💼 Walmart SDE Intern + FTE Interview Experience (College Hiring – March 2024)

🧭 Interview Process Flow

1. Online Coding Test
2. Technical Interview 1
3. Technical Interview 2
4. HR Interview
5. Final Selection

🖥️ Stage 1: Online Coding Test

• 📆 Date: 11th March 2024
• ⏱️ Duration: 90 minutes
• 👨‍💻 Platform: HackerEarth
• 👥 Candidates Appeared: 114

🧠 Format:

• 10 MCQs (OS, DBMS, CN, DSA)
• 2 Coding Questions

💻 Coding Questions:

Q1. Make Two Strings Equal with Swaps

• You can swap within a string or between the two strings.
• ✅ Logic: If all character frequencies across both strings are even, strings can be made equal.
• Points: 30

Q2. Unreachable Pairs After Edge Removal (Graph)

• Undirected connected graph, remove edges one by one and count (u, v) pairs that become unreachable.
• ✅ Key Idea: Think in reverse using DSU (Disjoint Set Union) to manage connectivity.
• Points: 50 (partial score)

📎 DSA Problem Link (asked in online round)

🟢 My friend solved Q1 fully and Q2 partially → Shortlisted among 36 candidates.

💬 Stage 2: Technical Interview 1

• 🕐 Time: Same day, 11:00 AM
• 🧑‍💼 Platform: Zoom (Breakout Room)

🔍 Questions:

• Intro + Past internship + Projects
• OS in one word: User-Interface
• Types of interrupts (needed a hint)
• Coding:
  • Binary Tree with mirror pointers
  • Find min distance between any 2 nodes → Solved using BFS
• What happens when you type www.google.com?
• ❌ Network Qs: Hub vs Switch, Noise Impairment (struggled)
• SQL vs NoSQL – explained with examples
• Coding (Index Shifting): Right shift subarray in multiple [l, r] queries → Optimized using index transformation

😅 Despite 2 missed answers, selected among 24 candidates for next round.

💬 Stage 3: Technical Interview 2

• 🕓 Time: 4:00 PM (Same day)
• 👨‍💼 New interviewer, same Zoom format

🔍 Questions:

• Summary of CV + Project demo (GitHub video impressed interviewer)
• Coding:
  • Implement Stack using Queues
  • Find time slots where 3 students are free (interval merging + 2 pointers)
• What is Normalization? Explained till BCNF
• OOP Concepts → Live coded example with Shape, Rectangle, Square
• What are Virtual Functions? Explained static/dynamic binding and pure virtuals

✅ Smoother round than before. Unfortunately, my friend left the Zoom meeting, missing the same-day HR round.

💬 Stage 4: HR Round (Next Day)

• 🕚 Time: 11:00 AM (Following day)
• 👩‍💼 Experienced HR (15+ years)

🔍 Topics:

• Intern project motivations, audience, challenges
• Walkthrough of other projects (with GitHub demo)
• HR appreciated the quality of work and impact

💬 Short and impactful (~30 mins). My friend felt confident after this round.

📢 Final Results

• 🗓️ Announced: 13th March 2024, 1:00 PM
• ✅ All 24 candidates were selected!
  • 10 received FTE + 6-Month Internship
  • 14 received Internship only

🥲 My friend was among the 14 — possibly because FTE slots filled early on the day of HR interviews. Leaving the meeting might’ve cost the full-time opportunity.

🎯 Final Verdict

✅ Selected for 6-Month Internship at Walmart India
🏁 FTE offer not received, but a fantastic internship opportunity nonetheless.