Sharing questions asked across all rounds for anyone preparing for eBay SRE.

Round 0 — Online Assessment (CodeSignal)
4 coding questions. Standard DSA difficulty.

Round 1 — Technical
• Longest substring without repeating characters
• Word Break II

Round 2 — Technical
• Longest increasing subarray
• Stack implementation using Linked List
• Queue implementation using Stack
• Time and space complexity analysis throughout

Round 3 — Technical
• Longest palindromic substring
• N-Queens II (count distinct solutions — backtracking)
• Valid Parentheses

Round 4 — Hiring Manager
Behavioural and experience based. No coding.

Bar Raiser Round
• String merge with custom character ordering based on frequency — Two pointer approach — O(n+m) — Passed all test cases
• System Design — What happens when you type google.com
• TCP vs UDP vs QUIC
• HTTP status codes and SRE alerting
• Kubernetes concepts deep dive
• Toil reduction example
• Behavioural questions

Final Result — Not selected after Bar Raiser.

Hope this helps someone preparing! Happy to answer questions.