Interview Experience – SDET Role

Position: Software Development Engineer in Test (SDET) Total Rounds: 3 Overall Difficulty: Medium Focus Areas: DSA, Test Engineering, and Resume-based Discussion

Round 1: DSA – Problem Solving (Online or Technical Coding Round) Level: Easy to Medium

Round 2: DSA + Experience-Based Discussion Level: Medium Format: 2 DSA questions + past project discussion

Additional Discussion:

Questions related to previous company experience:

• Test automation framework used
• Tools and languages used in daily work
• How flaky tests and CI/CD issues were handled
• Integration with reporting tools or test management systems

Round 3: HR + Managerial Round Type: Behavioral + Technical Managerial Topics Covered:

• Past experience deep-dive based on resume

Testing Scenarios:

• Performance testing (tools like JMeter, LoadRunner)
• Writing and reviewing test plans
• Creating effective and edge case–oriented test cases

Situational/Behavioral Questions:

• How you handled bugs found late in the cycle
• Prioritization under tight deadlines
• Collaboration with developers and product owners

Tone: Friendly but focused; the manager evaluated both technical understanding and communication skills.

Final Thoughts:

This interview process was well-rounded, with a strong focus on DSA and problem-solving in the first two rounds, followed by real-world SDET responsibilities in the managerial round. Confidence in both coding and QA practices was important for success.

Longest Common Prefix – Standard string problem requiring careful handling of edge cases.

Sliding Window Maximum – A classic problem requiring use of a deque for an optimized O(n) solution.

Longest Common Subsequence (LCS) – Solved using bottom-up DP; space optimization was also discussed.

Longest Substring Without Repeating Characters – Solved using a sliding window with a hash set/map to track characters and update window pointers.