Written guides to what a technical loop actually contains: the rounds, the shape of the questions, and the things candidates get caught by. They are prepared write-ups rather than first-hand accounts from named candidates, so read them as preparation material, not as somebody else's story.
Recent SDE-2 Frontend loop at Microsoft IDC — prototype chain, infinite Promise chaining, an HOC for Suspense-style loading, and a 100-component perf question.
Stripe doesn't do LeetCode. Their interviews simulate a day-in-the-life: debug existing code, integrate APIs, design payment flows. Here's how that actually plays out.
A walk-through of the dispatch (DISCO) system Uber actually uses — S2 cells, GeoHash, and how you scale nearest-neighbour search to a city with 100K active drivers.
Five-round loop for SDE-2 Frontend at Microsoft IDC Bangalore — coding rounds, React deep-dives, system design, and the values round.
Netflix has the hardest system-design screen in FAANG — and they expect you to design for failure, not against it. Notes from an L5 loop.
Senior Frontend loop at Atlassian — feature-flag component, dynamic sprint-dashboard system design, and a values-heavy behavioural round.
Five-round backend loop at Razorpay Bengaluru — DSA, Java/Go fundamentals, an LLD on pub/sub, an HLD on subscriptions over UPI, and a values-heavy hiring-manager round.
Three-round loop for SDE-2 Frontend at Cars24 — JavaScript machine coding, React debugging, and a high-level system design.
IC3 (mid-senior) frontend loop at Apple — OA with 2 coding + 20 MCQs, a useContext code-review round, and a UI machine-coding round.
On-site loop for SDE-2 Frontend at Google Mountain View — heavy on JavaScript fundamentals, accessibility, and a UI system design.
Backend SDE-2 loop at Swiggy — DSA, an LLD round, and a real-business HLD ("design Top-K nearest restaurants"). Heavy on practical scenarios.
SDE-1 Frontend loop at Amazon India — leadership-principle heavy, with two coding rounds and a UI design problem.
Senior frontend loop at PayPal — focused on React fundamentals, a UI machine-coding problem, and a system-design discussion on a checkout flow.
E4 Frontend loop at Meta London — UI coding round, a frontend system design, and a behavioural round centered on impact.
Four-round loop for SDE-2 (L3) Frontend at Flipkart Bangalore — machine coding, React state management, browser internals, and HM round.
Why every Stripe and Razorpay write endpoint accepts an Idempotency-Key header — and how you'd build the storage layer behind it.
How Uber, Swiggy, and DoorDash find the closest driver / restaurant in milliseconds — without ever computing distance to every candidate.
Why React 16 rewrote the reconciler — and what that bought us in concurrent rendering, suspense, and time-slicing.
Capacity estimation, key-generation strategies, cache layout, and analytics — the full bit.ly-style design walk-through.
A senior engineer's playbook for getting promoted — visible work, scope expansion, and writing the promo packet your manager wants to read.
Build a server-rendered React app from scratch with `renderToString`, hydration, and a Node HTTP server — no Next.js.
A walkthrough of how to implement Promises from scratch — covering states, the resolution procedure, and chaining.
Strangler-fig pattern, feature-flag-driven migrations, and how to keep shipping while rewriting the engine mid-flight.
Preparation write-ups on technical interview loops and engineering deep dives at well-known companies. They are prepared guides, not first-hand accounts from named candidates. Filter by company, region, difficulty, or topic.
