Blockchain Jobs

I’m kicking off an eight-week sprint to release a beta-ready crypto wallet tailored for merchants. The wallet will launch on Polygon first and later expand to other chains, so the codebase must be modular from day one. Tech foundation • Front end in React (web) and a companion Flutter app • Node.js back end • Fireblocks or BitGo for secure custody and signing • MoonPay for fiat on-ramp • Alchemy for chain data and broadcasting Core scope The MVP must let a merchant create an account, receive funds, and move crypto with full auditability. To keep things sharply defined, the first release will cover: Features required at launch 1. Transaction history (per wallet, per user, exportable as CSV) 2. Multi-currency balances on Polygon (USDC, MATI...

I’m kicking off an eight-week sprint to release a beta-ready crypto wallet tailored for merchants. The wallet will launch on Polygon first and later expand to other chains, so the codebase must be modular from day one. Tech foundation • Front end in React (web) and a companion Flutter app • Node.js back end • Fireblocks or BitGo for secure custody and signing • MoonPay for fiat on-ramp • Alchemy for chain data and broadcasting Core scope The MVP must let a merchant create an account, receive funds, and move crypto with full auditability. To keep things sharply defined, the first release will cover: Features required at launch 1. Transaction history (per wallet, per user, exportable as CSV) 2. Multi-currency balances on Polygon (USDC, MATI...

I’m leading the MVP development of a space-themed, cross-platform metaverse where players can truly own ships, stations and resources through a token-driven economy. The immediate priority is bullet-proof blockchain integration on Polkadot, and that starts with well-architected smart contracts. I’m looking for a developer based in the US or Europe who can design, code and test the ink! smart contracts that will: • Mint, transfer and burn our space-based NFTs • Handle the in-game utility token (staking, rewards, fees) • Enforce marketplace trades and royalty logic • Plug cleanly into our existing Substrate back-end and Unity front-end Deliverables 1. Production-ready ink! contracts, optimised for weight and security 2. Comprehensive unit + integr...

Equity and governance ontop of retrainer plus paid hrs in zoommeeting option available for long term earnings. I need an experienced technical partner who can help me put order, speed and airtight security into a large-scale project that spans a full blockchain ecosystem—core chain, apps, games, smart-integrated services—plus an internal research arm and a robust training program. Right now my overriding priority is organisation: I want development to flow smoothly from idea to deployment without the usual bottlenecks. The very first area to tackle is the blockchain layer itself. We will anchor everything around a rock-solid implementation that supports smart contracts out of the box, then expand to companion apps and gaming modules. Security must exceed traditional bank st...

I’m building a proof-of-concept that shows how a flash-loan style transaction would look on the Tron network using USDT. Here is exactly what I need: • Two wallet panels (Wallet A as sender, Wallet B as receiver) clearly visible in the interface. • A field where I can type any USDT amount—even one that exceeds the current balance—and trigger the operation. • Behind the scenes, the system should borrow just long enough to cover the transfer, pay only the network fee from Wallet A, and then settle so the balance never actually rests in Wallet B. • Real-time transaction status updates while the operation is in flight and an automated check that confirms the loan was repaid in the same block. • A transaction history log that records each simu...

I’m putting together a lightweight, consortium-based blockchain layer to decentralize the control plane of a software-defined vehicular ad-hoc network (VANET) for ddos attack. The architecture must place enhanced security front and center—specifically, it has to guarantee data integrity, robust authentication and strong privacy protection for every message that moves between vehicles, roadside units and cloud edges. Because we are working with a consortium blockchain, I expect permissioned membership management, rapid consensus and low latency that fits the tight timing windows of vehicular communication. Open public chains are off the table; the solution has to remain controllable by a defined set of stakeholders such as OEMs, infrastructure operators and municipalities. Her...

I need help to recover Bitcoin that went missing after a series of mining-related transfers failed and fees were deducted. The sole objective is to recover lost Bitcoin; no penetration testing or educational demonstrations are required. I will supply full Transaction IDs and all associated details so you can trace what happened on-chain, pinpoint where the funds are currently held, and propose a lawful path to retrieve them. If additional information—such as wallet addresses, mempool screenshots, or further blockchain explorer links—will speed up your investigation, let me know and I will provide it promptly. Please have a proven background in Bitcoin wallet recovery, blockchain forensics, cryptography, or similar disciplines. Familiarity with tools like Bitcoin Core, Electru...

Looking for a Python developer to build a script that connects to an external API, fetches data, processes it, and exports clean reports into Excel. The script should handle errors properly (like failed API calls), and the code should be well-structured so it’s easy to update later. Simple logging for tracking runs would be a plus.

I am looking to develop a fully functional, production-ready non-custodial cryptocurrency wallet mobile application. The app must provide secure and reliable wallet functionality, following industry standards for security and performance, comparable in structure (but not scope) to Trust. Core Features: Wallet creation (secure generation of seed phrase / mnemonic) Wallet import (restore using seed phrase) Display wallet address and QR code Display on-chain balance (Ethereum network initially) Send and receive transactions Transaction history Technical Requirements: Must use for wallet generation, signing, and transaction handling Use Infura or Alchemy for blockchain RPC connectivity Non-custodial architecture (private keys generated and stored locally on device only) Secure storage imp...

I'm looking for an experienced blockchain developer to create a meme coin on the Ethereum platform. The primary goal of this coin is community building. Key features: - Staking capabilities - Governance voting - Token burns Ideal skills and experience: - Strong knowledge of Ethereum and smart contract development - Experience in creating tokens with staking and governance features - Familiarity with tokenomics and implementing token burn mechanisms Please provide examples of similar projects you have completed.

I'm looking for a skilled developer to create a USDT wallet management software. The software should be compatible with Windows and Linux platforms. Essential features include: - Secure multi-signature support - Comprehensive transaction history - User-friendly address book Ideal skills and experience: - Expertise in cryptocurrency wallet development - Proficiency in cross-platform software development - Strong security protocols and encryption knowledge Please provide examples of previous similar work.

I want a bootable .img image for the Raspberry Pi 4 that turns the board into a fully offline, hardware-style wallet. After flashing the image to an SD card and powering up, I expect a clean graphical interface that lets me: • Generate and manage addresses for roughly forty of the most-used coins and tokens. • Sign and later broadcast transactions only when I briefly connect the Pi to a network. • Move funds straight to a linked bank account by entering a routing and account number—ACH style—without ever needing a third-party exchange. The build has to run reliably with no internet dependency at first boot, keeping all keys on the device and encrypted at rest. A simple on-screen flow for first-time setup, balance overview, and transfers is essential; I shou...

I need a single .img file that I can flash straight to a micro-SD, slot into a Raspberry Pi 4, power on, and start mining—no extra setup, no internet connection, just plug-and-play. The image must boot directly into an advanced graphical interface that lets me monitor hashrate, temperature, accepted shares, pool status, and switch coins without touching the command line. A high speed plug & play offline crypto miner for all 40 crypto currencies. The core requirement is support for the three main algorithms I selected—SHA-256, Ethash, and Cryptonight—so the device can tackle my full portfolio of roughly forty coins. Performance matters: the system should auto-detect optimal overclock settings for the Pi 4, make efficient use of its GPUs/CPUs, and offer pool configura...

We are building a platform focused on gaming, prediction systems, and decentralized infrastructure. We are looking for an experienced developer who can take a leading role in system architecture and core development. Scope of work: - Design and develop backend systems - Build and integrate smart contracts - Contribute to overall system architecture - Ensure scalability, security, and performance Requirements: - Strong experience in backend or fullstack development - Experience with Web3 / blockchain technologies - Experience with smart contract development (e.g. Solidity) - Familiarity with distributed systems - Ability to work independently and take ownership - World wide location developers(except India, Pakistan, Bangladesh, Africa: will skip developers on these locations) Nice to h...

Solana Copy Trading Platform Development I want to create a web platform similar to Mirrorlink, focusing on a clean, modern copy trading dashboard using Solana. The main goal is to enable users to connect their Solana wallet to automatically copy trades from selected leader wallets, Telegram channels or successful traders. Scope of work - Develop frontend with a dark modern theme featuring neon accents and clean cards. - Integrate a Connect Wallet button for platforms like Phantom, Solflare, Backpack. - Create a leaderboard/discover page listing top traders/wallets with stats such as PNL, win rate, number of copiers, AUM. - Design trader profiles with performance charts and trade history. - Implement a copy settings modal with options for amount to allocate (fixed SOL or %), slippage tol...

Je souhaite lancer une application de collection NFT qui permette à mes utilisateurs d’exposer, acheter et échanger leurs actifs numériques. L’accent est mis sur deux catégories principales : • Œuvres d’art numériques • Objets de collection virtuels Fonctionnalités clés recherchées : 1. Galerie immersive pour consulter et filtrer les NFTs par créateur, rareté ou catégorie. 2. Intégration portefeuille (MetaMask, WalletConnect ou solution équivalente) afin de faciliter l’on-boarding et la signature des transactions. 3. Module de vente directe : mise en ligne, fixation de prix fixe ou enchère, paiement en crypto. 4. Module d’échange...