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

Job Description

Job Summary We are hiring for an innovative crypto wallet and payment network startup who are looking for a Full-Stack Developer to build and maintain the e-commerce marketplace service within their crypto wallet app, built with React Native. You will develop and customize a whitelabel or prebuilt platform and integrate it with the crypto payment system. Responsibilities Develop and customize a whitelabel or prebuilt e-commerce platform to create a marketplace service within the app. Implement crypto payment flows using QR/NFC, ensuring seamless user experiences in the marketplace. Build and maintain APIs to connect the e-commerce system with the smart contract-based backend. Collaborate with the Senior Engineer and Tech Lead to ensure scalability and security of marketplace features. Contribute to admin and customer portals for marketplace management and user interaction. Document code and integration processes for internal and external stakeholders. Qualifications Backend Engineer who has worked in a mobile-first environment. 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). Preferred Skills Experience with marketplace platforms like Shopify, Magento, or WooCommerce. Knowledge of crypto payment gateways and QR/NFC payment systems. Familiarity with React Native for mobile app development.