Blockchain-Integrated Decentralized Web Application(DApp)
6,500
ETH, DAI, USDT
+53
0 days (till Mar 6th, 2026)
I'm now seeking skilled and experienced developer that specialize in decentralized applications (DApps) and Web3.js I'm developing DApp using the MERN stack for the frontend and backend, while integrating blockchain technology to provide decentralized functionality.
Responsibilities:
Develop decentralized applications (DApps) using React for the frontend and Node.js/Express for the backend, integrating blockchain protocols (e.g., Ethereum, Solana, or others).
Create and manage smart contracts using blockchain languages like Solidity (for Ethereum) or Rust (for Solana).
Implement features such as cryptocurrency payments, wallet integrations, and token issuance.
Ensure secure user authentication with Web3.js or Ethers.js for blockchain wallets like MetaMask.
Work with blockchain databases or integrate with decentralized storage solutions like IPFS (InterPlanetary File System) for secure file storage.
Help clients or users deploy and interact with their DApps on Ethereum, Polygon, or other blockchain networks.
Optimize and scale DApps for better performance and user experience (considering transaction costs on certain blockchains).
Tech Required:
Frontend: React.js
Backend: Node.js, Express.js
Blockchain: Solidity (for Ethereum), Web3.js or Ethers.js
Country-specific paid telephone assignment contact 21 agreed travel agencies in Georgia using an existing working local line. Calls may be in Russian communication and the written report are in English. The list and complete short...
Country-specific paid telephone assignment contact 21 agreed travel agencies in Nigeria using an existing working local line. Calls may be in English or a suitable local language communication and the written report are in English....
We are looking for people in the US who enjoy talking to strangers and doing vox pop/street interviews. 🎤 The Job Interview 8 people in your local area. Ask them a few prepared questions. Record...
Hi, I'm Lanna - Night Shift Community Moderator (Brazil)I provide professional moderation for Discord & Telegram communities.AVAILABILITY - NIGHT SHIFT: BRT 6PM - 10PM (Sao Paulo) / EDT 5PM - 9PMPerfect to cover your US...
We are looking for a senior Android reverse engineer and mobile security researcher for an initial paid consultation, with the option to continue into hands-on technical research. This is NOT a standard Android development role....
Paid, fixed-price customer-support assignment for an English-speaking freelancer who can place business calls to Philippine travel agencies. Purpose: follow up quotation enquiries already emailed to 21 travel agencies about a vehicle WITH DRIVER service...
URGENT: We need a Philippines-based human freelancer to make LIVE business calls in ENGLISH to more than 20 Philippine travel agencies. You must be available to complete the entire agreed call list and submit the...
【Requirement】Seeking a senior Go language engineer for a full-service development and setup of a video game platform. 【Basic Information】 Budget: $2000 USD (all-inclusive). Existing mature front-end references are available. You are responsible for the...
We are SOLUTIONS GLOBAL SOFTWARE LTD, a company headquartered in the United Arab Emirates. We are looking for a representative to assist us with the verification of our Apple and Google developer accounts and, if...
Country-specific paid telephone assignment contact 21 agreed travel agencies in Georgia using an existing working local line. Calls may be in Russian communication and the written report are in English. The list and complete short...
Country-specific paid telephone assignment contact 21 agreed travel agencies in Nigeria using an existing working local line. Calls may be in English or a suitable local language communication and the written report are in English....
We are looking for people in the US who enjoy talking to strangers and doing vox pop/street interviews. 🎤 The Job Interview 8 people in your local area. Ask them a few prepared questions. Record...
Hi, I'm Lanna - Night Shift Community Moderator (Brazil)I provide professional moderation for Discord & Telegram communities.AVAILABILITY - NIGHT SHIFT: BRT 6PM - 10PM (Sao Paulo) / EDT 5PM - 9PMPerfect to cover your US...
We are looking for a senior Android reverse engineer and mobile security researcher for an initial paid consultation, with the option to continue into hands-on technical research. This is NOT a standard Android development role....
Paid, fixed-price customer-support assignment for an English-speaking freelancer who can place business calls to Philippine travel agencies. Purpose: follow up quotation enquiries already emailed to 21 travel agencies about a vehicle WITH DRIVER service...
URGENT: We need a Philippines-based human freelancer to make LIVE business calls in ENGLISH to more than 20 Philippine travel agencies. You must be available to complete the entire agreed call list and submit the...
【Requirement】Seeking a senior Go language engineer for a full-service development and setup of a video game platform. 【Basic Information】 Budget: $2000 USD (all-inclusive). Existing mature front-end references are available. You are responsible for the...
We are SOLUTIONS GLOBAL SOFTWARE LTD, a company headquartered in the United Arab Emirates. We are looking for a representative to assist us with the verification of our Apple and Google developer accounts and, if...
