1. HR Resume Check Ensure your resume is clear, concise, and free of spelling or grammar errors. Confirm that your resume aligns with the position you're applying for, highlighting relevant skills and experiences. Prepare to answer questions about your past work experiences and career objectives. 2. Project Manager (PM): LeetCode Easy Questions Prepare a set of easy LeetCode coding questions in advance, such as array manipulation, string operations, etc. Familiarize yourself with common data structures and algorithms, such as arrays, linked lists, stacks, queues, etc., and their basic operations. Practice coding under pressure, especially timed coding exercises. 3. Tech Lead: Data Warehouse Understanding, LeetCode DP Problems, Different Schema Keys, DFS vs BFS Data Warehouse Understanding: Ensure a clear understanding of basic concepts and architecture of data warehousing, including dimension tables, fact tables, ETL processes, etc. Familiarize yourself with common data warehouse tools and technologies, such as SQL databases, ETL tools, etc. LeetCode DP Problems: Prepare some Dynamic Programming (DP) related LeetCode coding problems, such as Longest Increasing Subsequence, Maximum Subarray, etc. Be familiar with the basic principles of DP and common problem-solving approaches, such as state definition, state transition equation, etc. Different Schema Keys: Understand different types of database keys, such as primary keys, foreign keys, unique keys, etc., and their roles and distinctions in database design. Consider how to choose the appropriate key type based on application scenarios and performance requirements. DFS vs BFS: Understand the principles and differences between Depth-First Search (DFS) and Breadth-First Search (BFS) algorithms. Learn how to apply DFS and BFS to solve various problems, such as graph traversal, pathfinding, etc.