Grammarly

Software Engineer

Software EngineerL3Medium

The Grammarly Software Engineer L3 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, starting with an HR screening, followed by technical interviews focusing on data structures, algorithms, and system design, and concluding with a behavioral and managerial interview.

Rounds

4

Timeline

~7 days

Experience

1 - 3 yrs

Salary Range

US$90000 - US$120000

Total Duration

180 min

Overall Evaluation Criteria

Technical Skills

Problem-solving skills
Algorithmic thinking
Data structure knowledge
Coding proficiency
System design capabilities
Communication skills
Teamwork and collaboration
Cultural alignment with Grammarly's values

Communication and Collaboration

Ability to articulate technical concepts clearly
Active listening skills
Constructive feedback delivery and reception
Enthusiasm and passion for technology

Cultural Fit

Alignment with Grammarly's mission and values
Proactiveness and ownership
Adaptability and learning agility
Resilience and ability to handle feedback

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-difficulty problems.
3Understand core computer science concepts such as time and space complexity (Big O notation).
4Study system design principles, including scalability, reliability, and availability. Familiarize yourself with common design patterns.
5Prepare to discuss your past projects and experiences in detail, highlighting your contributions and learnings.
6Research Grammarly's products, mission, and values to understand how your skills and aspirations align.
7Practice behavioral questions using the STAR method (Situation, Task, Action, Result).
8Prepare thoughtful questions to ask the interviewer about the role, team, and company culture.

Study Plan

1

Data Structures and Algorithms

Weeks 1-2: DSA fundamentals and practice (LeetCode Easy/Medium).

Weeks 1-2: Focus on Data Structures and Algorithms. Cover arrays, linked lists, stacks, queues, trees (binary trees, BSTs, AVL trees), heaps, hash tables, graphs. Implement common algorithms like sorting (quicksort, mergesort), searching (binary search), graph traversal (BFS, DFS), dynamic programming, and greedy algorithms. Practice problems on LeetCode (Easy/Medium).

2

System Design

Weeks 3-4: System Design principles and common problems.

Weeks 3-4: Dive into System Design. Understand concepts like load balancing, caching, database design (SQL vs. NoSQL), message queues, API design, microservices architecture, and distributed systems. Study common system design problems like designing a URL shortener, a Twitter feed, or a chat application. Read relevant articles and case studies.

3

Behavioral and Cultural Fit

Week 5: Behavioral questions and STAR method practice.

Week 5: Behavioral and Behavioral Questions. Prepare to discuss your past experiences using the STAR method. Focus on examples that demonstrate teamwork, problem-solving, leadership, handling conflict, and learning from mistakes. Align your answers with Grammarly's core values.

4

Mock Interviews and Final Preparation

Week 6: Mock interviews and final review.

Week 6: Mock Interviews and Review. Conduct mock interviews with peers or mentors to simulate the actual interview environment. Review your weak areas identified during practice. Prepare questions to ask the interviewers.

Commonly Asked Questions

Write a function to reverse a linked list.
Given an array of integers, find the contiguous subarray with the largest sum.
Design a system to handle real-time analytics for a website.
How would you optimize a slow database query?
Tell me about a time you had to deal with ambiguity in a project.
What are your strengths and weaknesses?
Why are you interested in Grammarly?

Location-Based Differences

Remote

Interview Focus

Adaptability to remote collaboration tools and practices.Communication skills in a distributed environment.Understanding of asynchronous communication patterns.

Common Questions

How would you design a URL shortener?

Explain the difference between a process and a thread.

Describe a challenging technical problem you solved.

Tell me about a time you disagreed with a teammate.

Tips

Ensure a stable internet connection and a quiet environment.
Be prepared to share your screen and use virtual whiteboarding tools.
Clearly articulate your thought process and solutions verbally.

San Francisco

Interview Focus

Understanding of local market technical trends and talent pool.Familiarity with local engineering practices and methodologies.Cultural nuances and team dynamics specific to the region.

Common Questions

How would you design a system to handle real-time notifications?

What are the trade-offs between SQL and NoSQL databases?

Describe your experience with cloud platforms (AWS, Azure, GCP).

How do you approach debugging complex issues?

Tips

Research common technical challenges and solutions prevalent in the local tech industry.
Be prepared to discuss your experience with technologies popular in the region.
Understand Grammarly's presence and impact in the local market.

Process Timeline

0
HR Screening30m
1
Data Structures and Algorithms45m
2
System Design60m
3
Behavioral Interview45m

Interview Rounds

4-step process with detailed breakdown for each round

0

HR Screening

Initial screening by HR to assess fit and expectations.

HR ScreeningEasy
30 minHR Recruiter / Hiring Manager

This initial screening is conducted by HR to understand your background, career goals, and motivation for applying to Grammarly. They will also discuss salary expectations and logistics. It's an opportunity for you to learn more about the company culture and the role.

What Interviewers Look For

Genuine interest in Grammarly and the role.Clear communication of career aspirations.Professionalism and positive attitude.Good questions about the company and team.

Evaluation Criteria

Candidate's motivation and interest
Alignment of expectations (role, salary, culture)
Overall fit with the team and company

Questions Asked

Why are you interested in this role at Grammarly?

BehavioralMotivation

What are your salary expectations?

LogisticsCompensation

Preparation Tips

1Research Grammarly's mission, values, and products.
2Be prepared to discuss your resume and career aspirations.
3Have a clear understanding of your salary expectations.
4Prepare questions to ask the recruiter.

Common Reasons for Rejection

Lack of enthusiasm for the role or company.
Unrealistic salary expectations.
Poor fit with the team's working style.
Failure to ask relevant questions.
1

Data Structures and Algorithms

Coding challenge focused on data structures and algorithms.

Technical Interview (Coding)Medium
45 minSoftware Engineer

This round focuses on assessing your core programming skills. You will be asked to solve coding problems that typically involve data structures and algorithms. The interviewer will evaluate your ability to understand the problem, devise a solution, write clean and efficient code, and analyze its time and space complexity. Expect to use a shared coding environment.

What Interviewers Look For

Logical thinkingAbility to translate requirements into codeClean and efficient codeUnderstanding of Big O notation

Evaluation Criteria

Problem-solving approach
Correctness of the solution
Code quality and efficiency
Understanding of time and space complexity

Questions Asked

Given a binary tree, find its inorder traversal.

Data StructuresTreesRecursion

Implement a function to find the kth smallest element in an unsorted array.

AlgorithmsSortingQuickselect

Preparation Tips

1Practice coding problems on platforms like LeetCode.
2Be prepared to explain your thought process step-by-step.
3Write clean, well-commented code.
4Test your code with edge cases.

Common Reasons for Rejection

Inability to articulate thought process clearly.
Lack of fundamental data structures and algorithms knowledge.
Poor coding practices (e.g., unreadable code, no error handling).
2

System Design

System design problem to assess architectural skills.

Technical Interview (System Design)Medium
60 minSenior Software Engineer / Engineering Manager

This round evaluates 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) and expected to discuss various aspects of the system, including data storage, APIs, scalability, and potential bottlenecks. Focus on explaining your design choices and the trade-offs involved.

What Interviewers Look For

Ability to design complex systemsUnderstanding of distributed systems conceptsPragmatic decision-makingClear communication of design

Evaluation Criteria

System design approach
Scalability and performance considerations
Reliability and fault tolerance
Choice of technologies and trade-offs

Questions Asked

Design a system like TinyURL.

System DesignScalabilityDatabases

How would you design a rate limiter?

System DesignAPIsConcurrency

Preparation Tips

1Study common system design patterns and concepts.
2Practice designing systems for scalability and reliability.
3Be prepared to discuss trade-offs between different approaches.
4Think about potential failure points and how to mitigate them.

Common Reasons for Rejection

Inability to design scalable and reliable systems.
Lack of understanding of trade-offs in system design.
Poor communication of design choices.
3

Behavioral Interview

Behavioral questions to assess past experiences and cultural fit.

Behavioral InterviewMedium
45 minHiring Manager / Senior Team Member

This interview focuses on your past experiences and how you've handled various situations. You'll be asked behavioral questions designed to understand your work style, problem-solving approach, teamwork abilities, and how you align with Grammarly's values. Use the STAR method (Situation, Task, Action, Result) to structure your answers.

What Interviewers Look For

Evidence of past behavior that predicts future performance.Self-awareness and ability to reflect on experiences.Strong communication and interpersonal skills.Cultural alignment

Evaluation Criteria

Behavioral competencies
Teamwork and collaboration skills
Problem-solving approach in past situations
Alignment with Grammarly's culture and values

Questions Asked

Tell me about a time you faced a significant challenge at work and how you overcame it.

BehavioralProblem SolvingResilience

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

BehavioralTeamworkConflict Resolution

Preparation Tips

1Prepare examples using the STAR method for common behavioral questions.
2Reflect on your strengths, weaknesses, and career goals.
3Understand Grammarly's core values and how you embody them.
4Be honest and authentic in your responses.

Common Reasons for Rejection

Poor communication skills.
Lack of self-awareness.
Inability to provide specific examples of past behavior.
Not aligning with company values.

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