Blockchain jobs

...Web3 idea ready to move from concept to code and I’m seeking an experienced blockchain developer to guide and build the entire solution with me. Because the project is still early-stage, I’m open on the specific chain, tech stack, and even the exact feature set—we’ll define those details together during an initial discovery call. What I do know is that the end product will rely on smart contracts, a dApp front end, and secure wallet interaction, so familiarity with Solidity or similar contract languages, , and modern front-end frameworks is essential. Here’s how I’d like to structure our collaboration: – First, a short technical workshop where you assess my concept, recommend an appropriate blockchain (Ethereum, BSC, Polkadot,...

I’m creating a virtual coin on the Tron blockchain and need a complete, production-ready solution. The core token must follow the TRC-20 standard so users can send and receive it as easily as any other TRX-based asset. Beyond basic transactions, the coin will reward long-term holders through an on-chain staking mechanism that automatically calculates and distributes rewards. To make adoption painless, I also want a clean, responsive web interface. Holders should be able to connect with common wallets such as TronLink, view balances, start or stop staking, and track their accrued rewards in real time. Deliverables I’m expecting: • Audited TRC-20 smart contract with integrated staking logic • Front-end web dashboard (React or similar) that connects via Tr...

I need a complete, student-facing web application that lets users prove the authenticity of their academic certificates through blockchain hashing. The flow is straightforward: a student signs up, uploads a certificate, and immediately receives an on-chain validation record that anyone can later cross-check online. I have half work done and pages are created Core functionality • Secure user registration and login with email or social auth • Certificate upload, automatic hashing, and immutably storing the hash on a blockchain network (Ethereum or any suitable L2 you recommend) • Instant on-screen validation result plus a shareable verification link • Admin dashboard where I can review submissions, view analytics, and revoke or re-issue hashes whe...

...Client invites Contractor (mock), Contractor invites Subcontractor; mock doc upload (insurance/certificates), auto-checks (expiry/risk score: green/amber/red). Client approval workflow. Project Workflow: Employer dashboard—approve partner/worker, view supply chain compliance (status bubbles up: Subcontractor > Contractor > Client), issue worker badge. Audit/Consent: SHA-256 logs (simulating blockchain), simple approve/share. Tech Stack: React Native (mobile app + responsive web dashboard). Backend: Node.js/Express + mocks, SQLite DB. Auth: JWT. QR for badges/PQQ. Deliverables: Functional React Native prototype (app + web). GitHub repo (full source) + free hosted demo (Heroku/Netlify/Vercel). README w/ setup guide, API mocks list. Timeline & Milestones (AGI...

I need a complete, student-facing web application that lets users prove the authenticity of their academic certificates through blockchain hashing. The flow is straightforward: a student signs up, uploads a certificate, and immediately receives an on-chain validation record that anyone can later cross-check online. I have half work done and pages are created Core functionality • Secure user registration and login with email or social auth • Certificate upload, automatic hashing, and immutably storing the hash on a blockchain network (Ethereum or any suitable L2 you recommend) • Instant on-screen validation result plus a shareable verification link • Admin dashboard where I can review submissions, view analytics, and revoke or re-issue hashes whe...

Hi, I’m building a blockchain/Web3 project and I’m looking for a skilled blockchain developer who can help design and build the project using blockchain technology and Web3. I’d love to connect and explore a potential collaboration. Please let me know if you’re interested.

I am building a service that must accept one-time customer payments directly on a public blockchain. My preferred rail is Ethereum, so the core of the job is a production-ready smart-contract–plus–API stack that lets me generate unique payment addresses, confirm the transfer, and surface the confirmation back to my app in real time. Here’s what I need the finished package to do: • Solidity smart contract deployed on Ethereum mainnet (initially Kovan/Goerli for testing) that logs each payment, enforces one-time use, and emits an event my backend can listen to. • Lightweight Web3 interface or RESTful webhook that notifies my server once a transaction reaches a configurable confirmation depth. • Simple front-end snippet (HTML/JS) that shows the cli...

I need Google Analytics 4 to register every meaningful moment a visitor interacts with our Ethereum-based wallet integration. The scope covers: • Wallet connections – I want separate events when a user connects successfully and when the attempt fails. • Transaction completions – log both payment-success and payment-failed states. • General wallet errors – surface any other connectivity issues as a distinct event so they do not disappear inside generic JavaScript error noise. You may hook into the existing Web3 provider ( is already on the page) or propose an alternative, but the final data must enter GA4 cleanly, ideally through Google Tag Manager for easy maintenance. Acceptance criteria – GA4 real-time debug view shows the five new ev...

I need an advanced crypto fl@shing application that works seamlessly across major exchanges—including Binance, Coinbase, Kraken—and can be extended to Kucoin and any other CEX we decide to add later. The core requirement is elegant, reliable t...length, and launch the flash. • Source code with clear inline comments and a brief README explaining environment setup, key modules, and safety precautions. • A short live demonstration (testnet or small-value mainnet) proving spoofed deposits can be traded or withdrawn before disappearing. If you have prior experience defeating exchange detection systems or building stealth layers around blockchain transactions, that will accelerate selection. Let’s discuss the exact approach, chain coverage, and milestone...

...compelling messaging and value propositions that resonate with users. Monitor and report on key performance metrics, analyzing campaign effectiveness and providing actionable recommendations for continuous improvement. Stay updated on the latest trends in digital marketing, user behavior, and blockchain technology to ensure that our strategies are innovative and relevant. Requirements: Minimum of 4 years of experience in growth marketing, digital marketing, or related fields, preferably within the tech or blockchain sectors. Strong analytical skills with a proven track record in leveraging data to drive marketing decisions and optimize campaigns. Proficient in marketing automation tools, analytics platforms (e.g., Google Analytics, HubSpot), and CRM systems. Excellent com...

My goal is to prove that 50 completely separate Indian embassies can collaboratively train a powerful intrusion-detection model without ever sharing raw traffic logs. Each embassy keeps its packets local, trains an IDS in Python, then ships only the updated weights to a permissioned blockchain that averages them and sends back the enhanced parameters. Key points I need turned into code: • Dual-framework training loops: the local agent must be able to switch between PyTorch and TensorFlow so each site runs whichever stack its engineers prefer. • Attack coverage baked into the dataset pipeline: the IDS must correctly classify Malware, Phishing, and DDoS patterns. Synthetic generation for edge cases is fine as long as the final validation shows clear detection rates for al...

Digital Chain of Custody for Forensic Evidence ​Concept: A system for police and legal teams to track digital evidence (logs, har...evidence is often dismissed because the defense claims it was tampered with after seizure. ​The Solution: When evidence is collected, a cryptographic hash (SHA-256) of the file is generated and stored on a Blockchain. Every time the evidence is "checked out" or viewed by an officer, a transaction is recorded. If the file hash changes even by one bit, the Blockchain rejects it. ​Tech Stack: ​Frontend: React.js or Flutter. ​Blockchain: Ethereum (Sepolia Testnet) or Hyperledger Fabric (for private permissioned access). ​Storage: IPFS (InterPlanetary File System) to store the actual large files; Blockchain only stores the hash...

I'm looking for an experienced blockchain developer to create a smart contract on the Binance Smart Chain for a decentralized value proposition (DVP) platform. Essential requirements include: - Automated settlements - Asset transfer Ideal skills and experience: - Proficiency in BSC - Strong smart contract development skills - Experience with automated settlement mechanisms and asset transfer functionalities Please provide relevant past project experience and a timeline for completion.

...integrating AI into the existing frontend/backend rather than building from scratch. Scope of Work (High-Level) Review existing Web3 website architecture Propose suitable AI use cases and technical approach Integrate AI models/APIs with the platform Connect AI features with blockchain data and smart contracts where relevant Ensure performance, security, and maintainability Documentation and basic testing Skills & Experience Required Strong experience with Web3 technologies (smart contracts, wallets, blockchain data) Experience integrating AI/ML models or AI APIs Frontend and backend web development experience Understanding of security and privacy best practices Ability to communicate clearly and suggest improvements Deliverables Fully integrated AI featu...

.../ Buildroot Round displays AMOLED or TFT Physical inputs Rotary encoder / digital crown Hardware buttons Performance & power awareness Frame pacing Partial redraws Sleep / wake behavior If you have not shipped an embedded UI on real hardware, do not apply. DO NOT APPLY IF YOU ARE: A web developer (React, Vue, Angular, etc.) A mobile developer (Flutter, React Native, SwiftUI) A blockchain / Web3 / NFT developer An agency or team Someone who says “I can learn LVGL” We are not interested in generalists. WHAT YOU WILL WORK ON Watch UI architecture LVGL / Qt render loop optimization Crown-driven scrolling & menus Gesture → UI feedback Haptic-synchronized interactions Power-aware UI behavior Always-on display strategies This role dir...

.../ Buildroot Round displays AMOLED or TFT Physical inputs Rotary encoder / digital crown Hardware buttons Performance & power awareness Frame pacing Partial redraws Sleep / wake behavior If you have not shipped an embedded UI on real hardware, do not apply. DO NOT APPLY IF YOU ARE: A web developer (React, Vue, Angular, etc.) A mobile developer (Flutter, React Native, SwiftUI) A blockchain / Web3 / NFT developer An agency or team Someone who says “I can learn LVGL” We are not interested in generalists. WHAT YOU WILL WORK ON Watch UI architecture LVGL / Qt render loop optimization Crown-driven scrolling & menus Gesture → UI feedback Haptic-synchronized interactions Power-aware UI behavior Always-on display strategies This role dir...

I am rolling out a trio of inter-linked prototypes that tackle pressing urban and environmental challenges while showcasing cutting-edge AI, blockchain, and IoT engineering. First, the AI-driven Smart Traffic System must ingest multi-sensor feeds, apply real-time reinforcement learning, and demonstrate measurable gains in a simulation such as SUMO—specifically a double-digit reduction in congestion and wait times across a 20-intersection grid. Second, the Blockchain Voting System needs an end-to-end verifiable ballot flow. I expect audited Solidity or Substrate contracts, mobile-friendly front-end, zero-knowledge vote secrecy, and a testnet demo with at least fifty dummy voters that passes a public audit script. Third, the Solar-Powered Smart Watering System will run...

I need a full-stack solution that turns raw Revit project data into verifiable FIDIC-compliant construction claims, stored immutably on Hyperledger Fabric and surfaced through a clean web dashboard. The workflow I have in mind is straightforward: Revit models (or their IFC/CSV exports) are pushed to a REST API you build in Node.js or Python. Your parser extracts the quantities and events that matter, the rule engine interprets them under the FIDIC Red Book, and the resulting claim package is written to a Fabric network. Every supporting document or 3D fragment is fingerprinted, with the hash anchored on-chain and the file itself held on IPFS or another secure store. The same API must expose three core functions—claim management, user authentication and data analytics—so t...

I need a compact script or small utility that talks to Uniswap o...details The focus is squarely on those two capabilities—both must work end-to-end. I’m looking for clean, well-commented code plus a quick README so I can plug in my keys, run it, and see the price or have the swap execute without extra tweaking. Speed matters: I need the first working version within 24 hours of contract start. When you respond, concentrate on your direct experience building blockchain or Uniswap-style swap tools; a concise note on where you’ve solved the same problems before is all I need to decide quickly. Deliverables • Source code • README / usage notes • Short proof (logs or TX hash) showing one price call and one live swap working on Monad That’s...

...art/finance, lack of African representation in NFTs), 4) The Solution (Nzinga Crypto Warriors collection honoring Queen Nzinga), 5) Market Opportunity (NFT market size, African art demand, crypto adoption), 6) Product Overview (collection details, 10k supply, rarity tiers, artistic vision), 7) Historical Significance (Queen Nzinga Mbande 1583-1663 legacy), 8) Unique Value Proposition (African history + blockchain + cyberpunk aesthetics), 9) Roadmap (4 phases: Genesis, Expansion, Metaverse, Legacy), 10) Tokenomics ($NZINGA utility token overview preview), 11) Revenue Model (primary sales, royalties, merchandise, licensing), 12) Go-to-Market Strategy (whitelist, influencers, partnerships), 13) Team & Advisors, 14) Competitive Analysis (vs other NFT projects), 15) Traction &...

...verification, company verification). • OTP with Virtual Keyboard – OTP entry via virtual keyboard for at least two high-risk actions (password reset, resume download, account deletion). • Secure Logging and Audit – Log all critical actions (authentication, job posting changes, application status updates, admin moderation). – Logs must be tamper-evident using hash chaining or a private blockchain. • Defenses Against Attacks – Protection against SQL injection, XSS, CSRF, session fixation, and session hijacking. Data Storage Compliance – Passwords must be hashed and salted (bcrypt or Argon2). – Plaintext passwords must never be stored. – Sensitive documents must be encrypted with strict access control. • Sca...

...verification, company verification). • OTP with Virtual Keyboard – OTP entry via virtual keyboard for at least two high-risk actions (password reset, resume download, account deletion). • Secure Logging and Audit – Log all critical actions (authentication, job posting changes, application status updates, admin moderation). – Logs must be tamper-evident using hash chaining or a private blockchain. • Defenses Against Attacks – Protection against SQL injection, XSS, CSRF, session fixation, and session hijacking. Data Storage Compliance – Passwords must be hashed and salted (bcrypt or Argon2). – Plaintext passwords must never be stored. – Sensitive documents must be encrypted with strict access control. • Sca...

...verification, company verification). • OTP with Virtual Keyboard – OTP entry via virtual keyboard for at least two high-risk actions (password reset, resume download, account deletion). • Secure Logging and Audit – Log all critical actions (authentication, job posting changes, application status updates, admin moderation). – Logs must be tamper-evident using hash chaining or a private blockchain. • Defenses Against Attacks – Protection against SQL injection, XSS, CSRF, session fixation, and session hijacking. Data Storage Compliance – Passwords must be hashed and salted (bcrypt or Argon2). – Plaintext passwords must never be stored. – Sensitive documents must be encrypted with strict access control. • Sca...

...FinTech / Blockchain / Supply Chain / Agriculture Finance Topic (Fixed): Role of Blockchain Technology in Improving Transparency, Efficiency, and Financial Access in Agriculture Supply Chain Financing Project Requirements: • Minimum 15,000 words • Well-structured academic project • Includes: • Introduction & background • Literature review • Research methodology (mixed method) • Analysis & discussion • Conceptual framework/model • Findings & recommendations • Conclusion • Proper citations & references (APA/Harvard) • Plagiarism-free (Turnitin <10%) • MBA-level quality (IIM/Executive MBA standard) Timeline: 3 days (strict deadline) Freelancer Profile Required: • Experie...

...**3. Overall Technical Scope** ### **3.1 Mandatory Architecture Requirements** Bidders must propose a production-grade architecture covering: * Backend: Microservices architecture (Java / Go / Node.js acceptable; rationale required) * Frontend: Web (React or Vue); Mobile optional * Real-time data: WebSocket * Event streaming: Kafka or equivalent * Databases: MySQL / PostgreSQL + Redis * Blockchain: EVM-compatible (NFTs, tokens, on-chain events) * Security: RBAC, audit logs, AML integration * Deployment: Docker-based CI/CD --- ## **4. Functional Scope (Core Modules)** ### **4.1 Core Trading System** * Spot trading * Basic derivatives / futures * Real-time order book, trades, and K-line charts --- ### **4.2 NST Behavior Mining & Quest System** * Full behavior tracki...

...can create and quickly grow) a crypto-focused Twitter account with a real, engaged following. The core task is product promotion: craft and publish a short series of tweets, threads, or spaces announcements that highlight my coin’s value proposition, build excitement, and drive traffic to our website and Telegram channel. Your audience should be demonstrably interested in trading, DeFi, or blockchain news—no generic tech crowd, please. What I need from you • A Twitter handle with a proven or rapidly provable crypto-investor follower base • A clear promotional plan: post formats, frequency, key hashtags, and timing • Live links/screenshots to verify engagement (likes, retweets, comments, impressions) during the campaign • A brief perform...

...the platform itself acts as an on-chain escrow using the Solana blockchain. The project is partially completed. Your responsibility will be to finish the remaining features, integrate and secure Solana smart contracts, make the application platform-independent, and deploy it to production. Scope of work includes completing pending frontend and backend features, integrating Solana escrow smart contracts using Anchor, wallet integration with Phantom or Solflare, ensuring cross-browser and responsive behavior, fixing bugs, optimizing performance, deploying both smart contracts and the application, and providing basic deployment documentation. Tech stack used in the project includes (full stack), Solana blockchain, Anchor framework, PostgreSQL or MongoDB, and Tailwind CSS...

An 800-word article is needed that dives straight into the future developments of Electronic Health Records (EHR) within the wider healthcare IT landscape. The piece should zero in on the forward-looking trends—AI-powered decision support, FHIR-driven interoperability, patient-facing mobile access, blockchain-backed security, voice recognition, and any other cutting-edge innovations changing how clinicians and patients interact with health data. Write with an informed yet approachable tone so healthcare executives, IT managers, and clinical leaders can grasp both the technical and strategic angles. Natural integration of keywords such as electronic health records, healthcare IT, future EHR systems, interoperability, and AI in healthcare is important, but please keep the flo...

Position: Freelance Smart Contract / Blockchain Engineer Type: Contract / Freelance Location: 100% Remote Workload: Part-time or task-based Compensation: $30–$50/hour (or fixed-price per task) About the Project We are working on DeFi smart contract components, including token implementations and protocol-level logic. Our focus is security, clarity, and real-world usability — not hype. We are building a long-term freelancer pool and looking for engineers who can deliver clean, well-structured Solidity code independently. What You’ll Do Design and implement secure smart contracts using Solidity Work with EVM-compatible chains Review and improve existing smart contract code Follow best practices for documentation, testing, and security Collaborate asynchronou...

I need an advanced crypto flashing application that works seamlessly across major exchanges—including Binance, Coinbase, Kraken—and can be extended to Kucoin and any other CEX we decide to add later. The core requirement is elegant, reliable t...length, and launch the flash. • Source code with clear inline comments and a brief README explaining environment setup, key modules, and safety precautions. • A short live demonstration (testnet or small-value mainnet) proving spoofed deposits can be traded or withdrawn before disappearing. If you have prior experience defeating exchange detection systems or building stealth layers around blockchain transactions, that will accelerate selection. Let’s discuss the exact approach, chain coverage, and milestone...

I’m gearing up to launch a full-fledged DApp on Binance Smart Chain and I’d like an experienced blockchain developer to bring it to life. The core of the job is end-to-end DApp development—from writing and testing the smart contracts to connecting them with a clean, responsive front end and deploying everything onto BSC mainnet. Here’s the flow I have in mind: • Architect smart contracts that match the project logic and security best practices. • Build or integrate a Web3-enabled interface (React, Vue, or similar) so users can interact seamlessly. • Handle testnet deployment, iterative QA, and finally mainnet release, including clear documentation so I can maintain the codebase after hand-off. I’m open to your technical prefer...

...where every new order receives its own self-custody Ethereum deposit address. I need a small service that can: • Derive a fresh address from a master wallet (BIP-32/44 HD path preferred) each time my store’s API creates an order. • Secure those addresses behind multi-signature authentication so funds can only be moved with the required M-of-N signatures I specify. • Listen to the Ethereum blockchain in real time, detect incoming payments to any of the generated addresses, confirm once they reach my chosen block depth, and push a webhook or callback so my application can mark the order as paid. You’re free to use tools like , , or a light-client implementation in Node or Go; just keep everything non-custodial and under my full key control. Deliv...

I run a Shopify-based e-commerce store and I’m ready to start accepting Tether (USDT) at checkout. I need a developer who can build and install a fully functional USDT payment gateway that plugs seamlessly into my existing Shopify setup, routes the customer to a blockchain payment page, detects on-chain confirmation, then updates the order status inside Shopify in real time. The solution must • sit alongside my current card and PayPal options without disrupting them, • generate a unique wallet address or payment reference per order, • listen for the confirmation callback and mark the order as Paid automatically, • display clear success/failure messages to the shopper. I’m open to whichever network (ERC-20, TRC-20, etc.) you feel is most reli...

...process the same material—extract keywords, generate a concise summary, possibly produce embeddings—and write those insights back into the token’s metadata or a linked JSON file. Think Solidity (ERC-721 or ERC-1155 with OpenZeppelin), IPFS or Arweave for storage, plus a Python or Node script that calls GPT-4 / Llama via LangChain or similar. This person must also be familiar with setting up a blockchain and wallets. Specifically using AWS to start, but flexible on learing. Deliverables • Hyperledger smart contract with ownership, transferability, and royalty logic ready for main-net deployment • Data ingestion script that uploads assets, builds metadata, and calls the contract’s mint() function • LLM integration code that analyses e...

I need a seasoned mobile developer to deliver a production-ready iOS and Android app that runs on Binance Smart Chain. The core flow is simple: users sign up with multi-factor authentication, invite friends...enforces MFA and handles user/transaction metadata • Brief but thorough technical documentation and hand-off support For acceptance I will run the following checks: the contract will be audited on testnet, both apps must compile from source, and end-to-end reward claims should settle in a single block without manual intervention. If your portfolio shows live apps that combine secure auth, blockchain interaction, and a referral engine, that’s exactly what I’m after—send me links and a concise outline of the stack you propose so we can lock the mil...

...process the same material—extract keywords, generate a concise summary, possibly produce embeddings—and write those insights back into the token’s metadata or a linked JSON file. Think Solidity (ERC-721 or ERC-1155 with OpenZeppelin), IPFS or Arweave for storage, plus a Python or Node script that calls GPT-4 / Llama via LangChain or similar. This person must also be familiar with setting up a blockchain and wallets. Specifically using AWS to start, but flexible on learing. Deliverables • Hyperledger smart contract with ownership, transferability, and royalty logic ready for main-net deployment • Data ingestion script that uploads assets, builds metadata, and calls the contract’s mint() function • LLM integration code that analyses e...

I’m looking for a senior blockchain + fintech developer to build a crypto-finance MVP. The project requires integrating self-custody wallets (e.g., Gnosis Safe or similar) for users to hold USDC, creating an off-chain ledger to track balances for spending via a card (using Stripe Issuing, Marqeta, or similar), and adding a simple passive yield on pooled funds through a safe DeFi protocol or tokenized stable asset. The MVP should include basic wallet management, card spending, yield tracking, and an admin dashboard. Applicants must have experience in smart contracts, blockchain/web3 integration, backend development, and fintech/payment APIs, with a security-minded approach. Please provide examples of previous work in crypto wallets, DeFi, or fintech apps.

(Blockchain & Asset Management Expert) Location: Remote / Hybrid Experience: 8+ years (Crypto-native experience required) Employment Type: Full-time Travel: International (20–30%, fully sponsored) About the Role We are looking for a senior crypto-native professional to lead our digital asset treasury, wallet architecture, and liquidity operations. This role is responsible for how institutional crypto assets are stored, moved, secured, and optimized, using Fireblocks and multi-chain infrastructure. This is a high-trust, high-impact role working closely with leadership, finance, compliance, and security teams. Key Responsibilities Design and manage institutional wallet architecture (hot/warm/cold) Own crypto treasury operations and automated fund flows Manage liquidi...

Full-Stack Blockchain, Automation (n8n) & Web3 Platform Development (Web & Mobile App) | Blockchain, API, AI, Payment Integration ⸻ Project Description We are looking for a highly skilled Full-Stack Developer to build a production-grade Web3 platform that integrates Blockchain, APIs, AI models, payment gateways, and automation workflows using n8n, available on both web and mobile platforms. The project involves end-to-end development: front-end, back-end, mobile app, blockchain smart contracts, event-driven automation via n8n, AI integration, and secure payment handling. The objective is to deliver a scalable, secure, modular, and automation-first architecture, where blockchain events, user actions, and backend triggers are orchestrated throu...

I’m building a decentralized application on the Ethereum network and need an experienced Solidity developer to write, test, and deploy the core smart contract that will power the dApp. The contract must follow best practices for security and gas-efficiency and be ready for mainnet once we complete testing. You’ll start by defining the contract architecture with me, then move on to clean, well-commented Solidity code. I prefer a modern workflow—Hardhat or Truffle for compilation and testing, plus or for interaction scripts—but I’m open to alternatives if you have a strong preference. Unit tests that reach full branch coverage are essential, along with a brief technical write-up explaining the contract logic, deployment steps, and any upgrade or governance co...

I’m producing a marketing and promotion tutorial for a new blockchain app and need a female on-camera presenter who can switch smoothly between clear, neutral English and natural Indonesian. What I need from you: • Record yourself delivering my supplied script in both languages, maintaining a professional and formal tone throughout. • Wear business casual attire, ensuring a polished yet approachable look that matches the brand image. • Film in a quiet, well-lit setting (green-screen or neat background is fine) and deliver a clean 1080p file with balanced audio. • Follow basic on-screen guidelines—steady framing, consistent eye-line, and subtle, confident gestures that keep viewers engaged. The final deliverable is the edited video file plus ...

Hello I'm looking for an experienced crypto developer or blockchain expert who understands how to work with older (legacy) smart contracts, not new, easily deployable ones. The goal is to recreate or interact with older tokens, sometimes referred to as "flash contracts", to test or emulate tokens similar to USDT Flash (no LP) transferable without liquidation or liquidity pool and NFTs or tokens with embedded logos and attached hashes. Possibility of setting fixed-digit formatting (e.g., padded numeric display like 000 000 000 000 000). Example Tokens: Teller USD (USDT variant) 15-digit minimum (e.g. 000 000 000 000 000). BTCBR (BNB Chain) 24-digit minimum. Shiba Inu (BNB) 18-digit minimum. DAI (BNB). DAI (Fantom). NFT (BNB). XTM (BNB) with and without logo. 18-digi...

...mandate • Frontend: drive a complete user-interface refresh, pairing a modern look with smoother navigation and fully responsive layouts. • Backend: harden security, streamline transaction processing, and ensure the new codebase scales without latency spikes. What I expect from you 1. Draft a clear project plan that breaks down milestones, resources, and risks. 2. Coordinate designers, blockchain engineers, and QA so each sprint ships on schedule. 3. Keep documentation current and communicate progress with concise weekly reports. 4. Validate that final delivery meets the agreed performance metrics and security benchmarks before I sign off. If you’ve already guided crypto or fintech platforms through similar upgrades and can speak comfortably about ...

...Safeguards Required Expertise (Rust/Anchor): The lead developer must have demonstrable experience and verifiable contributions to live projects that utilize complex mechanics, such as: Frameworks: For state compression and efficient program interaction. Solana: Understanding of MEV-resistance and transaction bundling for fair launches. Protocols: Experience with bridging real-world events to the blockchain securely. Legal Framework: NDA: Specific project IP details are exchanged only after a mutual NDA is signed. Escrow System: Payments are milestone-based and locked in an on-chain escrow. Funds are released only upon independent verification of the successful code delivery on the network. This ensures security for both the project owner and the developer. To ensure you are hi...

Hiring for Gold ID (Web3 Domain Name Service) on EVM Chain (Urgent project / Budget negotiable) Project Details: I am building my own blockchain called “EGoldChain” (an EVM-compatible fork derived from BSC/Polygon). I want to develop a domain name registration system similar to ENS (Ethereum Name Service), using the .gold suffix. Example: If a user registers the name nova, the system will generate as an NFT. --- Scope of Work Part 1: Smart Contract (Solidity) Deploy on EGoldChain (I will provide the RPC URL). 1. Core System: • Write contracts based on the ERC-721 (NFT) standard. • 1 domain name = 1 NFT. • Suffix: must always end with .gold. 1. Functions: • Register: Register new names (payment accepted in USDT, and USX in the future). &...

Hyperledger Fabric has established itself as the de facto standard for permissioned blockchain infrastructure within the enterprise sector. Its modular architecture and privacy features make it ideal for consortiums where trust is distributed but governance is defined. However, despite its maturity, the data layer of Hyperledger Fabric remains limited due to the lack of compatibility with traditional SQL-based systems, which dominate enterprise data management. Fabric currently supports goLevelDB (a simple key-value store) and CouchDB (a document store). While functional, these databases impose significant constraints on smart contract developers, requiring complex application logic to execute operations that are standard in traditional data management—such as ad-hoc joins, ag...

Hiring for Gold ID (Web3 Domain Name Service) on EVM Chain (Urgent project / Budget negotiable) Project Details: I am building my own blockchain called “EGoldChain” (an EVM-compatible fork derived from BSC/Polygon). I want to develop a domain name registration system similar to ENS (Ethereum Name Service), using the .gold suffix. Example: If a user registers the name nova, the system will generate as an NFT. --- Scope of Work Part 1: Smart Contract (Solidity) Deploy on EGoldChain (I will provide the RPC URL). 1. Core System: • Write contracts based on the ERC-721 (NFT) standard. • 1 domain name = 1 NFT. • Suffix: must always end with .gold. 1. Functions: • Register: Register new names (payment accepted in USDT, and USX in the future). &...

I am tokenizing real-estate projects and need a polished, corporate-grade website that lets accredited and retail investors buy blockchain tokens backed by property shares. The entire flow must run on Polygon, so Web3 wallet connection, smart-contract calls, and gas-fee handling have to be native to that chain. Core features I must see live in the first release: • Secure token-purchase platform tied to my Polygon smart contract, with KYC gating and MetaMask (or WalletConnect) support. • Detailed property pages that look and feel like a professional brokerage: high-resolution media, financial projections, location maps, and live funding progress pulled from the contract. • Personal investor dashboard summarising wallet holdings, yield, vesting schedules, and dow...

...production-grade Web3 application that integrates Blockchain, API, AI model, and Payment Gateway functionality, available for both web and mobile platforms. This project requires front-end, back-end, and mobile app development, along with blockchain smart contract deployment, automation workflows, and seamless AI model integration. The objective is to develop a scalable, secure, and modular platform with advanced blockchain features, including smart contracts, as well as AI integration and payment gateway functionality. Both web and mobile apps will interact with the blockchain and backend services. ----------------------------------------------------------------------------------------------------------------------------- Scope of Work Blockchain ...

Description: • "I need an experienced blockchain developer to build a custom EVM-compatible chain (Fork)." • "Requirements: Setup Genesis Block, customize Chain ID, simple consensus setup (PoA), and deploy Block Explorer." • "Deliverable: Source code uploaded to my Private Github + Instruction Manual." • Keyword: ใส่คำว่า Geth, Go-Ethereum, Hyperledger Besu, Polygon Edge