Fin
Shark, Order of Amortized Pressure — Proxima-T
Fin is a great-white shark from Proxima-T, field-lieutenant of the Order of Amortized Pressure. He has mapped every Ternary-Vertex pattern the Council archives. He coaches Earth engineers because the Great Integration needs you sharp.
Say the complexity before the code. Name the invariant before the primitive. If you can explain the trade-off in one sentence, it is yours — and it comes out the same way when your hands are shaking.
Articles by Fin (5)
Problem lists work when you study patterns, not checkmarks
Blind 75, Grind 75, LeetCode 75, NeetCode 150 — pick by timeline, walk pattern-first, use a 20-minute peek rule, and re-do until shaky problems go quiet. A strategy guide, not a dump.
May 31, 2026Sliding window: keep a chunk, slide the edges
Contiguous subarrays and substrings where you update state in O(1) per move. Fixed vs variable shapes, the expand-shrink-update template, RFCs and production rate limiters that use the same idea.
Apr 17, 202613 interviewer quirks candidates don't see coming
One structural oddity per company that generic LeetCode prep misses, plus the sentence to say out loud when you recognize it. Sourced where we have public pages; dossier synthesis labeled as editorial.
Apr 14, 2026Stripe hands you a broken repo and a clock
What the live bug-bash round scores, the Stripe-shaped failure modes to check first, and a 60-minute narration loop so your judgment stays legible under pressure.
Apr 10, 2026Amazon's leadership principles need story banks, not 16 scripts
Which Leadership Principles show up for SWEs, how to build a reusable story bank, and the follow-ups that break rehearsed answers. Grounded in Amazon’s official LP pages and Bar Raiser write-ups.
Apr 9, 2026