Senior blockchain Engineer - MultiChain USDT/USDC Payment System

Описание вакансии

🚨Developer wanted: Senior blockchain Engineer - MultiChain USDT/USDC Payment System

Job description:

We are building a platform and the frontend is already developed in Flutter (Replit). We need an experienced blockchain engineer to create a secure and reliable payment system for deposits of USDT and USDC on Ethereum (ERC-20) and Tron (TRC-20) networks, with possible expansion to other chains later.

Key Responsibilities:

• Develop and deploy smart contracts for receiving USDT and USDC on Ethereum (EVM) and Tron networks.
• Implement reliable on-chain deposit detection, confirmation logic, and event emission.
• Build a backend/API to integrate with the web platform/app (real-time balance updates, transaction history, QR code/address generation).
• Ensure low-cost and secure transfers (especially on Tron).

Write clean, secure, and well-tested code.

Mandatory Requirements:

• 4+ years of professional experience in blockchain development;
• Strong experience with Solidity and EVM deployments on Ethereum mainnet;
• Proven experience with Tron blockchain (TRC-20 tokens, TronWeb/TronJS, deployment on Tron mainnet).
• Hands-on experience with USDT and USDC on both Ethereum and Tron networks;
• Experience building payment flows (deposit detection, confirmation, event listening).
• Ability to integrate backend with app (REST API + WebSocket or polling).

Nice-to-have:

• Knowledge of security best practices and common vulnerabilities.
• Experience with other chains (Base, Arbitrum, Solana, etc.).
• Backend development (Node.js or Python + Web3 libraries).

Contract Type:

• Freelance / Contract-to-hire (remote, international).
• We prefer someone available for 20–40 hours/week initially.