Grammarly

Software Engineer

Software EngineerL4Medium to Hard

The Grammarly Software Engineer L4 interview process is designed to assess a candidate's technical proficiency, problem-solving abilities, and cultural fit within the company. It typically involves multiple rounds, including technical screenings, coding challenges, system design discussions, and behavioral interviews.

Rounds

4

Timeline

~14 days

Experience

3 - 7 yrs

Salary Range

US$120000 - US$160000

Total Duration

210 min

Overall Evaluation Criteria

Technical Skills

Problem-solving skills
Algorithmic thinking
Data structure knowledge
Code quality and efficiency
System design capabilities
Communication skills
Collaboration and teamwork
Cultural fit and alignment with Grammarly's values

Communication

Ability to articulate thought process
Clarity of explanations
Active listening
Ability to ask clarifying questions

Behavioral and Cultural Fit

Past experiences and achievements
Learning agility
Adaptability
Proactiveness
Ownership and accountability

Preparation Tips

1Review fundamental data structures (arrays, linked lists, trees, graphs, hash maps) and algorithms (sorting, searching, dynamic programming, graph traversal).
2Practice coding problems on platforms like LeetCode, HackerRank, or Coderbyte, focusing on medium to hard difficulty.
3Study system design concepts, including scalability, availability, databases, caching, load balancing, and API design.
4Prepare for behavioral questions by recalling specific examples from your past experiences using the STAR method (Situation, Task, Action, Result).
5Understand Grammarly's mission, values, and products to demonstrate genuine interest and cultural alignment.
6Practice explaining your solutions and thought processes clearly and concisely.
7Research common interview questions for Software Engineer roles at similar tech companies.

Study Plan

1

Data Structures and Algorithms

Weeks 1-2: Data Structures & Algorithms fundamentals. Solve 5-10 problems per topic.

Weeks 1-2: Focus on core data structures and algorithms. Cover arrays, linked lists, stacks, queues, trees (binary trees, BSTs, AVL trees), heaps, hash tables, and graphs. Practice algorithms like sorting (quicksort, mergesort), searching (binary search), recursion, dynamic programming, and graph traversal (BFS, DFS). Aim to solve at least 5-10 problems per data structure/algorithm type.

2

System Design

Weeks 3-4: System Design concepts. Practice designing scalable systems.

Weeks 3-4: Dive into system design. Study concepts like distributed systems, microservices, databases (SQL vs. NoSQL), caching strategies, load balancing, message queues, and API design. Practice designing common systems like URL shorteners, social media feeds, or chat applications. Understand trade-offs and scalability considerations.

3

Behavioral and Situational Questions

Week 5: Behavioral questions preparation. Use STAR method.

Week 5: Prepare for behavioral and situational questions. Reflect on your past projects and experiences. Identify examples that demonstrate leadership, teamwork, problem-solving, handling conflict, and learning from mistakes. Practice articulating these experiences using the STAR method.

4

Mock Interviews and Review

Week 6: Mock interviews and review weak areas.

Week 6: Mock interviews and review. Conduct mock interviews with peers or mentors to simulate the interview environment. Focus on receiving feedback on your technical explanations, problem-solving approach, and communication. Review any weak areas identified during practice.

Commonly Asked Questions

Given an array of integers, find the contiguous subarray with the largest sum.
Design a system to recommend articles to users based on their reading history.
Explain the concept of Big O notation and its importance.
Describe a situation where you had to disagree with a team member or manager. How did you handle it?
How would you optimize a slow-performing database query?
Implement a function to reverse a linked list.
What are the advantages and disadvantages of using microservices?
Tell me about a time you had to learn a new technology quickly.
Design a rate limiter for an API.
What is a deadlock and how can it be prevented?

Location-Based Differences

San Francisco

Interview Focus

Emphasis on practical application of data structures and algorithms.Assessment of system design skills for scalable applications.Evaluation of communication and collaboration abilities.Understanding of core computer science principles.

Common Questions

How would you design a URL shortener service?

Discuss a time you had to deal with a difficult stakeholder.

Explain the difference between SQL and NoSQL databases.

Describe a challenging technical problem you solved and how you approached it.

Tips

Be prepared to whiteboard solutions for coding problems.
Practice explaining your thought process clearly.
Research Grammarly's products and values.
Prepare specific examples for behavioral questions using the STAR method.

Kyiv

Interview Focus

Strong focus on distributed systems and scalability.Evaluation of problem-solving in a collaborative environment.Assessment of adaptability and learning agility.Understanding of software development best practices.

Common Questions

Design an API for a real-time chat application.

Tell me about a project you are particularly proud of.

How do you handle code reviews?

What are your thoughts on microservices architecture?

Tips

Be ready to discuss trade-offs in system design choices.
Highlight your contributions and impact in past projects.
Showcase your ability to learn and adapt to new technologies.
Ask insightful questions about the team and the role.

Remote

Interview Focus

Deep dive into algorithmic complexity and optimization.Assessment of architectural design patterns.Evaluation of debugging and troubleshooting skills.Understanding of software development lifecycle.

Common Questions

How would you design a system to handle millions of concurrent users?

Describe a time you failed and what you learned from it.

What are the principles of object-oriented programming?

How do you ensure code quality?

Tips

Practice coding problems with a focus on efficiency.
Be prepared to discuss trade-offs in different architectural approaches.
Demonstrate a proactive approach to problem-solving.
Showcase your understanding of testing methodologies.

Process Timeline

1
Recruiter Screen45m
2
Technical Coding Interview60m
3
System Design Interview60m
4
Behavioral and Cultural Fit Interview45m

Interview Rounds

4-step process with detailed breakdown for each round

1

Recruiter Screen

Initial screening to assess basic qualifications and cultural fit.

Recruiter ScreenMedium
45 minRecruiter or Hiring Manager

This initial screening call is conducted by a recruiter or hiring manager to assess your overall fit for the role and Grammarly. They will discuss your resume, career goals, and motivation for applying. They will also ask some high-level behavioral and technical questions to gauge your experience and communication skills.

What Interviewers Look For

Logical thinkingAbility to translate requirements into codeUnderstanding of basic algorithms and data structuresClear communication of approach

Evaluation Criteria

Problem-solving approach
Correctness of code
Efficiency of solution (time and space complexity)
Coding style and readability
Communication of thought process

Questions Asked

Tell me about yourself and your background.

Behavioral

Why are you interested in Grammarly?

BehavioralMotivation

What are your strengths and weaknesses?

Behavioral

Describe a challenging project you worked on.

BehavioralTechnical

Preparation Tips

1Be ready to talk about your resume and career aspirations.
2Research Grammarly's mission and values.
3Prepare a concise summary of your key skills and experiences.
4Think about why you are interested in this specific role at Grammarly.

Common Reasons for Rejection

Inability to articulate thought process.
Poor understanding of fundamental data structures and algorithms.
Inefficient or incorrect code solutions.
Lack of clarity in communication.
2

Technical Coding Interview

Assess core coding skills with data structures and algorithms problems.

Technical Phone Screen / Coding InterviewHard
60 minSoftware Engineer

This round focuses on your core technical 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 understand the problem, devise an efficient solution, implement it correctly, and explain your thought process and the complexity of your solution.

What Interviewers Look For

Strong grasp of fundamental algorithms and data structures.Ability to write clean, efficient, and bug-free code.Logical approach to problem-solving.Clear explanation of the solution and its complexity.

Evaluation Criteria

Problem-solving skills
Data structure and algorithm knowledge
Code implementation quality
Efficiency of the solution
Ability to handle edge cases

Questions Asked

Given a binary tree, find its inorder traversal.

Data StructuresTreesRecursion

Find the kth largest element in an unsorted array.

AlgorithmsSortingHeaps

Implement a function to check if a string is a palindrome.

StringsTwo Pointers

Given two sorted arrays, merge them into a single sorted array.

ArraysTwo PointersSorting

Preparation Tips

1Practice coding problems on platforms like LeetCode, focusing on medium to hard difficulty.
2Be prepared to write code in a shared editor or on a whiteboard.
3Think out loud and explain your approach before coding.
4Consider edge cases and test your solution thoroughly.
5Understand the time and space complexity of your algorithms.

Common Reasons for Rejection

Inability to solve coding problems efficiently.
Poor understanding of time and space complexity.
Difficulty in explaining the solution.
Not considering edge cases.
3

System Design Interview

Assess ability to design scalable and robust software systems.

System Design InterviewHard
60 minSenior Software Engineer or Engineering Manager

This round evaluates your ability to design and architect software systems. You will be presented with a high-level problem (e.g., design a URL shortener, a social media feed, or a chat application) and expected to discuss various aspects of the design, including data models, APIs, scalability, reliability, and potential bottlenecks. You'll need to justify your design choices and discuss trade-offs.

What Interviewers Look For

Ability to design complex systems from scratch.Understanding of distributed systems, databases, caching, and load balancing.Sound reasoning for design choices and trade-offs.Clear and structured communication of the design.

Evaluation Criteria

System design principles
Scalability and performance considerations
Trade-off analysis
Database design
API design
Clarity of explanation

Questions Asked

Design a URL shortening service like bit.ly.

System DesignScalabilityDatabases

Design a news feed system for a social media platform.

System DesignDistributed SystemsCaching

Design a system to handle real-time notifications.

System DesignWebSocketsScalability

Design an API for a ride-sharing service.

System DesignAPI DesignDatabases

Preparation Tips

1Study common system design patterns and concepts.
2Practice designing various systems, focusing on scalability and availability.
3Be prepared to discuss databases, caching, load balancing, and message queues.
4Clearly articulate your design choices and the reasoning behind them.
5Consider different approaches and their trade-offs.

Common Reasons for Rejection

Inability to design scalable and robust systems.
Lack of understanding of distributed system concepts.
Poor trade-off analysis.
Difficulty in communicating design choices.
4

Behavioral and Cultural Fit Interview

Assess behavioral competencies, teamwork, and cultural fit.

Behavioral InterviewMedium
45 minEngineering Manager or Senior Team Member

This interview focuses on your behavioral competencies and how you work within a team. You'll be asked questions about your past experiences, focusing on situations that demonstrate your collaboration skills, problem-solving approach in a team context, leadership potential, and how you handle challenges. The goal is to understand if you'll be a good cultural fit for Grammarly.

What Interviewers Look For

Evidence of collaboration and teamwork.Ability to handle conflict and difficult situations constructively.Proactiveness and ownership.Alignment with Grammarly's culture and values.Growth mindset.

Evaluation Criteria

Teamwork and collaboration
Communication skills
Problem-solving approach in team settings
Adaptability and learning agility
Cultural fit with Grammarly's values

Questions Asked

Describe a time you had a conflict with a colleague and how you resolved it.

BehavioralTeamworkConflict Resolution

Tell me about a time you failed. What did you learn?

BehavioralLearningResilience

How do you prioritize your work when you have multiple competing deadlines?

BehavioralTime ManagementPrioritization

Describe a situation where you had to influence others. What was the outcome?

BehavioralInfluenceCommunication

Preparation Tips

1Prepare specific examples using the STAR method for common behavioral questions.
2Reflect on your experiences with teamwork, conflict resolution, and leadership.
3Understand Grammarly's core values and how your experiences align with them.
4Be ready to discuss your career goals and how this role fits into them.

Common Reasons for Rejection

Lack of alignment with company values.
Poor communication or interpersonal skills.
Inability to provide specific examples for behavioral questions.
Lack of enthusiasm or engagement.

Commonly Asked DSA Questions

Frequently asked coding questions at Grammarly

View all
Generate ParenthesesMEDIUMSearch in Rotated Sorted ArrayMEDIUMTrapping Rain WaterHARDMerge IntervalsMEDIUMUnique PathsMEDIUMSqrt(x)EASYClimbing StairsEASYWord SearchMEDIUMClone GraphMEDIUMWord BreakMEDIUM