Tech Architect Interview Questions and Answers in 2025 (100+ Q&A)

Algorithm Tech Architect

Ques:- A frog has to cross a river. There are n rocks in the river, using which the frog can leap across the river. On its way across the river the frog can chose to skip a rock, but it cannot skip two consecutive rocks because that would be two far a di…

Asked In :-

Algorithm Tech Architect

Ques:- Given a series A,B,C …….Z, AA, AB,AC,AD….AZ,BA,BB…BZ,CA….(Open excel sheet. The names of column represent the series). Given input as number 'n'. Output the 'n' th string of the series. & also vice versa if given string prints its co…

Asked In :-

Data Structure Tech Architect

Ques:- You are given 2 arrays of size 'n' each. You need to stable-merge these arrays such that in the new array sum of product of consecutive elements is maximized. eg A= { 2, 1, 3} B= { 3, 7, 9} Stable merging A and B will give …

Asked In :- AnAr Solutions, wikipedia, vertex solutions,

Data Structure Tech Architect

Ques:- Find a number from the array, which on sutracting with the given number gives minimum value ex: array= 2,5,6,8,9 gn number = 1 it should print 2 coz 1 – 2 = -1

Asked In :-

Data Structure Tech Architect

Ques:- You are given an array of integers, say array1 of size n. You have to create another array (say array2) and fill its contents by following this rule: array2[i] will hold the value of the left-most integer from the range array1[i+1] to array1[n-1] …

Asked In :-

Data Structure Tech Architect

Ques:- Given a source array of integers with possible duplicates and a target integer, write algorithm to find out 2 numbers in source array whose sum is equal to target integer.

Asked In :- Infometry, statistics south africa, fivetran,

Algorithm Tech Architect

Ques:- Design OOP constructs for the following functinoarlity. There are multiple types of phones (android, iphone etc). Each phone has a subset of features (voice, text, etc). How would you write the classes and inheritance esp. in C++?

Asked In :-

Data Structure Tech Architect

Ques:- Implement a superqueue DATA STRUCTURE …like a queue with normal queue operations AND finding the maximum value in a constant amount of timeO(1)

Asked In :- SignOff Semiconductors, hyperscience,

Data Structure Tech Architect

Ques:- Find out missing no. from a stack if two given stacks have same numbers

Asked In :- Beacon Platform, qBotica,

Data Structure Tech Architect

Ques:- In a given array of elements like [a1, a2, a3, a4, ….. an, b1, b2, b3, b4, ……. bn, c1, c2, c3, c4, …….. cn]

Asked In :- CodeQuotient, osisoft,

Algorithm Tech Architect

Ques:- Given a dictionary of millions of words, write a program to find the largest possible rectangle of letters such that every row forms a word (reading left to right) and every column forms a word (reading top to bottom).

Asked In :-

Algorithm Tech Architect

Ques:- Give an O(n log n)-time algorithm to find the longest monotonically increasing subsequence of a sequence of n numbers((Hint: Observe that the last element of a candidate subsequence of length i is at least as large as the last element of a candid…

Asked In :-

Algorithm Tech Architect

Ques:- Let f(n, k) be the # of ways of choosing k integers without replacement from n consecutive integers so that no two selected are consecutive. a. give a recurrence for f(n, k) b. efficient implementation of f(n, k)

Asked In :- smsc,

Algorithm Tech Architect

Ques:- Describe recursive mergesort and its run-time. Write an iterative version in C++/Java/Python.

Asked In :-

Data Structure Tech Architect

Ques:- Given 3 arrays x[],y[],z[] all sotted

Asked In :- Octopus, Deep Compute,

Data Structure Tech Architect

Ques:- Write a program to add two long positive numbers (each represented by linked lists)

Asked In :- Estuate,

Data Structure Tech Architect

Ques:- Write a graph class and interface for the graph in C++

Asked In :- XT Global, wikipedia,

Data Structure Tech Architect

Ques:- You are given an array that contains integers. The integers content is such that every integer occurs 3 times in that array leaving one integer that appears only once. Fastest way to find that single integer — using memory. — not usi…

Asked In :-

Algorithm Tech Architect

Ques:- How to count number of unique music titles downloaded from a log file which contains an entry of all music title downloaded?

Asked In :- secure meters,

Algorithm Tech Architect

Ques:- Given an unsorted array of integers containing both negative and positive number, find all the pairs that sum to a given value say 'total'.

Asked In :- US Defense Intelligence Agency,

The Tech Architect section on takluu.com is dedicated to professionals aiming to lead the design and implementation of complex software systems. A Tech Architect plays a pivotal role in bridging business needs with technology solutions, ensuring that applications are scalable, maintainable, and aligned with organizational goals.

This category covers critical areas including system design principles, software architecture patterns (like microservices, SOA, MVC), cloud architecture, security best practices, API design, and performance optimization. You will also explore architecture documentation, stakeholder communication, and technology evaluation techniques.

Our content provides deep insights into both theoretical concepts and practical challenges faced by tech architects in real projects. Interview questions focus on problem-solving skills, architectural trade-offs, decision-making under constraints, and aligning technology stacks with business requirements.

Whether you’re preparing for roles like Technical Architect, Solution Architect, Enterprise Architect, or Lead Developer, this section equips you with the knowledge to explain complex designs clearly, defend your architectural choices, and demonstrate leadership in technology planning.

At Takluu, we combine detailed explanations with scenario-based questions and case studies to ensure you are ready for both technical and behavioral rounds in tech architect interviews. Our goal is to empower you to design robust solutions and take ownership of technology roadmaps confidently.

Prepare with us and take the next step in your career to become a successful Tech Architect who drives innovation and delivers impactful technology strategies.

Questions in: Tech Architect

What makes Takluu valuable for interview preparation?

Get Our Mobile App

Programming

Reasoning

Network & Telecom

Management

What makes Takluu valuable for interview preparation?