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ACI Worldwide Software Engineer Interview Questions and Answers

Updated 2 Feb 2022

ACI Worldwide Software Engineer Interview Experiences

1 interview found

Software Engineer Interview Questions & Answers

user image Praveen Puri

posted on 24 Jan 2022

I applied via Naukri.com and was interviewed in Aug 2021. There were 5 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Basic Java concepts, Opps concepts.
  • Q2. Spring framework, Orm, Design pattern,
  • Q3. Modern forntend technology like Angular Js , React Js, Web services like Rest and Soap
  • Q4. Asking some logical question related to Java and spring

Interview Preparation Tips

Interview preparation tips for other job seekers - interview process will take 2 rounds, technical round and managerial. whole process will take around 7 days to 15 days... HR will inform you quickly, once you get selected.

Software Engineer Jobs at ACI Worldwide

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Interview questions from similar companies

I applied via Referral and was interviewed in Mar 2022. There were 6 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Aptitude Test 

Time and Speed, Percentages, Averages, Ratio and Proportion, Time and Work etc.

Round 3 - Coding Test 

Platform was Mettle Assessment, Topics were Tree and Binary Search

Round 4 - Group Discussion 

Work from office vs Work from Home

Round 5 - Technical 

(3 Questions)

  • Q1. Multi-threading, Communication between thread, dynamic programming, trees, sorting techniques.
  • Q2. What is TCP, UDP, Difference between TCP and UDP, Three way handshaking problem, socket programming, HTTP Protocol.
  • Ans. 

    TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) are protocols used for data transmission over networks.

    • TCP is a connection-oriented protocol that guarantees reliable delivery of data.

    • UDP is a connectionless protocol that does not guarantee reliable delivery of data.

    • The main difference between TCP and UDP is that TCP provides reliable, ordered, and error-checked delivery of data, while UDP does not.

    • ...

  • Answered by AI
  • Q3. Write code to print bottom view of Binary Search Tree
  • Ans. 

    Print the bottom view of a Binary Search Tree.

    • Use a map to store the horizontal distance and the bottom-most node at that distance.

    • Traverse the tree in level order and update the map with each node's horizontal distance and level.

    • Print the nodes in the map in ascending order of their horizontal distance.

  • Answered by AI
Round 6 - HR 

(3 Questions)

  • Q1. Why you want to work from office
  • Ans. 

    I believe working from the office allows for better collaboration and communication with colleagues.

    • Better collaboration and communication with colleagues

    • Opportunity for face-to-face interactions

    • Easier access to resources and equipment

    • Faster problem-solving through immediate discussions

    • Building stronger relationships with team members

  • Answered by AI
  • Q2. Why should we hire you
  • Ans. 

    I have the technical skills, experience, and passion for software engineering that make me a valuable asset to your team.

    • I have a strong background in computer science and software development

    • I have experience working on various software projects and have a proven track record of delivering high-quality code

    • I am a quick learner and can adapt to new technologies and programming languages

    • I am a team player and can effect...

  • Answered by AI
  • Q3. Tell any moment when you felt motivated and depressed at same time. etc
  • Ans. 

    Yes

    • When I received a promotion at work but also had to deal with the loss of a loved one

    • When I achieved a personal goal but also faced criticism from others

    • When I received positive feedback on a project but also experienced imposter syndrome

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Just be confident and honest. Read your resume properly and rock any interview

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed before Apr 2022. There were 4 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Aptitude Test 

1 hr test, simple aptitude questions

Round 3 - Coding Test 

Simple coding questions

Round 4 - Technical 

(3 Questions)

  • Q1. Reverse the string
  • Ans. 

    Reverse a given string

    • Iterate through the string from end to start and append each character to a new string

    • Use built-in functions like reverse() in Python or StringBuilder.reverse() in Java

    • Convert the string to an array, reverse the array, and convert it back to a string

  • Answered by AI
  • Q2. Basic Networking questions
  • Q3. Questions on working of jvm

Skills evaluated in this interview

I applied via Naukri.com and was interviewed in May 2022. There was 1 interview round.

Round 1 - HR 

(1 Question)

  • Q1. Be prepared with your strength and weakness and just be yourself.

Interview Preparation Tips

Interview preparation tips for other job seekers - Be yourself and focus on the basics whatever you have learnt throughout your curriculum.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
No response

I applied via Recruitment Consulltant and was interviewed in Aug 2023. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Aptitude Test 

MCQ questions on Linux Networking and SQL

Round 3 - Technical 

(2 Questions)

  • Q1. Questions about Linux Sql and Networking
  • Q2. Questions about the project
Interview experience
2
Poor
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Job Fair and was interviewed before Aug 2023. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. Two sum of an array
  • Ans. 

    Find two numbers in an array that add up to a specific target value.

    • Use a hashmap to store the difference between the target value and each element in the array.

    • Iterate through the array and check if the current element's complement exists in the hashmap.

    • Return the indices of the two numbers that add up to the target value.

  • Answered by AI
  • Q2. Stack balance parenthesis
Round 2 - Technical 

(2 Questions)

  • Q1. Is circular loop is there in a linkedList
  • Ans. 

    No, a circular loop is not present in a linked list.

    • A linked list does not have a circular loop by default.

    • If a linked list has a circular loop, it is considered a circular linked list.

    • Circular linked lists can be detected using Floyd's Cycle Detection Algorithm.

  • Answered by AI
  • Q2. How to identify the duplicates in circular linkedList
  • Ans. 

    To identify duplicates in a circular linked list, use a hash set to keep track of visited nodes.

    • Traverse the circular linked list while adding each node to a hash set.

    • If a node is already in the hash set, it is a duplicate.

    • Consider edge cases such as an empty list or a list with only one node.

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - well Prepared DSA Topics and Java and OOPs

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Recruitment Consulltant and was interviewed in Dec 2022. There were 4 interview rounds.

Round 1 - Coding Test 

2 questions Based on arrays level of medium

Round 2 - Technical 

(1 Question)

  • Q1. 2 questions based on array and linked list
Round 3 - Technical 

(1 Question)

  • Q1. Question based on metrix
Round 4 - HR 

(1 Question)

  • Q1. Behavioural questions

Interview Preparation Tips

Topics to prepare for ServiceNow Associate Software Engineer interview:
  • Data Structures
  • OOPS
Interview preparation tips for other job seekers - Mostly data structures topics are important so you can practicing data structures questions
Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Group Discussion 

Machine learning advantages and disadvantage
hello world hello OWRLD2

Round 2 - HR 

(2 Questions)

  • Q1. What is u r name
  • Ans. 

    My name is John Doe.

    • Full name is John Doe

    • Common first and last name combination

    • No middle name provided

  • Answered by AI
  • Q2. What is salary expectation?
  • Ans. 

    I am looking for a competitive salary based on my skills, experience, and the industry standard.

    • Research the average salary for Associate Software Engineers in the industry

    • Consider your level of experience and skills when determining your salary expectation

    • Be prepared to negotiate based on the company's offer and benefits package

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - nothing

Interview Questionnaire 

21 Questions

  • Q1. AVL tree balance checking
  • Q2. Median of 2 sorted arrays in O(log N) time complexity and O(1) space complexity
  • Ans. 

    Find median of 2 sorted arrays in O(log N) time complexity and O(1) space complexity

    • Use binary search to find the partition point in both arrays

    • Calculate the median based on the partition point and array sizes

    • Adjust the partition points based on the median value

    • Repeat until the partition points are at the median

    • Handle edge cases such as empty arrays and uneven array sizes

  • Answered by AI
  • Q3. Strings Anagram in O(1) space complexity
  • Ans. 

    Anagram of strings in O(1) space complexity

    • Use a fixed size array of integers to store the frequency of characters in the first string

    • Iterate through the second string and decrement the frequency of each character in the array

    • If all the frequencies are zero, then the strings are anagrams

    • Return true or false accordingly

  • Answered by AI
  • Q4. Level order traversal of a tree using Queue
  • Ans. 

    Level order traversal of a tree using Queue

    • Create a queue and add the root node to it

    • While the queue is not empty, remove the front node and print its value

    • Add the left and right child nodes of the removed node to the queue

    • Repeat until the queue is empty

  • Answered by AI
  • Q5. Reverse level order traversal of a tree using Queue
  • Ans. 

    Reverse level order traversal of a tree using Queue

    • Create a queue and push the root node into it

    • While the queue is not empty, pop the front node and push its children into the queue

    • Add the popped node to a stack

    • Once the queue is empty, pop elements from the stack and print them

  • Answered by AI
  • Q6. BFS and DFS Difference
  • Ans. 

    BFS and DFS are graph traversal algorithms. BFS explores nodes level by level while DFS explores nodes depth by depth.

    • BFS uses a queue while DFS uses a stack or recursion.

    • BFS is optimal for finding shortest path while DFS is optimal for finding a path between two nodes.

    • BFS requires more memory as it stores all the nodes at each level while DFS requires less memory.

    • BFS can be used to find connected components while DFS

  • Answered by AI
  • Q7. OS Concepts – Starvation, Demand Paging, Virtual Memory, Deadlocks
  • Q8. Parenthesis Balance Checking
  • Q9. Three Jars - 1 with apples, 1 with oranges, 1 with apples and oranges. All of them wrongly labelled. Find min no of attempts to find the correct nature of boxes
  • Q10. Find product of each element of an array except that element in O(N) time complexity without using / operation
  • Ans. 

    Find product of each element of an array except that element in O(N) time complexity without using / operation

    • Use prefix and suffix products

    • Multiply prefix and suffix products for each element to get the final product

    • Handle edge cases where array has 0 or 1 element separately

  • Answered by AI
  • Q11. Recursively deleting linked list
  • Ans. 

    Recursively delete a linked list

    • Create a recursive function that takes the head of the linked list as input

    • Base case: if the head is null, return

    • Recursively call the function with the next node as input

    • Delete the current node

  • Answered by AI
  • Q12. Recursively deleting linked list from end
  • Ans. 

    Recursively delete a linked list from the end.

    • Start from the head and recursively traverse to the end of the list.

    • Delete the last node and set the second last node's next pointer to null.

    • Repeat until the entire list is deleted.

    • Use a recursive function to implement the deletion process.

  • Answered by AI
  • Q13. Recursively deleting tree
  • Ans. 

    Recursively delete a tree by deleting all its child nodes and then the parent node.

    • Start from the leaf nodes and delete them first.

    • Then move up to the parent nodes and delete them.

    • Repeat until the root node is deleted.

    • Use post-order traversal to ensure child nodes are deleted before parent nodes.

  • Answered by AI
  • Q14. Recursively deleting from end
  • Ans. 

    Recursively delete elements from the end of an array.

    • Create a recursive function that removes the last element of the array.

    • Call the function recursively until the desired number of elements are removed.

    • Handle edge cases such as empty arrays and removing more elements than the array contains.

  • Answered by AI
  • Q15. Difference between Floyd Warshall and Djikstra
  • Ans. 

    Floyd Warshall finds shortest path between all pairs of vertices while Djikstra finds shortest path from a single source.

    • Floyd Warshall is used for dense graphs while Djikstra is used for sparse graphs.

    • Floyd Warshall has a time complexity of O(n^3) while Djikstra has a time complexity of O((n+m)logn).

    • Floyd Warshall can handle negative edge weights while Djikstra cannot.

    • Floyd Warshall can detect negative cycles while Dj

  • Answered by AI
  • Q16. Shortest path between 2 points in 2-D space in O(log N) time
  • Ans. 

    There is no known algorithm to find shortest path in 2-D space in O(log N) time.

    • The best known algorithm for finding shortest path in 2-D space is Dijkstra's algorithm which has a time complexity of O(N^2).

    • Other algorithms like A* and Bellman-Ford have better time complexity but still not O(log N).

    • If the points are on a grid, Lee algorithm can be used which has a time complexity of O(N).

  • Answered by AI
  • Q17. Design a system for putting newspapers using classes and functions taking different aspects into account
  • Ans. 

    Design a system for putting newspapers using classes and functions

    • Create a Newspaper class with attributes like title, date, and content

    • Create a Publisher class with methods to publish and distribute newspapers

    • Create a Subscriber class with methods to subscribe and receive newspapers

    • Use inheritance to create different types of newspapers like daily, weekly, etc.

    • Implement a database to store newspaper information and ha

  • Answered by AI
  • Q18. SQL commands
  • Q19. Career Prospects - Long Term Plans
  • Q20. Why not higher studies?
  • Ans. 

    I believe practical experience is more valuable than higher studies.

    • I have gained valuable experience through internships and projects.

    • I prefer hands-on learning and problem-solving over theoretical knowledge.

    • I am constantly learning and improving my skills through online courses and workshops.

  • Answered by AI
  • Q21. Machine Learning Concepts - Based on my projects

Interview Preparation Tips

Round: Test
Experience: All Computer Science Topics Covered: Data Structures, Algorithms, Object Oriented Systems, C, C++, Operating Systems, Computer Architectures, Databases, SQL, Basic Quantitative Aptitude
Tips: Solve all of them. Cut off's generally go high.
Duration: 30 minutes
Total Questions: 30

Round: Interview
Experience: Nice Experience. Interviewer was friendly. He wanted exact solutions.
Tips: Be thorough with everything and your projects.

Round: Interview
Experience: Nice Experience. Interviewer was friendly. He wanted exact solutions.
Tips: Be thorough with everything and your projects.

Round: Interview
Experience: Nice Experience. Interviewer was friendly.
Tips: Do not fake yourself.

General Tips: Be thorough with all CS related concepts and projects.
Skill Tips: ""Be thorough.""
Skills: Algorithms, Data Structures, Operating Systems, Machine Learning, SQL, Operating Systems, Computer Architecture, Data Analytics
College Name: IIT Kharagpur
Motivation: Kind of application oriented work and the rising nature of the company. Obviously money also.
Funny Moments: Many funny questions and answers like did you have lunch, when did you last eat, etc

Skills evaluated in this interview

Software Engineer Interview Questions & Answers

Amadeus user image Varun Thopucherla

posted on 11 Mar 2015

Interview Questionnaire 

10 Questions

  • Q1. Tell about yourself?
  • Ans. 

    I am a software engineer with experience in developing web applications and mobile apps.

    • Proficient in programming languages such as Java, Python, and JavaScript

    • Experience in developing RESTful APIs and integrating third-party APIs

    • Familiarity with front-end frameworks such as React and Angular

    • Strong understanding of database management systems such as MySQL and MongoDB

    • Passionate about learning new technologies and keepi

  • Answered by AI
  • Q2. Why Software industry? why not core?
  • Ans. 

    Software industry offers endless opportunities for innovation and growth.

    • Software industry is constantly evolving and offers opportunities to work on cutting-edge technologies.

    • It provides a platform to solve complex problems and create innovative solutions.

    • The demand for software engineers is high and the industry offers competitive salaries.

    • Core industries may have limited scope for growth and innovation compared to s...

  • Answered by AI
  • Q3. Write a program to print the given string in reverse
  • Ans. 

    Program to print a given string in reverse

    • Create a character array of the given string

    • Loop through the array from end to start and print each character

  • Answered by AI
  • Q4. Some questions about computer networks and Digital electronics
  • Q5. What is Mux? what are its real life applications?
  • Ans. 

    Mux is a device that selects one of several input signals and forwards the selected input into a single output line.

    • Mux stands for Multiplexer.

    • It is used in digital circuits to select one of several input signals and forward the selected input into a single output line.

    • It is used in communication systems to combine multiple signals into a single channel for transmission.

    • It is used in video and audio systems to switch b...

  • Answered by AI
  • Q6. What is DeMux? what are its real life applications?
  • Ans. 

    DeMux is short for Demultiplexer. It is a digital circuit that takes one input and directs it to multiple outputs.

    • DeMux is used in digital communication systems to separate signals that have been combined for transmission.

    • It is also used in computer memory systems to select a specific memory location.

    • DeMux is used in video and audio systems to separate different channels of information.

    • It is used in automation systems ...

  • Answered by AI
  • Q7. Difference between decoder and Demux
  • Ans. 

    Decoder converts encoded data into a readable format while Demux separates a single input into multiple outputs.

    • Decoder is used to decode encoded data such as binary data into a readable format.

    • Demux is used to separate a single input into multiple outputs based on the control signals.

    • Decoder is a combinational circuit while Demux is a sequential circuit.

    • Decoder is used in applications such as remote controls, computer...

  • Answered by AI
  • Q8. Why amadeus labs?
  • Ans. 

    Amadeus Labs is a leading technology company in the travel industry.

    • Amadeus Labs provides opportunities to work on cutting-edge technologies.

    • The company has a strong focus on innovation and research.

    • Amadeus Labs has a global presence and offers a diverse and inclusive work environment.

    • Working at Amadeus Labs provides the opportunity to make a real impact on the travel industry.

    • The company values work-life balance and o

  • Answered by AI
  • Q9. Are you comfortable in working for Testing?
  • Ans. 

    Yes, I am comfortable working for Testing.

    • I have experience in testing and understand its importance in software development.

    • I am willing to learn new testing techniques and tools.

    • I am comfortable working with testing teams and collaborating with them to ensure quality software.

    • I understand the importance of testing in ensuring customer satisfaction and reducing costs.

    • Examples: I have experience in manual and automated...

  • Answered by AI
  • Q10. Why do you consider yourself suitable for developer role?
  • Ans. 

    I have the necessary skills and experience to excel in the developer role.

    • I have a degree in computer science and have completed multiple coding projects.

    • I am proficient in programming languages such as Java, Python, and C++.

    • I have experience working with databases and web development frameworks.

    • I am a quick learner and enjoy solving complex problems.

    • I am a team player and have collaborated with other developers on var

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: The test was conducted online. All the questions were of medium standard and easy to crack if we have patience for thinking.

English comprehension level is slightly below the standard of CAT. Those who have the habit of reading English news paper can easily crack the test.

Data analysis questions were also of medium standard. Those who have knowledge about graphs, bar & pie charts can easily crack the exam.
Tips: Practice Aptitude questions from R S Agarwaal book and CAT material.

Round: Technical Interview
Experience: Over all interview experience is cool. Interviewers never grilled on anything. In many cases they have helped me to arrive at answers.
Tips: Read C++ and Oops concepts from E Balaguruswamy text book.
For Data structures and algorithms read 'Data structures' by Yeshwant kanethkar.
Minimum knowledge about all the courses of your department will be an added advantage. This will help you to depict you are sincere in your studies and don't have any personal constraints in learning a new thing.

General Tips: Just be confident and believe in yourself. You will get through.
Skills: Programming skill in C++
College Name: NIT Warangal
Motivation: No special motivation. It is a rapidly growing company offering good package.

Skills evaluated in this interview

ACI Worldwide Interview FAQs

How to prepare for ACI Worldwide Software Engineer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at ACI Worldwide. The most common topics and skills that interviewers at ACI Worldwide expect are Linux, Computer science, Unix, Oracle and Software Solutions.
What are the top questions asked in ACI Worldwide Software Engineer interview?

Some of the top questions asked at the ACI Worldwide Software Engineer interview -

  1. Modern forntend technology like Angular Js , React Js, Web services like Rest a...read more
  2. Asking some logical question related to Java and spr...read more
  3. Basic Java concepts, Opps concep...read more

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ACI Worldwide Software Engineer Salary
based on 150 salaries
₹7.6 L/yr - ₹23.6 L/yr
78% more than the average Software Engineer Salary in India
View more details

ACI Worldwide Software Engineer Reviews and Ratings

based on 17 reviews

3.6/5

Rating in categories

3.6

Skill development

4.2

Work-life balance

3.5

Salary

3.2

Job security

4.0

Company culture

2.5

Promotions

3.5

Work satisfaction

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