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 Opendoor 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
2 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?
Opendoor practice problems
Company-linked challenges and related lessons from our library. Not a prediction of your interview.
Challenge
Difficulty 4/10
Detect Substring in String
Challenge
Difficulty 6/10
Length of String Compression
Challenge
Difficulty 4/10
Delete Nodes From A Linked List
Challenge
Difficulty 6/10
Two Stack Queue
Challenge
Difficulty 6/10
Counting Univalued Subtrees
Challenge
Difficulty 5/10
Is A Subsequence
Real interview experiences
2 reports from candidates who interviewed at Opendoor.
What people at Opendoor say
Reviews originally posted on Glassdoor.
Working for a company that does something good for society. You'll learn a lot. Exciting and fast paced environment. You get to work with a lot of smart people
I get to work on a product that I think is actually really great with people I enjoy. The benefits are solid. Company culture is something that is being worked toward in genuine ways rather than typical startup "here's a ping-pong table" band-aids. I feel comfortable speaking up when I see issues and listened to when I do so.
Hard work is rewarded. I got several raises, bonuses, and promotions in my first two years at Opendoor. I just received a $7000 bonus for working hard during COVID-19.
Interesting domain. Lots of interesting challenges. They're just disrupting the tip of the iceberg. Financial potential is huge.
Strong leadership team, customer-focused, ambitious. SF office is very nice and in good location. High quality people, healthy corporate culture, performance oriented.