10+ Vice President Engineering Interview Questions and Answers

Calculate sum of elements at 1st position in each array using Java 8.

• Use Java 8 stream to map each array to its 1st element and then sum them up.

• Example: {{1,2},{1,3},{5,6}} -> 1 + 1 + 5 = 7

I structure the services roadmap by prioritizing based on business goals, technology trends, and customer needs.

• Identify business goals and objectives

• Analyze technology trends and advancements

• Gather feedback from customers and stakeholders

• Prioritize services based on impact and feasibility

• Create a timeline for implementation and deployment

Visitor pattern is a design pattern where a visitor class is used to perform operations on elements of a data structure.

• Visitor pattern allows adding new operations to existing classes without modifying them

• It separates the algorithm from the object structure on which it operates

• Commonly used in compilers, interpreters, and other complex systems

Volatile refers to a type of memory storage that is temporary and can change frequently.

• Volatile memory loses its data when power is turned off, unlike non-volatile memory.

• Volatile memory is commonly used for temporary storage of data that needs to be quickly accessed and modified.

• Examples of volatile memory include RAM (Random Access Memory) in computers and cache memory in processors.

Thread collector class to manage and organize threads in a system

• Create a ThreadCollector class with methods to add, remove, and retrieve threads

• Implement a data structure like a list or queue to store the threads

• Ensure thread safety by using synchronization mechanisms like locks or semaphores

Roadmap structure and priorities are crucial for successful engineering leadership.

• Develop a clear roadmap outlining short-term and long-term goals

• Prioritize projects based on impact, resources, and timelines

• Regularly review and adjust roadmap to align with company objectives

Design the Low Level Design (LLD) for a Parking Lot System

• Divide the system into modules like parking lot, vehicle, ticket, payment, etc.

• Define the classes and their relationships, such as ParkingLot, Vehicle, Ticket, Payment

• Include methods for functionalities like parking a vehicle, issuing a ticket, processing payment

• Consider scalability and performance aspects in the design

• Implement data structures like queues for managing parking spots

Design a web crawler to efficiently crawl and index web pages.

• Consider using a breadth-first or depth-first search algorithm to traverse the web pages.

• Implement a system to handle duplicate content and avoid infinite loops.

• Use a priority queue to prioritize which pages to crawl next based on relevance or importance.

• Include a mechanism to handle dynamic content and JavaScript-rendered pages.

• Optimize the crawler for speed and efficiency by parallelizing requests and minimizing ...read more

HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.

• HashMap internally uses an array of linked lists to store key-value pairs.

• When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.

• If multiple keys hash to the same index, a linked list is used to handle collisions.

• HashMap allows null keys and values, but only one null key.

• Example: HashMap map = new HashMa...read more

Previous tech stack included Java, Spring Boot, Angular, and AWS.

• Java

• Spring Boot

• Angular

• AWS