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Updated Mar 21, 2012 – Interview questions and reviews posted anonymously by interview candidates.

Difficulty Rating [?] Based on 7 ratings

3.1

“Average” Interview

Interview Experience [?] Based on 7 ratings

Positive	57%
Neutral	43%
Negative	0%

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3.0

Average Interview

Overall Positive Experience

Received and Declined Offer

Interviewed Jun 2011 (took a day)

The recruiter contacted me in advance. On the scheduled day, an Engineer called me. He first asked some basic concept questions about C/C++. Then asked how to find out the how many different numbers are in an unsorted array. After that he asked me something about networking—sliding window in TCP. Finally, he asked me something about testing.

Interview Questions

find out the how many different numbers are occurred in an unsorted array

Answer Question

Other Details

I Applied Online and the interview consisted of a Phone Interview.

Helpful Interview?

Yes | No

Inappropriate?

3.0

Average Interview

Overall Positive Experience

Received and Accepted Offer

Interviewed May 2010 in Shanghai (China) (took 2 days)

they asked several algorithm question on word segment, searching in big file, and KV system design.

Interview Questions

design an kv system for 100TB storage and 100M access/day?

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how to select the intersection of two huge text file, one line for one item.

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Other Details

I got the interview through an Employee Referral and the interview consisted of a 1:1 Interview, an IQ/Intelligence Test and a Skills Test.

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Helpful Interview?

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Inappropriate?

3.0

Average Interview

Overall Neutral Experience

Received and Accepted Offer

Interviewed Sep 2011 in Beijing, Beijing (China) (took 2 days)

a nice HR directly talk to me , about my intern experience and professional skills,then ask me about some questions,that is easy and relaxable.the second interview is to meet the HRD,talks much more about my life experience and personalities,felt a little stressful and nervous,but still ok.

Interview Questions

show me some work skills

Answer Question

Other Details

I applied In-Person and the interview consisted of a 1:1 Interview.

Helpful Interview?

Yes | No

Inappropriate?

5.0

Very Difficult Interview

Overall Positive Experience

Interviewed and No Offer

Interviewed May 2011 in Beijing, Beijing (China) (took a day)

First I applied for a test engineer position online, after several days, the recruiter called me to ask me whether I would change my position to search engineer for business search department (the core department of Baidu.com, most deal with algorithm and other challenge works). Then, about two or three days later, they arranged a on site interview for me.
While the on-site interview, the interviewer is good (but do not smile at all : -)). He asked me some questions about Java multi-thread problems, DB questions, and some basic algorithm programming questions (write a method to convert a string); final question is about big data problem, the main idea of the question is to search some information through about 10G user action log file.

Interview Questions

Describe the difference between HashMap and HashTable

View Answers (1)

What is index, and describe the benefit of index; MySQL only has prefix index, so how to build a suffix index for MySQL

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Write a method to convert a given string to opposite order, for example, given "abc", then output should be "cba"

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Given a 10G user action log file, and each each in the log is userID-actionID format, also give you a PC with 4G memory, find a way to search for those userIDs that has at least three action records.

View Answers (1)

Other Details

I Applied Online and the interview consisted of a 1:1 Interview.

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Helpful Interview?

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Inappropriate?

3.0

Average Interview

Overall Neutral Experience

Interviewed and No Offer

Interviewed Feb 2011 (took a day)

Questions:
1. Explain static and dynamic variables, functions and how to use them?
2. What is the virtual memory?
3. How to use rand function in C to generate a normal distribution?
4. Do you know Linux kernel?
5. Explain some of your projects and research.

Interview Questions

Could you explain more about the Radial Basis Function? Have you done anything to improve the ANN?

Answer Question

Other Details

The interview consisted of a Phone Interview and a 1:1 Interview.

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Helpful Interview?

Yes | No

Inappropriate?

3.0

Average Interview

Overall Neutral Experience

Interviewed and No Offer

Interviewed Feb 2010 in Beijing, Beijing (China) (took 4+ weeks)

The interviewer asked me about how to find the big/little endian of your system.

Interview Questions

Two sorted array, find their intersection, write exact code

Answer Question

Other Details

I got the interview through an Employee Referral and the interview consisted of a Phone Interview, a 1:1 Interview, an IQ/Intelligence Test and a Personality Test.

More Baidu.com Software Engineer Interviews

Helpful Interview?

Yes | No

Inappropriate?

2.0

Easy Interview

Overall Positive Experience

Received and Accepted Offer

Interviewed Jul 2009 in Beijing, Beijing (China) (took a day)

There are four interviews in an afternoon. The first interview asks me some simple technique questions. Very easy. Then the second interviewers ask several pobabilistic problems. One question is estimating the running time of shuffling an array. Then the last interviewer just talks with me about my research experiences. Finally I got the offer at last.