Blockchain Jobs

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!

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    35 jobs found, pricing in USD

    I'm in need of a skilled individual who is proficient in blockchain and wallet analysis, specifically on the Arbitrum blockchain. The project involves analyzing transaction patterns and wallet balances and activities. Key Requirements: - Proficiency in blockchain analysis, particularly on the Arbitrum blockchain - Ability to identify patterns and trends in transactions - Proficient in analyzing wallet balances and activities Deliverables: - A comprehensive report that includes methodology, analysis, and conclusion - The report should be presented in a combination of written format and visual presentation (charts and graphs) Please note that I will provide you with access to the necessary pages and data on Arbiscan. Your task will be to fetch data, analyze it, and present it in a d...

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    I'm looking for an experienced NFT specialist who can sell unique NFTs. The ideal candidate for this task would be deeply familiar with the OpenSea platform, as this is my preferred marketplace for NFT sales. They should have a good understanding of how to market and cater to a diverse target audience including art collectors, crypto enthusiasts, and the general public, as well as traders and investors. To successfully carry out this project, the freelancer will need: - Expertise in NFTs and the digital asset landscape - Strong familiarity with the OpenSea platform and other NFT marketplaces - Proven experience in digital marketing and sales - Adequate understanding of art, crypto, and the general public's interests - An ability to connect with potential collectors, crypto enth...

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    I'm in need of a skilled Rust developer who can work on building a Dex on Solana. Ideal Skills: - Proficient in Rust - Experience in working with Solana - Understanding of building decentralized exchanges - Knowledge in blockchain technologies The main task is to construct a decentralized exchange on Solana. Experience in building Dex is a must, as well as having a good understanding of how to optimize trading pairs and match orders efficiently. Please provide examples of your past work that are relevant to this project. I would like to see the projects you've worked on and your experience in this field. A detailed project proposal would also be appreciated. Looking forward to working with a skilled Rust developer who can bring this project to life.

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    I am in need of a talented blockchain developer who can create a BEP20 Crypto Wallet with integrated smart contract capabilities. Key Requirements: - Cryptocurrency Support: The wallet should primarily support BEP20 tokens, enabling users to store and manage this particular type of cryptocurrency. - Smart Contract Functionalities: The smart contract within the wallet should enable contract deployment and execution. Ideally, I would like the smart contract to also have a specific feature for generating a consistent income for users. - Cross-Platform Accessibility: The wallet should be designed for mobile use, available on both iOS and Android devices. Ideal Skills and Experience: - Proficiency in BEP20 Token Development: Experience in creating and handling BEP20 tokens is crucial...

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    Flash usdt or btc 5 days left
    VERIFIED

    I'm seeking a skilled developer to create a BTC USDT flash application. The cryptos must show logo and valué on any wallet. Need to be transferible to any exchange wallet. Need to be kept on the wallet forever (negociable) and very important need to be tested to seal the deal.

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    I am seeking a proficient blockchain engineer on TON blockchain (The Open Network) to implement a wide array of smart contracts on my website. The successful freelancer will have extensive experience with: - Token creation and management - Decentralized finance (DeFi) protocols - Non-fungible tokens (NFTs) - Processes of Buying Jetton, conversions, NFT launches - Creating secondary marketplace - Burning NFTs ---------- About project: STONE on TON This project introduces an innovative approach by creating an efficient ecosystem for launching and selling collections of goods from various sources on the Ton blockchain. The project's combination of RWA, unique collections, buyer privacy, and proprietary storage provides convenience and security for project participants. Problem-...

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    solana nodejs code for multi-swap within same tx.

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    I'm looking to build a project on the Solana blockchain. The main goal of the project is to be a DeFi platform similar to polymarket.com. The key feature I'm looking to incorporate is price prediction algorithms. Key Points: - Develop a Decentralized Finance (DeFi) platform on Solana blockchain - Incorporate Price Prediction Algorithms as the main forecasting tool - The layout and functionalities of the platform should be similar to Polymarket Ideal Skillset: - Solid understanding of blockchain technology, particularly Solana - Proficient in DeFi development - Experience in implementing Price Prediction Algorithms - Familiarity with platforms like Polymarket and similar forecasting tools This project requires a freelancer with a deep understanding of DeFi platforms, blockch...

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    I'm looking to build a project on the Solana blockchain. The main goal of the project is to be a DeFi platform similar to polymarket.com. The key feature I'm looking to incorporate is price prediction algorithms. Key Points: - Develop a Decentralized Finance (DeFi) platform on Solana blockchain - Incorporate Price Prediction Algorithms as the main forecasting tool - The layout and functionalities of the platform should be similar to Polymarket Ideal Skillset: - Solid understanding of blockchain technology, particularly Solana - Proficient in DeFi development - Experience in implementing Price Prediction Algorithms - Familiarity with platforms like Polymarket and similar forecasting tools This project requires a freelancer with a deep understanding of DeFi platforms, blockch...

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    Job Description: We are seeking a skilled Blockchain Transaction Analyst to assist in analyzing hundreds of blockchain transactions. The primary task is to identify and compile a comprehensive list of all wallets that have received cryptocurrency from specified sources. Responsibilities: - Analyze blockchain transactions from various sources. - Identify and compile a list of wallets that have received cryptocurrency from the specified sources. - Ensure accuracy and completeness of the data. - Provide a detailed report of findings. Requirements: - Proven experience in blockchain analysis and transaction tracking. - Proficiency with blockchain explorers and analysis tools. - Strong analytical skills and attention to detail. - Ability to work independently and meet deadlines. - Excellent c...

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    I'm seeking a skilled developer to create a custom cryptocurrency coin with Ripple-like properties, and have it listed on a popular exchange. Key Features: - Smart contract capabilities: The ability to execute automated contracts without intermediaries. - Scalability: The coin should be able to accommodate a growing user base without sacrificing speed or efficiency. - Privacy and Anonymity: Implement robust privacy protocols, ensuring secure, confidential transactions. Ideal Skills and Experience: - Extensive experience in cryptocurrency development and blockchain technology. - Proficiency in creating custom coins and integrating them into exchange platforms. - Proven track record of implementing smart contract capabilities, ensuring scalability, and enhancing privacy and anonymity...

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    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. Bids: Please provide 3 links to your recent MERN/MEAN projects and provide some documentation or proof that you were the original developer of those 3 websites please. Tech: Front-end Framework: React.js with and State Management + ...

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    We are on the lookout for an exceptional Senior Golang & Blockchain Developer to join our innovative team. The ideal candidate will have a robust background in software development with more than 7 years of experience, a strong command over various programming languages, and excellent communication skills. Responsibilities: Develop, test, and deploy smart contracts and blockchain-based applications. Design and implement scalable and maintainable microservices architecture. Collaborate with cross-functional teams to deliver high-quality software solutions. Optimize backend processes using Golang for enhanced system performance. Ensure the integration of frontend and backend systems for seamless user experiences. Containerize and orchestrate microservices using Docker and Kubernetes. Sk...

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    I am working on a collaboration platform that will serve as a hub for individuals and small businesses. I need a skilled professional who can bring this vision to life through both design and development. Key Features: - Essential collaboration features such as file sharing, task management, and group chat are needed. - Extensive focus on user security: Incorporating End-to-End Encryption to ensure data privacy. - User Profiles: Users should be able to create and customize basic profiles, post updates, tag others, and use hashtags. - Proposal System: Implement a system for users to like/rate proposals, comment on them, and upload supporting documents/images. - Detailed Proposal Submission: A structured form for users to submit their proposals. - Blockchain Wallet Integration: Securely co...

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    I'm completely new to crypto mining but I have a strong interest in it. My main goal is to generate passive income through this method, but I'm also eager to learn more about the technology and support the network. I'm looking for a consultant who can guide me through the following aspects of crypto mining: • Mining hardware selection: I need assistance with understanding what kind of hardware is necessary for efficient mining. • Mining software setup and configuration: I require help setting up and configuring the mining software on my hardware. • Mining profitability analysis: I would like a detailed breakdown of the potential profitability of my mining operation, including the costs and potential returns. Ideal skills and experience for this job would in...

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    I'm looking for a skilled Solana Blockchain Developer to assist me with developing a dApp and smart contract. The project involves creating an NFT marketplace and integrating DeFi protocols. The scope of the project also includes integrating the Fork pump.fun. Your key deliverables will be: - Developing smart contracts for the NFT marketplace and DeFi protocols. - Creating the dApp, including UI/UX design and programming. - Integrating Fork as part of the Solana network. You will need to have a solid understanding of Rust and JavaScript/TypeScript, as well as experience in Solana network integration and dApp development. Previous work with NFT marketplaces and DeFi protocols is highly desirable. Please include examples of similar projects you've worked on in the past in your...

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    Jazba AI looking for Fullstack developer/AI developers/Blockchain developers who can build me a cutting-edge Web3 marketplace, integrated with AI capabilities, to cater for a broad spectrum of users. Key Skills & Experience: - Proficiency in Python, Angular.JS, , and experience in Machine Learning and AI. - Knowledge of Blockchain technologies like Solana and Ethereum. - Experience with Smart contract integration, Decentralized storage, and Tokenization of assets. - Ability to implement Generative AI and integrate with ChatGPT 4.0. - Proficiency in Third-Party Integrations like CRM, Lead Generation, Social Media, and Slack. - Previous experience with Android and iOS integration will be beneficial. The marketplace should be designed with the following features: - Smart contract integr...

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    I'm in need of a proficient programmer to build a feature-rich swap for my cryptocurrency project on the Solana blockchain. The swap will involve advanced functionalities including integrated liquidity pool management and yield farming features. Key requirements: - Development of a swap interface that is user-friendly and intuitive, allowing users to easily interact with the platform. - Implementation of advanced features such as integrated liquidity pool management and yield farming, enhancing the overall user experience. - Both smart contract audit and penetration testing to ensure the security and reliability of the swap. Ideal Skills: - Strong proficiency in Solana blockchain development and smart contract programming. - Prior experience in building cryptocurrency swaps, especi...

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    Launchpad Developer Needed 2 days left
    VERIFIED

    Our company is seeking an experienced developer to build a robust and user-friendly launchpad platform. The ideal candidate will have a strong background in blockchain technology, smart contract development, and platform integration. Responsibilities: - Develop and implement a secure, scalable launchpad platform. - Design and deploy smart contracts for token launches. - Ensure platform security and compliance with industry standards. - Collaborate with the team to integrate the platform with other services. - Provide ongoing maintenance and updates. Qualifications: - Proven experience in blockchain development. - Proficiency in smart contract programming (e.g., Solidity). - Strong understanding of platform security and scalability. - Excellent problem-solving and communication skills. - ...

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    I'm seeking a senior TON developer with expertise in smart contracts, Ton coin and Jetton. The ideal outcome is to integrate the frontend with an existing smart contract. Therefore, the person should be proficient in JavaScript, HTML/CSS and React. Key requirements and responsibilities: - Proficient in smart contracts, Ton coin and Jetton - Integrate the frontend with existing smart contract - Expertise in JavaScript, HTML/CSS and React If you're a seasoned TON developer who is also well-versed in frontend technologies like JavaScript and React, this could be a great opportunity for you.

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    I'm looking for a frontend developer with expertise in React and Vercel, who can also work on blockchain projects, particularly in Solana. The project is a game website targeting cryptocurrency enthusiasts. The backend is already developed using Strapi. Your main task would be to make the game functional on the frontend. Key Requirements: - Solid experience in frontend development with React and Vercel - Previous work on blockchain projects, specifically in Solana - Understanding of cryptocurrency and blockchain technology - Familiarity with developing game websites - Can work with ports and making show real-time updates to game as it happens (since it is multiplayer) Key Tasks: - Integrating login with wallet - Displaying previous games - Ensuring a seamless user experience - Abili...

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    I'm looking to create a versatile cryptocurrency exchange that stands out for its variety, security, and ease of use for beginners. - I would like the exchange to feature a wide range of the top 50+ cryptocurrencies, including Bitcoin, Ethereum, Ripple, and more. - The primary target audience for this exchange will be beginner investors, so the user interface should be intuitive, user-friendly, and provide ample educational resources. - Security is paramount. To ensure the safety of our users' funds, the platform should implement two-factor authentication. I am seeking a developer with experience in creating cryptocurrency exchanges, as well as a strong understanding of user experience and security protocols.

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    I'm seeking a senior TON developer with expertise in smart contracts, Ton coin and Jetton. The ideal outcome is to integrate the frontend with an existing smart contract. Therefore, the person should be proficient in JavaScript, HTML/CSS and React. Key requirements and responsibilities: - Proficient in smart contracts, Ton coin and Jetton - Integrate the frontend with existing smart contract - Expertise in JavaScript, HTML/CSS and React If you're a seasoned TON developer who is also well-versed in frontend technologies like JavaScript and React, this could be a great opportunity for you.

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    I'm seeking a skilled developer to create a with all features including coin staking feature, vip membership feature and project scoring feature, Also News section, refer coinofficial (for staking and news feature idea) . Please feel free to propose any programming languages or frameworks you believe are best suited for this project. Your suggestions will be greatly appreciated.

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    Hey, I'm currently developing a token on Solana called Kosher Token. Once that is complete, I would like to develop an app. I would like to get a quote for developing an app with you. The app will need to run on mobile (apk) and desktop (cloud). The MVP will include two products: the Kosher Wallet and Kosher Vendor. Need a quote for each product respectively. Please see UI design attached for reference. (Desktop and mobile versions will be very similar. We do not need two completely different designs) The landing page is already done: I only need a quote for the app. Please review the documents attached and ask any relevant questions you may have. Then please send me a rough estimate and timeline. I ignore all auto bids. I only engage with meaningful and relevant inquiries and quot...

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    i am looking for a solana dev requirements: •⁠ ⁠create a solana token that automatically sends a small amount of SOL to the token owners wallets on every transaction •⁠ ⁠⁠implement lock wallet feature, to stop someone from selling •⁠ ⁠create the token similar to SOLBULL, and with the functions mentioned above. idea: collect fees as token on each tx, these tax tokens need to be withdrawn separately into the wallet, so a script to withdraw tax tokens every X amount of time, then maybe once a day the wallet owner can sell tokens to get SOL or another automation can be created to sell tokens to get SOL if there is a better way you can think of, i would be open to hearing it.

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    I need a blockchain expert to develop a supply chain solution for my retail and manufacturing businesses. The system should have the following characteristics: - **Transparency and Traceability**: The system should allow for real-time tracking of goods and assets along the supply chain. It should provide clear visibility and accountability. - **Smart Contracts and Automation**: I need smart contract functionalities to automate certain processes within the supply chain, such as payment upon successful delivery or triggering alerts for restocking. The ideal candidate should have a strong background in blockchain development with experience in creating supply chain solutions. Knowledge of retail and manufacturing industries is a plus. I need this project completed as soon as possible.

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    I am looking to develop a system that employs blockchain technology to ensure the traceability of halal produce. This project is crucial as it will be used by consumers who want to be confident about the authenticity of the halal produce they purchase. Key Features: - **Blockchain Technology**: The system must harness the power of blockchain to track the entire journey of the halal produce from farm to end consumer. - **Source Tracking**: The primary focus is on tracking and displaying the source of the produce. This will help consumers to identify and verify the authenticity of the halal produce. Ideal Candidate: I am seeking a developer with expertise in blockchain technology, particularly in implementing traceability mechanisms. Experience in developing consumer-facing applications a...

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    I'm seeking a skilled developer to help create a peer-to-peer crypto exchange platform with wallet integration. Key Features: - The platform should support both Bitcoin and Monero. - A user-friendly wallet integration feature is essential. - A chat feature would be beneficial for real-time communication. Target Audience: - The portal will cater to individual investors and crypto enthusiasts. Ideal Skills and Experience: - Proficient in blockchain technology - Experience in developing cryptocurrency projects - Strong technical skills in creating secure platforms - Ability to incorporate essential features like a chat function Please provide examples of previous work in this field.

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    I'm in need of an experienced blockchain developer who's well-versed in Ethereum platform and smart contracts development. The main goal of this project is to create and implement smart contracts for a real estate-based use case. Key Requirements: - Proficient in Ethereum platform and smart contracts development - Prior experience in developing real estate-based applications is a huge plus - Ability to integrate with other blockchain networks such as Hyperledger or EOS The successful candidate will work closely with me to implement these smart contracts and ensure they meet all the necessary requirements. If you've got a strong background in blockchain development, especially with Ethereum, and a keen interest in real estate applications, I'd love to hear from you.

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    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 ...

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    I'm looking for a skilled blockchain engineer with significant experience in developing ERC20 tokens and NFTs. The purpose of these tokens will be for a medium-complexity gaming project, particularly focusing on in-game economies. Key Responsibilities: - Develop an ERC20 token: You will be responsible for creating a custom token that aligns with the requirements of the gaming project. - NFT Development: You should have a deep understanding of NFTs and be able to create unique, non-fungible assets for the game. Job Specifics: - Purpose: The main intention of these tokens is to be used within a medium-complexity game. - Industry Focus: The tokens are focused on the gaming industry, specifically for in-game economies. Ideal Candidate: - Proficient in ERC20 token development and NFT cr...

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    Approve is working, but after approving participate function is not working I can sh are the contract address and codebase if you need. After fixing , we will move to next step for revamping this site. If you read , start the proposal with "participate"

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    I'm in need of a skilled developer proficient in both Binance Smart Chain (BNB) and Ethereum, as the project involves creating a decentralized application on the Binance Smart Chain platform. Key Deliverables: - Develop a user-friendly decentralized application on the Binance Smart Chain platform - Implement necessary smart contracts for the application - Ensure seamless integration and functionality of the application Ideal Skills: - Proficient in Binance Smart Chain (BNB) and Ethereum - Hands-on experience in developing decentralized applications - Strong knowledge of smart contracts - Ability to ensure high-quality integration and functionality - Prior experience in developing for the Binance Smart Chain platform would be a plus Your expertise in BNB and Ethereum will be crucial...

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    I am looking for a skilled developer who is comfortable working with Nextjs, tailwindcss, and typescript to overhaul gambling site. Although specifics weren't mentioned for this project, the right candidate should be prepared to enhance the user interface, drastically improve performance and speed, as well as meticulously integrate blockchain technology. I want to revampe this website. If you have relevant portfolio, please share . you will be shortlisted Ideally, for this project: - Experience in developing for the online gambling sector is a must - Prowess in Nextjs, tailwindcss, and typescript will be necessary - Proficiency in blockchain technology is crucial - Experience in user interface and UX design may be advantageous By the end of this project, the site should hav...

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