# Engineer II
**Role:** Software Engineer · **Level:** L3
**Company:** [Samsung](https://scaleengineer.com/companies/samsung)
**Difficulty:** Medium
**Salary:** US$85000 - US$120000
**Experience:** 2 - 5
**Timeline:** ~14 days
This interview process is for an Engineer II (L3) position at Samsung, focusing on assessing core software engineering skills, problem-solving abilities, and cultural fit.
Canonical: https://scaleengineer.com/interviews/samsung/l3-software-engineer
---
## Overall evaluation

- Technical Skills
- Behavioral and Soft Skills
- System Design (if applicable)

## Questions asked

- Write a function to reverse a linked list.
- Given an array of integers, find the contiguous subarray with the largest sum.
- Explain the difference between a process and a thread.
- Describe a situation where you had to optimize code for performance. What steps did you take?
- How would you design a URL shortening service?
- Tell me about a time you failed. What did you learn from it?
- What are your strengths and weaknesses as a software engineer?
- How do you stay updated with new technologies?

## Preparation tips

### lists

- Review fundamental data structures and algorithms.
- Practice coding problems on platforms like LeetCode, HackerRank, or GeeksforGeeks.
- Understand core computer science concepts (OS, Databases, Networking).
- Prepare for behavioral questions using the STAR method (Situation, Task, Action, Result).
- Research Samsung's products, values, and recent news.
- Brush up on system design concepts if the role requires it.
- Be ready to discuss your past projects in detail.

### studyPlan

- {"title":"Data Structures and Algorithms","longDescription":"Weeks 1-2: Focus on fundamental data structures (Arrays, Linked Lists, Stacks, Queues, Trees, Graphs, Hash Tables) and their common algorithms (Sorting, Searching, Traversal). Practice problems related to these topics.","shortDescription":"Weeks 1-2: Data Structures & Algorithms fundamentals. Practice problems."}
- {"title":"Advanced Algorithms","longDescription":"Weeks 3-4: Deep dive into algorithmic techniques like Dynamic Programming, Greedy Algorithms, Backtracking, and graph algorithms. Solve medium to hard difficulty problems.","shortDescription":"Weeks 3-4: Advanced Algorithms (DP, Greedy, Graphs). Solve medium/hard problems."}
- {"title":"Behavioral Preparation","longDescription":"Week 5: Prepare for behavioral questions. Think about specific examples from your experience that demonstrate teamwork, problem-solving, leadership, and handling challenges. Practice articulating these using the STAR method.","shortDescription":"Week 5: Behavioral questions preparation (STAR method)."}
- {"title":"System Design","longDescription":"Week 6: If applicable to the role, study system design concepts. Focus on scalability, availability, databases, caching, load balancing, and common design patterns. Review case studies.","shortDescription":"Week 6: System Design concepts (Scalability, Databases, Caching)."}
- {"title":"Mock Interviews","longDescription":"Week 7: Mock interviews. Practice coding problems under timed conditions and simulate the interview environment. Get feedback from peers or mentors.","shortDescription":"Week 7: Mock interviews and feedback."}
- {"title":"Final Review and Research","longDescription":"Week 8: Final review of all topics. Research Samsung specifically – its products, recent news, company culture, and values. Prepare questions to ask the interviewer.","shortDescription":"Week 8: Final review, Samsung research, prepare questions."}

## Location differences

- {"location":"Seoul, South Korea","differences":{"tips":["Research Samsung's presence and recent activities in this specific region.","Be prepared to discuss how your skills align with local market demands.","Practice answering behavioral questions with examples relevant to a collaborative work environment."],"interviewFocus":["Adaptability to local work culture and team dynamics.","Communication skills in the local language (if applicable).","Understanding of local market trends and customer needs."],"commonQuestions":["Describe a challenging project you worked on in a team.","How do you handle tight deadlines and pressure?","Tell me about a time you disagreed with a colleague or manager. How did you resolve it?"]}}
- {"location":"San Francisco, USA","differences":{"tips":["Be ready to dive deep into technical details and explain your thought process.","Prepare to discuss your contributions to open-source projects or personal coding projects.","Familiarize yourself with common US tech industry interview patterns."],"interviewFocus":["Technical depth in specific areas relevant to the US market (e.g., distributed systems, specific programming languages).","Problem-solving and analytical skills.","Experience with agile methodologies."],"commonQuestions":["How do you approach debugging complex issues?","Describe your experience with cloud platforms (AWS, Azure, GCP).","What are your thoughts on microservices architecture?"]}}
- {"location":"Bangalore, India","differences":{"tips":["Highlight projects where you demonstrated strong Java skills.","Be prepared to discuss your understanding of object-oriented programming principles.","Research Samsung's enterprise solutions and their applications."],"interviewFocus":["Proficiency in Java and Spring Boot.","Experience with enterprise-level software development.","Understanding of software development lifecycle (SDLC)."],"commonQuestions":["How do you ensure code quality and maintainability?","Tell me about your experience with CI/CD pipelines.","What are your favorite data structures and algorithms, and why?"]}}

## Round 1: Data Structures and Algorithms
**Type:** Technical Interview (Coding) · **Difficulty:** Medium · **Duration:** 45 min
Coding challenge focusing on data structures and algorithms.
This round focuses on assessing your core programming skills. You will be asked to solve 1-2 coding problems, typically involving data structures and algorithms. The interviewer will evaluate your approach to problem-solving, your ability to write clean and efficient code, and your understanding of time and space complexity. You'll also be asked to explain your thought process throughout the problem-solving exercise.
**Interviewers look for:** Logical thinking; Ability to translate requirements into code; Clean and efficient code; Understanding of time and space complexity
**Evaluation criteria:** Problem-solving ability; Algorithmic knowledge; Coding proficiency; Communication
**Common rejection reasons:** Inability to articulate thought process clearly.; Incorrect or inefficient solutions to coding problems.; Lack of fundamental CS knowledge.; Poor communication skills.
## Questions

- Given a binary tree, find its inorder traversal.
- Implement a function to check if a string is a palindrome.
- Find the kth smallest element in a sorted matrix.

## Preparation tips

- Practice coding problems on platforms like LeetCode.
- Focus on understanding the 'why' behind different data structures and algorithms.
- Practice explaining your code and thought process out loud.

## Round 2: System Design
**Type:** System Design Interview · **Difficulty:** Hard · **Duration:** 60 min
Design a scalable software system.
This round evaluates your ability to design and architect software systems. You'll be given a high-level problem (e.g., design Twitter's feed, design a URL shortener) and expected to break it down, discuss components, data models, APIs, scalability, and potential bottlenecks. The focus is on your thought process and ability to make reasoned design decisions.
**Interviewers look for:** Ability to design scalable and reliable systems.; Understanding of distributed systems concepts.; Knowledge of databases, caching, and messaging queues.; Ability to justify design choices.
**Evaluation criteria:** System design approach; Scalability and performance; Trade-off analysis; Database knowledge; API design
**Common rejection reasons:** Lack of understanding of system design principles.; Inability to handle scalability and performance considerations.; Poor trade-off analysis.; Not considering edge cases or failure scenarios.
## Questions

- Design a system to handle real-time notifications for a social media platform.
- How would you design a distributed key-value store?
- Design an API for a ride-sharing service.

## Preparation tips

- Study common system design patterns and concepts.
- Read system design case studies.
- Practice designing systems like Twitter, Facebook, Uber, etc.
- Understand trade-offs between different technologies and approaches.

## Round 3: Behavioral and Managerial
**Type:** Behavioral Interview · **Difficulty:** Medium · **Duration:** 30 min
Assessing behavioral competencies and cultural fit.
This round focuses on your behavioral and situational responses. The interviewer will ask questions about your past experiences, how you handle specific work scenarios, your strengths and weaknesses, and your career aspirations. The goal is to understand your personality, work ethic, and how well you would fit into the team and company culture.
**Interviewers look for:** How you handle challenges and conflicts.; Your ability to work in a team.; Your passion for technology and learning.; Alignment with Samsung's values.
**Evaluation criteria:** Teamwork and collaboration; Problem-solving approach; Adaptability; Motivation and career goals; Cultural fit
**Common rejection reasons:** Poor communication or interpersonal skills.; Lack of enthusiasm or motivation.; Inability to provide specific examples for behavioral questions.; Mismatch with company culture or values.
## Questions

- Tell me about a time you had to work with a difficult team member.
- Describe a project where you took initiative.
- What are your long-term career goals?

## Preparation tips

- Prepare examples using the STAR method for common behavioral questions.
- Be honest and authentic in your responses.
- Show enthusiasm for the role and the company.
- Have thoughtful questions prepared for the interviewer.