The interview process for Sell.do was conducted online and consisted of a single comprehensive technical round. Topics Covered: DSA Round: I was asked 3 data structures and algorithms (DSA) problems that tested my problem-solving ability and understanding of algorithmic concepts. The questions focused on array manipulation, string operations, and hashing techniques. Project Discussion: I was asked in-depth questions about the projects I’ve worked on, including: The architecture and tech stack used. Challenges faced and how I solved them. Specific features like real-time chat (in ChatApp), integration of Google Maps (in Real Estate App), etc. React & Node.js: General and scenario-based questions were asked on: React lifecycle methods, hooks, component communication. Node.js architecture, Express routing, handling APIs, and middleware. Core CS Concepts: OOP: Concepts like inheritance, encapsulation, and polymorphism. DBMS: Normalization, indexing, joins, and transactions. Operating Systems: Basics of process management, memory management, and multithreading. Overall, the interview was a good mix of DSA, project-based discussions, tech stack-related questions, and core computer science fundamentals.