About BuymedBuymed is the leading B2B healthcare platform in Southeast Asia, operating across Vietnam, Cambodia, and Thailand. We serve over 35,000 pharmacies, clinics, and hospitals with a mission to make healthcare more accessible and efficient. As we scale rapidly, recruitment must evolve from manual and reactive to systemized and data-driven, and that’s where this role comes in.We are seeking a Senior Software Engineer skilled in React, Next.js, HTML, and CSS to build user-friendly web applications for CIRCA’s POS and operation systems. You’ll develop and optimize key modules like inventory, orders, payments, and reporting, working closely with backend engineers and UI/UX designers. Key Responsibilities:Design, develop, and maintain high-performance backend services using Golang.Work with PostgreSQL, MongoDB, ElasticSearch, Redis, and RabbitMQ to build scalable, distributed systems.Implement APIs using REST or JSON-RPC protocols.Deploy and maintain services using Docker, Kubernetes, and GCP (or equivalent cloud platforms).Optimize system performance, scalability, and reliability.Collaborate with frontend and product teams to deliver complete features.Participate in code reviews and contribute to overall system architecture.