This interview process is for a Software Engineer position at LINE, specifically for the L6 level. It aims to assess a candidate's technical proficiency, problem-solving skills, system design capabilities, and cultural fit within the company.
Rounds·4
Timeline·~14d
Experience·5 - 10 yrs
Comp band·US$130000 - US$180000
Interview time·225 min
Evaluation
Preparation
Tips
Study plan
Fig · Study plan — 05 phases
01 / 05Phase 01 of 05
Weeks 1-2: DSA fundamentals and practice.
Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, trees, graphs, hash tables, heaps, sorting, searching, dynamic programming, and graph traversal algorithms. Practice at least 5-10 problems per topic.
Phase 02 of 05
Weeks 3-4: System Design principles and practice.
Weeks 3-4: Dive into System Design. Study concepts like scalability, availability, consistency, load balancing, caching, databases (SQL vs. NoSQL), message queues, and API design. Review common system design interview questions and practice designing systems like Twitter feed, URL shortener, etc.
Phase 03 of 05
Week 5: OS and Networking basics.
Week 5: Brush up on Operating Systems and Networking concepts. Understand processes, threads, memory management, concurrency, TCP/IP, HTTP/HTTPS protocols, and DNS.
Phase 04 of 05
Week 6: Behavioral preparation and STAR method.
Week 6: Prepare for Behavioral and Situational questions. Reflect on your past experiences, identify key projects, and prepare stories using the STAR method. Understand LINE's values and how your experiences align.
Phase 05 of 05
Week 7: Mock interviews and final review.
Week 7: Mock Interviews and Review. Conduct mock interviews with peers or mentors to simulate the actual interview environment. Review weak areas identified during practice and mock interviews.
Questions
Locations
Fig · Regions — 02 locations
01 / 02Location
Interview focus
Common questions
Tips
Location
Interview focus
Common questions
Tips
Rounds
Expand a step for evaluation criteria, sample questions, and prep notes.
Data Structures And Algorithms Interview · 60 min · Software Engineer (Peer)
This round focuses on your core programming skills. You will be asked to solve 1-2 coding problems, typically involving data structures and algorithms. The interviewer will assess your ability to write clean, efficient, and correct code, as well as your problem-solving approach and communication skills. Expect to explain your thought process throughout the coding exercise.
What they look for
Evaluation
Sample questions
Given an array of integers, find the contiguous subarray with the largest sum.
Implement a function to reverse a linked list.
Find the k-th smallest element in a binary search tree.
Prep for this round
Common rejection reasons
System Design Interview · 60 min · Senior Software Engineer / Architect
This round evaluates your ability to design complex, scalable systems. You will be given an open-ended problem (e.g., design Twitter, design a URL shortener) and expected to propose a high-level architecture. The interviewer will probe your design choices, ask about trade-offs, and explore how your system would handle scale, availability, and specific features.
What they look for
Evaluation
Sample questions
Design a news feed system like Facebook's.
Design a rate limiter.
Design a distributed key-value store.
Prep for this round
Common rejection reasons
Behavioral Interview · 45 min · Hiring Manager / Team Lead
This round focuses on your behavioral and soft skills. The interviewer will ask questions about your past experiences, how you handle challenges, work in teams, and your motivations. The goal is to understand your personality, work style, and how well you would fit into the team and LINE's culture. Use the STAR method to structure your answers.
What they look for
Evaluation
Sample questions
Tell me about a time you faced a significant technical challenge and how you overcame it.
Describe a situation where you had a conflict with a colleague. How did you resolve it?
How do you stay updated with the latest technologies?
Why are you interested in working at LINE?
Prep for this round
Common rejection reasons
Technical Leadership & Strategy · 60 min · Director of Engineering / Senior Engineering Manager
This final round, often with a senior leader, focuses on your overall experience, technical leadership, strategic thinking, and potential impact on the team and company. Expect questions that delve into your career aspirations, how you approach mentoring, and how you align technical decisions with business objectives. This is also an opportunity for you to ask high-level questions about the team and company direction.
What they look for
Evaluation
Sample questions
Describe a time you led a project from conception to completion. What were the key challenges and successes?
How would you mentor junior engineers on your team?
What technical trends do you think will most impact LINE in the next 5 years?
Prep for this round
Common rejection reasons
DSA
Frequently reported on LINE loops
Other guides
