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!

From 23,967 reviews, clients rate our Solidity Experts 4.87 out of 5 stars.
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    15 jobs found, pricing in AUD

    We are looking for NFT Smart Contract Developer Project Objective: Develop a smart contract for creating and managing unique NFTs (Non-Fungible Tokens) on the Ethereum blockchain platform. Key Requirements: NFT Creation: Implement a function to create new NFTs with unique identifiers, metadata, and associated attributes. Provide the ability to specify the owner of the NFT upon its creation. Ownership Transfer: Implement a function to transfer ownership of an NFT from one Ethereum address to another. Ensure mechanisms to protect against unauthorized transfers. Ownership Verification: Develop methods for verifying ownership of a specific NFT by a given Ethereum address. Provide public access to ownership data of NFTs. Metadata Handling: Ability to store metadata of NFTs, such as images...

    $16 / hr (Avg Bid)
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    21 bids
    Deploy sol files on 2 chains 6 days left
    VERIFIED

    We're dividing assets into fractions. We have .sol files related to smart contracts (ERC20 on Ethereum with a bridge on Gnosis). We're in search of an expert who can review these files and determine their functionality for deployment. Should this collaboration proceed smoothly, we're open to establishing a long-term partnership for technical support.

    $234 (Avg Bid)
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    10 bids

    I'm looking for a developer with in-depth experience in creating smart contracts on the Ethereum blockchain. Key Requirements: - Develop a multisend smart contract that supports ERC20 tokens. The contract should allow for the distribution of ERC20 tokens to multiple recipients in a single transaction. - Implement pause functionality as a security feature. This is crucial to protect the contract from any potential vulnerabilities or attacks. - We would like to be able to interact with the contract if possible (on etherscan) Ideal skills and experience: - Proficiency in Solidity, the programming language used for Ethereum smart contracts. - Prior experience in developing multisend contracts and incorporating pause functionality. - Knowledge of best practices for smart contract secur...

    $204 (Avg Bid)
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    7 bids

    We're dividing assets into fractions. We have .sol files related to smart contracts (ERC20 on Ethereum with a bridge on Gnosis). We're in search of an expert who can review these files and determine their functionality for deployment. Should this collaboration proceed smoothly, we're open to establishing a long-term partnership for technical support.

    $360 (Avg Bid)
    $360 Avg Bid
    17 bids
    Solidity expert needed 4 days left
    VERIFIED

    We're dividing assets into fractions. We have .sol files related to smart contracts (ERC20 on Ethereum with a bridge on Gnosis). We're in search of an expert who can review these files and determine their functionality for deployment. Should this collaboration proceed smoothly, we're open to establishing a long-term partnership for technical support.

    $265 (Avg Bid)
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    33 bids

    I'm in need of a versatile web3 token and NFT generator tool that can be compatible with various blockchain platforms. The tool should allow me to create, manage, and distribute different types of tokens including utility tokens, security tokens, collectible tokens, and NFTs. I need the following features to be incorporated in the tool: - Customizable token name and symbol. - Ability to set token supply and decimals. - Integration with a range of blockchain platforms (Ethereum, Binance Smart Chain, BASE, POLIGON, FANTOM, ARBITRUM, OPTIMISM, AVALANCHE AND SOLANA, RELATIVES TESTNETS). - Capability to create a liquidity pool. Ideally, you should have: - Advanced knowledge and experience with blockchain technology and token creation. - Proficiency in working with multiple blockchain ...

    $1145 (Avg Bid)
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    80 bids

    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...

    $217 (Avg Bid)
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    13 bids

    I need a proficient Solidity and Web3 developer to help build a smart contract on the Ethereum network. The primary functionality of the contract is to facilitate fund transfers and sharing. Ideal Skills and Experience: - Solid experience in Ethereum smart contract development - Expertise in Solidity and libraries - Familiarity with test networks I need to create a smart contract and wallet connection using metamask. Here's an example; On this link, they only can donate using a credit card or debit card. I want to pay with eth test network (using metamask) and the smart-contract is; Person A needs 2000ETH for their project with a deadline of 30 days and share the profit 10% after 10 days of the project to reach the goal of each ETH donated by another person, Person B donat...

    $810 (Avg Bid)
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    31 bids
    Expert Zk-snark Developer 3 days left
    VERIFIED

    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.

    $56 / hr (Avg Bid)
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    29 bids

    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...

    $55 / hr (Avg Bid)
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    49 bids

    I'm in need of someone who can create a small college project based on blockchain technology. I'll provide the codes and other stuffs required. The person just needs to debug some errors and do some front end and back end work. Key Requirements: - Capable of using Remix, CSS, and Java Script for the project. - Understanding of blockchain fundamentals, including user authentication, data encryption, and smart contracts. Please feel free to share your past work and experience related to blockchain, along with any detailed project proposals you might have.

    $11 (Avg Bid)
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    2 bids

    I'm in need of an experienced blockchain developer who can create a dapp and smart contract for a NFT project based on the Ethereum network. The focus of the project will be collectibles NFTs. I would also need a marketplace system integrated within the project to facilitate the selling of these NFTs. Required skills and experience: - Proficient in Ethereum blockchain development - Experience in NFT technology, particularly for Collectibles - Proven track record in creating dapps and smart contracts - Knowledge of creating NFT marketplace Your main tasks will include: - Developing a smart contract - Building a dapp - Implementing a NFT marketplace for collectibles Ideally, you have successfully completed similar projects in the past. Please provide samples or references whe...

    $966 (Avg Bid)
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    61 bids
    Need solidity developer 1 day left
    VERIFIED

    Need solidity developer for contract basis .. exp 3+ needed

    $19 / hr (Avg Bid)
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    15 bids

    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. ...

    $33 (Avg Bid)
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    5 bids

    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...

    $62 (Avg Bid)
    $62 Avg Bid
    4 bids

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