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!

Từ 23,766 nhận xét, các khách hàng đã đánh giá Solidity Experts 4.86 trên 5 sao.
Thuê Solidity Experts

Bộ lọc

Tìm kiếm gần đây của tôi
Lọc theo:
Ngân sách
đến
đến
đến
Loại
Nhiều kỹ năng
Ngôn ngữ
    Tình trạng công việc
    26 công việc được tìm thấy, giá theo USD

    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...

    $43 (Avg Bid)
    $43 Giá đặt trung bình
    3 lượt đặt giá

    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...

    $492 (Avg Bid)
    $492 Giá đặt trung bình
    16 lượt đặt giá

    As a blockchain expert, I am looking for a seasoned developer with specific experience in developing on the Cosmos SDK. My goal is to create a new blockchain, incorporating smart contracts functionality and custom token creation. Ideal Skills: - Strong background in blockchain technology, particularly in the Cosmos SDK - Proficient in developing custom tokens and smart contracts - Proven experience in creating new blockchains - Familiarity with decentralised applications is a plus You need to have a good understanding of blockchain concepts, and have a portfolio that demonstrates your ability to handle similar projects. Please provide a brief overview of your previous experience with Cosmos SDK and new blockchain development in your bid.

    $465 (Avg Bid)
    $465 Giá đặt trung bình
    19 lượt đặt giá

    I'm seeking a seasoned developer with extensive experience in the Cosmos SDK. The project entails a range of tasks including wallet integration, blockchain development and smart contract deployment. Your primary focus will be ensuring these are seamlessly integrated into the platform. Key Responsibilities: - Implement Wallet Integration: You must have a thorough understanding of how to integrate wallet services into the Cosmos SDK. - Develop Blockchain: Experience in developing blockchains using the Cosmos SDK is essential. You will be responsible for creating a robust and secure blockchain. - Deploy Smart Contracts: Your expertise in deploying smart contracts using the Cosmos SDK will be crucial to this project's success. Deliverables: - Seamless integration of wallet services...

    $516 (Avg Bid)
    $516 Giá đặt trung bình
    21 lượt đặt giá

    I am seeking a proficient and experienced Cosmos SDK professional. The primary objective is to integrate the Cosmos SDK with our existing web application. Key Responsibilities: - Utilize your understanding of blockchain technology to seamlessly integrate Cosmos SDK with our web application. - Ensure that the integration enhances the performance and functionality of our platform. - Collaborate with our team to implement the integration in a timely manner. Ideal Skills and Experience: - Deep knowledge of blockchain technology, specifically in relation to the Cosmos SDK. - Proficiency in Golang programming language to effectively carry out the integration. - Prior experience in integrating the Cosmos SDK with existing web applications. - Good communication skills and a collaborative workin...

    $527 (Avg Bid)
    $527 Giá đặt trung bình
    22 lượt đặt giá

    [READ BEFORE BIDDING PLEASE] I’m looking for an expert in decentralized finance (DeFi) to build a swap&bridge platform on Base using OP stack Superchain. This project needs to be completed as soon as possible. Key Specifications: - Using latest version - The platform should feature token swapping and Bridge functionalities. - Responsive on pc browser and on phone - The system should allow users to seamlessly swap various tokens. - While I haven't identified specific token standards yet, your suggestions based on prior experience are welcomed. Desired Skills and Experience: - Experience building DeFi swap sites. - Understanding of OP Superchain. - Effective communication and timely delivery.

    $488 (Avg Bid)
    $488 Giá đặt trung bình
    117 lượt đặt giá

    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.

    $411 (Avg Bid)
    $411 Giá đặt trung bình
    74 lượt đặt giá

    I'm looking for a seasoned blockchain expert, particularly one with considerable expertise with custom blockchain development.

    $533 (Avg Bid)
    $533 Giá đặt trung bình
    54 lượt đặt giá

    EL bot debe poder operar en varios DEX usando flashloans como caracteristica pricipal, las oportunidades de las transacciones las debe buscar en los mempool de los contratos inteligentes de cada DEX. Tambien debe poder hacer frontrunning de las transsacciones The bot must can operate on many DEX using flashloans like principal function, the oportunities of transaction have to look for in the mempool of the Contratcs of the DEX. must can do frontrunning,and sandwich attack

    $149 (Avg Bid)
    $149 Giá đặt trung bình
    22 lượt đặt giá
    Blockchain Expert for Security API Creation 3 ngày left
    ĐÃ XÁC THỰC

    I am in need of a skilled blockchain expert who can develop an efficient security API for me. Despite the specifics not being defined yet, I envisage that the APIs will need to offer robust security features. Thus, experience in scalable security infrastructure could be beneficial. Ideally, you will: * Be proficient in Solidity programming - it's crucial for this project. * Have a deep understanding and experience with API security. * Have the ability to design an API with robust security features. * Provide value from the experience to incorporate advanced features. If you possess these skills and have an innovative mindset, please make a bid. While not necessary, including past work, detailed project proposals or relevant experience that you have had could increase your chances o...

    $13 / hr (Avg Bid)
    $13 / hr Giá đặt trung bình
    20 lượt đặt giá
    Polygon Smart Contract Audit 3 ngày left
    ĐÃ XÁC THỰC

    We are looking for an expert in smart contracts, specifically those deployed on the Polygon blockchain. Your application should include past work that demonstrates your experience in this field.

    $534 (Avg Bid)
    $534 Giá đặt trung bình
    126 lượt đặt giá
    Need to complete project 3 ngày left
    ĐÃ XÁC THỰC

    I have a pre-sale project. Staking, pooling, and governance must be completed. It is not yet complete and has not been deployed to servers. If you have good experience, please check the project and let me know the budget and time to complete the project. Share the repository. And I would like to hear your advice to complete the project successfully. I want to finish it within 3 months. Requirements Technologies: Frontend, Blockchain, Web3, Backend, Database, Solidity, API Integration. thank you

    $23 / hr (Avg Bid)
    $23 / hr Giá đặt trung bình
    124 lượt đặt giá

    I'm seeking a competent blockchain developer with strong experience in creating smart contracts on the Ethereum network, or what I refer to as the base network. The primary objective of this project is the automation of financial transactions. This smart contract should be proficient in not only automating these transactions but should also possess the ability to interact with other smart contracts for the seamless execution of transactions. Possessing a keen understanding of the technical aspects involved in swapping one type of token for another, and staking and unstaking tokens would be beneficial but it's not a requirement for this particular job. IDEAL SKILLS AND EXPERIENCE: - Extensive experience in developing smart contracts on the Ethereum network - Proficient in Soli...

    $19 (Avg Bid)
    $19 Giá đặt trung bình
    6 lượt đặt giá
    Ethereum DeFi Smart Contract Expert 3 ngày left
    ĐÃ XÁC THỰC

    I'm in need of a seasoned blockchain developer with in-depth Ethereum knowledge to build a smart contract for a decentralized finance platform. This Dapp will be entirely decentralized, free from any central authority influence, hence it’s a critical aspect of this project. Key Requirements: * Extensive experience in smart contract development on Ethereum * In-depth understanding of DeFi protocols * Skilled in building fully decentralized platforms The successful candidate will have an extensive understanding of decentralized systems, Ethereum blockchain, and DeFi platforms. Solid experience in smart contract development is a must. Your main task will be constructing a smart contract that underpins my DeFi platform, ensuring maximum security and efficient resource utilizatio...

    $262 (Avg Bid)
    $262 Giá đặt trung bình
    4 lượt đặt giá

    I'm looking for an experienced blockchain developer with expertise in Ethereum smart contract API development. Key API features: - Ability to scan various smart contract code - Honeypot detection - Malicious code detection Required skills: - Proficiency in Solidity and Python - Blockchain development experience, particularly with Ethereum - Demonstrated expertise in API integration - Familiarity with security issues specific to smart contracts If you're a detail-oriented blockchain expert with crowdfunding experience, I'd love to hear from you.

    $15 / hr (Avg Bid)
    $15 / hr Giá đặt trung bình
    28 lượt đặt giá

    **Project Title:** Automated Crypto Arbitrage Bot with Flash Loan Integration and Desktop User Interface **Project Description:** I'm seeking a skilled blockchain developer with strong Python expertise to build a cutting-edge cryptocurrency arbitrage bot. This bot will leverage flash loans for automated profitable trades on major decentralized exchanges. **Core Functionality:** * **Real-time Monitoring:** The code must continuously monitor cryptocurrency prices across all major decentralized exchanges (DEXs). * **Arbitrage Detection:** The bot will use Python for data analysis to identify profitable arbitrage opportunities where a significant price difference (exceeding 0.09% + gas fees) exists for the same cryptocurrency across different DEXs. * **Flash Loan Integration:** The...

    $596 (Avg Bid)
    $596 Giá đặt trung bình
    92 lượt đặt giá
    Web3 Solidity Tutor for Hands-On Learning 2 ngày left
    ĐÃ XÁC THỰC

    I'm seeking an expert in Web3 and Solidity to lead me through practical exercises in Smart contract development, Decentralized applications (dApps), and Blockchain integration. The ideal candidate must be: - Proficient in Solidity and Web3 with a strong background in the deployment of smart contracts and dApps. - Capable of explaining complex concepts in an understandable way, and guiding through practical exercises, and have patience. - Experienced in real-world projects that demonstrate the successful application of blockchain technology. Given my basic knowledge in the field, I'm looking for a tutor who can help me further develop my skills through hands-on experience by guiding me through building a smart contract using 'ThirdWeb' SDK platform. I'm exc...

    $34 / hr (Avg Bid)
    $34 / hr Giá đặt trung bình
    88 lượt đặt giá

    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...

    $131 (Avg Bid)
    $131 Giá đặt trung bình
    30 lượt đặt giá

    I am actively seeking a co-founder who can demonstrate a high level of proficiency in multiple programming languages (including Python, Java, JavaScript, Golang, C Programming, Blockchain, Ethereum, Bitcoin, C#, C++, Swift, Kotlin, Rust, Dart, Flutter, and Smart contract) to assist in building between 7-12 new and unique ideas that I'm sure will have millions of online downloads. **** DISCUSSION OF HOW THE OWNERSHIP WILL BE SPLIT WILL BE PRIMARY. ONE TIME/ONE-OFF PAYMENT OF 100 DOLLARS (80 POUNDS) WILL BE GIVEN TO THE CHOSEN CO-FOUNDER AS A WELCOMING/CO-FOUNDER PARTNERSHIP FEE**** Key Requirements: • Extensive technical and programming skills, with a focus on a variety of programming languages. • Familiarity and comfort working with Blockchain, Ethereum, Bitcoin, and Smar...

    $114 (Avg Bid)
    $114 Giá đặt trung bình
    100 lượt đặt giá

    I'm looking for an expert developer to build a copy trade and front running bot that works on Solana. The bot needs to copy trades from a wallet that is using a custom program to buy/sell tokens. In addition to copying trades, the bot will also have to buy and sell before the target wallet. So the bot should use Gulf Stream to search on pending txs. I'm looking for an experienced programmer who has already created something similar. THIS IS IMPORTANT: If you have experience in developing such bots, when you contact me please send proof of your work (videos, transaction records) and your pricing for a project like this.

    $437 (Avg Bid)
    $437 Giá đặt trung bình
    84 lượt đặt giá
    Create token on TRON (TRX) network 1 ngày left
    ĐÃ XÁC THỰC

    We are seeking a skilled blockchain developer to create a custom TRON (TRX) token that incorporates a range of advanced features and functionalities. The ideal candidate will have experience with TRON blockchain development and a deep understanding of smart contract programming. Features Required: Mintable: The token should be capable of creating new tokens to be added to the total supply. Burnable: It should allow tokens to be "burned", effectively removing them from the total supply. Pausable: The contract should enable transactions to be paused, a crucial feature for emergency or maintenance purposes. Permit: Implementing EIP-2612 permit function for allowing spending of tokens via signatures. Flash Minting: Ability to mint tokens temporarily within a transaction without per...

    $248 (Avg Bid)
    $248 Giá đặt trung bình
    28 lượt đặt giá

    I am seeking an experienced blockchain developer with strong knowledge in BSC Smart Contracts to help me build an engaging affiliate program. This project requires a robust strategy to increase user adoption and revenue. The main goal will be community building to drive user adoption. While the specific strategy was not provided in the brief, potentially effective methods could include social media engagement, forums, and events. Therefore, the ideal candidate should have: -A proven track record in creating successful affiliate programs -Proficient in social media engagement and creating online forums -Experience in hosting digital events and meetups I need someone who can begin immediately and the turnaround time should be prompt, as the completion of this project is ASAP.

    $81 (Avg Bid)
    $81 Giá đặt trung bình
    5 lượt đặt giá
    Advanced TRON (TRX) Token Development 1 ngày left
    ĐÃ XÁC THỰC

    We are seeking a skilled blockchain developer to create a custom TRON (TRX) token that incorporates a range of advanced features and functionalities. The ideal candidate will have experience with TRON blockchain development and a deep understanding of smart contract programming. Features Required: Mintable: The token should be capable of creating new tokens to be added to the total supply. Burnable: It should allow tokens to be "burned", effectively removing them from the total supply. Pausable: The contract should enable transactions to be paused, a crucial feature for emergency or maintenance purposes. Permit: Implementing EIP-2612 permit function for allowing spending of tokens via signatures. Flash Minting: Ability to mint tokens temporarily within a transaction without per...

    $177 (Avg Bid)
    $177 Giá đặt trung bình
    8 lượt đặt giá
    BSC Smart Contract Affiliate Program 1 ngày left
    ĐÃ XÁC THỰC

    I am in need of an expert to develop an affiliate program on the Binance Smart Chain (BSC) platform. The key function of this program is to facilitate a multi-level marketing system with a depth of 10 levels. Key Features: - Multi-Level Marketing: The system must support a network of affiliates up to 10 levels deep. Ideal Candidate: - Deep understanding of Smart Contracts within the Binance Smart Chain ecosystem. - Proven experience in creating multi-level marketing systems. - Able to deliver within a reasonable timeframe.

    $97 (Avg Bid)
    $97 Giá đặt trung bình
    5 lượt đặt giá

    I've successfully created an ERC-20 token on the Ethereum network, utilizing the OpenZeppelin Contracts Wizard and the Remix IDE for its development. The token is live, but I'm encountering issues with its representation on Etherscan.io. Specifically, I'm facing challenges with the ABI details and updating the token's image on Etherscan. It seems there's a mismatch or an incorrect setup that's preventing these elements from being correctly recognized or displayed. I'm looking for an Ethereum and Etherscan expert who can: Quickly diagnose the issue with the ABI and token image update on Etherscan. Provide a detailed solution and assistance in implementing the necessary adjustments to resolve these issues. Advise on best practices for token management an...

    $40 (Avg Bid)
    $40 Giá đặt trung bình
    8 lượt đặt giá
    ERC-20 Token Troubleshooting on Etherscan 4 giờ left
    ĐÃ XÁC THỰC

    I've successfully created an ERC-20 token on the Ethereum network, utilizing the OpenZeppelin Contracts Wizard and the Remix IDE for its development. The token is live, but I'm encountering issues with its representation on Etherscan.io. Specifically, I'm facing challenges with the ABI details and updating the token's image on Etherscan. It seems there's a mismatch or an incorrect setup that's preventing these elements from being correctly recognized or displayed. I'm looking for an Ethereum and Etherscan expert who can: Quickly diagnose the issue with the ABI and token image update on Etherscan. Provide a detailed solution and assistance in implementing the necessary adjustments to resolve these issues. Advise on best practices for token management an...

    $62 (Avg Bid)
    $62 Giá đặt trung bình
    5 lượt đặt giá

    Các bài viết khuyên đọc dành cho bạn

    If you want to stay competitive in 2021, you need a high quality website. Learn how to hire the best possible web developer for your business fast.
    11 MIN READ
    Learn how to find and work with a top-rated Google Chrome Developer for your project today!
    15 MIN READ
    Learn how to find and work with a skilled Geolocation Developer for your project. Tips and tricks to ensure successful collaboration.
    15 MIN READ