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!

Từ 68,237 nhận xét, các khách hàng đã đánh giá Blockchain Developers 4.83 trên 5 sao.
Thuê Blockchain Developers

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!

Từ 68,237 nhận xét, các khách hàng đã đánh giá Blockchain Developers 4.83 trên 5 sao.
Thuê Blockchain Developers

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    9 công việc được tìm thấy

    I need an experienced blockchain developer to create a new cryptocurrency. Key Requirements: - Develop a secure and scalable cryptocurrency - Expertise in blockchain technology and cryptocurrency protocols - Knowledge of tokenomics and market trends - Experience with smart contracts and blockchain integration - Ability to provide ongoing support and updates Ideal Skills: - Proficiency in programming languages like Solidity, Python, or JavaScript - Strong understanding of cryptography and decentralized networks - Previous experience in launching successful cryptocurrencies Please provide examples of past work and relevant qualifications.

    $125 Average bid
    $125 Giá đặt trung bình
    11 lượt đặt giá
    Advanced Tokenization Developer Needed
    11 ngày left
    Đã xác thực

    Tokenization - we are looking for a developer who is intimately familiar with the token mechanics of minting, supply, partial-failure recovery and settlement state machine, compensating transactions, financial state machines, idempotent settlement, payment reconciliation, saga-style workflows, exactly-once economic effects, or recoverable partial commits, Financial Limit Enforcement Under Concurrency, Failure Injection and Adversarial Testing etc. You get the idea... Please no fakeus or pretenders ... This is a significant project and we do not need additional complexity of unstable or dishonest people .... if you understand what we need and can demonstrate what you have done... we are all ears and happy to be accommodative.... No generic proposals will be considered. We are not purp...

    $8 - $13 / hr
    Niêm phong
    $8 - $13 / hr
    24 lượt đặt giá
    Custom Crypto Payment Gateway Integration
    2 ngày left
    Đã xác thực

    I’m building a small-scale payment gateway that lets shoppers on my e-commerce site pay with TRX, Ethereum, BTC, XMR, and LTC. The focus is on a clean, dependable setup rather than heavy, enterprise-level security; standard encryption, confirmation checks, and basic anti-fraud routines will be enough for this first release. The gateway must handle both one-time and recurring payments. I’ll need simple merchant controls—think invoice generation, transaction status, and refund trigger—plus a lightweight REST or GraphQL API so my front-end can display QR codes, wallet addresses, and live confirmation counts without page reloads. Because I’m turning this into a standalone service for my own products, the codebase should be modular: a core processing service (No...

    $478 Average bid
    $478 Giá đặt trung bình
    165 lượt đặt giá

    I’m compiling a knowledge pack on Web3 with an emphasis on blockchain technology, and the section still missing is a deep-dive into scalability. I want a clear, beginner-friendly yet technically accurate overview of today’s scalability approaches and how they intersect with Delegated Proof of Stake (DPoS) networks. Your task • Explain the core scalability challenges—throughput, latency, storage growth, and network bandwidth—in plain language. • Describe the main strategies used to overcome them (layer-1 optimisations, sharding, sidechains, roll-ups, etc.), then relate each strategy to DPoS systems such as EOS, TRON, or BNB Chain. • Detail how validator delegation, block production scheduling, and incentive design in DPoS influence performance a...

    $26 Average bid
    $26 Giá đặt trung bình
    19 lượt đặt giá

    Senior Solidity/DeFi Engineer Needed — Autonomous ETH/USDC Flash-Loan Arbitrage Bot Looking for an experienced Solidity/DeFi developer to build an autonomous ETH/USDC flash-loan arbitrage bot using protocols such as Aave and Uniswap. Requirements: * Solidity + Python/Node.js * Flash loans and DEX arbitrage * Atomic transactions * MEV/slippage protection * Gas optimization * Ethereum mainnet infrastructure * Web dashboard for monitoring P/L and transactions * Strong smart-contract security experience The system should identify legitimate price inefficiencies, simulate trades, execute profitable opportunities, and automatically repay flash loans. Important: Security-focused project. No unauthorized exploitation, oracle manipulation, protocol bypasses, or theft of funds. Please pr...

    $491 Average bid
    $491 Giá đặt trung bình
    120 lượt đặt giá
    AI Coder & Web3 Dev for DEX Arbitrage Bot
    1 ngày left
    Đã xác thực

    I need an experienced AI coding agent specialist and Web3 developer to complete an existing multi-chain DEX arbitrage bot. The project is already partially built. I have existing Node.js/JavaScript code, Solidity smart contracts, flash-loan logic, scanners, a detailed technical architecture, research, and GitHub repositories that can be used as references. The system will monitor multiple DEXs across EVM chains, maintain local pool state, detect and simulate price movements, identify profitable same-chain arbitrage opportunities, calculate optimal trade size and net profit after all costs, use flash loans where appropriate, and execute trades through smart contracts with profit protection. The system also needs shadow mode, automated testing, latency/performance tracking, opportunity an...

    $331 Average bid
    NDA
    $331 Giá đặt trung bình
    131 lượt đặt giá

    We are looking for an experienced Web3/Blockchain Developer to build a real Web3 project from scratch. We need a professional website with a custom utility token, smart contract, tokenomics, wallet connection and basic Web3 functionality. The project should be secure, responsive and ready for actual deployment. We already have the basic project concept and requirements; the selected developer will work with us to finalize the technical architecture and develop the complete product. Requirements The project should include a custom token and smart contract, professional Web3 landing website, tokenomics section, roadmap, whitepaper, wallet connection, token information, basic user dashboard and required Web3 integrations. The token should be deployed on a suitable blockchain such as BNB Cha...

    $10 / hr Average bid
    $10 / hr Giá đặt trung bình
    41 lượt đặt giá

    We are looking for an experienced Senior IT & Executive Recruiter to join our remote recruitment team on a part-time basis. This role is ideal for a recruiter with strong experience in IT, technology, blockchain, and Web3 recruitment, particularly someone who is skilled at identifying and engaging senior-level and C-suite professionals across international markets. The primary focus of this position will be proactively sourcing qualified candidates through LinkedIn and other professional networks, conducting initial introductory calls, evaluating candidate fit, and providing clear candidate feedback to the recruitment team. You will support recruitment projects across the IT, software, blockchain, Web3, fintech, gaming, and emerging technology sectors, with a particular focus on C-leve...

    $34 / hr Average bid
    $34 / hr Giá đặt trung bình
    22 lượt đặt giá

    We are seeking an experienced blockchain/full-stack team to build , an institutional Real-World Asset tokenization platform focused initially on ultra-high-purity Copper Powder and high-purity Nickel Wire. The developer must deliver: public website, CMS/admin portal, industrial-metal registry, Digital Asset Passports, ERC-20 smart contracts, configurable tokenomics, institutional whitepaper, future Proof-of-Reserves and redemption modules, fully functional iOS and Android apps, testing, deployment, manuals, training and final handover. ReserveChain is in the Estonia pre-incorporation/prelaunch stage. Final company details, legal structure, token classification, token-holder rights, laboratory reports, ownership records, valuations, custody, insurance, reserve confirmations, offering term...

    $1500 Average bid
    $1500
    233 bài tham dự

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