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Amdocs Software Developer Interview Questions and Answers

Updated 30 Jun 2025

105 Interview questions

🔥 Asked by recruiter 2 times
A Software Developer was asked
Q. 

First Unique Character in a String Problem Statement

Given a string STR consisting of lowercase English letters, identify the first non-repeating character in the string and return it. If no such character...

Ans. 

Identify the first non-repeating character in a string and return it, or '#' if none exists.

  • Iterate through the string to count the frequency of each character

  • Iterate through the string again to find the first character with frequency 1

  • Return the first non-repeating character or '#' if none exists

A Software Developer was asked
Q. 

Reverse Linked List Problem Statement

Given a singly linked list of integers, return the head of the reversed linked list.

Example:

Initial linked list: 1 -> 2 -> 3 -> 4 -> NULL
Reversed linke...
Ans. 

Reverse a singly linked list of integers and return the head of the reversed linked list.

  • Iterate through the linked list and reverse the pointers to point to the previous node instead of the next node.

  • Use three pointers - prev, current, and next to reverse the linked list in O(N) time and O(1) space complexity.

  • Update the head of the reversed linked list as the last node encountered during the reversal process.

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A Software Developer was asked
Q. 

Find Duplicates in an Array

Given an array ARR of size 'N', where each integer is in the range from 0 to N - 1, identify all elements that appear more than once.

Return the duplicate elements in any order...

Ans. 

Find duplicates in an array of integers within a specified range.

  • Iterate through the array and keep track of the count of each element using a hashmap.

  • Return elements with count greater than 1 as duplicates.

  • Time complexity can be optimized to O(N) using a set to store duplicates.

A Software Developer was asked
Q. What are Serialization and Deserialization in Java?
Ans. 

Serialization is the process of converting an object into a byte stream, while deserialization is the reverse process.

  • Serialization is used to persist object state or transmit objects over a network.

  • Deserialization reconstructs the object from the byte stream.

  • Java provides Serializable interface for serialization and ObjectInputStream/ObjectOutputStream classes for deserialization.

  • Example: Serializing an object to...

What people are saying about Amdocs

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a software engineer
3d
Making a Career Move — Safe Bet or Fast Track?
I’m a Software Developer with 4 years of experience and currently facing a tough career decision. I have two job offers: One is from a large, stable, and reliable organization with a strong brand, structured processes, and good work-life balance. The other is from a smaller, fast-growing company that promises faster learning, more responsibilities, and slightly better pay, but comes with uncertainty and less stability. At this stage of my career, should I prioritize stability and long-term security, or go for rapid growth and technical exposure? Would appreciate insights from anyone who’s made a similar choice — what path did you take, and how did it shape your career?
Got a question about Amdocs?
Ask anonymously on communities.
A Software Developer was asked
Q. Can you explain the SOLID principles in Object-Oriented Design?
Ans. 

SOLID principles are a set of five design principles that help make software designs more understandable, flexible, and maintainable.

  • S - Single Responsibility Principle: A class should have only one reason to change.

  • O - Open/Closed Principle: Objects should be open for extension but closed for modification.

  • L - Liskov Substitution Principle: Subtypes should be substitutable for their base types.

  • I - Interface Segreg...

🔥 Asked by recruiter 2 times
A Software Developer was asked
Q. Can you explain piping in Unix/Linux?
Ans. 

Piping in Unix/Linux allows the output of one command to be used as the input for another command.

  • Piping is done using the | symbol

  • It helps in chaining multiple commands together

  • Example: ls -l | grep .txt

A Software Developer was asked
Q. How can you print numbers from 1 to 100 using more than two threads?
Ans. 

Use three threads to print numbers from 1 to 100 in sequence.

  • Create three threads, each responsible for printing numbers in a specific range (e.g. 1-33, 34-66, 67-100).

  • Use synchronization mechanisms like mutex or semaphore to ensure proper sequencing of numbers.

  • Thread 1 prints numbers 1-33, Thread 2 prints numbers 34-66, Thread 3 prints numbers 67-100.

Are these interview questions helpful?
A Software Developer was asked
Q. 

Merge Sort Problem Statement

You are given a sequence of numbers, ARR. Your task is to return a sorted sequence of ARR in non-descending order using the Merge Sort algorithm.

Explanation:

The Merge Sort ...

Ans. 

Implement Merge Sort algorithm to sort a sequence of numbers in non-descending order.

  • Divide the input array into two halves recursively until each array has only one element.

  • Merge the sorted halves to produce a completely sorted array.

  • Time complexity of Merge Sort is O(n log n).

  • Example: Input: [3, 1, 4, 1, 5], Output: [1, 1, 3, 4, 5]

A Software Developer was asked
Q. 

Cycle Detection in a Singly Linked List

Determine if a given singly linked list of integers forms a cycle or not.

A cycle in a linked list occurs when a node's next points back to a previous node in the l...

Ans. 

Detect if a singly linked list forms a cycle by checking if a node's next pointer points back to a previous node.

  • Use Floyd's Cycle Detection Algorithm to determine if there is a cycle in the linked list.

  • Maintain two pointers, one moving at twice the speed of the other, and check if they meet at any point.

  • If the fast pointer reaches the end of the list (null), there is no cycle.

  • If the fast and slow pointers meet at...

A Software Developer was asked
Q. What is an Inner Join in SQL?
Ans. 

Inner Join in SQL is used to combine rows from two or more tables based on a related column between them.

  • Inner Join returns only the rows that have matching values in both tables

  • It is the most common type of join used in SQL

  • Syntax: SELECT columns FROM table1 INNER JOIN table2 ON table1.column = table2.column

  • Example: SELECT orders.order_id, customers.customer_name FROM orders INNER JOIN customers ON orders.customer...

Amdocs Software Developer Interview Experiences

137 interviews found

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What are the key concepts of Object-Oriented Programming (OOP)?
  • Ans. 

    Key concepts of OOP include encapsulation, inheritance, polymorphism, and abstraction.

    • Encapsulation: Bundling data and methods that operate on the data into a single unit (object).

    • Inheritance: Allowing a class to inherit properties and behavior from another class.

    • Polymorphism: Objects of different classes can be treated as objects of a common superclass.

    • Abstraction: Hiding complex implementation details and showing onl...

  • Answered by AI
  • Q2. What is the internal working mechanism of a HashMap?
  • Ans. 

    HashMap is a data structure that stores key-value pairs and uses hashing to quickly retrieve values based on keys.

    • HashMap internally uses an array of linked lists to store key-value pairs.

    • When a key-value pair is added, the key is hashed to determine the index in the array where the pair will be stored.

    • If multiple keys hash to the same index (collision), a linked list is used to store these pairs.

    • To retrieve a value, t...

  • Answered by AI
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Easy to medium questions

Round 2 - One-on-one 

(2 Questions)

  • Q1. Linked list insertion deletion
  • Q2. Reversal of nodes in linked list

Skills evaluated in this interview

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-

I applied via Campus Placement

Round 1 - Coding Test 

Arrays Lists Queues Maps

Round 2 - HR 

(2 Questions)

  • Q1. Your personal details
  • Q2. Educational Details
Interview experience
1
Bad
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. What is SDLC AND TYPES?
  • Ans. 

    SDLC stands for Software Development Life Cycle. It is a process used by software developers to design, develop, and test software.

    • SDLC is a systematic process for building software applications.

    • There are different types of SDLC models such as Waterfall, Agile, Iterative, Spiral, etc.

    • Each type of SDLC model has its own set of advantages and disadvantages.

    • SDLC involves phases like planning, analysis, design, implementat...

  • Answered by AI
  • Q2. What is bug and unit testing?
  • Ans. 

    A bug is an error, flaw, failure, or fault in a computer program or system. Unit testing is a software testing method where individual units or components of a software are tested in isolation.

    • Bug is an error, flaw, failure, or fault in a computer program or system.

    • Unit testing is a software testing method where individual units or components of a software are tested in isolation.

    • Bug testing helps identify and fix issu...

  • Answered by AI

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Referral and was interviewed in Jul 2024. There were 2 interview rounds.

Round 1 - Technical 

(2 Questions)

  • Q1. System design concepts ?
  • Q2. Difference between stringbuffer and stringbuilder?
  • Ans. 

    StringBuffer is synchronized and thread-safe, while StringBuilder is not synchronized.

    • StringBuffer is slower due to synchronization, while StringBuilder is faster.

    • StringBuffer is preferred in multithreaded environments, while StringBuilder is preferred in single-threaded environments.

    • Example: StringBuffer sb = new StringBuffer(); StringBuilder sb = new StringBuilder();

  • Answered by AI
Round 2 - HR 

(2 Questions)

  • Q1. When can you join ?
  • Ans. 

    I can join within 2 weeks of receiving an offer.

    • I can start within 2 weeks of receiving an offer.

    • I need to give notice at my current job before starting a new position.

    • I have some personal commitments that I need to wrap up before joining.

  • Answered by AI
  • Q2. What are your salary expectations?
  • Ans. 

    My salary expectations are based on my experience, skills, and the market rate for the position.

    • Research the average salary for Software Developers in the specific location and industry

    • Consider your years of experience and relevant skills

    • Be prepared to negotiate based on the benefits package offered

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Just go through basics thoroughly.

Skills evaluated in this interview

Software Developer Interview Questions & Answers

user image Sahil Choudhary

posted on 11 Jan 2025

Interview experience
3
Average
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. OOPs concept and some array based question, SQL on joins
Interview experience
4
Good
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I appeared for an interview in Jul 2024.

Round 1 - Coding Test 

Coding test consist of some basic gate questions and then 2 leetcode easy question

Round 2 - Technical 

(2 Questions)

  • Q1. Regarding project
  • Q2. Regarding some technical questions from resume

Software Developer Interview Questions & Answers

user image Abhijit Kadam

posted on 1 Dec 2024

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(2 Questions)

  • Q1. Java 8 features
  • Q2. Springboot questions
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Aptitude Test 

Mcq questions to be completed in one hour

Round 2 - Technical 

(2 Questions)

  • Q1. Had basic react questions, like what is jsx, why to use fragments, diff between class and functional component.
  • Q2. Was asked to create a login component
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

One hour of Test with C program and aptitude

Round 2 - Technical 

(3 Questions)

  • Q1. Question on C language , Linux and SQL
  • Q2. Basic commands in Linux
  • Q3. Strings manipulations' in C
  • Ans. 

    String manipulation in C involves various functions to perform operations on strings like concatenation, comparison, and copying.

    • Use functions like strcpy() for copying strings

    • Use functions like strcat() for concatenating strings

    • Use functions like strcmp() for comparing strings

  • Answered by AI
Round 3 - HR 

(1 Question)

  • Q1. Salary Discussion

Skills evaluated in this interview

Amdocs Interview FAQs

How many rounds are there in Amdocs Software Developer interview?
Amdocs interview process usually has 2-3 rounds. The most common rounds in the Amdocs interview process are Technical, Coding Test and HR.
How to prepare for Amdocs Software Developer 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 Amdocs. The most common topics and skills that interviewers at Amdocs expect are microsoft, Technical Support, Amdocs, Continuous Improvement and Unix.
What are the top questions asked in Amdocs Software Developer interview?

Some of the top questions asked at the Amdocs Software Developer interview -

  1. Puzzle:- you have two jars 3L and 5L and unlimited supply of water. How will yo...read more
  2. What is singleton calss?Write a program to make a class singlet...read more
  3. Challenges faced in your RPA experience and how you resolved ...read more
What are the most common questions asked in Amdocs Software Developer HR round?

The most common HR questions asked in Amdocs Software Developer interview are -

  1. What are your strengths and weakness...read more
  2. Why are you looking for a chan...read more
  3. What are your salary expectatio...read more
How long is the Amdocs Software Developer interview process?

The duration of Amdocs Software Developer interview process can vary, but typically it takes about less than 2 weeks to complete.

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