Domains

Every concept lives in one domain and topic, whichever tracks use it.

• Programming Fundamentals

  The building blocks every program is made of, in any language.

  8 topics ·197 concepts

• Engineering Craft

  The everyday skills of the job: Git, reviews, debugging, testing and writing code others can maintain.

  11 topics ·321 concepts

• Computer Science

  Data structures, algorithms and how computers actually run your code.

  6 topics ·153 concepts

• Web & Networking

  How data gets from one machine to another: networks, HTTP, TLS, APIs and browsers.

  6 topics ·146 concepts

• Frontend Development

  Building what users see and touch: HTML, CSS, JavaScript, frameworks, performance and accessibility.

  10 topics ·242 concepts

• Backend Development

  Servers, APIs, databases, caches and queues: everything behind the interface.

  14 topics ·324 concepts

• Architecture & System Design

  How systems are structured, scaled and kept running, and the trade-offs behind each choice.

  8 topics ·192 concepts

• Security

  Keeping the wrong people out, the right people in, and the data safe in between.

  5 topics ·139 concepts

• Infrastructure & Operations

  Where code runs and how it gets there: Linux, containers, cloud, CI/CD, observability and incidents.

  9 topics ·206 concepts

• Data Engineering

  Collecting, moving, storing and shaping data so the rest of the company can trust and use it.

  14 topics ·211 concepts

• Data Analysis

  Turning data into answers: statistics, visualization, experiments and the judgements that make a number worth acting on.

  6 topics ·115 concepts

• AI & Data

  What every software engineer should know about data pipelines, machine learning and building with LLMs.

  3 topics ·49 concepts

• Collaboration & Process

  How teams plan, estimate, communicate and decide what to build.

  4 topics ·86 concepts

• Career & Leadership

  Growing as an engineer, from your first job to leading across an organization.

  3 topics ·79 concepts