Alteryx Sdet Engineer Interview Questions and Answers

Round: Test
Experience: Round 1: Online objective test.
There were questions from Operating Systems, C, Algorithms, Data Structures.

Round 2: Online and subjective (choose language C++ or JAVA). This round had 15 questions.
Data structures, C++ questions, Fibonacci optimisation, algorithms (DFS/BFS).

Round: Technical Interview
Experience: In the first round of interview they asked me questions about :1) My project (asked no. of classes and mention their responsibilities).
2) ACID properties of database and indexing in a database.

There were also questions related to OOPS concepts including polymorphism, composition, aggregation, inheritance, Abstract classes, interface; difference between usage of abstract class and interface, can abstract class be instantiated, how to access child class methods having reference of base class.
There was another question on run time and compile time binding and under which category do we classify method overloading and also questions on code for deleting the duplicate nodes in a sorted link list and printing root to leaf paths in a binary search tree.

Round: Technical Interview
Experience: This was the second round of the interview. They asked me the following questions,There is a tree (not binary) and all non-leaf nodes are RED in colour. Some leaf nodes are white in colour. If a node has all white coloured children then its colour can be changed into white. So we have to convert maximum number of nodes into white colour – write program for the same.
Code for checking whether a given binary tree balanced or not.
What are virtual functions, what is their role?
Questions related to virtual functions.

You are given the details of each transaction of each item i.e. item_name, quantity, price. So at the end of the day, you want top 50 items that have been sold. There are two cases:
In the first case you have fixed number of items.
In the second case very large number of items – so you need to decide what data structure to be used for this.

Round: Technical Interview
Experience: In the third round of the interview they asked questions like :
1) Types of tree traversals (breadth first and depth first (pre, post, in)
2) Determining width of binary tree i.e. using breadth wise traversal
3) Why files are preferred over databases?

College Name: IIT KANPUR

Round: Test
Experience: 55 questions in 60 minutes of which 45 were technical and 10 were aptitude questions and there was no negative marking. The technical questions covered RDBMS, UNIX, C, C++, Java, Operating systems, Data structures and Algorithms. The questions were simple and the basics of each of the mentioned subjects were mainly asked.
Duration: 60 minutes
Total Questions: 55

Round: Test
Experience: Again mainly questions on the subjects covered in round 1 but bit more in deep questions required short but detailed answers.
Tips: Learn to write pretty good Unix Scripts and Know the Basics of Operating System & OOP
Duration: 40 minutes
Total Questions: 10

Round: Technical Interview
Experience: Questions mainly on UNIX & RDBMS. Interviewer will ask you to write UNIX scripts and SQL/JAVA-SQL queries/programs for some use cases.
Tips: Know how JOINS, INTERSECTION, UNION & Aggregation works in SQL.

Round: Technical Interview
Experience: Questions on Programming, Data Structure and algorithms.
You will be asked to write pseudo-program for some of the use cases.
Tips: Choose your programming language cleverly. ;)

Round: Other Interview
Experience: Round 5 is an interview with Technical Manager.
Questions are asked based on the content of your resume like projects, hobbies and traits.
Few puzzle questions are asked which usually can be answered with logical analysis.
Tips: Be prepared for questions on the answer you give for the previous question(s).

Round: HR Interview
Experience: Again question will be asked on the basis of your resume. Questions may also asked on your previous interview experience if you have any.
Tips: Clear your doubts before leaving the room.

General Tips: Be confident, be straight forward, do not try to bluff with answers and try to be creative with answers. Prepare well both technical and aptitude.
Skills: Algorithms And Data Structures, Operating Systems, Unix, SQL, Java Programming, Object-Oriented Programming (OOP), C Programming
College Name: JSS Mahavidyapeetha Sri Jayachamarajendra College Of Engineering, Mysore
Motivation: Work Environment of Informatica.

Round: Resume Shortlist
Experience: I had sent my resume to the hiring group, Selection through telephonic interviews. I was interviewed by three different research groups  (once by each).
Tips: Factors in decreasing order of importance: CGPA each stage. Ability to explain your projects precisely. Ability to solve ''standard" logarithmic problems.  The way you think and put down your Answer is the most important. The final answer .s not so I important, and they prod you when you think out aloud anyway.

Round: Technical Interview
Experience: Almost- by default they ask about your previous projects/internships if they are relevant to the group. Ofher questions depend on the group you are interviewed by and your own profile, In my case it was machine learning, text mining etc. I was told about the research problem they were dealing with then and asked f or comments/suggestions/.inputs and a discussion followed.
Tips: Basically these are specialized Interviews so it's good to have sound knowledge of your domain (analytical and application skills are very much required).

Skill Tips: CGPA>9.0, 1f not (like me) relevant work done in the domain and in past internship.A recommendation from the professor is also a good add on.
College Name: IIT Madras

Round: Test
Experience: There was an apititude test basically in line with CAT pattern. It was conducted online for about 45 min duration. The questions were rather simple but each question was time bound (around 45 sec or so).
Tips: As such I did not have any structured study plan. I did refresh some of my basics in mechanics and analysis. I was more inclined to get a job in aerospace division. Read as per your interest.
Duration: 45 minutes

Round: Group Discussion
Experience: Initially, we are seated randomly in a circular manner and each one was given two minutes to describe the topic. It was followed by an tense debate where participants converged and diverged on different sets of issue. They were particularly looking for interpersonal skills and out of the box thinking.

Round: Interview
Experience: The interview was purely management type.More questions were thrown at team building, bio-data, why this company? , project, what you Can contribute for the firm?, where you see yourself in next 5 -10 years, ambitions, some amount of optimization tools and techniques, concluding remarks....Interpersonal skills and clarity in answering where mainly
IBM was a more relaxed interview, which basically dealt with management and interpersonal skills. Questions like “if one of our team mate is very stubborn, lazy, adamant, how will you tackle the situation” were asked.
Tips: College (B Tech) curricular activities, NTSC certificate, Math Olympiad certificate, all India quiz competition awards were noted and appreciated. That really was a booster. That helps in implanting an idea that you are not just blah blah blah.

Skill Tips: Be very sure about your mechanics, analysis and design. These three are the fundamentals.
I haven prepared for placements exclusively. Here were combined discussions. However, it really helps if you can revise and make your fundamentals were clear. The basic understanding should be there. An hour every day for two months will do the trick.
Be really choosy of the company you want to be in. Learn a lot more of the company and get an idea of what they are actually looking for. But still don’t freeze your mind to those realms alone.. Be open minded and cheerful. The first few questions will set the mood of the interview. If you are bale to crack that, then things will be really smooth. Really concentrate on your fundamentals, especially analysis and design.
Skills: Mechanics, Analysis , Design
College Name: IIT-Madras

Round: Resume Shortlist
Experience: CGPA > 8 is necessary

Round: Test
Experience: Online Test + Written Test
Online Test - Duration 90 minutes + Written Test 30 minutes for Hardware profile
Online Test -Quants, Number Series ; Calculators were not allowed
Written Test - Semiconductor Basics

Round: Interview
Experience: Interview is held in either 1 round for non-core profile or several rounds of technical interviews for Hardware.
Technical round consisted of questions form topics like VLSI, Semiconductors (BJT, MOS), ASIC Design Flow, CMOS Process Flow.

Round: Group Discussion
Experience: Group Discussion is held for non-core profilesDuration varies from 20-30 minutes with 11 members.

General Tips: Never ever mention GRE or MS or any higher studies, for that matter, in any placement interview if you want to get placed in that company
Practicing quant, puzzle solving and GD from early in the semester would definitely help
Core placement: be thorough with the core fundaes
Practice general quant questions without a calculator
Skills: Quants, Puzzle Solving
College Name: IIT MADRAS

Round: Test
Experience: It had 3 parts: Data manipulation, number series and calculations.

Round: Test
Experience: Technical test on C. Typical questions on what will be the output of the program.

Round: Technical Interview
Experience: Questions were based on various areas of CSE, especially Programming languages and thesis work. Questions on Database connectivity in Java , CGI, DFA, DMA etc were also asked.
Tips: ISL works 80% in java and 20% in C. Thus, prepare Java well before appearing for the IBM-ISL. Must have basic knowledge in databases, Operating systems.

College Name: IIT KANPUR