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Service-Based · Company-wise prep

Infosys Placement Preparation

Official careers page

The Infosys online test mixes reasoning, maths, verbal ability and pseudocode. Higher roles (DSE, Specialist Programmer) have a separate coding test where the DSA level goes up.

  • 3 rounds
  • 3 fresher roles
  • 19 tagged DSA problems

Roles freshers apply for at Infosys

  • System Engineer (SE)

    The most common fresher role.

  • Digital Specialist Engineer (DSE)

    Offered on a good coding round.

  • Specialist Programmer (SP)

    Strong DSA: medium to hard coding.

Infosys selection process, round by round

The pattern can change slightly every season. Always read the official notification before applying.

  1. 1

    Online Test

    Logical reasoning, mathematical ability, verbal ability, pseudocode and puzzle-type questions. There may be negative marking, so read the instructions.

  2. 2

    Coding Test (DSE / SP)

    Usually 3 coding problems from easy to hard. Arrays, strings, greedy, DP and graphs can appear.

  3. 3

    Technical + HR Interview

    Projects, OOPs, DBMS/SQL, one language and HR basics. Often combined into a single interview.

Focus areas: what matters most

DSA patterns

Filter DSA sheet by Infosys

Aptitude topics

  • Pseudocode output
  • Puzzles
  • Seating Arrangement
  • Data Sufficiency
  • Reading Comprehension
  • Probability
Practise aptitude

Core CS subjects

  • DBMS and SQL MCQs
  • OOPs
  • Basic OS concepts
Technical viva questions

DSA problems for Infosys (19)

Questions on these patterns are commonly reported in Infosys tests and interviews. The exact questions change every season.

ProblemPatternDifficulty
Two Sum (opens in new tab)ArraysEasy
Maximum Subarray (Kadane's Algorithm) (opens in new tab)ArraysMedium
Valid Palindrome (opens in new tab)Two PointersEasy
Container With Most Water (opens in new tab)Two PointersMedium
Longest Common Prefix (opens in new tab)StringsEasy
Longest Substring Without Repeating Characters (opens in new tab)StringsMedium
Group Anagrams (opens in new tab)HashingMedium
Minimum Size Subarray Sum (opens in new tab)Sliding WindowMedium
Valid Parentheses (opens in new tab)StackEasy
Reverse a Linked List (opens in new tab)Linked ListEasy
Detect Cycle in a Linked List (opens in new tab)Linked ListEasy
Maximum Depth of Binary Tree (opens in new tab)TreesEasy
Binary Tree Level Order Traversal (opens in new tab)TreesMedium
Flood Fill (opens in new tab)GraphsEasy
Number of Islands (opens in new tab)GraphsMedium
Climbing Stairs (opens in new tab)Dynamic ProgrammingEasy
House Robber (opens in new tab)Dynamic ProgrammingMedium
Coin Change (opens in new tab)Dynamic ProgrammingMedium
Search in Rotated Sorted Array (opens in new tab)Binary SearchMedium

Infosys preparation tips

  • Solve pseudocode questions by dry-running them. Write each loop step's values on paper.
  • Do 2-3 puzzle and seating sets daily. These take the most time in the test.
  • Practise basic SQL queries by hand (JOIN, GROUP BY, second highest salary).
  • If you are targeting SP, solve medium DP and graph problems.

Approximate package range

Approximate, for awareness only

RoleApprox. CTC
System Engineerabout 3.6 LPA
Digital Specialist Engineerabout 6.25 LPA
Specialist Programmerabout 9.5 LPA (higher at upper levels)
This is an approximate range for preparation awareness only. It is not a guarantee. These are typical ranges from past campus seasons. The final offer is always confirmed by the company's official letter.

Other companies:TCSWiproAccentureCapgeminiAmazon

Your next step

What to do 2 days before the Infosys test

Don't open a new topic. Revise only this page's rounds, focus topics and your starred DSA problems.

See Infosys DSA problemsAll companies