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Interview Process   |   Interview Puzzles / Aptitude
Organization : Hitachi Data Systems
Position : Senior Software Engineer

Hitachi Data Systems Interview Process

I applied at Hitachi Data Systems for the post of Senior Software Engineer through an employee referral. The hiring process at Hitachi Data Systems included two telephonic interviews and five on site interviews.

Round 1 - Two Telephonic Interviews
I had two phone screenings or interviews. The first interview was based on the storage concept, types of storage, management of storage, protocols including iSCSI and Fiber Channel, LUN masking and unmasking. The questions asked were good and moderately difficult. Usually, you expect and easy phone screening but it was not.

The second interview was dedicated towards the understanding of architecture and distributed system. It also included the concept of making the stack scalable. Again, the screening was more difficult than expected. You should be a good one to be selected for the on-site interviews. They are only looking for professionals. If you are not able to perform, you will be rejected straightaway without being called for the personal interviews.

Round 2 - Five Onsite Interviews
I don't have much to write about them separately and so I decided to collaborate all the things and tell you about them together. First of all, not all of these interviews are technical. You will face all sort of things from technical to human resources based to behavioral questions. I will list a few questions for you:
Q1. Implement a bipartite graph in C++.
Q2. How will you convince a small business customer to be on a private cloud if he is having 100 percent security and multitenancy while working on a public cloud?
Q3. What problems did you face in the xyz project that you did in your previous company?

Other than that, there were many technical questions based on the language you prefer. Even codes were given to write. The process was long and tiring for me. But the people are quite professional and are looking for another one. If they like you, you will get an offer soon. Also, you can negotiate the offer but I think they will offer you pretty much what you must have expected or even more and thus there will be no need to negotiate.

CHow to crack (get into) Hitachi Interview

Like I have told you above as well, they want only professional people in their company. So first of all, don't behave or answer in an amateur way. Be confident of the things you speak. If you are not confident with your answer, try the nearest approach. Avoid sitting blankly or blabbering anything irrespective of the question asked.

Other than that, if you are applying for the senior position, you must be very clear of all the required fundamentals and concepts. Also, be prepared to answer the questions based on your projects that you did back in your previous company. They will want to know what you're good at and what your weak points are.

So, prepare well and attempt with full confidence and you will definitely crack the Hitachi Data Systems Interview.

Thanks Neelam for sharing the details of your interview.
Send more details and your personal experiences info@gpuzzles.com
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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 ?

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Classic Lateral Thinking Problem

There are two glasses in front of you. One of the glasses is full of coke and the other glass is full of lemonade. You take a spoonful of coke and mix it into the glass of lemonade. Now the lemonade glass has a mixture of coke and lemonade. You take a spoonful of that mixture and mix it inside the coke glass.

Now what do you think? - The glass with coke has more quantity of lemonade or the glass with lemonade have more quantity of coke mixed with it?

By Admin
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Interesting Bet Puzzle

In a bowl, there are several chits with distinct numbers on them. You have to choose any two of them at random.

Will you accept the 2 to 1 bet that the numbers will be relatively prime will you accept it?

For instance:
If the numbers you pick are 6 and 13, you lose $1.
If the numbers you pick are 5 and 25, you win $2.

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Induction Brain Teasers

Three college toppers are summoned by the inspecting faculty. To identify the best from them, the faculty takes them into a room and places one hat on each of their heads. Now all of them can see the hats on other’s heads but can’t see his own. There are two colored hats – green and red.

Now the faculty announces that he had made sure that the competition is extremely fair to all three of them. He also gives them a hint that at least one of them is wearing a red hat. Now the first one who is able to deduce his own hat color will be awarded the most intelligent student of all award. After a few minutes, one of them raises his hand and is able to deduce the color correctly.


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Logic Birthday Puzzle

For my anniversary, I decided to surprise my wife. Since she is a voracious reader, I decided to collect a lot of books for her. On the first day of the month, I bought one book, on the second, I bought two and on the third, I bought three. This process went on till the anniversary and on the day, I had 276 books with me to gift her.

Can you calculate, on which day is our anniversary?

By Admin
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Spatial Trivia Physics Puzzle

As shown in picture, there are four gears with the following specification
* Gear A has 60 teeth
* Gear B has 40 teeth
* Gear C has 20 teeth
* Gear D has 60 teeth
* Every minute, Gear B makes 15 complete turns.

What is the relative speed of Gear A and Gear B?

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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.

By Admin
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No Death Penalty For Kill Riddle

Ramsay was killed by Sansa in front of everyone but the judge was not sure how to punish Sansa. Why is the judge confused?

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Weight Balance Riddle

You can place weights on both side of weighing balance and you need to measure all weights between 1 and 1000. For example if you have weights 1 and 3,now you can measure 1,3 and 4 like earlier case, and also you can measure 2,by placing 3 on one side and 1 on the side which contain the substance to be weighed. So question again is how many minimum weights and of what denominations you need to measure all weights from 1kg to 1000kg.

By Admin
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Measure Water Supply Brain Teaser

You had an infinite supply of water and a 5 ml and 3 ml gallons.

How would you measure exactly 4 ml in least number of steps ?

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