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!

De 23,852 opiniones, los clientes califican nuestro Smart Contracts Experts 4.83 de un total de 5 estrellas.
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    24 trabajados encontrados, precios en EUR

    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:

    €1947 (Avg Bid)
    €1947 Oferta promedio
    71 ofertas

    Job Description: Octal IT Solution LLP are seeking a talented and experienced Blockchain Developer (Web3) to join our team and take a leading role in initiating the development of our Game platform. As a Blockchain Developer, you will be responsible for designing, implementing, and maintaining the blockchain infrastructure and smart contracts that power our platform. You will work closely with our product and design teams to translate requirements into technical solutions and contribute to the overall architecture and development roadmap. Responsibilities: Design and develop the blockchain infrastructure and smart contracts for the Chess Game Platform. Collaborate with the product and design teams to understand requirements and translate them into technical specifications. Implement ...

    €29 / hr (Avg Bid)
    €29 / hr Oferta promedio
    30 ofertas

    We are embarking on an ambitious project to develop a cutting-edge decentralized finance (DeFi) application using Node.js as the primary technology stack. Our goal is to create a platform that revolutionizes the way users engage with financial services by leveraging blockchain technology and smart contracts. The project presents an exciting opportunity to be at the forefront of the rapidly evolving DeFi space. Required Skills: Proficiency in Node.js development Experience with blockchain development, particularly Ethereum Familiarity with DeFi protocols and concepts Strong understanding of RESTful APIs Knowledge of security best practices in blockchain development Project Scope: The DeFi app will encompass various features and functionalities Timeline and Budget: Expected timeline for ...

    €34903 (Avg Bid)
    €34903 Oferta promedio
    60 ofertas

    We want to build this: With some changes: - colors, branding - different EVM blockchain (Base) I have the codebase in my github, and the contract. What I need is: - for you to modify codebase for new contract, and new design. - host it (on Netlify, or something similiar if you think it is better). Or explain me how to host it. - assist me with testing on testnet. Tell your budget and timeline.

    €2429 (Avg Bid)
    €2429 Oferta promedio
    61 ofertas

    I am in need of a solidity developer who can incorporate a feature for swapping decimal numbers into an existing token. This task calls for: - An accomplished developer, versed in solidity. - The candidate ideally will have a background in actioning similar token system alterations. - I would appreciate reading about your previous relevant experiences in your application. If you have successfully manipulated token decimal numbers in the past, I would be especially interested in hearing about it. Your task will be to seamlessly add this functionality, making sure the existing token system is not disrupted. To reiterate, experience in similar projects will be a crucial factor in my decision-making process.

    €470 (Avg Bid)
    €470 Oferta promedio
    53 ofertas

    We are looking for a talented Ethereum smart contract developer to build a portion of our product! Requirements: - Solidity developer with experience on prior smart contract work - Knowledge of best security practices in Solidity - Able to build robust, readable, and expandable code - Creation of robust unit tests, with the ability to demonstrate the functionality of the smart contract to us before it's deployed in a real world scenario - Speaks fluent English and has communication skills, which will be necessary to understand our product and receive feedback Job Duties: We are working on TandaPay, an open source risk and compliance software. You will be developing the smart contract that is at the heart of TandaPay and implements its basic and necessary functionality. Due to the n...

    €33 / hr (Avg Bid)
    €33 / hr Oferta promedio
    25 ofertas

    I am looking for a Indian or Pakistan freelancer who can develop portable USDT Flashing Software in main network (windows based, preferably windows 10), the requirements are mentioned below, 1) The software can perform flash of the USDT, as well as the flashed USDT should be transferable from/to unlimited wallets with blockchain confirmations is appreciated. since it is flash btc it must be visible in BTC wallet address for 365 days. There will be no transaction fee while sending from "flash s/w" to "btc wallet" as it will be no confirmations. There will be no limitation for daily transfer for usdt It can’t be tracked as fake transaction. should take normal time to send btc one wallet to another wallet in normal internet connection. 2) These usdt will disappea...

    €454 (Avg Bid)
    €454 Oferta promedio
    8 ofertas
    Crypto Casino Developer Needed 5 días left
    VERIFICADO

    We are looking to get a crypto casino game built, similar to Zkasino, Rollbit, Stake. If you are passionate about crypto, tech, and development, and want to build something that tens of thousands of people will use, then this opportunity is perfect for you! A fork of existing games is acceptable. The games will need to have a referral (affiliate) system in place for users to refer others and earn rewards from it. Games should accept funds from the top chains (ETH, BNB, BASE, MATIC, etc). Users will have their own wallet on the game which they will use the funds in to play the games. Scope will include frontend, backend and smart contracts required for a fully functioning game. Requirements: - Understanding of the crypto industry and how users operate. - Highly organized, professional...

    €35 / hr (Avg Bid)
    €35 / hr Oferta promedio
    33 ofertas
    simple solana token build 4 días left
    VERIFICADO

    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.

    €17 - €138
    €17 - €138
    0 ofertas

    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

    €1106 (Avg Bid)
    €1106 Oferta promedio
    57 ofertas

    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

    €12 (Avg Bid)
    €12 Oferta promedio
    4 ofertas

    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...

    €739 (Avg Bid)
    €739 Oferta promedio
    4 ofertas

    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 ...

    €377 (Avg Bid)
    €377 Oferta promedio
    3 ofertas

    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...

    €2211 (Avg Bid)
    €2211 Oferta promedio
    31 ofertas

    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 ...

    €24 / hr (Avg Bid)
    €24 / hr Oferta promedio
    7 ofertas

    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 ...

    €35 / hr (Avg Bid)
    €35 / hr Oferta promedio
    5 ofertas

    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 ...

    €29 / hr (Avg Bid)
    €29 / hr Oferta promedio
    9 ofertas

    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...

    €36 / hr (Avg Bid)
    €36 / hr Oferta promedio
    19 ofertas

    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...

    €19 / hr (Avg Bid)
    €19 / hr Oferta promedio
    12 ofertas

    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 Oferta promedio
    14 ofertas

    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

    €787 (Avg Bid)
    €787 Oferta promedio
    13 ofertas
    Blockchain Developer Wanted 8 horas left
    VERIFICADO

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

    €18 / hr (Avg Bid)
    €18 / hr Oferta promedio
    97 ofertas

    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...

    €477 (Avg Bid)
    €477 Oferta promedio
    33 ofertas

    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.

    €442 (Avg Bid)
    €442 Oferta promedio
    15 ofertas

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