LinkedIn Interview – Tips and Tricks on how to Stand Out!

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LinkedIn is a prominent business and employment-oriented social networking platform, accessible via websites and mobile applications. Established on December 28, 2002, and headquartered in Sunnyvale, California, LinkedIn enables users to connect with colleagues, showcase their professional experience and skills, search for jobs, and recruit talent. Available in numerous languages including European, Japanese, Korean, Indonesian, and Malay, LinkedIn boasts over 500 million members globally, with more than 18 million users in India alone.

Ranked as the 20th most popular website by Alexa Internet in October 2016, LinkedIn was acquired by Microsoft the same year. The company has been featured in Forb’s rankings, including #60 on America’s Best Employer List, #1867 on the Global 2000, and #715 in Market Value in 2016. It was also recognized as one of the Best Places to Work, ranking #14 in 2016 and #8 in 2017.

Recruitment Process

LinkedIn’s recruitment process for freshers as Software Development Engineers (SDEs) typically involves 5-6 rounds:

1. Online Round
2. Technical Round 1
3. Technical Round 2
4. Technical Round 3
5. Technical Round 4
6. System Design Round
7. HR Round

Academic Criteria

• A minimum of 60% in B.Tech, Class X, and XII.
• No active backlogs at the time of the interview.

Online Written Round

The online round usually consists of 2-3 coding problems with a duration of 1 hour. It may also include multiple-choice questions covering topics like data structures, algorithms, object-oriented programming (OOPs), databases (DBMS), networking, and Linux.

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Technical Rounds

Candidates who pass the written round proceed to the technical interviews. These interviews assess your knowledge in:

Data Structures and Algorithms (DSA)

1. Explain the differences between ArrayList and LinkedList in Java.
2. How would you detect a cycle in a linked list?
3. Describe the process of binary search.
4. What is the difference between a stack and a queue?
5. Explain how a priority queue works.
6. How do you implement a hash table?
7. Describe the merge sort algorithm.
8. How does quicksort work, and what are its time complexities?
9. Explain the concept of dynamic programming with an example.
10. What is the difference between depth-first search (DFS) and breadth-first search (BFS)?
11. How would you find the shortest path in a graph?
12. Describe how a binary search tree (BST) works.
13. Explain the concept of balancing in AVL trees.
14. What is a red-black tree, and how does it maintain balance?
15. How do you find the lowest common ancestor in a binary tree?
16. Explain the concept of memoization in dynamic programming.
17. Describe how you would reverse a linked list.
18. How would you implement a min-heap?
19. What are the differences between a singly linked list and a doubly linked list?
20. Explain the knapsack problem and its solutions.

Operating Systems (OS)

1. What is the purpose of an operating system?
2. Explain the concept of process scheduling.
3. How does the First-Come, First-Served (FCFS) scheduling algorithm work?
4. What is a kernel, and what are its functions?
5. Describe the concept of thrashing in operating systems.
6. What are the differences between a process and a thread?
7. Explain demand paging in operating systems.
8. What is fragmentation, and how does it affect system performance?
9. Describe inter-process communication (IPC).
10. What is context switching, and when does it occur?
11. How do operating systems handle starvation and aging?
12. Explain the differences between a dispatcher and a scheduler.
13. What are the different layers of the TCP/IP reference model?
14. Describe the various types of nodes in a network.
15. What is the purpose of DNS, and how does it work?
16. Explain the concept of load balancing.
17. What is a proxy server, and how does it function?
18. Describe the SMTP protocol and its use.
19. What is multiplexing in networking?
20. Explain the purpose and types of network protocols.

Networking

1. What are the different types of network topologies?
2. Explain the OSI model and its layers.
3. How does the TCP/IP model differ from the OSI model?
4. What is an IP address, and how is it structured?
5. Describe the differences between IPv4 and IPv6.
6. What is subnetting, and why is it used?
7. Explain the function of a router.
8. What is a firewall, and how does it enhance security?
9. Describe the process of DHCP.
10. What are the differences between TCP and UDP?
11. Explain how the DNS works.
12. What is a VPN, and how does it secure communication?
13. How does a switch differ from a hub?
14. What is the purpose of NAT?
15. Explain the process of port forwarding.
16. Describe how wireless networks operate.
17. What are the advantages of using fiber optics for networking?
18. Explain the concept of network latency.
19. What is bandwidth, and how is it measured?
20. Describe the role of MAC addresses in networking.

Database Management Systems (DBMS)

1. What are the different types of DBMS?
2. Explain the concept of normalization and its types.
3. What are the ACID properties in a database?
4. Describe the different types of keys in a relational model.
5. What is SQL, and what are its various types of commands?
6. Explain the differences between the E-R model and the relational model.
7. What is data abstraction in DBMS?
8. Describe the three levels of data abstraction.
9. What is a primary key, and why is it important?
10. Explain the concept of foreign keys in a database.
11. What are indexes, and how do they improve performance?
12. Describe the process of SQL injection.
13. What is an alias in SQL, and how is it used?
14. Explain the different types of joins in SQL.
15. What is a stored procedure, and how is it different from a function?
16. Describe the concept of triggers in a database.
17. What are views in SQL, and how are they used?
18. Explain the concept of transaction management in DBMS.
19. What are constraints in SQL, and what are their types?
20. Describe the different types of DBMS architecture.

Students from non-CS branches should prepare for subjects relevant to their field. Questions may also pertain to your resume, including past projects and problem-solving experiences. Occasionally, these rounds might include online coding challenges or puzzles.

System Design Round

This round focuses on design-based problems, such as designing a file server system, to evaluate your system architecture and design skills.

HR Round

The HR interview typically covers questions about your background and fit for the company, such as:

• Tell me about yourself.
• What is your family background?
• Discuss the projects mentioned in your resume.
• What challenges did you face during these projects?

Interview Experiences

Gaining insights from previous candidates’ experiences can be invaluable. We provide detailed interview experiences from those who have been through the process, offering you a competitive edge.

Application Portal

For those looking to apply, LinkedIn regularly updates job openings on their careers page. Additionally, you can stay informed about hiring challenges and hackathons by following relevant portals like Unstop.

By understanding LinkedIn’s recruitment process, you can better prepare yourself for each stage and increase your chances of success. Good luck!

If you are also looking for jobs, join our Placement Guaranteed Course designed by top IITians and Senior developers & get a Job guarantee of CTC upto 25 LPA – /placement-guarantee-program/