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 75,371 opiniones, los clientes califican nuestro Blockchain Developers 4.83 de un total de 5 estrellas.
Contratar a 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!

De 75,371 opiniones, los clientes califican nuestro Blockchain Developers 4.83 de un total de 5 estrellas.
Contratar a Blockchain Developers

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    12 trabajos encontrados

    I need a seasoned blockchain developer who can jump in right now and finish a full integration with the ZEC blockchain within the next 24 hours. The target is a running web application that also relies on its own backend/database, so you will be wiring both layers to the blockchain and handing back a working, fully tested build. Scope • Connect my existing web front-end to ZEC so transactions post and confirm in real time. • Sync the app’s current database records with on-chain data, keeping both sides consistent. • Provide a quick walk-through (video or call) and concise deployment notes so I can reproduce the setup. Fixed budget is ₹10,000 and the clock starts the moment you accept. Please respond only if you have proven ZEC (or similar UTXO-based) experience...

    $215 Average bid
    $215 Oferta promedio
    19 ofertas

    I need a full-stack developer who can build a launchpad. You should be familar with experience with and pump fun logic We will have uniswap v2 pool and classic mode as Please give us the quote and timeline to build this launchpad

    $21 / hr Average bid
    $21 / hr Oferta promedio
    71 ofertas

    We are seeking an experienced Smart Contract Engineer to support the continued development of a Web3 developer reputation platform. The platform is currently under active development and has not yet been deployed publicly. It is designed to create verifiable developer profiles using technical contributions, wallet activity, smart contract deployments, project history, attestations, and other professional evidence. The selected engineer will review the existing smart contract architecture, identify security and design improvements, and contribute to the development of reliable on-chain reputation features. Key Responsibilities Develop and maintain contracts for developer profiles, attestations, credentials, reputation records, and verification workflows. Implement secure minting, owner...

    $28 / hr Average bid
    Acuerdo de Confidencialidad
    $28 / hr Oferta promedio
    6 ofertas
    Flash TRC20 Token
    5 días left
    Verificado

    I need a Flash-style TRC20 token built on the Tron blockchain that is both burnable and protected by multi-signature access. My priority is to have the contract coded, fully tested, and ready for deployment as quickly as possible without compromising security or adherence to the official TRC20 standard. Please write the contract in Solidity, comment it clearly, and supply a brief README so I can redeploy or verify it myself later. A small, self-contained test script (TronBox, Hardhat, or a comparable framework) that proves the burn function and the multi-sig requirement are working will speed up my review. Deliverables: • Auditable Solidity source code implementing TRC20 with burnable capability and multi-sig control • Compiled bytecode, ABI, and deployment steps • A s...

    $532 Average bid
    $532 Oferta promedio
    22 ofertas

    Project Title Need 10 High-Quality Technology & Crypto Articles on DA 70+ Websites Project Description We are looking for an experienced SEO content and guest-posting specialist to publish 10 high-quality articles on established websites with Domain Authority (DA) 70+. The articles will be focused on Technology, Cryptocurrency, Blockchain, Web3, FinTech, and related topics. Project Requirements 10 articles to be published on 10 different websites. Each website must have DA 70+. Websites should have real organic traffic and genuine authority. Relevant websites in technology, crypto, blockchain, finance, fintech, business, or related niches are preferred. Articles must be original, well-written, informative, and SEO-friendly. Content should be professionally written and provide genuin...

    $39 Average bid
    $39 Oferta promedio
    17 ofertas

    PROJECT TITLE: Video Creator Needed for Carbon Launchpad – Product Demo, Review & Promotional Videos PROJECT OVERVIEW: I am looking for a skilled video creator/content creator to produce professional demo, review, and promotional videos for my product, Carbon Launchpad. Carbon Launchpad is a blockchain/crypto-focused launchpad platform. I need someone who can understand the product, explore the platform, and turn its features into engaging video content that is easy for both crypto users and newcomers to understand. This is not simply a screen-recording job. I want the videos to feel like genuine product reviews/demos with professional editing, clear explanations, strong visuals, and good pacing. WHAT I NEED: I am looking for multiple types of videos: 1. PRODUCT DEMO VIDEO...

    $64 Average bid
    $64 Oferta promedio
    3 ofertas

    Role: Bring in clients for custom enterprise software, AI systems, and platform engineering projects — you pitch, we architect and deliver. Who you'd be selling for: An engineering-led technology partner (India-based, global delivery) with 50+ years of combined leadership experience across the team, serving 5+ industries. This isn't a design agency or a body-shop — the team leads with architects and senior engineers, not delivery managers, and positions as a long-term technical partner rather than a vendor. What you're selling — real, differentiated capability across four areas: Enterprise Platform Engineering — custom SaaS, API/systems integration, multi-tenant architecture, legacy modernization (proven up to 40% reduction in operational fragmenta...

    $24 Average bid
    $24 Oferta promedio
    6 ofertas
    Crypto Flash Education Software
    1 día left
    Verificado

    I’m putting together a “flash-style” application that lets adult learners explore core cryptocurrency concepts in a classroom setting. The aim is to keep everything simple enough for first-time students yet authentic enough that they see real-world mechanics in action. Here’s what I need the build to cover: • Data encryption built in from the ground up so students can encrypt and decrypt sample strings and immediately view the results. • Basic blockchain integration that spins up a local test chain, writes a few dummy transactions, and then visualises block creation. • A small, self-contained wallet module that can generate keys, sign test transactions, and show balances—all within the local sandbox, no live coins involved. The tool only ...

    $1095 Average bid
    $1095 Oferta promedio
    95 ofertas

    The goal is to launch a new TRC-20 cryptocurrency on the Tron network that ships with three core capabilities: native wallet support, real-time transaction tracking, and an on-chain staking mechanism. Token creation should follow current best practices for Tron smart contracts, including upgradability and pausable safeguards. Once the contract is live, I will need seamless wallet integration so holders can store, send, and receive the coin through both mobile and web extensions (TronLink, Trust Wallet, etc.). A lightweight block-explorer style dashboard or API that surfaces transfers, balances, and staking statistics in real time must accompany the launch so activity is always transparent. Staking is central to the token’s utility: users should be able to lock their balance for...

    $694 Average bid
    $694 Oferta promedio
    16 ofertas

    Investor Research & Lead Generation – 10,000 Qualified Leads We are looking for an experienced Investor Research & Lead Generation Specialist to build a database of up to 10,000 high-quality, relevant, and verified investor leads. Target Locations Mainland China, Singapore, Hong Kong, Russia, Japan, South Korea and Dubai/UAE. Target Investors:- Angel Investors Venture Capital (VC) investors Family Offices FinTech-focused funds Crypto / Web3 / Blockchain funds / Digital Asset funds Perpetual/Derivatives/Stocks Exchange Strategic / Corporate investors Stablecoin investors Investors should have demonstrated investment interest or experience in: FinTech, Crypto, Blockchain, Web3, Digital Assets, Trading, Exchanges, Derivatives, Capital Markets, Financial...

    $475 Average bid
    $475 Oferta promedio
    9 ofertas

    Senior Blockchain / CEX Development Team Required – AlphaNex Project Overview We are building AlphaNex, a new cryptocurrency trading platform backed by significant investment and a clear long-term vision. We are looking for an experienced technical partner, not simply developers who implement specifications. The selected team must be capable of reviewing our existing MVP, challenging architectural decisions, identifying risks, recommending what should be reused/refactored/rebuilt, and ultimately developing a secure, scalable, production-ready CEX. Our target is an initial production-ready release within approximately 3 months. We understand this is aggressive and expect an honest technical assessment based on the existing codebase, remaining scope, dependencies, and required team ...

    $7406 Average bid
    $7406 Oferta promedio
    49 ofertas

    I'm looking for motivated affiliates to promote our Certified Blockchain Developer training. You will earn an 8% commission on every confirmed sale. This opportunity is perfect for those with audiences in tech, Web3, crypto, and coding. Affiliates can promote through: - Social Media: Facebook, Twitter, LinkedIn - Blogs - YouTube Content types can include: - Articles - Videos - Infographics Ideal Skills and Experience: - Strong social media presence - Experience in content creation - Knowledge of blockchain and related technologies - Proven track record in affiliate marketing Join me in spreading blockchain knowledge and earning together!

    $189 Average bid
    $189 Oferta promedio
    44 ofertas

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