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Blockchain, is a technology that encompasses digital records or information, referred to as “blocks”, that are linked together securely and share the same network. This distributed ledger technology is the backbone of a new wave of innovation being implemented into our lives, with new disruptive applications and solutions seen in a growing number of industries. Clients may hire a Blockchain Developer to harness this power and build a secure digital platform tailored to their business needs.

A Blockchain Developer can create unique solutions leveraging blockchain technology to securely store, access, mine and distribute data in an efficient manner. They can leverage features such as blockchain tokens for payments, smart contracts for automated transactions, privacy layers and data protection techniques. Additionally, the expertise of a Blockchain Developer will ensure the project complies with industry standards, ensuring secure data and validation.

Here's some projects that our expert Blockchain Developer made real:

  • Creation of custom applications for fast and secure NFT (Non-Fungible Token) transactions
  • Developments of tools that allow synchronization with physical products using Bluetooth protocol
  • Integrations between wallets hosting cryptographic assets with ecommerce providers
  • The establishment of exploratory networks to provide insights into decentralized ecosystems
  • Developments to foster the growth of peer-to-peer energy trading networks

At Freelancer.com customers have posted amazing projects covering a variety of use cases related to blockchain utilising the Freelancer verified experts. With help from professionals on Freelancer.com customers can create unique projects addressing their business needs with safety, security and legality in mind. Rock your blockchain project today and hire an expert Blockchain Developer on Freelancer.com now!

De 75,217 opiniones, los clientes califican nuestro Blockchain Developers 4.85 de un total de 5 estrellas.
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    61 trabajados encontrados, precios en 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 Oferta promedio
    3 ofertas

    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...

    $552 (Avg Bid)
    $552 Oferta promedio
    18 ofertas
    Solana Coin Trading API Enhancement 20 horas left
    VERIFICADO

    I have an existing Python script utilizing the Jupiter API to buy Solana coins. However, the script is currently encountering issues in the purchasing process. I'm in need of a professional who can work on the following tasks: - **Debugging**: The current script needs debugging to resolve the issues preventing successful purchases and sell of Solana coins. - **Optimization**: I'm also looking for the script to be optimized for faster execution, particularly in the buying and selling process. I aim for the transactions to be conducted swiftly and efficiently. The ideal freelancer for this project should have: - Proficiency in Python programming - Experience with API integration, particularly with cryptocurrency exchanges - A strong debugging skill set - An understanding of and e...

    $28 (Avg Bid)
    $28 Oferta promedio
    30 ofertas
    Need to Build Token in solana 17 horas left
    VERIFICADO

    Token on solana Name : Make America Great Again Symbol: $Maga Supply : 1 billion Decimals : 9 Tax : 3% buy tax and 3% sell tax(3% to lp and 3% to marketing wallet) *Noone can hold more than 6.7%* (like a supply block) Marketing wallet : GQ5ZVUtoUeLvfAMmUxwMrSNnXacDYSwEZW2abJk2DKcW

    $83 (Avg Bid)
    $83 Oferta promedio
    1 ofertas

    As I venture into the cryptocurrency market, I am in need of a Node.js script that allows efficient Solana trades using the Jup V6 API. Key Requirements: - Build a Node.js script that can accurately execute market orders. - Indispensable ability to interact with the Jup V6 API specific to Solana token transactions. - Configure the script to be used with an existing wallet address of mine. Ideal freelancers for this project would have: - Strong proficiency in Node.js, ideally with prior experience in building scripts for cryptocurrency trades. - Familiarity with the Jup V6 API and its various functionalities, especially in relation to market orders. - Solid understanding of the Solana cryptocurrency token. By helping me to automate my Solana trading activities, you'...

    $378 (Avg Bid)
    $378 Oferta promedio
    79 ofertas

    Need an app from where user can trade crypto trading on almost 500+ coins/tokens and Also can trade Stock market, forex market etc.

    $1625 (Avg Bid)
    $1625 Oferta promedio
    30 ofertas

    I'm seeking a skilled blockchain developer to design a decentralized finance application, primarily being a cryptocurrency exchange. While particular functionalities were not indicated, let's make sure the platform includes common features such as Buying/Selling Cryptocurrencies, Secure Wallets for Storage, and Real-Time Pricing Tracker. The ideal candidate will have significant experience in creating such platforms, an understanding of blockchain and DeFi, and a commitment to secure, seamless user experiences.

    $20 / hr (Avg Bid)
    $20 / hr Oferta promedio
    4 ofertas

    I'm seeking an experienced freelancer to construct a swap program on the Polygon blockchain using Python. The core feature is: - Token Swapping MATIC/ABC token on Uniswap - Use Uniswap Universal Router suppoting V3 version. - Buy(purchasing abc with matic), sell (matic with abc). The code is to check the balances of matic and abc token in metamask's personal wallet before and after buy (or sell). - Monitored and recorded on polygon scanner after the action. - GUI, no site required. Only python code. - Python version should be , Web3 version is recommended as 5.29.0. I'm in need of a developer who is proficient in Polygon blockchain technology, Python programming, and who is well-versed in cryptocurrency transactions. The ideal candidate would have prior experienc...

    $158 (Avg Bid)
    $158 Oferta promedio
    53 ofertas

    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.

    $518 (Avg Bid)
    $518 Oferta promedio
    21 ofertas

    As an advanced-level trading enthusiast, I am currently seeking an expert who is experienced in the Solana environment. Key Responsibilities: - Formulate a long-term position trading strategy on Solana. Ideal Candidate: - Has proven experience in trading on Solana - Understands how to effectively formulate and implement long-term trading strategies - Offers expertise in portfolio optimization for maximizing profits This is an excellent opportunity for talented traders who can demonstrate a track record of success on Solana. I am ready to move forward as soon as I find the right person for this role.

    $35 / hr (Avg Bid)
    $35 / hr Oferta promedio
    10 ofertas

    I am looking for a skilled developer to create a fully tested and secure website (frontend, backend + admin panel) with no bugs or issues using the MERN Stack. The key features of the front end design include a responsive design, user-friendly navigation, and custom animations. For the backend it would be clean, and fast high quality code with comments and good organisation and readability. The ideal candidate will have experience working with tight deadlines, provide constant high quality updates and be able to deliver quality work within a short timeframe. Tech: Front-end Framework: React.js with + Typescript Styling: Tailwind CSS Back-end Framework: Node.js with Database: MongoDB Goal: Build a cryptocurrency gambling website from PSD + Figma designs and requirements provided and ...

    $5640 (Avg Bid)
    $5640 Oferta promedio
    36 ofertas

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