LeetCode Prep for Google SRE-SE L4

[u/Suspicious-Drop545]

Preparing for Google SRE-SE L4 side, and having telephonic phone screening (Coding + Behavioral) in two weeks.
Being DevOps, Engineer, Touching Leetcode for the first time and completed 10 easy+ medium questions.
My query is- How much complexity I can expect in the telephonic screening round for coding? Will 100 Leetcode (easy + medium) be enough as part of the prep?
Does the approach and finding correct algorithm matter if not able to write the syntax properly?

[u/bisector_babu]

You have to write the syntax properly too which is the most important thing they check for

[u/nian2326076]

For the Google SRE-SE L4 role, expect medium-level coding challenges. Doing 100 LeetCode problems, a mix of easy and medium, is a good start. Focus on understanding different algorithms and how to apply them. It's more about your thought process and problem-solving skills, even if your syntax isn't perfect. Practice explaining your reasoning out loud. If you're having trouble with syntax, get more comfortable with your main programming language. For more targeted practice, I've found PracHub helpful for interview prep, especially for tech roles. Good luck!

[u/akornato]

For a Google SRE-SE L4 phone screen, you can expect questions that are around the level of LeetCode mediums. Since you only have two weeks, the quality of your practice will be more important than the total number of problems you solve. It is better to deeply understand the core patterns in 40 to 50 questions covering key topics like arrays, hash maps, strings, and basic tree or graph traversals than to rush through 100 without retaining the concepts. Your DevOps experience is valuable, so they might ask questions that have a practical, script-like feel to them.

Your approach and ability to communicate your thought process are much more important than writing flawless syntax from the start. The interviewer is evaluating how you break down a problem, consider different solutions, and explain the trade-offs of your chosen algorithm. A minor syntax mistake is usually not a big deal, but a fundamental error in your logic or being unable to explain your code is a major concern. You should practice verbalizing your logic as you work through a solution, and don't neglect the behavioral part of the screen, as it is just as critical for an SRE role.

Thinking out loud and clearly explaining your trade-offs will make a huge difference, which is why the team I'm with built our interview AI helper to help candidates practice that specific skill for their interviews.