Tekion Corp Interview Experience for SDE | On-Campus 2021

Tekion arrived for hiring in the last week of July 2021 in our campus for the SDE role (INTERNSHIP + FTE). We had a total of 4 rounds ( 1 Online Coding on HackerEarth  + 2 Technical Interviews+ 1 HR Interview). 

Here is my interview experience for the same.

Round 1 ( Online Coding Round) :

• This round was conducted on the HackerEarth platform, There were 18 MCQs and 2 coding questions of easy/medium difficulty and the time allotted was 75 Mins.
• The MCQs predominantly contained output finding questions where the code was in Java. Apart from this, the MCQs had questions from DBMS and algorithm analysis. There was 1 easy aptitude question as well.

Suggestions for MCQs :

• Have a sound knowledge of OOPS, OS, DBMS, and Basics of Java.
• Practice some Input-Output and OOPs-based, problems on C++ and Java.

Coding Questions :

• Function f(x) is defined as the smallest fibonacci number greater than or equal to x. The task is to calculate g(l,r) where g(l,r) is defined as g(l,r) = f(l)+f(l+1)+f(l+2)+…..+f(r).  Constraint: 1<=l<=r<=10^9.
• Given N coins and an array of costs that represents the cost of each digit (1,2,…9), where costs[i] is the cost of picking the digit i. The task is to find the largest number that can be represented by using the N coins.

Round 2 (Technical Interview 1):

• The Interviewer started by asking Theory from OS, DBMS, OOPS, and CN.  This went on for around 20 mins.
• In DBMS he asked, Normalization and its types, Transactions, etc.

In OS he asked,

• Difference between process and thread.
• Scheduling Algorithms.
• Deadlocks.
• Semaphore and Mutex.
• Static and Dynamic Binding
• Page fault and Demand Paging.

In OOPs, he asked

• Important features of OOps.
• Diamond Problem in Multiple Inheritance.
• Virtual Keyword.

In DBMS, he asked

• Normalization and its types.
• Transactions.
• ACID properties of DBMS.

In CN, he asked :

• Difference between TCP and UDP.
• OSI Model.

After this he asked 2 Coding Problems,

•  Given an Array Find Maximum Sum subarray in it.
•  Given a BST, find the kth smallest Element in O(logn).
• I was able to give the proper logic and explain my approach to him and he was satisfied with my Solution.
• After this, he asked if I had any questions for him.
• This round lasted for about 70 Mins.

Round 3 (Technical Interview 2): The interviewer started off with, 2 Coding Questions :

•  Given a sorted rotated array and a target, find if the target is present in the array in O(logN).
• Given a BST, convert it into a Sorted Doubly Linked List and return the pointer to the head of the Doubly Linked List.
• I was able to explain the logic to the Interviewer for both the problems and then I was asked to code the solution for both the problems, which I did as well.

After verifying the code, he asked some questions from the OS, DBMS, OOPS, and CN,

• Difference between Unique key and Primary key.
• Indexing and its use in DBMS.
• Difference between Locks and Semaphore.
• Paging and Segmentation.
• Deadlock and its conditions.
• What are TCP and UDP used for?
• Why do we use Object-Oriented Programming?
• After this, he asked if I had any questions for him.
• This round lasted for about 70 Mins.
• The round went well and I was confident that I would get a mail for the next round.
• The mail for the final HR round came 4 hours later.

Round 4 (HR Interview):

• I had never been given an HR round before, so I was a little nervous.
• The interviewer greeted me and asked me how was my day.
• It was more like a discussion rather than an Interview.
• He started with the standard question, Tell me about yourself.
• I had already prepared answers for 2-3 types of HR round introduction and Behavioral questions. So I was able to give him a short, precise, and to-the-point Introduction of mine.
• Then he moved on to the Projects I had done in my B.Tech.
• I told about 2-3 Projects which I did until now and briefly explained about all of them.
• Then he asked me if I had any questions for him.
• I asked few questions, and he was happy to answer.
• This HR Round went on for around 15-20 Mins.
• Next Day, Result was declared and I was selected.

My suggestion for the Interviews :

• Practice all the Standard Company problems from GfG.
• Have a good understanding of the CS Fundamentals in OS, DBMS, CN, and OOPS.
• Prepare some short notes on CS fundamentals and DSA Problems, which will be useful for last-minute revision.

Prepare and notes down answers to some Standard HR round questions :

• Tell me about Yourself.
• What are your Strengths and Weaknesses?
• Tell me about a hard situation for you, and how did you overcome it.
• Tell me about a time when you took a risk and failed.
• Why should we hire you?
• At last, always keep calm while giving the Interviews for positive results.
• All the best for your Interviews.

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