IBM Coding Questions
Coding problems with solutions
IBM Interview Experience 2025-2026 | Real Candidate Stories & Tips
Read authentic IBM interview experiences from recent candidates 2025-2026. Round-by-round breakdown, questions asked, preparation tips, and strategies for IBM placement.
IBM runs campus and off-campus hiring through a 90-minute online assessment (aptitude, reasoning, verbal, technical concepts, and 1–2 coding problems), followed by technical and HR interviews. The process usually takes 2–3 weeks. Eligibility is 65% / 6.5+ CGPA; freshers are hired as Associate System Engineer (₹4.5–6 LPA). IBM values fundamentals, problem-solving, and familiarity with cloud/AI themes.
IBM Interview Process at a Glance
Section titled “IBM Interview Process at a Glance”| Round | Duration | Focus Areas |
|---|---|---|
| Online Assessment | 90 min | Quantitative (15–20 Q), Logical Reasoning (15–20 Q), Verbal (10–15 Q), Technical (5–10 Q: OOP, DB, cloud basics), Coding (1–2). All sections mandatory. |
| Technical Interview | 45 min | Coding (Java/Python/C++/JS), data structures, algorithms, OOP, DBMS, cloud basics, project discussion. |
| HR Interview | 30 min | Background, why IBM, career goals, teamwork, communication. |
Experience 1: Associate System Engineer – Selected ✅
Section titled “Experience 1: Associate System Engineer – Selected ✅”Date: October 2024 · Branch: CSE · Package: ₹4.5–6 LPA
Online Assessment
Section titled “Online Assessment”OA had quant, reasoning, verbal, and a technical section (OOP, DB, basic cloud). Coding had 2 problems (e.g. array/string, simple DP or greedy). I solved one fully and explained approach for the other. Tip: Time management is key; technical section is concept-based—revise OOP, SQL, and cloud fundamentals.
Technical Round
Section titled “Technical Round”Started with project discussion, then: implement a data structure (e.g. LRU or stack), difference between abstract class and interface, and a SQL query (e.g. second highest salary). They asked about time/space complexity. Tip: Use Java or Python if comfortable; explain logic before coding.
HR Round
Section titled “HR Round”Questions: Why IBM?, interest in cloud/AI, where do you see yourself in 5 years, one teamwork example. Tip: Mention IBM’s work in hybrid cloud, Watson, and enterprise solutions.
Experience 2: ASE – Selected ✅
Section titled “Experience 2: ASE – Selected ✅”Date: November 2024 · Branch: IT · Package: ₹4.5–6 LPA
Online Assessment
Section titled “Online Assessment”Similar pattern; coding was medium level. I focused on clearing each section and made sure at least one coding solution was correct. Tip: Practice IBM-style papers; no negative marking but sectional cutoffs apply.
Technical Round
Section titled “Technical Round”Deep dive on projects, then: reverse linked list, explain polymorphism, normalize a table to 3NF, and basics of REST/APIs. Tip: Be ready to code on a shared doc or whiteboard; clarity of thought matters.
HR Round
Section titled “HR Round”Short round: tell me about yourself, why IBM, strengths/weaknesses, willingness to relocate. Tip: Keep answers concise and aligned with IBM’s culture.
Common Questions at IBM
Section titled “Common Questions at IBM”Technical
Section titled “Technical”- OOP: inheritance, polymorphism, abstract class vs interface
- DBMS: SQL joins, normalization, indexes
- Coding: reverse string/list, second largest, prime check, array problems
- Cloud: basic AWS/IBM Cloud concepts (sometimes)
- Data structures: arrays, linked lists, stacks, trees
- Why IBM? / What do you know about IBM?
- Tell me about yourself
- Interest in cloud/AI
- Where do you see yourself in 5 years?
- Describe a team project / conflict resolution
Related Resources
Section titled “Related Resources”IBM Preparation Guide
Complete preparation strategy
IBM 2025 Papers
Previous year papers
IBM Aptitude Questions
Aptitude practice
IBM Main Page
Eligibility, process, salary
Written by the placementpapers.app editorial team · Verified by industry hiring professionals
Last updated: February 2026