Infosys Interview Questions 2026

Last Updated: May 14, 2026

Truth check — what actually matters for Infosys 2026

Infosys is the service-IT incumbent that has visibly tightened its 2026 fresher funnel. SP (Specialist Programmer) and DSE (Digital Specialist Engineer) bands now matter more than the entry-level System Engineer band, and the difference is roughly 2-3x in starting LPA, with much of the gap surviving through the first appraisal.

The 2026 snapshot: ~2,200 active roles tracked as of mid-May 2026. The InfyTQ Certified application portal reopened on May 6 after the late-April pause, and the May 2026 appraisal cycle (results from May 6 onward) is delivering 12-14% hike for Outstanding-rated SEs, 8-10% for Exceeds, 5-7% for Meets, these numbers shape what current SEs are using as the negotiation anchor in interview HR rounds. SP/DSE-band positions are a small fraction of the 2,200, single-digit percentage. The SP-track test aggregate cutoff rose from 65% (December 2025) to 68% this cycle. The competition for the upper bands is sharp, and the test selectivity reflects that.

What standard guides get wrong: the basic mathematical/logical reasoning section is not the filter. The pumice section ("Verbal Ability and Reading Comprehension") is. Engineering candidates routinely overprepare arithmetic and underprepare reading comprehension under timed pressure. Reading speed at 250+ wpm with comprehension intact is the most underrated prep target for Infosys.

For SP / DSE specifically, the advanced programming round uses 1-2 hard DSA problems. Topics that show up disproportionately: dynamic programming variants, graph traversal with weighted edges, string-pattern matching. Standard tree problems are not the focus.

The HR round is unusually conversational. It rarely tests technical depth; it tests whether you sound coachable. The candidates we tracked who got ghosted post-final round had nothing wrong with their answers, they had a defensive tone.

If you have 2 weeks for Infosys SP / DSE only: 5 days of advanced DSA on Striver-A2Z, 5 days of timed reading comprehension and verbal, 2 days of pseudo-code-MCQ practice, 2 days of mock HR with a recorder.

Infosys Selection Process Overview

HR Interview Questions with Answers

Q1: Why do you want to work at Infosys?

Q2: What do you know about InfyTQ?

Q3: Describe your ideal work environment.

Q4: How do you handle constructive criticism?

Q5: Are you comfortable working in a team with diverse backgrounds?

Q6: What motivates you to perform well?

Q7: How do you manage conflicts in a team?

Q8: What are your thoughts on working overtime?

Q9: Tell us about a time you went above and beyond.

Q10: How do you define success?

Technical Interview Questions with Answers

Q1: What is the difference between Python 2 and Python 3?

Python 3 is the present and future with better Unicode support, cleaner syntax, and active development. Infosys primarily uses Python 3 for its projects."

Q2: Explain the difference between List, Tuple, and Dictionary in Python.

fruits = ['apple', 'banana', 'cherry']
fruits.append('date')  # Modification allowed

Tuple: Ordered, immutable collection. Allows duplicates. Defined with (). Faster than lists, used for fixed data.

coordinates = (10, 20)
# coordinates[0] = 15  # Error - cannot modify

Dictionary: Unordered (Python 3.7+ maintains insertion order), mutable key-value pairs. Keys must be unique and immutable.

student = {'name': 'John', 'age': 22, 'grade': 'A'}
print(student['name'])  # Access by key

Use lists for sequences that change, tuples for constant data, and dictionaries for fast key-based lookups."

Q3: Write a Python program to check if a number is prime.

def is_prime(n):
    if n <= 1:
        return False
    if n <= 3:
        return True
    if n % 2 == 0 or n % 3 == 0:
        return False
    
    # Check for factors up to square root
    i = 5
    while i * i <= n:
        if n % i == 0 or n % (i + 2) == 0:
            return False
        i += 6
    
    return True

# Test
number = int(input("Enter a number: "))
if is_prime(number):
    print(f"{number} is a prime number")
else:
    print(f"{number} is not a prime number")

Time Complexity: O(√n) - optimized by checking only up to square root and skipping multiples of 2 and 3.

Q4: What is Exception Handling in Python?

try:
    # Code that might raise exception
    result = 10 / 0
except ZeroDivisionError:
    # Handle specific exception
    print("Cannot divide by zero!")
except Exception as e:
    # Handle any other exception
    print(f"Error: {e}")
else:
    # Executes if no exception occurs
    print("Division successful")
finally:
    # Always executes (cleanup code)
    print("Execution completed")

Key concepts:

• try: Block to test for errors
• except: Block to handle specific errors
• else: Executes when no exception
• finally: Always executes (resource cleanup)
• raise: Manually trigger exceptions

Custom exceptions can be created by inheriting from Exception class."

Q5: Explain Inheritance in Python with an example.

class Employee:
    def __init__(self, name, salary):
        self.name = name
        self.salary = salary
    
    def display_info(self):
        print(f"Name: {self.name}, Salary: ${self.salary}")

class Developer(Employee):  # Inherits from Employee
    def __init__(self, name, salary, programming_lang):
        super().__init__(name, salary)  # Call parent constructor
        self.programming_lang = programming_lang
    
    def display_info(self):  # Method overriding
        super().display_info()
        print(f"Language: {self.programming_lang}")

# Usage
dev = Developer("Alice", 75000, "Python")
dev.display_info()

Types of Inheritance:

• Single: One parent, one child
• Multiple: Multiple parents (class C(A, B))
• Multilevel: A → B → C
• Hierarchical: One parent, multiple children
• Hybrid: Combination of above

Python supports all types. Use super() to access parent class methods."

Q6: What are Decorators in Python?

import functools

def timing_decorator(func):
    @functools.wraps(func)
    def wrapper(*args, **kwargs):
        import time
        start = time.time()
        result = func(*args, **kwargs)
        elapsed = time.time() - start
        print(f"{func.__name__} took {elapsed:.2f} seconds")
        return result
    return wrapper

@timing_decorator
def slow_function():
    import time
    time.sleep(1)
    return "Done"

slow_function()  # Prints execution time

Use cases:

• Logging function calls
• Measuring execution time
• Authentication/authorization
• Caching results
• Input validation

@decorator syntax is syntactic sugar for function = decorator(function)."

Q7: Write a SQL query to find employees with salary greater than their managers.

-- Self-join approach
SELECT e.name AS employee_name, 
       e.salary AS employee_salary,
       m.name AS manager_name,
       m.salary AS manager_salary
FROM Employee e
JOIN Employee m ON e.manager_id = m.id
WHERE e.salary > m.salary;

-- Using subquery
SELECT name, salary
FROM Employee
WHERE salary > (
    SELECT salary 
    FROM Employee 
    WHERE id = Employee.manager_id
);

This requires a self-join since manager data is in the same table. The condition compares employee salary with their manager's salary.

Q8: What is the difference between DELETE, TRUNCATE, and DROP?

Use DELETE when you need conditional removal with transaction support. Use TRUNCATE when you want to quickly empty a table without logging individual row deletions. Use DROP when you want to completely remove the table structure."

Q9: Explain Normalization and its types.

1NF (First Normal Form):

• Atomic values (no multi-valued attributes)
• No repeating groups
• Each cell contains single value

2NF (Second Normal Form):

• Must be in 1NF
• No partial dependencies (non-key attributes depend on full primary key)
• Applicable to composite keys

3NF (Third Normal Form):

• Must be in 2NF
• No transitive dependencies (non-key attributes depend only on key)
• Eliminates indirect relationships

BCNF (Boyce-Codd Normal Form):

• Stricter version of 3NF
• For every dependency X → Y, X must be a superkey

Example Transformation: Unnormalized: Order(OrderID, CustomerName, CustomerAddress, Product1, Product2) 1NF: Separate products into rows 2NF: Separate customer info (partial dependency) 3NF: Ensure no transitive dependencies

Normalization reduces data anomalies during insert, update, and delete operations."

Q10: What is the difference between Stack and Queue?

Stack Operations:

• push(): Add element
• pop(): Remove top element
• peek(): View top without removing
• isEmpty(): Check if empty

Queue Variations:

• Simple Queue: Basic FIFO
• Circular Queue: Reuses empty spaces
• Priority Queue: Elements have priorities
• Deque: Insert/delete at both ends

Both can be implemented using arrays or linked lists, with O(1) time complexity for standard operations."

Managerial/Behavioral Questions with Answers

Q1: How do you handle a situation where requirements keep changing?

Q2: Describe a situation where you had to learn something quickly.

Q3: How would you convince a team to adopt your idea?

Q4: Tell me about a time you had to work with a difficult team member.

Q5: What would you do if you disagree with your manager's technical decision?

Tips for Cracking Infosys Interview

1. Master InfyTQ: Download the InfyTQ app and complete all modules. Focus on Python/Java fundamentals, data structures, and database concepts. The certification is your entry ticket.

2. Practice HackWithInfy Style Problems: If targeting the Power Programmer role, practice competitive programming on HackerRank, CodeChef, and LeetCode. Focus on arrays, strings, and basic algorithms.

3. Know Your Projects Deeply: Be ready to explain your academic projects in detail - architecture, your specific contributions, challenges faced, and lessons learned.

4. OOPs Concepts: Infosys interviewers love OOPs. Understand all concepts with real-world examples and be ready to write code demonstrating inheritance, polymorphism, etc.

5. Database Fundamentals: Master SQL queries, especially joins, subqueries, and aggregate functions. Understand normalization and ACID properties.

6. Pseudocode Proficiency: Practice writing clear pseudocode as Infosys often asks for algorithmic solutions without syntax constraints.

7. Stay Updated on Infosys: Know about recent Infosys acquisitions, leadership changes, and technology focus areas. Show genuine interest in the company.

8. Communication Skills: Infosys values clear communication. Practice explaining technical concepts simply. Avoid jargon unless necessary.

9. Aptitude Preparation: Don't neglect aptitude sections. Practice quantitative, logical reasoning, and verbal ability regularly.

10. Mock Interviews: Conduct mock interviews focusing on both technical and behavioral questions. Record and review your responses.

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🎯 Live Mock Test, May 2026 Edition

5 original questions written by Aditya Sharma, calibrated to the Infosys 2026 batch difficulty. Click any option to lock your answer; solutions reveal after.