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Senior Python interview prep — algorithms, system design, behavioral (FAANG + scale-ups)

The interview is a different sport from the day job. We treat it like one — drilled, timed, with explicit feedback on the patterns that actually score.

The depressing version of interview prep is grinding LeetCode in a vacuum: 200 problems solved, 10 patterns internalised, and no idea which 10 are actually being asked at the companies you're targeting in 2026. The hopeful version is opinionated drilling: the patterns that show up over and over (sliding window, two-pointer, BFS/DFS, heap-as-priority-queue, hash-map-as-cache), the language quirks Python interviewers love (slicing edge cases, mutable default arguments, comprehensions vs. for loops for perf), and one capstone mock onsite that mirrors a real 45-minute coding round.

Our Interview Prep track is 100 lessons of that opinionated drilling, pairing with the System Design and Senior tracks for the harder mid+ rounds. The 60-day FAANG-tier path threads them together with a daily plan; the capstone walks through a meeting-room scheduling problem end-to-end (sort, min-heap, complexity analysis) plus a behavioral closing question worth practising out loud.

Open the 60-day senior interview plan

Or start with one of these

Interview Prep — 100 lessons
Algorithm + data structure drills, language quirks, capstone.
System Design track
What FAANG-tier interviews actually ask, for Python juniors.