Passion Gaming Private Limited seeks an experienced Back End Engineer with 4.5+ years of NodeJS experience. Responsibilities include designing and developing large-scale distributed services, implementing new user-facing features, improving system efficiency and scalability, and collaborating with product and design teams. The ideal candidate possesses a strong foundation in computer science, data structures, algorithms, and design patterns, along with in-depth knowledge of the NodeJS ecosystem, Socket.io, Redis, RPC, RDBMS, and NoSQL databases. Experience with IaaS clouds (AWS, GCP, Azure) is required. Excellent communication skills are essential.