📋 Interview Info
- Company: TikTok
- Role: New Grad SDE
- Round: 2nd VO
- Duration: 45 mins
- Interviewer: Senior Engineer
🎯 Interview Process
Just helped a student ace the TikTok New Grad 2nd VO. This round heavily tested logical clarity and mathematical thinking.
Part 1: Algorithm (30 mins)
Type: Array + Two Pointers
A medium-difficulty two-pointer problem: Find a subarray meeting specific conditions.
Key Points:
- Flexible Two Pointer usage
- Boundary handling
- Complexity optimization
def solve(arr, target):
left, right = 0, 0
current_sum = 0
result = []
while right < len(arr):
current_sum += arr[right]
while current_sum > target and left <= right:
current_sum -= arr[left]
left += 1
if current_sum == target:
result.append(arr[left:right+1])
right += 1
return result
Part 2: Project Deep Dive (10 mins)
- Challenge: "What was the hardest bug you fixed?"
- Collaboration: "Conflict resolution with teammates."
Part 3: Q&A (5 mins)
- Tech stack at TikTok?
- Team culture?
💡 Summary
| Dimension | Rating | Note |
|---|---|---|
| Algorithm | ⭐⭐ | Medium+, solid foundation needed |
| System Design | ⭐⭐ | Basic concepts |
| Behavioral | Standard questions |
🎓 Prep Tips
Algorithm
- LeetCode Two Pointers (20+ questions)
- Whiteboard coding practice
System Design
- Understand TikTok's core business/tech stack
- Basic distributed systems concepts
Behavioral
- Prepare 2-3 STAR stories
- Understand TikTok's culture
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