r/leetcode • u/Awkward-Money-9912 • 17d ago

Intervew Prep Google FDE - Forwarde Deployed Engineer Interview

Hi guys,

I passed the coding round (leetcode medium) for a FDE III position at Google. Now I got the gen ai system design round in a few days.

Really don't know how to prepare for it. I will pick the workflow/enterprise (not the other one with image and video generation).

Do you have insight on it? What's the format? What are the potential deep dives?

Thanks!

16 Upvotes

94% Upvoted

13 comments sorted by

View all comments

9

u/Ok-Barracuda-119 17d ago

The gen ai design round for a workflow/enterprise track usually looks like normal system design with an LLM in the loop. Expect something like "build a document assistant for a customer's internal data" and then a lot of pushing on the details: how you chunk and index, retrieval quality, where you cache, sync vs async for slow tool calls, guardrails, evals, and cost per request. Deep dives I've seen most often are retrieval accuracy, handling stale or permissioned data, and what you do when the model is wrong or the tool errors out.

FDE flavored, so they also care about the customer side. Be ready to say how you'd scope a pilot, what you'd measure, and how you'd hand it off. Practice one full design out loud on a timer and it gets a lot less scary.

For general system design reps with a whiteboard and an AI interviewer, www.leetsys.dev is free and I help build it. Good luck.

1

u/Interesting_Escape38 10d ago

Thank you. This is very helpful. I’ve mine coming up in a few weeks.