Open Financial Technologies Private Limited SDE (Software Development Engineer) Interview Questions and Answers

Q1. It was an MCQ Round and the questions were a mixture of CS fundamentals topics.
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This round contained 2 coding questions.

Q1. This was a one on one coding round where I was asked 3 questions that were of Easy to Medium level of LeetCode.
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Q1. HR round was more of a technical interview round where I was asked about my android projects and some core android topics since both me and my interviewer were Android Developers.
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3 coding question 1 SQL query

Q1. Question about tree check tree is bst or not ?write code on it
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Q2. Array question find 1st repeated element in o(n).
Ans. 
Find the first repeated element in an array of strings in O(n) time complexity.
• Create a hash table to store the frequency of each element.

• Traverse the array and check if the element is already present in the hash table.

• If it is present, return the element as the first repeated element.

• If no element is repeated, return null or -1.

• Example: ['apple', 'banana', 'orange', 'apple'] => 'apple'
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Q1. Multiple of big integers and find complexity
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Question about finding complexity of multiplying big integers.
• Big integers require more memory and processing power than regular integers.

• Multiplying two n-digit integers takes O(n^2) time using the standard algorithm.

• There are faster algorithms like Karatsuba and FFT which have lower complexity.

• The complexity of multiplying two n-digit integers using Karatsuba algorithm is O(n^log2(3)).

• The complexity of multiplying tw...read more
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Q1. Where do you see yourself in 5 years?
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Q2. What are your strengths and weaknesses?
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Q3. Tell me about yourself.
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Q1. Data Structure and algorithm
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Q2. System design question
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Q1. Describe projects
Ans. 
I have worked on various projects including developing web applications, creating mobile apps, and implementing machine learning algorithms.
• Developed a web application for a retail company to manage inventory and sales data

• Created a mobile app for a fitness tracking platform to track user's exercise routines

• Implemented machine learning algorithms for a recommendation system in an e-commerce website
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Q2. Knowledge testing on ML frameworks
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Had a overall personality, technical & problem solving test with AVP

Q1. One leetcode easy-medium problem
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Q2. Java, springboot and oops question
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Q1. Project related questions
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Q2. System design questions
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Normal DSA round from hacker rank

DSA round from hacker rank or leetcode

Q1. With hiring manager
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MVVM was asked and swift questions

Q1. Mostly around resume
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Q1. Resume walkthrough and a coding question(leetcode easy)
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Q1. Cultural Fitment round
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