
    $349 Avg Bid
    3 bids

    I'm in need of a Solidity expert to assist with developing smart contracts for Uniswap V3. Key Responsibilities: - Development of smart contracts for Uniswap V3 - Ensuring the security and efficiency of the code - Collaborate with the team to implement and deploy the smart contracts Required Expertise: - Proficiency in Solidity - Experience in developing smart contracts, preferably for Uniswap - Strong understanding of blockchain technology and smart contract security - Ability to work in a team environment Ideal Freelancer: I am ideally looking for a freelancer with an expert level of experience in Solidity. The ideal candidate would have a proven track record of developing secure and efficient smart contracts, particularly for Uniswap. A good understanding of DeFi protocols and b...

    $225 (Avg Bid)
    $225 Avg Bid
    20 bids

    I am on the lookout for an experienced developer who is well-versed in Rust and Substrate. Their main task will involve the following: - Parachain development - Creation of smart contracts - Blockchain application development - Performance optimization The expected deliverables will be optimized smart contracts and blockchain applications on Polkadot. Even though specific outcomes for the smart contracts weren't provided, the ultimate goal is to leverage blockchain's full potential. The ideal candidate should have deep knowledge of the Polkadot platform and experience in working with Rust and Substrate. A solid understanding of blockchain solutions would be an added bonus. I look forward to working with someone who can efficiently apply their skills to meet our objectives.

    $733 (Avg Bid)
    $733 Avg Bid
    40 bids

    Busco un desarrollador blockchain con experiencia para crear un Utility Token ERC-20 en Polygon con su correspondiente Smart Contract.

    $659 (Avg Bid)
    $659 Avg Bid
    10 bids

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