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Free module

Software engineering at work

How software is built at work: reading a codebase, debugging, code review, writing tests, APIs and the basics of system design.

6 lessons285 min lesson

The lessons

Each lesson is free to read in full. Create a free account to run its commands in a live lab and to sit its quizzes and tasks.

  1. 1

    Finding your way in a codebase

    I can find where a feature lives in someone else's code.

    Read the lesson

  2. 2

    Writing a test for a function

    I can write a test that checks a function.

    Read the lesson

  3. 3

    Finding a bug step by step

    I can find a bug by checking one thing at a time.

    Read the lesson

  4. 4

    Reviewing a small change

    I can review a small change and say what to improve.

    Read the lesson

  5. 5

    What a backend does with a request

    I can say what a backend does with a request.

    Read the lesson

  6. 6

    How the parts of a web app fit

    I can sketch how the parts of a simple web app fit together.

    Read the lesson

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