# Software Engineer
**Role:** Software Engineer · **Level:** L6
**Company:** [smartnews](https://scaleengineer.com/companies/smartnews)
**Difficulty:** Hard
**Salary:** US$140000 - US$180000
**Experience:** 5 - 10
**Timeline:** ~14 days
The Software Engineer L6 interview process at SmartNews is designed to assess a candidate's technical expertise, problem-solving abilities, system design skills, and cultural fit. The process typically involves multiple rounds, including technical screenings, coding challenges, system design discussions, and behavioral interviews.
Canonical: https://scaleengineer.com/interviews/smartnews/l6-software-engineer
---
## Overall evaluation

- Technical Skills
- Communication & Collaboration
- Cultural Fit & Behavioral Aspects

## Questions asked

- Design a system to recommend articles to users based on their reading history.
- How would you handle a sudden surge in traffic to our platform?
- Describe a challenging technical problem you faced and how you solved it.
- What are the trade-offs between monolithic and microservices architectures?
- Explain the concept of eventual consistency.
- How do you ensure the security of a web application?
- Tell me about a time you had to work with a difficult colleague.
- What are your strengths and weaknesses as a software engineer?
- How do you stay updated with new technologies?
- What motivates you to work at SmartNews?

## Preparation tips

### lists

- Review fundamental computer science concepts (data structures, algorithms, operating systems, databases).
- Practice coding problems on platforms like LeetCode, HackerRank, or similar.
- Study system design principles and common architectural patterns.
- Prepare for behavioral questions by reflecting on past experiences using the STAR method.
- Research SmartNews's products, mission, and recent news.
- Understand the technologies and tools commonly used at SmartNews.
- Prepare thoughtful questions to ask the interviewers.

### studyPlan

- {"title":"Data Structures & Algorithms","longDescription":"Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, trees, graphs, hash tables, sorting, searching, dynamic programming, and greedy algorithms. Practice implementing these and analyzing their time and space complexity. Aim for at least 50-75 LeetCode medium/hard problems.","shortDescription":"Weeks 1-2: DSA fundamentals and practice (50-75 problems)."}
- {"title":"System Design","longDescription":"Weeks 3-4: Dive into System Design. Study concepts like scalability, availability, reliability, load balancing, caching, databases (SQL vs. NoSQL), message queues, and microservices. Review common system design interview questions and practice designing systems like Twitter feed, URL shortener, or a distributed cache.","shortDescription":"Weeks 3-4: System Design principles and practice."}
- {"title":"Behavioral & Cultural Fit","longDescription":"Week 5: Prepare for Behavioral and Situational Questions. Reflect on your past projects and experiences. Use the STAR method (Situation, Task, Action, Result) to structure your answers for questions about teamwork, leadership, conflict resolution, and handling failures. Also, research SmartNews's company culture and values.","shortDescription":"Week 5: Behavioral questions (STAR method) and company research."}
- {"title":"Mock Interviews & Final Review","longDescription":"Week 6: Mock Interviews and Review. Conduct mock interviews with peers or mentors to simulate the actual interview environment. Focus on improving communication, problem-solving approach, and time management. Review any weak areas identified during practice.","shortDescription":"Week 6: Mock interviews and final review."}

## Location differences

- {"location":"Tokyo","differences":{"tips":["Emphasize experience with global-scale systems and internationalization.","Be prepared to discuss specific challenges related to operating in a particular region (e.g., data privacy regulations, latency issues).","Highlight any experience with local market nuances or user behaviors.","Showcase adaptability and ability to work effectively in a diverse team environment."],"interviewFocus":["Deep understanding of distributed systems and scalability.","Experience with large-scale data processing and analysis.","Proficiency in cloud-native technologies and microservices architecture.","Strong problem-solving skills and ability to handle complex technical challenges.","Leadership potential and ability to mentor junior engineers."],"commonQuestions":["How would you design a news feed system for a global audience?","Discuss a time you had to deal with a major production issue. What was your approach?","Explain the trade-offs between different database technologies for a high-traffic application.","How do you ensure code quality and maintainability in a large codebase?","Describe your experience with cloud platforms like AWS, GCP, or Azure."]}}
- {"location":"San Francisco","differences":{"tips":["Focus on experience with US market trends and user expectations.","Be ready to discuss specific technologies prevalent in the US tech landscape.","Highlight experience with agile development methodologies and fast-paced environments.","Demonstrate strong communication skills and ability to articulate technical concepts clearly."],"interviewFocus":["Expertise in building and scaling high-performance web applications.","Strong understanding of data structures, algorithms, and software design patterns.","Experience with modern frontend and backend technologies.","Ability to collaborate effectively with cross-functional teams (product, design, QA).","Proactive approach to identifying and solving technical problems."],"commonQuestions":["Design a real-time analytics pipeline for user engagement metrics.","How would you optimize a system for low latency and high throughput?","Discuss your experience with A/B testing frameworks and methodologies.","Tell me about a time you disagreed with a technical decision. How did you handle it?","What are your thoughts on the future of AI in content delivery?"]}}

## Round 1: Coding Challenge
**Type:** Technical Coding Interview · **Difficulty:** Medium · **Duration:** 45 min
Assess core programming skills and problem-solving with coding challenges.
This round focuses on assessing your core programming skills and problem-solving abilities. You will be given one or two coding problems to solve, typically involving data structures and algorithms. The interviewer will evaluate your ability to understand the problem, devise an efficient solution, write clean and correct code, and explain your thought process. Expect to discuss time and space complexity.
**Interviewers look for:** A candidate who can translate a problem into working code.; Someone who can explain their approach and reasoning.; Attention to detail in code implementation.; Ability to identify and discuss edge cases.
**Evaluation criteria:** Coding proficiency; Problem-solving skills; Understanding of data structures and algorithms; Ability to write clean and maintainable code; Communication of thought process
**Common rejection reasons:** Inability to articulate thought process clearly.; Lack of fundamental programming knowledge.; Poor problem-solving approach.; Inability to write clean and efficient code.; Not asking clarifying questions.
## Questions

- Given an array of integers, return indices of the two numbers such that they add up to a specific target.
- Implement a function to reverse a linked list.
- Find the kth smallest element in a Binary Search Tree.

## Preparation tips

- Practice coding problems on platforms like LeetCode.
- Be comfortable explaining your approach before coding.
- Write clean, well-commented code.
- Test your code with various edge cases.
- Discuss time and space complexity of your solution.

## Round 2: System Design
**Type:** System Design Interview · **Difficulty:** Hard · **Duration:** 60 min
Assess ability to design scalable and robust systems.
This round evaluates your ability to design and architect complex, scalable systems. You'll be presented with a high-level problem (e.g., design a news feed, a URL shortener, a real-time analytics system) and expected to discuss various aspects of the design, including data models, APIs, scalability strategies, caching, load balancing, and fault tolerance. You should be prepared to justify your design choices and discuss trade-offs.
**Interviewers look for:** A candidate who can design complex systems from scratch.; Someone who can justify design choices and discuss trade-offs.; Understanding of how different components interact.; Ability to handle ambiguity and make reasonable assumptions.
**Evaluation criteria:** System design and architecture; Scalability and performance considerations; Reliability and fault tolerance; Trade-off analysis; Understanding of various system components (databases, caches, load balancers, etc.)
**Common rejection reasons:** Lack of understanding of distributed systems principles.; Inability to design scalable and reliable solutions.; Poor trade-off analysis.; Not considering failure scenarios.; Not asking clarifying questions about requirements.
## Questions

- Design a system like Twitter's timeline.
- Design a URL shortening service like Bitly.
- Design a system to count unique visitors to a website in real-time.

## Preparation tips

- Study common system design patterns and architectures.
- Practice designing systems for scale.
- Be prepared to discuss databases, caching strategies, and message queues.
- Think about failure scenarios and how to mitigate them.
- Clearly articulate your design and the reasoning behind it.

## Round 3: Behavioral Interview
**Type:** Behavioral & Managerial Interview · **Difficulty:** Medium · **Duration:** 45 min
Assess behavioral competencies, cultural fit, and motivation.
This round focuses on your past experiences, behavioral competencies, and cultural fit. You'll be asked questions about how you've handled specific situations in previous roles, such as dealing with conflict, leading projects, overcoming challenges, or working in a team. The interviewer aims to understand your working style, motivations, and how you would contribute to the team and company culture. Use the STAR method (Situation, Task, Action, Result) to provide clear and concise answers.
**Interviewers look for:** A candidate who aligns with SmartNews's culture and values.; Someone who can demonstrate relevant past experiences.; Good communication and interpersonal skills.; Enthusiasm for the role and the company.
**Evaluation criteria:** Behavioral competencies (teamwork, leadership, problem-solving); Cultural fit; Motivation and career goals; Communication skills; Past experiences and achievements
**Common rejection reasons:** Lack of alignment with company values.; Poor communication or interpersonal skills.; Negative attitude or lack of enthusiasm.; Inability to provide specific examples of past behavior.; Not demonstrating ownership or initiative.
## Questions

- Tell me about a time you had to deal with a difficult stakeholder. How did you manage the situation?
- Describe a project where you took initiative or demonstrated leadership.
- How do you handle constructive criticism?
- Why are you interested in SmartNews?

## Preparation tips

- Prepare examples for common behavioral questions using the STAR method.
- Reflect on your strengths, weaknesses, and career aspirations.
- Research SmartNews's mission, values, and culture.
- Be prepared to discuss why you are interested in this role and company.
- Show enthusiasm and a positive attitude.

## Round 4: Team Fit
**Type:** Team Fit Interview · **Difficulty:** Medium · **Duration:** 45 min
Assess fit with the specific engineering team.
In this round, you'll meet with potential team members or the team lead. The focus is on assessing your fit within the specific team you'd be joining. This may involve discussing your experience in relation to the team's current projects, your preferred working style, and how you collaborate. It's also an opportunity for you to ask detailed questions about the team's work, challenges, and culture.
**Interviewers look for:** A candidate who can integrate well with the existing team.; Someone who understands and is excited about the team's mission.; Good communication and collaboration skills within a team context.; Technical skills relevant to the team's current projects.
**Evaluation criteria:** Technical alignment with the team's needs; Collaboration and teamwork potential; Understanding of the team's domain; Cultural fit within the team; Enthusiasm for the team's projects
**Common rejection reasons:** Lack of alignment with the team's technical direction.; Inability to collaborate effectively with the team.; Not demonstrating a good understanding of the team's work.; Poor fit with team dynamics.; Lack of enthusiasm for the specific team's projects.
## Questions

- How would you approach debugging a complex issue in our current microservices architecture?
- What are your thoughts on our current approach to data processing?
- Describe a time you mentored a junior engineer.

## Preparation tips

- Understand the specific team's responsibilities and projects.
- Prepare questions about the team's technical challenges and roadmap.
- Think about how your skills and experience can contribute to the team.
- Be ready to discuss your preferred collaboration style.