Flutter Developer Roadmap

🥚

Basic

Dart

This is where you start your first steps. Learn the basics of syntax, structures, conditions and loops. It's a good idea to try starting with console applications.

Try to solve easy puzzles on the leetcode.

Data types and variables
Functions
Classes
Control flow statement
Primitive structures, literals (e.g. num, int, double, String, List)
print
A tour of the Dart language
Language cheatsheet

Flutter

Launch your first application. First introduction to widgets. You should be able to create a simple application with static screens.

Ideally, you should learn how to navigate between the two screens in a simple way.

runApp, MaterialApp, Scaffold
Align, Container, Flex, Expanded, Spacer, ListView, Text
Easy navigation between two screens
Difference between Stateless and Stateful Widgets

Other

Should be able to install IDE, dart and flutter. Set up and prepare your own environment for work. Learn the basics of version control. It is highly desirable to create an account on GitHub and upload everything you do to public repositories.

At this stage, you are prohibited from using third-party packages!

IDE Android Studio or Visual Studio Code or IDEA
Version control basics (e.g. git, status, push, pull, commit)
Hot reload and hot restart
Console dart
GitHub or GitLab
Flutter CLI
DartPad

🐣

Beginner

Dart

Learn the basics of object-oriented programming. Get to know asynchronous programming and async-await. It is highly desirable to reinforce practical knowledge with OOP theory.

var, final, const
Basic OOP (extends, implements, static)
Popular structures & classes (e.g. Map, DateTime)
Asynchronous programming (e.g. futures, async, await)
dart:math
Encapsulation, Polymorphism, Inheritance, Abstraction
Getters and setters
Operators
Immutability, side effects

Flutter

Managing the widget's local state with the setState method. You should continue to get acquainted with widgets, as well as learn how to interact with the user through buttons and gestures. Display modal routes.

Stateful state and updating with setState method
Padding, SizedBox, ColoredBox, DecoratedBox
SafeArea, GridView, Images, Placeholder
Builder, FutureBuilder, StatefulBuilder
Gestures, Buttons, Dialogs, BottomSheet
ValueNotifier, ChangeNotifier, Listenable
Material Widgets
Assets

Other

You must learn to interact with git through your IDE's interface. Simple HTTP requests (get and post). Converting objects to and from a string. From now on, you should definitely improve debugging, bug tracking with stack trace and breakpoints.

If you decide to use third-party packages from the pub - be warned, you should think twice, the pub is full of downright bad and deceitful solutions!

Using the version control system through the IDE interface
HTTP request, main status codes & headers
JSON and serialization
Debugger and breakpoints
Third-party packages
pubspec.yaml
Widget Inspector
Differentiate between ephemeral state and app state
Code Style

🐥

Intermediate

Dart

Advance in the study of object-oriented programming. Understanding null safety and the dart type system. Familiarize yourself with the core libraries of Dart. Should start getting used to reactive programming.

Intermediate OOP (Interface, Abstract, Implementation)
Understanding null safety
Asynchronous programming: Streams
Error handling
dart:async, dart:collection, dart:convert
The Dart type system, Type inference, Never, Object, Null, dynamic
Error vs Exception
Visibility
Dart Define
Use code-generation
Pure functions
Closures
Assert

Flutter

Trying to build an interface for different layouts. Learn how to rebuild the interface depending on various changes. Text input from the keyboard by the user. Building widgets in several layers. The simplest persistence of state on the client between sessions.

Creating responsive and adaptive apps
OrientationBuilder, LayoutBuilder, StreamBuilder, AnimatedBuilder, ValueListenableBuilder
EditableText, TextField, TextEditingController, InputDecorator
Stack & Positioned
ScaffoldMessenger, displaying non-blocking messages to the user
Local and Global keys
Lifting state up
Key-value storage (e.g. shared_preferences)
Core inherited widgets: MediaQuery, Theme
Imperative navigation (Route, push, pop)
Cupertino Widgets
Implicit animations
Skeleton & shimmers
Blur hash

Other

Advance in the study of theory and debugging. Improve your tools and workflows.

Core design patterns (Singleton, Observer, State)
Layout and Network Inspector
Linter rules, analyzer
Markdown
IDE extensions
Leaving issues for projects
RESTful
GraphQL
Flutter Version Manager

🕊️

Experienced

Dart

At this stage, you should know all the basic structures and language features. The language tour should be intuitive and relevant to practice.

Advanced structures (e.g. Set, SplayTreeMap, Linked List, UnmodifiableListView, Queue)
Generics
Extension methods
package:async, package:collection, package:convert
Asynchronous generators
runZonedGuarded
Compute
Ternary, Spread, Cascade operators
Callable
Literal and canonical objects
Meta and annotations
Business Logic Component

Flutter

At this stage, you should have no problem with most layouts. Responsive vs adaptive, creating responsive and adaptive apps. You know how to build a pixel-perfect interface.

Material, Hero, Slivers, Chip, IndexedStack, DropdownButton, RichText, Table
Understanding constraints
Creating responsive and adaptive layouts
Elements tree
Permissions
Image & file picker
SelectionArea
StatelessElement, StatefulElement, ProxyElement
Explicit animations
What is a BuildContext
Inherited Widget

Other

Expand your horizons. Regularly reflect on problems, bugs, code smells. Close knowledge gaps.

Semantic Versioning
Multitier architecture
Service locator
Contributing to projects and packages
JSON Web Tokens
JIRA, Confluence, Slack, etc
Declarative vs Imperative
Long polling
Unit & Widget tests
Avoid Premature Optimization
Creational / Structural / Behavioral Design Patterns
KISS, DRY, YAGNI
Creating your own library
Analytics
Crash Logging
WebSocket
Geolocation
build.yaml
Customizing static analysis, analysis_options.yaml
Human Interface Guideline
Material Design
Material You

🦉

Advanced

Dart

Now you should not have any problems with either object-oriented or reactive programming.

Mixins, Diamond problem.
Pattern matching
All main classes and advanced structures from SDK (e.g. Expando, Stopwatch)
ReactiveX, debounce, throttle
dart:io
Mutex
Typedefs
Concurrency in Dart, dart:isolate
Interceptors and middlewares
Dealing with stack trace

Flutter

Get familiar with declarative navigation, learn how to build a navigation stack using a list of Pages. Optimize the widgets from unnecessary rebuilds. Starting to understand the inner workings of the flutter framework. You can build something that is not originally included in the framework.

Declarative navigator (Navigator 2.0 Pages API, without Router)
RepaintBoundary, Offstage, Visibility, Overlay, Flow, AbsorbPointer
WidgetBindingObserver, WidgetsBinding
Flutter Internals
Custom Painter
Flutter architectural overview
TextInputFormatter
Clipboard
Staggered animations
Deep Links and App Links
Inherited Model, Inherited Notifier
Method channels
Web View & Custom Tabs

Other

Expand your theoretical knowledge and improve the practices you already have. Learn how to write unit tests and analyze coverage.

Gang of Four Design Patterns
SOLID
Time complexity
Coverage, lcov
Dart VM and Dart Runtime, Ahead Of Time vs Just In Time
Widgets structure, Elements tree, Render tree, Scene
Bindings
BoxProtocol, Sliver Protocol
XML, DOM
Notifications bubbling up
Maintain a project
Bash
Instrumental tests
Native Icons & Splash screens
Performance & measurement profiling
Kotlin or Java basics
Swift or Object C basics
JavaScript basics
SQLite
Firebase

🦢

Senior

Dart

By the time you get to this stage, you should know pretty much everything a developer needs to know to solve day-to-day tasks. You should also be aware of isolates and event loops.

Tree structure
Stream transformers
Event loop
Microtasks
Conditional import
Synchronous generators
package: crypto
Write your own code-generation
Benchmark harness

Flutter

You should be able to create absolutely any regular CRUD application. When interacting with a native, there should be no big problems.

Push notifications
Framework Architecture and Inside Flutter
Platform-specific behaviors and adaptations
Localizations & internationalizing, intl
Router & Advanced navigation
ThemeExtension
Social authentication
Maps
Dealing with camera
Typography
Iconography
Focus system
Gesture system
package:flutter/animation.dart, package:flutter/foundation.dart
Action, Intent, Shortcut
Scrollable, ViewPort
Rive, Lottie
Creating icon packs through fonts
Haptic feedback
Tooltips

Other

Coverage of the application and packages with tests. Distribution of the application on the sites you need. e.g. App Store, Google Play, Xiaomi Market, AppGallery, Samsung Galaxy Store, Microsoft Store, Snap Store, Firebase Hosting.

App deployment and distribution
Migrations between application and database versions
Performance, CPU, Memory, Battery monitoring
App size tools
Transactions
Fake & mocks
OAuth 2
Test-driven development
Common Front-end Engine
The Open Systems Interconnection model (OSI)
Dart doc
Garbage collector
VS Code or AS/IDEA snippets
Cross-Origin Resource Sharing
Worker manager, Foreground service
Gradle & CocoaPods
Git hooks
Big Design Up Front
Advanced SQL, e.g. joins, unions, keys, constraints, vacuum
GRASP
SKIA
Flutter threads: UI, Platform, IO, Raster
Deferred components

🦅

Expert

Dart

Advance in the internal structure of the language and tooling depending on your tasks. Create something that the community lacks. Continue expanding Dart to new platforms.

dart:developer
Zones
TCP & UDP Sockets
JS Iterops: dart:html, dart:js, dart:js_util, package:js
Web & Service workers
Foreign Function Interface, dart:ffi
Server-side dart
gRPC

Flutter

If you are here, then there should be no impossible tasks. It's a good idea to start contributing to the SDK, solving serious problems that arise.

CompositedTransformFollower, Draggable, Intrinsic, KeyboardListener, ListWheelViewport, ImplicitlyAnimatedWidget, InteractiveViewer, KeepAlive
DisplayFeature
UiKitView, AndroidView
dart:ui, SingletonFlutterWindow, FlutterView, SceneBuilder, PluginUtilities, IsolateNameServer
Accessibility & Semantics
Fragment Shaders
package:flutter/physics.dart, package:flutter/rendering.dart, package:flutter/semantics.dart, package:flutter/scheduler.dart, package:flutter/services.dart
Progressive Web App
Licenses

Other

If you are here, you do not need my advice, just continue your education in related expertise.

CAP theorem, ACID
GitHub Actions or GitLab CI
Reduce shader animation jank on mobile
Golden tests
Graph structure & Dijkstra's algorithm
Machine Learning, Machine Vision, Augmented Reality
Other platforms
Docker, Docker registry
Grafana
SonarQube
Fastlane
Cloud providers
Artifactory, CI Cache
WebAssembly
Shelf & Functions Framework