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Interview Process   |   Interview Puzzles / Aptitude
Organization : Zillow
Position : Software Engineer

Zillow Interview Process

I applied at Zillow for the post of Software Engineer through an employee referral. My interview process at Zillow had four rounds - two telephonic interviews, one coding test and one on site interview. The interview process took more than a month.

Round 1 - Telephonic Screening
I received a call from a technical recruiter after I applied for the post. This screening lasted for only fifteen minutes and it was all about the basic things. He asked me about me and my strong areas. He asked me why I was interested in joining Zillow and all. In my opinion, it was just to ensure the authenticity of the candidate.

Round 2 - Coding Test
After the telephonic call, I received an email from them about a coding test. This test was conducted through email and I had two hours to complete the test. I won't say that the test was easy as it depends from person to person and the amount of efforts one has put in preparation. Some of the questions given to me in this coding test:
Q1. WAP to convert string to Long.
Q2. WAP to insert a node in a trinary tree.

Round 3 - Telephonic Interview
After I successfully completed my coding test, I was scheduled for the telephonic interview with a developer. The interview took place after about a week. There were many questions asked and the interview lasted for about 45 minutes. Some of the topics on which questions were asked:
Q1. Java garbage collector algorithm.
Q2. Difference between process and thread.
Q3. Abstract class vs. interfaces.
Q4. Hash vs. bst.
Q5. WAP to find the first unique character in a string.
Other than all these, there were some behavior based questions as well. I was also asked why I wanted to join Zillow and other questions like these.

Round 4 - On-Site Interview
Finally, I was called for an on-site interview. This was a loop interview which lasted for about four hours. The interviewers kept changing and returning. Many questions were asked and it all began with questions on the basic concepts but soon lifted up for more complex questions and coding problems. I got stuck with an SQL design question but I was helped by the interviewer and was able to give a solution for the problem then.
Q1. You are given a file which contains all possible numbers on a 32-bit architecture. Now, 4 numbers are missing from that file. Find the 4 missing numbers.

How to crack (get into) Zillow Interview

The interview process at Zillow is highly professional. Though about a month was burned for that, it was totally worth it. Except the first telephonic screening by the recruiter, none of the round was about just completing formality. Thus, you need to prepare really hard if you dream of working in the company.

The coding test is moderately difficult but that is the first step in the ladder and thus you must at any cost prepare really well for that. I believe that you need not be perfect in the personal interviews but you must be perfect with coding tests. That is your base and that will generate the impression on your interviewers.

After that, you will face a telephonic interview. That interview is a long one and there will be a lot of questions asking you to differentiate between this and that. So be clear with the terms. You can Google such questions and prepare. A few coding problems will also be asked. Don't panic if you don't know it but instead try to find a way and if you are on a right track, you will be helped by the interviewer for sure.

The technical on-site interview is really long and that is where, more than anything, you will need your patience and your confidence level. There will be 4-5 interviewers in total however you might only begin with 1 or two. Mostly, the questions will be basic in nature but then you will be given a few coding problems again. Use the same approach again.

The people at Zillow are highly professional and you will love being interviewed. If you get an offer, accept it even if you are not allowed to negotiate. The company is really good with such a talented employees. All the best for your interviews.

Thanks Anmol for sharing the details of your interview.
Send more details and your personal experiences info@gpuzzles.com
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Difficult Brain Twister

A strange tradition is followed in an orthodox and undeveloped village. The chief of the village collects taxes from all the males of the village yearly. But it is the method of taking taxes that is interesting.

The taxes paid in the form of grains and every male should pay equal pounds corresponding to his age. In simpler terms, a man aged 10 years will have to pay 10 pounds of grains and a 20 years old will be paying 20 pounds of grain.

The chief stands on a riser containing 7 different weights next to a large 2 pan scale. As per the interesting custom, the chief can only weigh using three of the seven weights.

In such a scenario, can you calculate what must be the weights of the seven weights each and who is the oldest man the chief can measure using those weights?

  • Views : 90k+
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Famous Probability Puzzle

This is a famous probability puzzle in which you have to choose the correct answer at random from the four options below.
Can you tell us whats the probability of choosing correct answer in this random manner.

1) 1/4
2) 1/2
3) 1
4) 1/4

  • Views : 50k+
  • Sol Viewed : 20k+

Logic Fruits Riddle

There is a box full of fruits,
all but two are grapes,
all but two are apples,
and all but two are oranges.

How many fruits are in the box ?

  • Views : 60k+
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IAS Interview Problem

I need to divide numbers from 1 to 9 into two group such that sum of numbers in one group is equal to the sum of other group.
Note : 6 cannot be flipped over to make it 9.

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Lateral Thinking Problem

Suppose there is a Christmas tree and four angels are sitting on it amidst the other ornaments. Two of them have black halos and two of them have white halos. No body among them can see above their head. Angel A is sitting on the top branch and can see angels B and C sitting below him. B can see C who is sitting in a branch lower than his. Angel D is at the base of the tree and can't be seen due to the branches in between. Also, he can't see anybody as well.

If they are asked to guess the color of their own halo (they dont know that), who do you think will be able to deduce and speak up first with a right answer?

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Crossing The River In Minimum Time Puzzle

Four people need to cross a dark river at night.

* They have only one torch and the river is too risky to cross without the torch.
* If all people cross simultaneously then torch light wont be sufficient.
* Speed of each person of crossing the river is different.cross time for each person is 1 min, 2 minutes, 7 minutes and 10 minutes.

What is the shortest time needed for all four of them to cross the river ?

By Admin
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Spot The Difference Christmas Tree Riddle

Can you spot 5 differences in two Christmas tree below?

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  • Sol Viewed : 20k+

Infoedge Interview Aptitude Problem

On a magical-intellectual land of gpuzzles , all the animal are rational(real smart).

There are six leopards and one sheep.
Leopard can eat sheep but since as the land is magical, the leopards who eats the sheep , turns into sheep and then can be eaten by the remaining leopard(s).

If we leave them for some time then how many sheep and leopard will be there , when we come back ?

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  • Sol Viewed : 10k+

Famous Lion Tamer Interesting Puzzle

You are trapped with a lion in a cage with 1 unit as its radius. Both you and the lion can run effortlessly at the speed of one unit.

1) The lion is quite hungry and all he wants is to catch you and eat you up. Will he be able to do that?
2) If yes, how long do you have till he does that?

  • Views : 70k+
  • Sol Viewed : 20k+

Tricky Math Race Riddle

Rooney, Hernandez, and Robin race each other in a 100 meters race. All of them run at a constant speed throughout the race.

Rooney beats Hernandez by 20 meters.
Hernandez beats Robin by 20 meters.

How many meters does Rooney beat Robin by ?

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