Principal Staff Software Engineer

LinkedIn

You are given an unsorted array of integers. Describe an algorithm to find the length of the longest consecutive sequence of elements in the array. The consecutive elements do not need to be adjacent in the array. What is the time complexity of your solution? Can you optimize your solution to achieve O(n) time complexity? Explain your approach and provide the optimized code. Example: Given the array [100, 4, 200, 1, 3, 2], the longest consecutive sequence is [1, 2, 3, 4]. The length of this sequence is 4. Your algorithm should return 4. Constraints: The input array can contain positive and negative integers. The input array may contain duplicate values. The algorithm should handle edge cases such as an empty array. Explain your approach, provide pseudocode if necessary, and then implement your solution in a language of your choice. A brute force solution is acceptable but should be followed by the optimized solution.

LinkedIn

Let's design the LinkedIn feed. Consider the user experience, key features, scalability, and personalization aspects. For instance, how would you prioritize content from connections versus suggested content? How would you handle different content types like text, images, videos, and articles? How do you design a system to ensure that the feed remains responsive even with millions of active users? How would you personalize the feed to show users content they are most likely interested in, and what data would you use to achieve this personalization? Finally, how would you prevent the spread of misinformation or harmful content within the feed?

LinkedIn

Okay, let's explore your interest in LinkedIn. To help me understand your motivations, could you elaborate on why you are particularly interested in working at LinkedIn? I'm looking for specific reasons beyond just wanting a job. For instance, are you drawn to LinkedIn's mission of connecting professionals? Perhaps you're excited about the scale of the platform and the impact you could have on millions of users? Or maybe you admire the company's culture and values, such as its emphasis on transformation, integrity, collaboration, and results. It would be helpful to hear about specific projects or initiatives at LinkedIn that resonate with you. Have you been following LinkedIn's work in AI, education, or small business support? Are there any particular LinkedIn products that you find innovative or impactful? Are you inspired by the work of a specific team? Furthermore, how do you see your skills and experience aligning with LinkedIn's goals? What unique contributions do you believe you can make to the company, and how would working at LinkedIn help you grow professionally? I'm interested in understanding how your personal values align with LinkedIn's core principles, and why you believe this is the right place for you to advance your career.