Solidity is a programming language that is primarily used to create decentralized applications (dApps) and crypto tokens. It is used within the blockchain space to code, verify, and secure transactions on Ethereum-based networks. By hiring a Solidity Expert, they can write, debug and deploy various smart contracts on Ethereum as well as ensure compliance of their smart contracts with standards like ERC20 & ERC721 tokens.

Having a qualified Solidity Expert can bring you the peace of mind knowing that you are dealing with a subject matter specialist. Freelancer.com has many skilled Solidity Experts who can help you build sophisticated software solutions with the highest of quality with their proficiency in writing efficient smart contracts in Solidity.

Here's some projects that our expert Solidity Experts made real:

  • Updating existing Smart Contracts
  • Developing financial bots and trading networks
  • Creating dApps on alternative blockchain networks
  • Designing new money transferring systems
  • Auditing pre-existing token protocols
  • Creating novel blockchain ecosystems
  • Developing NFT marketplaces

When it comes to blockchain coding and programming complex code, there is no better way to do it securely than using Solidity. With its ever increasing importance in many facets of decentralized technology, having an experienced Solidity Expert on your team could be the competitive edge you need. So why wait? Post your project now on Freelancer.com and hire a Solidity Expert and create an unthinkable product or system!

De 24,610 opiniones, los clientes califican nuestro Solidity Experts 4.86 de un total de 5 estrellas.
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    15 trabajados encontrados, precios en EUR

    Necesito un desarrollador web3 y blockchain capacitado para mi proyecto. Específicamente, necesito desarrollo web3 y contrato inteligente desarrollado con Solidity para un mercado simple utilizando la cadena de bloques Polygon. Las tareas y entregables clave incluyen: - Integracion de blockchain ( nodo proveedor - IPFS si es necesario o no) en el front-end ya construido - Crear backend descentralizado y que funcione ( integrad con el front end) la aplicacion Anticipo que este contrato brindará una excelente oportunidad para mostrar sus sólidas habilidades en contratos inteligentes, web3 y, especialmente, desarrollo de redes Polygon. Se valorará punto extra tener experiencia trabajando con mercados o proyectos similares.

    €536 (Avg Bid)
    €536 Oferta promedio
    19 ofertas

    I'm in need of a skilled blockchain developer with a rich experience in Ethereum. The objective here is to create a smart contract for an existing system, focusing on asset swapping as the core functionality. Key Points: - Your primary task will be creating a secure and efficient smart contract that facilitates the seamless swapping of digital assets on the Ethereum blockchain. - The system is already in place, so you should be able to integrate the smart contract into the existing framework smoothly. Ideal Skills and Experience: - Profound knowledge and extensive hands-on experience with Ethereum blockchain and smart contract development. - Prior experience in DeFi app development, specifically with asset swapping features. - Strong understanding of blockchain security principles a...

    €20 / hr (Avg Bid)
    €20 / hr Oferta promedio
    40 ofertas

    I am in search of a skilled full stack developer who can help with the design and implementation of a Decentralized Application (DApp) on the Ethereum platform. Responsibilities: - Developing smart contracts in Solidity - Creating the frontend using HTML, CSS. JavaScript and React - Testing and deployment using Truffle and Ganache, Metamask Ideal Skills and Experience: - Proficiency in the Solidity programming language - Capability to work with JavaScript, especially React.js - Familiarity with Ethereum blockchain and DApp development - Previous experience with Truffle and Ganache for testing and deployment processes - Background in creating secure, efficient blockchain networks and transactions Candidates who combine the above technical expertise with strong problem-solving skills and...

    €288 (Avg Bid)
    €288 Oferta promedio
    12 ofertas

    I'm in need of a skilled Solidity developer to help me with the migration of my LP pool from BUSD to BNB on the Binance Smart Chain. Key Responsibilities: - Migrate liquidity provision functionality from BUSD to BNB in the LP pool. - Ensure the integrity and security of the smart contract. Ideal Skills: - Proficient in Solidity language. - Experience in working with LP pools. - Understanding of Binance Smart Chain and its ecosystem. - Attention to detail to ensure the security and integrity of the smart contract.

    €174 (Avg Bid)
    €174 Oferta promedio
    24 ofertas
    BSC LP Pool Migration to USDT 6 días left
    VERIFICADO

    I'm in need of a skilled blockchain developer to assist in the migration of our LP pool from BUSD to USDT on the Binance Smart Chain. Key Requirements: - **Blockchain Platform:** You should be well-versed in the Binance Smart Chain, with proven experience in LP pool migrations. - **Migration Goals:** The primary objective for this move is to enhance liquidity options for our LP pool. - **Smart Contracts Update:** You'll be responsible for updating the existing smart contracts to reflect the change in our LP pool. Ideal skills and experience for this job include: - Proficiency in Binance Smart Chain - Experience in LP pool migrations - Solid understanding of liquidity options in DeFi - Proven track record in smart contract creation and updates Your ability to work efficiently...

    €472 (Avg Bid)
    €472 Oferta promedio
    44 ofertas
    Solidity Code Review 5 días left
    VERIFICADO

    I need the Solidity code in my smart contract developement project to be reviewed as soon as possible. Key Requirements: - I need an experienced individual to review the solidity code in the smart contract development project. The code should be reviewed for errors, security vulnerabilities, and overall solidity best practices. - The review should be done as soon as possible. Ideal Skills and Experience: - Should have a strong foundation and experience in Solidity and smart contract development. - Past work in reviewing and auditing Solidity code is a must. - Ability to work swiftly and efficiently to meet the urgent deadline.

    €120 (Avg Bid)
    €120 Oferta promedio
    6 ofertas

    I'm looking forward to having an experienced developer create a flash loan arbitrage bot for me. Here are the specifics needed: - **Exchange Platforms**: The bot should be able to carry out transactions efficiently on AAVE, SUSHI SWAP, and UNISWAP. The bot will need to navigate these platforms seamlessly to offer the quickest and most profitable arbitrage opportunities. - **Blockchain Network**: Specifically, I require the bot to operate within the Ethereum network, as it is the blockchain I am most familiar with and find the most reliable and suitable for my needs. - **Programming Language**: The bot should be developed using JavaScript, with a focus on performance and responsiveness. - **Skills and Experience**: An expert in JavaScript is desired for this project. Experience in ...

    €517 (Avg Bid)
    €517 Oferta promedio
    34 ofertas

    I'm in immediate need of a blockchain consultant to help with Tron-based smart contract development. This project requires someone with a profound understanding of blockchain technology, particularly smart contracts, and extensive experience in Tron. Key Project Aspects: - Urgent Requirement: The project needs to be completed as soon as possible. It's essential to be able to dedicate time to this promptly. - Tron Experience: Proficiency with Tron is a necessity, as the smart contract I require must be specifically developed on this platform. - Smart Contract Expertise: You should have a proven track record in creating smart contracts and be able to provide guidance on the best practices and security considerations for such applications. Ideal Skills and Experience: - Proven e...

    €500 (Avg Bid)
    €500 Oferta promedio
    24 ofertas

    I'm looking for a skilled Solana smart contract developer to create a custom token with a unique feature. The token should be created on the Solana blockchain, and have the capability for Dollar Cost Averaging. This involves: - **Automated Recurring Buys:** The main functionality for the Dollar Cost Averaging feature is automated recurring buys. This means the token should be able to initiate purchases at pre-determined intervals without manual intervention. The ideal candidate for this project should have: - Previous experience in creating tokens on the Solana blockchain - Expertise in developing smart contracts with specific features - Knowledge of the Solidity programming language - Understanding of the concept of Dollar Cost Averaging - Ability to deliver a secure and efficient...

    €357 (Avg Bid)
    €357 Oferta promedio
    17 ofertas

    I'm looking to build a web application (Super App) with ReactJS and Golang that will allow users to register, login, and manage their digital blockchain certificates. The digital blockchain certificates will be managed on the private Ethereum blockchain (which is created through our existing own tokenization platform). Additionally, the application should provide a separate portal for corporate/company HR to register and login to create new job posting and application system, where HR can view any incoming job application from the user who applied through our Super App. Besides, the HR can also search for any suitable candidates from the portal. All the data loaded from a centralised database storage (storing graduates details such as name, contact, courses, university, etc) Key feat...

    €31 / hr (Avg Bid)
    €31 / hr Oferta promedio
    97 ofertas
    BSC Token Stake w/ Referral System 3 días left
    VERIFICADO

    I'm looking for a skilled blockchain developer who can help me create a crypto stake plan with a referral program. The token will be based on the Binance Smart Chain (BSC) and follow the BEP20 standard. If you have already please send link Key Features: - Multi-level rewards: The referral program needs to accommodate a multi-level structure to incentivize different tiers of referrals. - Direct referral bonuses: Ensure that users get rewarded for directly referring new participants. - Performance-based incentives: The system should be able to track and reward users based on their performance within the program. - Plan package stake: The stake plan should be constructed in a way that users can select different packages for staking. Ideal Skills: - Deep understanding of blockchain tech...

    €286 (Avg Bid)
    €286 Oferta promedio
    37 ofertas

    I have a developer creating a membership site for me and I need a crypto payment solution. I want to accept 2 crypto tokens 1 will be at a cheaper rate than the other and will be a monthly payment but need a lifetime member option which will be at a higher rate. I just need something created where they can easily pay with crypto and after successful payment it will return to member area. Both tokens will be on bsc the first will be USDT and the second will be my projects token.

    €213 (Avg Bid)
    €213 Oferta promedio
    28 ofertas

    12 months ago I launched a token and after a moderate presale it failed when it went to market and is dead now. Seeing that the coin is dead I wish to unlock my liquidity which is still locked until a few days time with pinklock but I don't know how to access it. I will give all details before hiring so you can check and confirm the amount and will hire winner to help me retrieve the liquidity.

    €116 (Avg Bid)
    €116 Oferta promedio
    28 ofertas

    We have an Ethereum Smart Contract and a Learn To Earn program. We want to ensure that when users convert their earned points into our tokens, they pay the Transaction cost. However, since the functions are public, we are concerned that users can mint additional tokens on our contract. Thus, we want an expert dev to review our contract and recommend the ideal way to set these functions up. Additionally, we are using 1Inch for processing transactions and want the users to be charged a transaction fee. However, since 1inch doesn't support it, the only option is for the users to pay double transaction fee - one for their transaction and the other to pay us a fee. We would like the expert developer to help us find a solution to this as well, if possible.

    €17 / hr (Avg Bid)
    €17 / hr Oferta promedio
    19 ofertas

    I'm in need of a skilled web developer to create a web3 crypto sports betting website for me. The site should have the following features: - User registration and login system - Real-time odds for different sports like Football, Basketball, Tennis, and Cricket - Support for multiple cryptocurrencies for betting Additionally, I'd like the site to have the functionality to: - Offer a cash-out option - Seamlessly integrate with social media platforms Ideal candidate should have experience in developing betting websites, be knowledgeable in web3 and cryptocurrency integration, and have a good understanding of the sports betting world. Your design should be user-friendly and secure. Looking forward to your bids.

    €590 (Avg Bid)
    €590 Oferta promedio
    25 ofertas

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