What's New?

January 2026

• Tata Digital interview roadmap

  New

  Roadmap · 21 Jan 2026

  Eoin

• 28 new coding questions28 questions

  New

  .NET Fundamentals · Coding Question · 21 Jan 2026

  Eoin

• Google Maps — Data Model

  New

  Google Maps · Whiteboard · 21 Jan 2026

  Eoin

• Autocomplete System (Google Search)

  New

  System Design · 21 Jan 2026

  Eoin

• Patreon's Interview Process (2026)

  New

  Article · 20 Jan 2026

  Eoin

• Metrics Monitoring and Alerting (Datadog, Prometheus) — Deep Dive 2: Real-Time Alerting Engine

  New

  Metrics Monitoring & Alerting · Whiteboard · 20 Jan 2026

  Eoin

• Tech Mahindra interview roadmap

  New

  Roadmap · 20 Jan 2026

  Eoin

• 72 new coding questions72 questions

  New

  Ruby · Coding Question · 20 Jan 2026

  Eoin

• Top-K Leaderboard — Deep Dive - Scaling the Leaderboard

  New

  Top K Leaderboard · Whiteboard · 19 Jan 2026

  Eoin

• Onboarding flow

  New

  Feature · 19 Jan 2026

  Shipped on 2026-01-18.

  Eoin

• Teladoc interview roadmap

  New

  Roadmap · 19 Jan 2026

  Eoin

• Custom Roadmap Builder

  New

  Feature · 19 Jan 2026

  Shipped on 2026-01-18.

  Eoin

• Paytm's Interview Process (2026)

  New

  Article · 19 Jan 2026

  Eoin

• 113 new coding questions113 questions

  New

  Python · Coding Question · 19 Jan 2026

  Eoin

• Databricks interview roadmap

  New

  Roadmap · 19 Jan 2026

  Eoin

• Music Streaming Service (Spotify) — Deep Dive 2: ML Recommendation Pipeline

  New

  Music Streaming Service · Whiteboard · 16 Jan 2026

  Eoin

• Peloton's Interview Process (2026)

  New

  Article · 16 Jan 2026

  Eoin

• 61 new coding questions61 questions

  New

  ASP.NET Core · Coding Question · 16 Jan 2026

  Eoin

• Ticket Booking System (Ticketmaster) — API Design

  New

  Ticket Booking System · Whiteboard · 16 Jan 2026

  Eoin

• Tempus interview roadmap

  New

  Roadmap · 16 Jan 2026

  Eoin