Senior Full Stack Developer at Robert Walters

Key Responsibilities

• Design, build, and maintain backend services using Node.js, MongoDB Atlas, and AWS (EC2).
• Develop and enhance our Flutter mobile application (integrated with Hive for local storage).
• Implement secure integrations with Flutterwave, Xendit, Stripe, and Thunes for payments.
• Use React to manage the web interface and admin dashboards.
• Build and optimize real-time data syncing via WebSockets.
• Integrate communication and notification services (FCM, Twilio, SendGrid).
• Manage file storage and access through Google Console (Drive Connect).
• Deploy and maintain cloud infrastructure for reliability, scalability, and security.
• Integrate and test LLM APIs (OpenAI, Claude, and Gemini) to support AI-driven learning and admin features.
• Collaborate closely with education, design, and product teams to deliver meaningful, user-friendly experiences.
• Conduct QA testing and troubleshooting across devices and environments

Qualifications

• 5+ years of professional experience in software development.
• Strong proficiency in Node.js, Flutter, React, and MongoDB.
• Solid understanding of AWS infrastructure and DevOps practices.
• Experience deploying mobile-first applications optimized for low-connectivity regions.
• Experience working with payment gateways and secure API integrations.
• Familiarity with LLM APIs (OpenAI, Claude, Gemini) for applied use cases.
• Knowledge of WebSocket, Firebase Cloud Messaging, and SendGrid/Twilio integrations.
• Strong debugging and performance optimization skills.
• Excellent communication and documentation habits.