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Infosys Specialist Programmer (SP)

Complete Preparation Guide 2026

Package: ₹21 LPA

Overview

The Specialist Programmer (SP) role is one of the most prestigious profiles at Infosys for freshers. It focuses on high-level coding skills, problem-solving, and system design capabilities.

3 Rounds

Selection Process

Hard

Difficulty Level

₹21 LPA

Salary Package

2026 Real-time Interview Pattern

Based on recent candidates' experiences (Off-campus & On-campus):

Online Coding Round (3 Hours)
  • Question 1 (Easy): Arrays/Strings (e.g., Kadane's, Sliding Window).
  • Question 2 (Medium): Greedy/Heap/Stack (e.g., Merge Intervals, Next Greater Element).
  • Question 3 (Hard): Dynamic Programming/Graph (e.g., LCS, Knapsack, Rotten Oranges).
Technical Interview (45-60 Mins)
  • No Intro (Sometimes): Interviewers may jump directly to DSA questions.
  • Coding on Paper/Notepad: Be ready to write full code without an IDE.
  • Project Deep Dive: Questions on Architecture, Database Schema, and Challenges faced.
  • Emerging Tech: Be prepared for questions on AI/ML or Cloud if mentioned in resume.
  • Scenario Based: "How would you design a system to handle X?"

30-Day Preparation Strategy

Week 1-2: DSA Foundation

Focus on building a strong base. Solve 3-4 problems daily.

  • Arrays: Sliding Window, Two Pointers, Kadane's Algorithm
  • Strings: Palindromes, Anagrams, Pattern Matching
  • Linked Lists: Reversal, Cycle Detection, Merge Sort
Week 3: Advanced Concepts

These topics differentiate SP from regular roles.

  • Trees & Graphs: BFS, DFS, Dijkstra, LCA, Traversals
  • Dynamic Programming: Knapsack, LCS, LIS, Grid Paths
  • Greedy Algorithms: Activity Selection, Huffman Coding
Week 4: Mock & Polish

Final preparation phase.

  • Take timed mock tests (3 hours)
  • Revise Core CS: DBMS (SQL), OS (Threads, Processes), Networks
  • Prepare System Design basics (HLD/LLD for simple apps)

Crucial Topics Checklist

Data Structures
  • HashMaps & Sets
  • Heaps (Priority Queue)
  • Binary Search Trees
  • Tries & Graphs
Algorithms
  • Dynamic Programming (Must Do)
  • Backtracking
  • Sorting (Merge/Quick/Heap)
  • Graph Traversals
Pro Tips
  1. Brute Force First: Always explain the brute force solution before optimizing.
  2. Think Out Loud: The interviewer cares about your thought process more than the syntax.
  3. Clean Code: Use meaningful variable names. Modularize your code into functions.
  4. Edge Cases: Always handle null checks, empty inputs, and boundary conditions.

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