# Software Engineer
**Role:** Software Engineer · **Level:** Software Engineer II
**Company:** [Avalara](https://scaleengineer.com/companies/avalara)
**Difficulty:** Medium to Hard
**Salary:** US$110000 - US$140000
**Experience:** 2 - 5
**Timeline:** ~14 days
The Software Engineer II interview process at Avalara is designed to assess a candidate's technical proficiency, problem-solving abilities, and cultural fit within the company. It typically involves multiple rounds, starting with an HR screening, followed by technical interviews focusing on data structures, algorithms, and system design, and concluding with a managerial interview to evaluate leadership potential and team collaboration skills.
Canonical: https://scaleengineer.com/interviews/avalara/software-engineer-ii-software-engineer
---
## Overall evaluation

- Technical Proficiency
- Communication and Collaboration
- Cultural Fit and Motivation

## Questions asked

- Write a function to find the kth largest element in an unsorted array.
- Design a system to handle real-time notifications for a social media platform.
- Tell me about a time you disagreed with a technical decision and how you handled it.
- How would you optimize a slow database query?
- Explain the difference between a process and a thread.
- Describe your experience with cloud platforms like AWS or Azure.
- How do you stay updated with new technologies and industry trends?
- What are your strengths and weaknesses as a software engineer?
- Design an API for a simple e-commerce product catalog.

## Preparation tips

### lists

- Review fundamental data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal).
- Practice coding problems on platforms like LeetCode, HackerRank, or AlgoExpert, focusing on medium to hard difficulty.
- Study system design principles, including scalability, reliability, availability, and common architectural patterns (e.g., microservices, load balancing, caching).
- Prepare for behavioral questions by using the STAR method (Situation, Task, Action, Result) to structure your answers.
- Research Avalara's business, products, and recent news to understand its market position and challenges.
- Prepare thoughtful questions to ask the interviewers about the role, team, and company culture.

### studyPlan

- {"title":"Data Structures Fundamentals","longDescription":"Weeks 1-2: Focus on core data structures (arrays, linked lists, stacks, queues, trees, graphs, hash tables) and their common operations. Practice implementing these structures and solving problems related to them. Cover basic algorithms like sorting (quicksort, mergesort), searching (binary search), and recursion.","shortDescription":"Weeks 1-2: Data Structures & Basic Algorithms. Practice implementations and problem-solving."}
- {"title":"Algorithmic Problem Solving","longDescription":"Weeks 3-4: Dive deeper into algorithms, including dynamic programming, graph algorithms (BFS, DFS, Dijkstra's), and string manipulation. Work on problems that require optimizing time and space complexity. Start exploring common system design concepts like API design, database choices, and caching strategies.","shortDescription":"Weeks 3-4: Advanced Algorithms & Intro to System Design. Focus on optimization and basic design patterns."}
- {"title":"System Design and Behavioral Preparation","longDescription":"Weeks 5-6: Concentrate on system design. Study topics such as distributed systems, microservices architecture, load balancing, message queues, database scaling, and CAP theorem. Practice designing scalable systems for common applications (e.g., URL shortener, social media feed). Simultaneously, prepare for behavioral questions using the STAR method, reflecting on past experiences.","shortDescription":"Weeks 5-6: System Design & Behavioral Prep. Practice designing systems and structuring behavioral answers."}
- {"title":"Mock Interviews and Final Review","longDescription":"Week 7: Mock interviews, both technical and behavioral. Refine answers, identify weak areas, and practice articulating your thought process clearly. Review company-specific information and prepare insightful questions for the interviewers.","shortDescription":"Week 7: Mock Interviews & Final Review. Practice and refine answers."}

## Location differences

- {"location":"Seattle, WA","differences":{"tips":["Be prepared to discuss specific projects and your contributions in detail.","Familiarize yourself with Avalara's core products and services.","Highlight any experience with distributed systems and microservices architecture."],"interviewFocus":["Emphasis on practical application of data structures and algorithms.","Understanding of cloud-native technologies (AWS, Azure, GCP).","Experience with Agile methodologies and CI/CD pipelines."],"commonQuestions":["Describe a challenging technical problem you solved at your previous role.","How do you approach designing a scalable system for a growing user base?","Tell me about a time you had to work with a difficult team member."]}}
- {"location":"Remote","differences":{"tips":["Showcase your ability to collaborate effectively in a remote or hybrid work environment.","Be ready to discuss your preferred programming languages and frameworks.","Demonstrate a proactive approach to learning and problem-solving."],"interviewFocus":["Strong understanding of object-oriented programming principles.","Experience with database design and optimization.","Ability to articulate technical concepts clearly and concisely."],"commonQuestions":["How do you ensure code quality and maintainability?","What are your thoughts on test-driven development (TDD)?","Describe a situation where you had to adapt to a significant change in project requirements."]}}

## Round 1: Recruiter Screen
**Type:** HR Screening · **Difficulty:** Medium · **Duration:** 45 min
Initial screening to assess basic qualifications and cultural fit.
This initial screening call with a recruiter aims to understand your background, career aspirations, and basic qualifications for the role. They will also provide an overview of Avalara and the interview process. Be prepared to discuss your resume and why you are interested in this specific position.
**Interviewers look for:** Candidate's ability to translate a problem into code.; Understanding of time and space complexity.; Basic coding proficiency.
**Evaluation criteria:** Understanding of basic data structures (arrays, linked lists, hash maps).; Ability to write clean, functional code.; Problem-solving approach.
**Common rejection reasons:** Poor communication of thought process.; Inability to solve basic coding problems.; Lack of understanding of fundamental data structures and algorithms.
## Questions

- Tell me about yourself.
- Why are you interested in Avalara?
- What are your salary expectations?
- What are your strengths and weaknesses?
- Describe your experience with [specific technology mentioned on resume].

## Preparation tips

- Be ready to summarize your resume and highlight relevant experience.
- Clearly articulate why you are interested in Avalara and the Software Engineer II role.
- Prepare questions about the company culture, team structure, and the role's responsibilities.

## Round 2: Coding Challenge
**Type:** Technical Interview (Data Structures & Algorithms) · **Difficulty:** Hard · **Duration:** 60 min
Assess coding skills with data structures and algorithms problems.
This technical interview focuses on your ability to solve coding challenges. You will be asked to write code, typically in a shared editor, to solve problems related to data structures and algorithms. The interviewer will assess your problem-solving approach, coding style, and understanding of complexity.
**Interviewers look for:** Candidate's approach to solving algorithmic problems.; Code quality, readability, and maintainability.; Ability to identify and handle edge cases.; Clear communication of the solution and its trade-offs.
**Evaluation criteria:** Proficiency in data structures and algorithms.; Ability to write efficient and correct code.; Problem-solving skills.; Understanding of time and space complexity (Big O notation).
**Common rejection reasons:** Inability to solve coding problems efficiently.; Poorly optimized solutions.; Difficulty explaining the thought process.; Lack of understanding of edge cases.
## Questions

- Given a binary tree, invert the tree.
- Find the first non-repeating character in a string.
- Implement a function to check if a linked list has a cycle.
- Given two sorted arrays, merge them into a single sorted array.
- Find the median of two sorted arrays.

## Preparation tips

- Practice coding problems on platforms like LeetCode, HackerRank, focusing on medium to hard difficulty.
- Be prepared to explain your thought process step-by-step.
- Write clean, well-commented code.
- Consider and discuss time and space complexity for your solutions.
- Practice thinking out loud.

## Round 3: System Design Interview
**Type:** Technical Interview (System Design) · **Difficulty:** Hard · **Duration:** 60 min
Assess ability to design scalable and robust software systems.
This round evaluates your ability to design scalable and robust software systems. You'll be presented with a high-level problem (e.g., design Twitter's news feed, design a URL shortener) and expected to discuss various aspects of the system, including data storage, APIs, scalability, and potential bottlenecks.
**Interviewers look for:** Candidate's ability to break down a large problem into smaller components.; Knowledge of common architectural patterns.; Understanding of how different system components interact.; Ability to justify design choices and discuss trade-offs.
**Evaluation criteria:** System design principles (scalability, reliability, availability).; Ability to design complex systems.; Trade-off analysis.; Understanding of databases, caching, load balancing, and APIs.
**Common rejection reasons:** Lack of understanding of system design principles.; Inability to design scalable and reliable systems.; Poor trade-off analysis.; Difficulty communicating complex design decisions.
## Questions

- Design a URL shortening service like bit.ly.
- Design the Twitter feed.
- How would you design a rate limiter?
- Design a system to count unique visitors to a website.
- Design an API for a ride-sharing service.

## Preparation tips

- Study system design concepts: load balancing, caching, databases (SQL vs. NoSQL), message queues, CDNs.
- Practice designing common systems like social media feeds, ride-sharing apps, or e-commerce platforms.
- Be prepared to discuss trade-offs between different design choices.
- Think about scalability, availability, and fault tolerance.
- Draw diagrams to illustrate your design.

## Round 4: Hiring Manager Interview
**Type:** Managerial Interview · **Difficulty:** Medium · **Duration:** 45 min
Assess behavioral fit, teamwork, and career aspirations.
This interview with the hiring manager focuses on your behavioral aspects, leadership potential, and how you would fit into the team and company culture. Expect questions about your past experiences, how you handle challenges, your career goals, and your understanding of teamwork and collaboration.
**Interviewers look for:** Candidate's ability to work effectively in a team.; How they handle conflict and feedback.; Their understanding of software development best practices.; Their potential to grow and contribute to the team's success.; Alignment with company values.
**Evaluation criteria:** Teamwork and collaboration skills.; Problem-solving approach in a team context.; Communication and interpersonal skills.; Motivation and career aspirations.; Cultural alignment with Avalara's values.
**Common rejection reasons:** Poor cultural fit.; Lack of alignment with team values.; Inability to articulate career goals.; Negative attitude towards past experiences.; Lack of enthusiasm for the role or company.
## Questions

- Tell me about a time you had a conflict with a team member and how you resolved it.
- Describe a project you are particularly proud of and your role in it.
- How do you handle constructive criticism?
- Where do you see yourself in 5 years?
- How do you prioritize your work when faced with multiple tasks?

## Preparation tips

- Prepare examples using the STAR method for common behavioral questions (teamwork, conflict resolution, leadership, failure).
- Research Avalara's company values and be ready to discuss how you align with them.
- Think about your career goals and how this role fits into them.
- Be enthusiastic and demonstrate a positive attitude.
- Prepare thoughtful questions for the hiring manager.