Senior Full Stack Engineer (Node.js + React) | Wallet Integration Experience

Location: Remote / Hybrid Employment Type: Full-Time Experience: 4+ Years ✔ About the Role We are seeking an experienced Full Stack Engineer with strong expertise in Node.js, React, and digital wallet integrations to help build secure, scalable financial and payment solutions. The ideal candidate has hands-on experience integrating payment wallets, designing APIs, and developing customer-facing web applications. ✔ Responsibilities - Develop and maintain web applications using React.js and Node.js. - Design and implement RESTful and GraphQL APIs. - Integrate and manage digital wallets such as: - Apple Pay - Google Pay - PayPal Wallet - Stripe Wallet/Payment Elements - Crypto wallets (MetaMask, WalletConnect, Coinbase Wallet) if applicable - Build secure payment flows, authentication, and transaction management systems. - Collaborate with product, design, and security teams. - Optimize application performance and scalability. - Write unit, integration, and end-to-end tests. - Participate in code reviews and technical architecture discussions. ✔ Required Qualifications - 4+ years of experience with Node.js and modern JavaScript/TypeScript. - 3+ years of experience with React.js. - Experience integrating one or more wallet/payment platforms. - Strong understanding of: - REST APIs - OAuth/JWT authentication - Webhooks - Payment processing workflows - Experience with databases such as PostgreSQL, MySQL, or MongoDB. - Familiarity with cloud platforms (AWS, Azure, or GCP). - Understanding of secure coding practices and PCI-related considerations. ✔ Preferred Qualifications - Experience with blockchain technologies and Web3 development. - Knowledge of smart contracts and wallet connectivity protocols. - Experience with Docker, Kubernetes, and CI/CD pipelines. - Familiarity with financial services, fintech, or payment products. ✔ Tech Stack - Frontend: React, TypeScript, Next.js - Backend: Node.js, Express/NestJS - Database: PostgreSQL, MongoDB - Cloud: AWS - Payments/Wallets: Stripe, PayPal, Apple Pay, Google Pay, WalletConnect, MetaMask - DevOps: Docker, GitHub Actions ✔ Assessment Link: https://www.testportal.com/test.html?t=2crjpAKHYYR5