Interview Prep · Soft Skills & Ecosystem Deep Dive

The Loop

What Most Companies Actually Run

Round	What's tested	Prep
Recruiter screen	Fit, comp expectations, basic CV check	Your story in 60 seconds; comp range; what you want next.
Coding (live)	Data structures & algorithms; clear thinking under time	LeetCode patterns (75–150 problems); think-aloud practice.
System design	Architecture, trade-offs, scaling	Read DDIA; do 5+ mock designs; learn the standard playbook.
Take-home / pair	Code quality on a real-shaped problem	Treat it like a small PR — clean structure, tests, README.
Behavioral	How you collaborate, handle conflict, deliver	10–15 STAR stories from your past two roles.
Hiring manager / bar raiser	Strategy fit, leadership, calibration	Know the company & team; have your "why this role" answer.

Coding

Patterns > quantity. 100 problems across 15 patterns beats 500 random problems. Blind 75 and NeetCode 150 are the standard lists.
Think aloud. Interviewers grade your process, not just the final code.
Clarify before coding. Edge cases, input size, constraints. 90 seconds spent here saves 10 minutes later.
Brute force first. Get something working; then optimize. Don't sit silent searching for the elegant answer.
Time complexity. State Big-O on the way in, on the way out.
Mock interviews. Pramp, interviewing.io, friends — interview tempo is hard to simulate alone.

System Design

Drive the requirements. Functional + non-functional. Throughput, latency, consistency, durability — pick your bars.
Sketch the high-level diagram early — clients, edge, services, data stores, queues, caches.
Pick storage deliberately. SQL vs NoSQL vs object store vs cache vs warehouse — justify each.
Talk trade-offs explicitly. Strong consistency vs availability; cost vs latency. There are no perfect answers.
Estimate scale — back-of-envelope QPS, storage growth, bandwidth. Fluency matters.
Resources — System Design Primer (GitHub), Designing Data-Intensive Applications, Hello Interview, ByteByteGo.

Behavioral (STAR)

Situation — context in two sentences.
Task — what you specifically owned.
Action — what you did (use "I", not "we").
Result — quantified outcome where possible.
Have stories ready for: conflict with a teammate, project that failed, hard tradeoff, ambiguous problem, leading without authority, mentoring, taking feedback.
Big-tech specifics. Amazon's leadership principles, Google's GCAs, Meta's signals — pre-map your stories to the company's framework.

Take-Homes

Stick to the brief. Don't overbuild — they grade clarity, not breadth.
README first. What you built, how to run it, choices made, what you'd do with more time.
Tests. Even a few; signals you take quality seriously.
Time-box. If they say 4 hours, ship at 4. Polished partial > complete-but-rushed.
Avoid unpaid epics. A take-home over 8 hours is a red flag — it's no longer an interview, it's free consulting.

Logistics

Negotiate. Always. Even small companies expect counter-offers; the worst answer is "no, we can't move."
Run loops in parallel when possible. A second offer is the strongest negotiation lever.
Levels & comp data — Levels.fyi, Glassdoor, Blind. Know the band before the call.
Reverse interview. Real questions about team health: tenure, on-call, deploy frequency, retro outcomes, last incident.
Take notes during. Same-day debrief while everything's fresh.
Rejection isn't a verdict on you. Calibrations, headcount freezes, "team fit" — most rejections aren't about competence.

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