Coding fluency
Implement an LRU cache. Explain your data structures, test capacity one, and walk through an eviction.
What a strong answer demonstrates
Correctness, edge cases, and time / space complexity.
Prepare for Grammarly with a focused mix of coding, design, and communication. Start with your job description and confirm the interview loop with your recruiter.
6 Practice picks
3 Interview reports
5 Levels mapped
01 / MAKE YOUR NEXT SESSION COUNT
Your preparation, made concrete.
System design
Design a notification service. Clarify delivery guarantees, model the data, then handle retries and duplicate events.
What a strong answer demonstrates
Clear requirements, a working baseline, and explicit trade-offs.
Behavioral storytelling
Describe a technical decision you changed after receiving feedback. Explain your contribution and the outcome.
What a strong answer demonstrates
Specific actions, honest reflection, and measurable impact.
BEFORE YOU PRACTICE
Ask your recruiter.
Get the details that a generic company guide cannot know.
- Which team and level is this opening for, and what does success look like?
- What rounds, durations, and evaluation criteria should I prepare for?
- Which languages, tools, and AI assistance are permitted?
- Will design focus on frontend, backend, infrastructure, or another specialty?
- Are there accommodations or preparation materials I should request?
Grammarly practice problems
Company-linked challenges and related lessons from our library. Not a prediction of your interview.
Challenge
Difficulty 7/10
Two Sum from BST
Challenge
Difficulty 4/10
Detect Substring in String
Challenge
Difficulty 8/10
Course Prerequisites
Challenge
Difficulty 4/10
Find the Intersection of Two Linked Lists
Challenge
Difficulty 8/10
How Many Strongly Connected
Challenge
Difficulty 4/10
Sum All Primes
Real interview experiences
3 reports from candidates who interviewed at Grammarly.
What people at Grammarly say
Reviews originally posted on Glassdoor.
Awesome culture with an amazing product that is growing super fast. The company is scaling but not slowing down on how much we release.
Breadth of interesting problems/topics from distributed systems, nlp, functional programming, machine learning, deep neural networks
Amazing team culture across the company in all offices! Ownership mindset, grit, and commitment make it easy and enjoyable to work in a distributed team.
The company really appreciates individuals and interactions, understands that the team in the main value, and prefer data-driven decision making against disputes.
Grammarly is an amazing company to work for. The values they hold aren't just a poster on the wall, but they are actually embodied by the employees.