For engineering leaders

Training developers finish.

Books go unread. Videos get skipped. Interactive exercises get completed. Give your team a training program built around solving problems, not watching content.

Every lesson is an exercise

Developers write real code and run real tests in every lesson. Active practice drives higher completion rates than passive content.

Covers the full stack

Dart, Flutter, SOLID, DRY, and Kubernetes. One platform for language fluency, architecture principles, and infrastructure.

Self-paced, structured

Each developer moves at their speed through a structured progression. No scheduling overhead, no waiting for the next cohort.

Built by GDEs with 8+ years in production

Training designed by engineers who ship, for engineers who ship.

Write code from lesson one

Every lesson is an exercise you solve in your browser. Real code, real tests, real feedback.

Write a greeting function

main.ts

function greet(name: string) {

return `Hello, ${name}!`

}

Structured progression

Each concept builds on the last. You always know what to learn next.

Multiple exercise types

Quizzes, fill-in-the-blank, matching, and code keep every lesson engaging.

Instant feedback

Submit your answer and see test results in milliseconds.

Learn by doing

Solve exercises in your browser from the first lesson.

Join over 5,000 learners

Flutter Zero to Mastery

Explore our courses

Pick a course and solve your first exercise.

Dart Course

An interactive Dart course where you code, test, and build apps directly in your browser.

Flutter Course

An interactive Flutter course where you code, test, and build apps directly in your browser.

S.O.L.I.D. Course

Learn the principles of how software should be structured, so you can guide AI to build better systems.

D.R.Y. Course

Learn to identify and eliminate code duplication, making your codebase cleaner and easier to maintain.

System Design Course

Learn how APIs, databases, caching, and load balancing fit together to build scalable systems.

Interactive courses

Every lesson is an exercise with instant feedback.

Start your team's training program

Interactive courses across Dart, Flutter, SOLID, DRY, and Kubernetes.