Backend Developer – E-commerce (Remote, Vietnam and China Priority)

Backend Engineer with mobile-first environment experience. 4+ years of experience in full-stack development (e.g., Node.js, React, JavaScript/TypeScript). Experience with e-commerce platform development or integration, ideally marketplace-focused. Familiarity with blockchain technology and crypto payments (e.g., Web3.js, Ethers.js). Proficiency in API development and integration with payment systems. Ability to work remotely and align with Hong Kong/Singapore time zones. Bachelor’s degree in Computer Science, Engineering, or a related field (or equivalent experience).

Develop and customize an e-commerce platform for a marketplace service. Implement crypto payment flows using QR/NFC. Build and maintain APIs connecting the e-commerce system with the backend. Collaborate on scalability and security of marketplace features. Contribute to admin and customer portals. Document code and integration processes.