# Software Engineer
**Role:** Software Engineer · **Level:** L4
**Company:** [Verkada](https://scaleengineer.com/companies/verkada)
**Difficulty:** Medium to Hard
**Salary:** US$120000 - US$160000
**Experience:** 3 - 7
**Timeline:** ~14 days
Verkada's Software Engineer L4 interview process is designed to assess a candidate's technical proficiency, problem-solving abilities, and cultural fit within the company. The process typically involves multiple rounds, including technical interviews, a system design interview, and behavioral interviews.
Canonical: https://scaleengineer.com/interviews/verkada/l4-software-engineer
---
## Overall evaluation

- Technical Skills
- Communication
- Behavioral and Cultural Fit

## Questions asked

- Given an array of integers, find the contiguous subarray with the largest sum.
- Design a URL shortening service like TinyURL.
- Tell me about a time you failed and what you learned from it.
- How would you design a system to handle real-time notifications for a large user base?
- Describe a situation where you had to mentor a junior engineer.
- What are the trade-offs between SQL and NoSQL databases?
- How do you handle production issues under pressure?
- Explain the concept of eventual consistency.
- Describe a challenging bug you encountered and how you debugged it.
- How do you stay updated with new technologies?

## Preparation tips

### lists

- Review fundamental data structures and algorithms.
- Practice coding problems on platforms like LeetCode (focus on Medium difficulty).
- Study system design principles and common architectural patterns.
- Prepare examples for common behavioral questions using the STAR method.
- Research Verkada's products and company culture.
- Understand the responsibilities of an L4 Software Engineer at Verkada.

### studyPlan

- {"title":"Data Structures and Algorithms","longDescription":"Weeks 1-2: Focus on core data structures (Arrays, Linked Lists, Trees, Graphs, Hash Tables) and algorithms (Sorting, Searching, Dynamic Programming, Greedy Algorithms). Practice implementing these in your preferred language. Aim for 5-7 problems per data structure/algorithm category.","shortDescription":"Weeks 1-2: Data Structures & Algorithms fundamentals. Practice 5-7 problems per topic."}
- {"title":"System Design","longDescription":"Weeks 3-4: Dive into system design. Study concepts like scalability, availability, reliability, databases (SQL vs. NoSQL), caching, load balancing, and microservices. Work through common system design case studies (e.g., designing Twitter, Uber, Netflix).","shortDescription":"Weeks 3-4: System Design principles and case studies."}
- {"title":"Behavioral Preparation","longDescription":"Week 5: Prepare for behavioral interviews. Identify key projects from your past experience and frame them using the STAR method (Situation, Task, Action, Result). Focus on examples that demonstrate leadership, teamwork, problem-solving, and handling conflict.","shortDescription":"Week 5: Behavioral interview preparation using STAR method."}
- {"title":"Mock Interviews & Company Research","longDescription":"Week 6: Mock interviews. Conduct mock interviews with peers or mentors, focusing on both technical and behavioral aspects. Get feedback on your communication, problem-solving approach, and coding style. Review Verkada's mission and values.","shortDescription":"Week 6: Mock interviews and company research."}

## Location differences

- {"location":"San Mateo, CA","differences":{"tips":["Research common technologies used in the specific region.","Be prepared to discuss your experience working with diverse teams.","Highlight any experience with local regulatory or compliance standards if applicable."],"interviewFocus":["Adaptability to local market trends and technologies.","Understanding of regional engineering challenges.","Collaboration with geographically distributed teams."],"commonQuestions":["Discuss a challenging technical problem you solved at your previous company.","How do you approach debugging a complex system?","Describe a time you had to work with a difficult teammate."]}}
- {"location":"Austin, TX","differences":{"tips":["Familiarize yourself with AWS/GCP/Azure services relevant to distributed systems.","Practice explaining complex system designs clearly.","Be ready to discuss your contributions to team processes and improvements."],"interviewFocus":["Emphasis on cloud-native technologies and distributed systems.","Understanding of large-scale data processing.","Experience with agile development methodologies."],"commonQuestions":["Tell me about a project where you had to optimize performance.","How do you ensure the scalability of your code?","Describe a situation where you had to disagree with a technical decision."]}}

## Round 0: HR Screen
**Type:** HR / Recruiter Screen · **Difficulty:** Medium · **Duration:** 30 min
Initial screening to assess basic qualifications and cultural fit.
This initial or final touchpoint with HR/Recruiting aims to ensure alignment on logistics, expectations, and overall fit. They will discuss your background in more detail, answer any questions you have about the company or the role, and cover aspects like compensation and benefits. It's also an opportunity for them to gauge your enthusiasm and communication skills.
**Interviewers look for:** Deep understanding of the candidate's past work.; Ability to clearly explain technical concepts and challenges.; Enthusiasm for Verkada's mission and the specific role.; Good communication and interpersonal skills.; Alignment on role expectations and career growth.
**Evaluation criteria:** Understanding of previous projects and contributions; Technical depth in areas of expertise; Communication clarity; Enthusiasm for the role and company; Alignment of expectations
**Common rejection reasons:** Lack of clarity on technical contributions.; Inability to articulate project details.; Poor communication of technical challenges and solutions.; Lack of enthusiasm or engagement.; Unrealistic salary expectations.
## Questions

- Can you walk me through your resume and highlight your most relevant experience for this role?
- What are your salary expectations?
- Why are you interested in Verkada?

## Preparation tips

- Have your resume and project details readily available.
- Prepare thoughtful questions about the role, team, and company culture.
- Be ready to discuss your salary expectations.
- Showcase your enthusiasm for the opportunity.

## Round 1: Coding Round 1
**Type:** Technical Interview (Coding) · **Difficulty:** Medium · **Duration:** 45 min
Assess coding proficiency with data structures and algorithms.
This round focuses on your core programming skills. You will be asked to solve one or two 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 approach to problem-solving and your ability to explain your thought process.
**Interviewers look for:** Strong grasp of fundamental data structures and algorithms.; Clean and efficient code.; Logical thinking and systematic approach to problem-solving.; Ability to communicate technical ideas effectively.
**Evaluation criteria:** Correctness of the solution; Efficiency of the solution (time and space complexity); Code clarity and readability; Problem-solving approach; Ability to explain the solution
**Common rejection reasons:** Inability to articulate thought process clearly.; Poor coding practices or syntax errors.; Fundamental misunderstanding of data structures or algorithms.; Inability to solve medium-difficulty problems within the time limit.
## Questions

- Given a binary tree, find its inorder traversal.
- Implement a function to find the k-th smallest element in an unsorted array.

## Preparation tips

- Practice coding problems on platforms like LeetCode.
- Focus on understanding the time and space complexity of your solutions.
- Write code that is well-structured and easy to read.
- Be prepared to explain your approach before you start coding.

## Round 2: System Design Round
**Type:** System Design Interview · **Difficulty:** Hard · **Duration:** 60 min
Assess ability to design scalable and reliable software systems.
This round evaluates your ability to design scalable, reliable, and maintainable software systems. You will be presented with a high-level problem (e.g., design a social media feed, a URL shortener) and expected to design a system that meets specified requirements. This includes choosing appropriate technologies, designing APIs, database schemas, and considering aspects like scalability, availability, and fault tolerance.
**Interviewers look for:** Ability to design complex systems from scratch.; Knowledge of distributed systems, databases, caching, and load balancing.; Sound judgment in making design decisions and justifying trade-offs.; Consideration of edge cases and failure scenarios.
**Evaluation criteria:** Scalability of the design; Reliability and availability; Trade-off analysis; Understanding of distributed systems concepts; Ability to handle scale and performance requirements
**Common rejection reasons:** Inability to design a scalable and reliable system.; Lack of understanding of fundamental system design concepts.; Poor trade-off analysis.; Failure to consider edge cases and failure modes.
## Questions

- Design a system to count unique visitors to a website in real-time.
- Design a distributed key-value store.

## Preparation tips

- Study common system design patterns and architectures.
- Practice designing systems for scale.
- Be prepared to discuss trade-offs between different design choices.
- Understand concepts like CAP theorem, eventual consistency, and database sharding.

## Round 3: Behavioral Round
**Type:** Behavioral Interview · **Difficulty:** Medium · **Duration:** 45 min
Assess cultural fit, past experiences, and behavioral competencies.
This round focuses on your past experiences, work style, and how you align with Verkada's culture and values. You'll be asked behavioral questions designed to understand how you've handled various situations in the past. The interviewer will look for examples that demonstrate your problem-solving skills, teamwork, leadership potential, and overall fit within the company.
**Interviewers look for:** Evidence of collaboration and teamwork.; Proactive problem-solving and initiative.; Adaptability and willingness to learn.; Alignment with Verkada's mission and values.; Honesty and integrity.
**Evaluation criteria:** Behavioral competencies (teamwork, leadership, problem-solving); Cultural fit with Verkada's values; Motivation and career aspirations; Past experiences and impact; Self-awareness and reflection
**Common rejection reasons:** Lack of self-awareness.; Inability to provide specific examples.; Poor communication of past experiences.; Mismatch with company values or team dynamics.; Negative attitude or blaming others.
## Questions

- Tell me about a time you had to deal with ambiguity.
- Describe a situation where you disagreed with your manager. How did you handle it?
- What motivates you in a work environment?

## Preparation tips

- Prepare specific examples using the STAR method.
- Reflect on your strengths and weaknesses.
- Understand Verkada's core values and how your experiences align.
- Be prepared to discuss your career goals and why you're interested in Verkada.