Infosys vs eBay: Interview Question Comparison

When preparing for technical interviews, understanding the specific focus and expectations of each company can dramatically improve your efficiency. Infosys and eBay represent two distinct ends of the spectrum: a global IT services giant and a specialized e-commerce technology company. Their interview question profiles reflect their different business models and engineering needs.

Question Volume and Difficulty

The data shows a significant difference in the volume and distribution of questions between the two companies.

Infosys has a much larger question bank of 158 questions, with a difficulty distribution of Easy (42), Medium (82), and Hard (34). This high volume, especially the substantial number of Medium and Hard problems, suggests that Infosys's interview process may involve a broader screening of fundamental algorithmic knowledge and problem-solving stamina. The wide range is typical for large service-based companies that hire at scale for diverse projects.

eBay's profile is more concentrated, with 60 questions total, distributed as Easy (12), Medium (38), and Hard (10). The emphasis is clearly on Medium-difficulty problems. This smaller, more focused set indicates that eBay's interviews likely prioritize applied problem-solving and coding clarity over encyclopedic algorithmic knowledge. The lower proportion of Hard questions suggests a focus on practical, clean solutions to common engineering problems rather than on highly complex optimization.

Topic Overlap

Both companies heavily test core computer science fundamentals, but with different secondary emphases.

Shared Core Topics:

• Array and String manipulation are fundamental for both. Expect questions on traversal, searching, and in-place modifications.
• Sorting is a critical underlying concept for many problems, even if not listed as a primary topic for Infosys.

Diverging Focus:

• Infosys prominently lists Dynamic Programming (DP) and Math. The inclusion of DP, often a challenging topic, aligns with their larger number of Hard questions and emphasizes strong analytical and optimization skills.
• eBay prominently lists Hash Table. This highlights a practical focus on efficient data lookup, a common requirement in building scalable web applications and systems.

Here is a typical problem that could appear at either company, solved using a hash table for efficiency:

def two_sum(nums, target):
    seen = {}
    for i, num in enumerate(nums):
        complement = target - num
        if complement in seen:
            return [seen[complement], i]
        seen[num] = i
    return []

# Example
print(two_sum([2, 7, 11, 15], 9))  # Output: [0, 1]

Which to Prepare for First

Your preparation strategy should depend on your target role and timeline.

Prepare for Infosys first if: You are early in your interview preparation cycle or aiming for roles that require strong foundational mastery across a wide range of algorithms. Tackling Infosys's larger and more difficult question set will force you to cover more ground, including challenging topics like Dynamic Programming. Success here will build a robust foundation that makes eBay's more focused list feel manageable.

Prepare for eBay first if: You are short on time or targeting product-based company interviews that value clean, optimal solutions to common problems. Mastering eBay's focused list—especially becoming proficient with Arrays, Strings, and Hash Tables—will give you a high yield on core concepts. You can then supplement with Infosys's Math and DP questions if time allows.

In summary, use Infosys's list for broad, foundational drilling and eBay's list for targeted, efficient practice on the most frequently tested patterns in tech interviews.

For specific question lists, visit the Infosys and eBay question pages: Infosys | eBay