# Software Engineer
**Role:** Software Engineer · **Level:** Engineer
**Company:** [Commvault](https://scaleengineer.com/companies/commvault)
**Difficulty:** Medium
**Salary:** US$80000 - US$120000
**Experience:** 1 - 3
**Timeline:** ~7 days
Commvault is seeking a talented Software Engineer at the Engineer level to join our dynamic team. This role involves designing, developing, and maintaining innovative software solutions that drive our core business. We are looking for individuals with a strong technical foundation, problem-solving skills, and a passion for creating high-quality software.
Canonical: https://scaleengineer.com/interviews/commvault/engineer-software-engineer
---
## Overall evaluation

- Technical Skills
- Communication Skills
- Behavioral and Cultural Fit

## Questions asked

- Write a function to reverse a linked list.
- Explain the difference between a process and a thread.
- Describe a situation where you had to debug a complex issue. How did you approach it?
- What are your strengths and weaknesses as a software engineer?
- How would you design a URL shortening service?
- Tell me about a time you failed and what you learned from it.
- What is polymorphism?
- How do you ensure the quality of your code?
- What interests you about Commvault?
- Do you have any questions for us?

## Preparation tips

### lists

- Review fundamental computer science concepts, including data structures, algorithms, and operating systems.
- Practice coding problems on platforms like LeetCode, HackerRank, or similar.
- Understand object-oriented programming principles and design patterns.
- Be prepared to discuss your past projects in detail, focusing on your contributions and the challenges you faced.
- Research Commvault's products, services, and company culture.
- Prepare questions to ask the interviewer about the role, team, and company.

### 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, graph traversal). Practice implementing these in your preferred language. Review Big O notation for time and space complexity analysis.","shortDescription":"Weeks 1-2: Data Structures & Algorithms fundamentals. Practice implementations and complexity analysis."}
- {"title":"Object-Oriented Programming and System Design","longDescription":"Weeks 3-4: Deep dive into object-oriented programming (OOP) concepts (encapsulation, inheritance, polymorphism, abstraction) and common design patterns (e.g., Singleton, Factory, Observer). Study system design principles, focusing on scalability, reliability, and maintainability.","shortDescription":"Weeks 3-4: OOP, Design Patterns, and System Design basics. Focus on scalability and reliability."}
- {"title":"Behavioral Preparation","longDescription":"Week 5: Prepare for behavioral questions by reflecting on your past experiences using the STAR method (Situation, Task, Action, Result). Research Commvault's values and mission, and think about how your experiences align.","shortDescription":"Week 5: Behavioral preparation using STAR method. Research Commvault's values."}
- {"title":"Technology Stack and Company Research","longDescription":"Week 6: Review specific technologies mentioned in the job description (e.g., specific programming languages, databases, cloud platforms). Practice coding challenges related to these technologies. Prepare questions for the interviewer.","shortDescription":"Week 6: Technology-specific review and practice. Prepare questions for the interviewer."}

## Location differences

- {"location":"India","differences":{"tips":["Research Commvault's presence and projects in this specific region.","Be prepared to discuss how your skills align with local industry needs.","Highlight any experience working in diverse or international teams."],"interviewFocus":["Adaptability to local work culture.","Understanding of local market trends.","Communication skills in the local language (if applicable)."],"commonQuestions":["Tell me about a challenging project you worked on.","How do you handle tight deadlines?","Describe a time you disagreed with a team member."]}}
- {"location":"USA","differences":{"tips":["Familiarize yourself with Commvault's US customer base and product applications.","Be ready to articulate your contributions in terms of business impact.","Emphasize your ability to collaborate effectively in a remote or hybrid US-based team."],"interviewFocus":["Proficiency in specific technologies relevant to the US market.","Understanding of US business practices and communication styles.","Experience with large-scale systems."],"commonQuestions":["What are your thoughts on agile methodologies?","How do you approach code reviews?","Describe your experience with cloud platforms."]}}

## Round 1: Technical Screening - Coding Challenge
**Type:** Technical Screening · **Difficulty:** Medium · **Duration:** 45 min
Assess fundamental coding skills and problem-solving using data structures and algorithms.
This initial round focuses on assessing your fundamental programming skills and problem-solving abilities. You will be asked to solve coding problems, typically involving data structures and algorithms. The interviewer will evaluate your approach, the efficiency of your solution, and your ability to write clean, working code. Expect to discuss your thought process and justify your choices.
**Interviewers look for:** A systematic approach to problem-solving.; Clean and efficient code.; Understanding of time and space complexity.; Ability to explain their thought process.
**Evaluation criteria:** Problem-solving skills; Understanding of data structures and algorithms; Coding proficiency; Logical thinking
**Common rejection reasons:** Inability to articulate solutions clearly.; Lack of fundamental programming knowledge.; Poor problem-solving approach.
## Questions

- Given an array of integers, find the contiguous subarray with the largest sum.
- Implement a function to check if a binary tree is a Binary Search Tree (BST).
- Find the first non-repeating character in a string.

## Preparation tips

- Practice coding problems on platforms like LeetCode or HackerRank.
- Review common data structures and algorithms.
- Be comfortable explaining your code and its complexity.
- Practice thinking out loud.

## Round 2: System Design
**Type:** System Design Interview · **Difficulty:** Hard · **Duration:** 60 min
Assess ability to design scalable and robust software systems.
This round delves into your ability to design and architect software systems. You'll be presented with a high-level problem (e.g., design a social media feed, a URL shortener, or a distributed cache) and expected to propose a solution. The focus is on your understanding of scalability, reliability, performance, and trade-offs. You'll need to discuss various components, data storage, APIs, and potential bottlenecks.
**Interviewers look for:** Ability to break down complex problems into smaller components.; Knowledge of various system design approaches.; Consideration of factors like availability, latency, and consistency.; Clear communication of design choices and justifications.
**Evaluation criteria:** System design principles; Scalability and performance considerations; Trade-off analysis; Understanding of distributed systems; Database design
**Common rejection reasons:** Inability to design scalable and robust systems.; Lack of understanding of distributed systems concepts.; Poor trade-off analysis.
## Questions

- Design a system like Twitter's news feed.
- How would you design a rate limiter?
- Design an API for a ride-sharing service.

## Preparation tips

- Study common system design patterns and architectures.
- Understand concepts like load balancing, caching, databases (SQL vs. NoSQL), message queues, and APIs.
- Practice designing systems for scale.
- Be prepared to justify your design decisions and discuss alternatives.

## Round 3: Behavioral and Managerial Round
**Type:** Behavioral Interview · **Difficulty:** Medium · **Duration:** 45 min
Assess teamwork, problem-solving in team settings, and cultural fit.
This round focuses on your behavioral aspects and how you fit within the team and company culture. You'll be asked questions about your past experiences, focusing on how you've handled specific situations related to teamwork, challenges, successes, and failures. The interviewer aims to understand your work style, motivation, and how you collaborate with others.
**Interviewers look for:** Evidence of teamwork and collaboration.; How candidates handle challenges and conflicts.; Self-awareness and ability to learn from mistakes.; Alignment with Commvault's values and work environment.
**Evaluation criteria:** Teamwork and collaboration; Problem-solving approach in team settings; Adaptability and learning agility; Motivation and career goals; Cultural fit
**Common rejection reasons:** Poor communication or interpersonal skills.; Lack of enthusiasm or interest in the role/company.; Inability to provide specific examples of past behavior.; Mismatch in cultural values.
## Questions

- Tell me about a time you had to work with a difficult colleague. How did you handle it?
- Describe a project where you faced a significant technical challenge. How did you overcome it?
- What are your long-term career goals?
- Why are you interested in Commvault?

## Preparation tips

- Prepare examples using the STAR method (Situation, Task, Action, Result) for common behavioral questions.
- Reflect on your strengths, weaknesses, and career aspirations.
- Research Commvault's company culture and values.
- Be ready to discuss why you are interested in this specific role and company.