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 Glassdoor 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
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?
Glassdoor practice problems
Company-linked challenges and related lessons from our library. Not a prediction of your interview.
Challenge
Difficulty 5/10
Zeros to the End
Challenge
Difficulty 6/10
Implement a Binary Search Tree
Challenge
Difficulty 7/10
Matrix Operations
Challenge
Difficulty 5/10
K Largest Elements From List
Challenge
Difficulty 7/10
Longest Palindromic Substring
Challenge
Difficulty 6/10
Next Greater Element in a Circular Array
What people at Glassdoor say
Reviews originally posted on Glassdoor.
Glassdoor's culture is very collaborative with great people. There's a high level of autonomy and trust to make an impact. Love my coworkers and miss being in the office together!
Glassdoor is the favorite company I've worked for so far in my career. First and foremost, the company has an amazing company culture. People are really good to one another here. While people are smart and driven, they also care about making sure that everyone works together well.
Great culture and benefits. Product is pretty easy to learn. Plenty of resources to help you be successful. Company did take care of employees with severance when company did major layoffs.
The pay has also been pretty solid this fiscal year as well. Since we were projecting very low performance initially (due to changes in books, partnerships, and products), it’s been great for people to overachieve.
Glassdoor is very transparent. The leadership is so encouraging and they really listen whenever you have concerns. The benefits and salary are the best I've had in 10+ career since college. I'm so lucky to work here.
Inside the workplace
About Glassdoor
A day at Glassdoor