• Design, develop, and maintain full-stack applications using Next.js, React, and Node.js • Build and maintain scalable RESTful APIs and backend services • Work with PostgreSQL for transactional systems and ClickHouse for analytics and large-scale event data • Contribute to event-driven architectures using Kafka and/or RabbitMQ • Develop and maintain data pipelines that process high-volume events such as orders, ads, user activity, and system events • Optimize frontend performance using SSR, SSG, and ISR in Next.js • Collaborate closely with product, design, and data teams to translate business requirements into technical solutions • Integrate third-party APIs including Amazon, Shopify, and internal services • Troubleshoot production issues and take ownership of performance, reliability, and scalability • Write clean, testable, and well-documented code • Participate in code reviews, architectural discussions, and technical decision-making