Stefan Piatkov

Stefan Piatkov

Austin, TX

14,300

Total Points

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Learn more about when and how points are earned.

Skills & Experience

  • Job Title

    Front-End Developer

  • Spoken Languages

    • English
    • Russian

  • Looking for work

    Yes

175 Achievements

  • Achievement

    React Component Patterns

    React Components

    Achieved

    Aug 23, 2019

    React Component Patterns
  • Achievement

    Stateful Components and Lifecycle Methods

    React Components

    Achieved

    Aug 12, 2019

    Stateful Components and Lifecycle Methods
  • Achievement

    Getting the REST You Need 2

    Introduction to REST APIs

    Achieved

    Aug 6, 2019

    Getting the REST You Need 2
  • Achievement

    GET and POST Requests in a Browser

    HTTP Basics

    Achieved

    Aug 5, 2019

    GET and POST Requests in a Browser
  • Achievement

    Introduction to HTTP

    HTTP Basics

    Achieved

    Jul 31, 2019

    Introduction to HTTP
  • Achievement

    Managing State and Data Flow

    React Components

    Achieved

    Jul 22, 2019

    Managing State and Data Flow
  • Achievement

    Build Modular Interfaces with Components

    React Components

    Achieved

    Jul 12, 2019

    Build Modular Interfaces with Components
  • Achievement

    Stateful Components

    React Basics

    Achieved

    Jul 1, 2019

    Stateful Components
  • Achievement

    Introducing Props

    React Basics

    Achieved

    Jun 13, 2019

    Introducing Props
  • Achievement

    Thinking in Components

    React Basics

    Achieved

    Jun 3, 2019

    Thinking in Components
  • Achievement

    First Steps in React

    React Basics

    Achieved

    May 30, 2019

    First Steps in React
  • Achievement

    Getters and Setters

    Object-Oriented JavaScript

    Achieved

    May 16, 2019

    Getters and Setters
  • Achievement

    Working with Classes in JavaScript

    Object-Oriented JavaScript

    Achieved

    May 14, 2019

    Working with Classes in JavaScript
  • Achievement

    Object Basics

    Object-Oriented JavaScript

    Achieved

    May 9, 2019

    Object Basics
  • Achievement

    Introduction to Object-Oriented JavaScript

    Object-Oriented JavaScript

    Achieved

    May 7, 2019

    Introduction to Object-Oriented JavaScript
  • Achievement

    Installing WordPress Locally

    Installing WordPress Locally

    Achieved

    May 6, 2019

    Installing WordPress Locally
  • Achievement

    Chrome DevTools Basics

    Website Optimization

    Achieved

    May 6, 2019

    Chrome DevTools Basics
  • Achievement

    Testing for Accessibility

    Web Accessibility Compliance

    Achieved

    Apr 23, 2019

    Testing for Accessibility
  • Achievement

    Mobile Accessibility

    Web Accessibility Compliance

    Achieved

    Apr 23, 2019

    Mobile Accessibility
  • Achievement

    Accessible UI Patterns

    Web Accessibility Compliance

    Achieved

    Apr 23, 2019

    Accessible UI Patterns
  • Achievement

    Semantic HTML and WAI-ARIA

    Web Accessibility Compliance

    Achieved

    Apr 23, 2019

    Semantic HTML and WAI-ARIA
  • Achievement

    WCAG 2.0 (and Other Standards)

    Web Accessibility Compliance

    Achieved

    Apr 21, 2019

    WCAG 2.0 (and Other Standards)
  • Achievement

    Access for Everybody

    Web Accessibility Compliance

    Achieved

    Apr 20, 2019

    Access for Everybody
  • Achievement

    JavaScript Tools and Workflows

    The Landscape of JavaScript

    Achieved

    Apr 16, 2019

    JavaScript Tools and Workflows
  • Achievement

    JavaScript is Everywhere

    The Landscape of JavaScript

    Achieved

    Apr 16, 2019

    JavaScript is Everywhere
  • Achievement

    Refining the App

    React by Example

    Achieved

    May 22, 2018

    Refining the App
  • Achievement

    Building the Application

    React by Example

    Achieved

    May 18, 2018

    Building the Application
  • Achievement

    Installing Sass and Setting up the Project

    CSS to Sass

    Achieved

    May 16, 2018

    Installing Sass and Setting up the Project
  • Achievement

    Setting up with Create React App

    React by Example

    Achieved

    May 14, 2018

    Setting up with Create React App
  • Achievement

    Captioning Video

    HTML Video and Audio

    Achieved

    May 14, 2018

    Captioning Video
  • Achievement

    Media Basics

    HTML Video and Audio

    Achieved

    May 11, 2018

    Media Basics
  • Achievement

    Improving the Application Code

    DOM Scripting By Example

    Achieved

    May 11, 2018

    Improving the Application Code
  • Achievement

    Editing and Filtering Names

    DOM Scripting By Example

    Achieved

    May 7, 2018

    Editing and Filtering Names
  • Achievement

    Adding and Removing Names

    DOM Scripting By Example

    Achieved

    Apr 20, 2018

    Adding and Removing Names
  • Achievement

    Create Function Using Arrow Syntax

    Getting Started With ES2015

    Achieved

    Apr 17, 2018

    Create Function Using Arrow Syntax
  • Achievement

    Using Template Literals

    Getting Started With ES2015

    Achieved

    Apr 17, 2018

    Using Template Literals
  • Achievement

    Defining Variables With let and const

    Getting Started With ES2015

    Achieved

    Apr 17, 2018

    Defining Variables With let and const
  • Achievement

    Traversing the DOM

    JavaScript and the DOM (Retiring)

    Achieved

    Apr 16, 2018

    Traversing the DOM
  • Achievement

    Responding to User Interaction

    Interacting with the DOM

    Achieved

    Apr 10, 2018

    Responding to User Interaction
  • Achievement

    Making Changes to the DOM

    JavaScript and the DOM (Retiring)

    Achieved

    Apr 9, 2018

    Making Changes to the DOM
  • Achievement

    Getting a Handle on the DOM

    JavaScript and the DOM (Retiring)

    Achieved

    Apr 4, 2018

    Getting a Handle on the DOM
  • Achievement

    The Browser Environment

    JavaScript and the DOM (Retiring)

    Achieved

    Apr 3, 2018

    The Browser Environment
  • Achievement

    Add Reusable Logic to Your Sass

    Sass Basics

    Achieved

    Mar 26, 2018

    Add Reusable Logic to Your Sass
  • Achievement

    Write Smart and Efficient CSS with Sass

    Sass Basics

    Achieved

    Mar 20, 2018

    Write Smart and Efficient CSS with Sass
  • Achievement

    Improve Your Workflow with Sass

    Sass Basics

    Achieved

    Mar 19, 2018

    Improve Your Workflow with Sass
  • Achievement

    Getting Started with Sass

    Sass Basics

    Achieved

    Mar 15, 2018

    Getting Started with Sass
  • Achievement

    Building Forms With Bootstrap

    Bootstrap Basics

    Achieved

    Mar 14, 2018

    Building Forms With Bootstrap
  • Achievement

    Using Bootstrap Components

    Bootstrap Basics

    Achieved

    Mar 13, 2018

    Using Bootstrap Components
  • Achievement

    Responsive Layouts With the Bootstrap Grid

    Bootstrap Basics

    Achieved

    Mar 12, 2018

    Responsive Layouts With the Bootstrap Grid
  • Achievement

    Getting to Know Bootstrap 4

    Bootstrap Basics

    Achieved

    Mar 9, 2018

    Getting to Know Bootstrap 4
  • Achievement

    Exploration

    Web Design Process

    Achieved

    Mar 8, 2018

    Exploration
  • Achievement

    Discovery

    Web Design Process

    Achieved

    Mar 8, 2018

    Discovery
  • Achievement

    Combine and Minify Assets

    Introduction to Front End Performance Optimization

    Achieved

    Feb 27, 2018

    Combine and Minify Assets
  • Achievement

    Optimize Assets

    Introduction to Front End Performance Optimization

    Achieved

    Feb 26, 2018

    Optimize Assets
  • Achievement

    Measuring Performance

    Introduction to Front End Performance Optimization

    Achieved

    Feb 24, 2018

    Measuring Performance
  • Achievement

    Finishing the Game

    Introducing JavaScript

    Achieved

    Feb 23, 2018

    Finishing the Game
  • Achievement

    Introducing JavaScript

    Introducing JavaScript

    Achieved

    Feb 23, 2018

    Introducing JavaScript
  • Achievement

    Going Further with HTML

    HTML Basics

    Achieved

    Feb 21, 2018

    Going Further with HTML
  • Achievement

    Images, Text and Links

    HTML Basics

    Achieved

    Feb 21, 2018

    Images, Text and Links
  • Achievement

    Structuring Your Content

    HTML Basics

    Achieved

    Feb 21, 2018

    Structuring Your Content
  • Achievement

    Getting Started With HTML

    HTML Basics

    Achieved

    Feb 21, 2018

    Getting Started With HTML
  • Achievement

    Data Binding with D3

    D3.js

    Achieved

    Sep 21, 2017

    Data Binding with D3
  • Achievement

    Selections with D3

    D3.js

    Achieved

    Sep 1, 2017

    Selections with D3
  • Achievement

    What Is WordPress?

    What Is WordPress?

    Achieved

    May 27, 2017

    What Is WordPress?
  • Achievement

    Stateful Components

    React Basics (retired)

    Achieved

    May 25, 2017

    Stateful Components
  • Achievement

    Thinking in Components

    React Basics (retired)

    Achieved

    May 18, 2017

    Thinking in Components
  • Achievement

    First Steps in React

    React Basics (retired)

    Achieved

    May 15, 2017

    First Steps in React
  • Achievement

    Planning for Performance

    Introduction to Front End Performance Optimization

    Achieved

    May 10, 2017

    Planning for Performance
  • Achievement

    Introduction to Node.js

    Node.js Basics 2017

    Achieved

    May 8, 2017

    Introduction to Node.js
  • Achievement

    Getting Started with Android

    Build a Simple Android App

    Achieved

    May 4, 2017

    Getting Started with Android
  • Achievement

    Perfecting the Prototype

    Java Basics

    Achieved

    May 3, 2017

    Perfecting the Prototype
  • Achievement

    Using your New Tools

    Java Basics

    Achieved

    May 2, 2017

    Using your New Tools
  • Achievement

    Getting Started with Java

    Java Basics

    Achieved

    May 2, 2017

    Getting Started with Java
  • Achievement

    Rails Resource Index

    Rails Routes and Resources

    Achieved

    Apr 9, 2017

    Rails Resource Index
  • Achievement

    Adding a Model Attribute

    Ruby on Rails 5 Basics

    Achieved

    Mar 28, 2017

    Adding a Model Attribute
  • Achievement

    Using the Rails Console

    Ruby on Rails 5 Basics

    Achieved

    Mar 27, 2017

    Using the Rails Console
  • Achievement

    Handling Rails Requests

    Ruby on Rails 5 Basics

    Achieved

    Mar 27, 2017

    Handling Rails Requests
  • Achievement

    Creating Rails Apps

    Ruby on Rails 5 Basics

    Achieved

    Mar 27, 2017

    Creating Rails Apps
  • Achievement

    Custom Media Players

    HTML Video and Audio (Retired)

    Achieved

    Mar 1, 2017

    Custom Media Players
  • Achievement

    Build a Bank Account Class

    Ruby Objects and Classes

    Achieved

    Feb 27, 2017

    Build a Bank Account Class
  • Achievement

    Ruby Iteration

    Ruby Loops

    Achieved

    Feb 25, 2017

    Ruby Iteration
  • Achievement

    Ruby Variables and Methods

    Ruby Objects and Classes

    Achieved

    Feb 25, 2017

    Ruby Variables and Methods
  • Achievement

    Ruby Loops

    Ruby Loops

    Achieved

    Feb 21, 2017

    Ruby Loops
  • Achievement

    Ruby Objects and Classes

    Ruby Objects and Classes

    Achieved

    Feb 21, 2017

    Ruby Objects and Classes
  • Achievement

    Build a Grocery List Program

    Ruby Collections

    Achieved

    Feb 20, 2017

    Build a Grocery List Program
  • Achievement

    Ruby Hashes

    Ruby Collections

    Achieved

    Feb 19, 2017

    Ruby Hashes
  • Achievement

    Ruby Arrays

    Ruby Collections

    Achieved

    Feb 18, 2017

    Ruby Arrays
  • Achievement

    Ruby Logical Operators

    Ruby Operators and Control Structures

    Achieved

    Feb 18, 2017

    Ruby Logical Operators
  • Achievement

    Ruby Control Structures

    Ruby Operators and Control Structures

    Achieved

    Feb 18, 2017

    Ruby Control Structures
  • Achievement

    Ruby Operators

    Ruby Operators and Control Structures

    Achieved

    Feb 16, 2017

    Ruby Operators
  • Achievement

    Ruby Methods

    Ruby Basics (Retired)

    Achieved

    Feb 10, 2017

    Ruby Methods
  • Achievement

    Ruby Numbers (Ruby Basics)

    Ruby Basics (Retired)

    Achieved

    Feb 9, 2017

    Ruby Numbers (Ruby Basics)
  • Achievement

    Ruby Strings (Ruby Basics)

    Ruby Basics (Retired)

    Achieved

    Feb 9, 2017

    Ruby Strings (Ruby Basics)
  • Achievement

    How Ruby Works

    Ruby Basics (Retired)

    Achieved

    Feb 8, 2017

    How Ruby Works
  • Achievement

    AJAX and APIs

    AJAX Basics (retiring)

    Achieved

    Feb 8, 2017

    AJAX and APIs
  • Achievement

    jQuery and AJAX

    AJAX Basics (retiring)

    Achieved

    Feb 7, 2017

    jQuery and AJAX
  • Achievement

    Programming AJAX

    AJAX Basics (retiring)

    Achieved

    Feb 1, 2017

    Programming AJAX
  • Achievement

    AJAX Concepts

    AJAX Basics (retiring)

    Achieved

    Jan 30, 2017

    AJAX Concepts
  • Achievement

    Traversing and Manipulating the DOM with JavaScript

    Interactive Web Pages with JavaScript

    Achieved

    Jan 26, 2017

    Traversing and Manipulating the DOM with JavaScript
  • Achievement

    Selecting Elements and Adding Events with JavaScript

    Interactive Web Pages with JavaScript

    Achieved

    Jan 24, 2017

    Selecting Elements and Adding Events with JavaScript
  • Achievement

    JavaScript and the DOM

    Interactive Web Pages with JavaScript

    Achieved

    Jan 24, 2017

    JavaScript and the DOM
  • Achievement

    Building Forms with Bootstrap

    Bootstrap 4 Basics (Retired)

    Achieved

    Jan 23, 2017

    Building Forms with Bootstrap
  • Achievement

    Using Bootstrap Components

    Bootstrap 4 Basics (Retired)

    Achieved

    Jan 23, 2017

    Using Bootstrap Components
  • Achievement

    Responsive Layouts with the Bootstrap Grid

    Bootstrap 4 Basics (Retired)

    Achieved

    Jan 20, 2017

    Responsive Layouts with the Bootstrap Grid
  • Achievement

    Getting to Know Bootstrap 4

    Bootstrap 4 Basics (Retired)

    Achieved

    Jan 16, 2017

    Getting to Know Bootstrap 4
  • Achievement

    Creating a Simple Drawing Application

    jQuery Basics (2014)

    Achieved

    Jan 16, 2017

    Creating a Simple Drawing Application
  • Achievement

    Creating a Password Confirmation Form

    jQuery Basics (2014)

    Achieved

    Jan 16, 2017

    Creating a Password Confirmation Form
  • Achievement

    Creating a Mobile Drop Down Menu

    jQuery Basics (2014)

    Achieved

    Jan 12, 2017

    Creating a Mobile Drop Down Menu
  • Achievement

    Creating a Simple Lightbox

    jQuery Basics (2014)

    Achieved

    Jan 6, 2017

    Creating a Simple Lightbox
  • Achievement

    Creating a Spoiler Revealer

    jQuery Basics (2014)

    Achieved

    Jan 4, 2017

    Creating a Spoiler Revealer
  • Achievement

    Introduction to jQuery

    jQuery Basics (2014)

    Achieved

    Jan 2, 2017

    Introduction to jQuery
  • Achievement

    Advanced Selectors

    CSS Selectors

    Achieved

    Jan 2, 2017

    Advanced Selectors
  • Achievement

    Going Further with Attribute Selectors and Pseudo-Classes

    CSS Selectors

    Achieved

    Dec 30, 2016

    Going Further with Attribute Selectors and Pseudo-Classes
  • Achievement

    Selectors - Beyond the Basics

    CSS Selectors

    Achieved

    Dec 28, 2016

    Selectors - Beyond the Basics
  • Achievement

    JavaScript Objects

    JavaScript Loops, Arrays and Objects

    Achieved

    Dec 27, 2016

    JavaScript Objects
  • Achievement

    JavaScript Arrays

    JavaScript Loops, Arrays and Objects

    Achieved

    Dec 26, 2016

    JavaScript Arrays
  • Achievement

    JavaScript Loops

    JavaScript Loops, Arrays and Objects

    Achieved

    Dec 22, 2016

    JavaScript Loops
  • Achievement

    Building a Layout with Flexbox

    CSS Flexbox Layout

    Achieved

    Dec 21, 2016

    Building a Layout with Flexbox
  • Achievement

    Flexbox Properties

    CSS Flexbox Layout

    Achieved

    Dec 20, 2016

    Flexbox Properties
  • Achievement

    Understanding Flexbox

    CSS Flexbox Layout

    Achieved

    Dec 19, 2016

    Understanding Flexbox
  • Achievement

    Responsive Patterns

    Responsive Layouts

    Achieved

    Dec 19, 2016

    Responsive Patterns
  • Achievement

    Media Queries

    Responsive Layouts

    Achieved

    Dec 19, 2016

    Media Queries
  • Achievement

    Responsive Theory

    Responsive Layouts

    Achieved

    Dec 19, 2016

    Responsive Theory
  • Achievement

    Positioning Page Content

    CSS Layout Basics

    Achieved

    Dec 19, 2016

    Positioning Page Content
  • Achievement

    CSS Layout Project

    CSS Layout Basics

    Achieved

    Dec 18, 2016

    CSS Layout Project
  • Achievement

    Page Layout with the Float Property

    CSS Layout Basics

    Achieved

    Dec 18, 2016

    Page Layout with the Float Property
  • Achievement

    Controlling Layout with CSS Display Modes

    CSS Layout Basics

    Achieved

    Dec 15, 2016

    Controlling Layout with CSS Display Modes
  • Achievement

    Getting Started with CSS Layout

    CSS Layout Basics

    Achieved

    Dec 15, 2016

    Getting Started with CSS Layout
  • Achievement

    JavaScript Functions

    JavaScript Basics (Retired)

    Achieved

    Dec 14, 2016

    JavaScript Functions
  • Achievement

    JavaScript Conditional Statements

    JavaScript Basics (Retired)

    Achieved

    Dec 13, 2016

    JavaScript Conditional Statements
  • Achievement

    JavaScript Numbers

    JavaScript Basics (Retired)

    Achieved

    Dec 13, 2016

    JavaScript Numbers
  • Achievement

    JavaScript Variables

    JavaScript Basics (Retired)

    Achieved

    Dec 12, 2016

    JavaScript Variables
  • Achievement

    Introducing JavaScript

    JavaScript Basics (Retired)

    Achieved

    Dec 12, 2016

    Introducing JavaScript
  • Achievement

    Captioning Video

    HTML Video and Audio (Retired)

    Achieved

    Dec 8, 2016

    Captioning Video
  • Achievement

    Media Basics

    HTML Video and Audio (Retired)

    Achieved

    Dec 8, 2016

    Media Basics
  • Achievement

    Web Apps

    Accessibility

    Achieved

    Oct 9, 2016

    Web Apps
  • Achievement

    Websites

    Accessibility

    Achieved

    Oct 9, 2016

    Websites
  • Achievement

    Introduction

    Accessibility

    Achieved

    Oct 9, 2016

    Introduction
  • Achievement

    Adding a New Web Page

    Introduction to HTML and CSS

    Achieved

    Oct 8, 2016

    Adding a New Web Page
  • Achievement

    Make It Beautiful with CSS

    Introduction to HTML and CSS

    Achieved

    Oct 7, 2016

    Make It Beautiful with CSS
  • Achievement

    HTML: The Structural Foundation of Web Pages and Applications

    Introduction to HTML and CSS

    Achieved

    Oct 6, 2016

    HTML: The Structural Foundation of Web Pages and Applications
  • Achievement

    Getting Familiar with HTML and CSS

    Introduction to HTML and CSS

    Achieved

    Oct 5, 2016

    Getting Familiar with HTML and CSS
  • Achievement

    Forms

    HTML

    Achieved

    Oct 4, 2016

    Forms
  • Achievement

    Tables

    HTML

    Achieved

    Oct 4, 2016

    Tables
  • Achievement

    Objects

    HTML

    Achieved

    Oct 3, 2016

    Objects
  • Achievement

    Links

    HTML

    Achieved

    Oct 1, 2016

    Links
  • Achievement

    Lists

    HTML

    Achieved

    Oct 1, 2016

    Lists
  • Achievement

    Text

    HTML

    Achieved

    Sep 30, 2016

    Text
  • Achievement

    Introduction

    HTML

    Achieved

    Sep 29, 2016

    Introduction
  • Achievement

    Structuring Tables

    HTML Tables

    Achieved

    Sep 28, 2016

    Structuring Tables
  • Achievement

    Table Basics

    HTML Tables

    Achieved

    Sep 28, 2016

    Table Basics
  • Achievement

    Choosing Options

    HTML Forms

    Achieved

    Sep 28, 2016

    Choosing Options
  • Achievement

    Organizing Forms

    HTML Forms

    Achieved

    Sep 27, 2016

    Organizing Forms
  • Achievement

    Form Basics

    HTML Forms

    Achieved

    Sep 27, 2016

    Form Basics
  • Achievement

    Fundamental Concepts

    CSS Basics (2014)

    Achieved

    Sep 26, 2016

    Fundamental Concepts
  • Achievement

    Designing with the Latest Features

    CSS Basics (2014)

    Achieved

    Sep 24, 2016

    Designing with the Latest Features
  • Achievement

    Basic Layout

    CSS Basics (2014)

    Achieved

    Sep 20, 2016

    Basic Layout
  • Achievement

    The Box Model

    CSS Basics (2014)

    Achieved

    Sep 18, 2016

    The Box Model
  • Achievement

    Understanding Values and Units

    CSS Basics (2014)

    Achieved

    Sep 16, 2016

    Understanding Values and Units
  • Achievement

    Basic Selectors

    CSS Basics (2014)

    Achieved

    Sep 14, 2016

    Basic Selectors
  • Achievement

    Getting Started with CSS

    CSS Basics (2014)

    Achieved

    Sep 11, 2016

    Getting Started with CSS
  • Achievement

    Debugging HTML and CSS Problems

    How to Make a Website

    Achieved

    Sep 9, 2016

    Debugging HTML and CSS Problems
  • Achievement

    Sharing a Website

    How to Make a Website

    Achieved

    Sep 8, 2016

    Sharing a Website
  • Achievement

    Responsive Web Design and Testing

    How to Make a Website

    Achieved

    Sep 8, 2016

    Responsive Web Design and Testing
  • Achievement

    Adding Pages to a Website

    How to Make a Website

    Achieved

    Sep 7, 2016

    Adding Pages to a Website
  • Achievement

    Styling Web Pages and Navigation

    How to Make a Website

    Achieved

    Sep 7, 2016

    Styling Web Pages and Navigation
  • Achievement

    Customizing Colors and Fonts

    How to Make a Website

    Achieved

    Sep 7, 2016

    Customizing Colors and Fonts
  • Achievement

    CSS: Cascading Style Sheets

    How to Make a Website

    Achieved

    Sep 5, 2016

    CSS: Cascading Style Sheets
  • Achievement

    Creating HTML Content

    How to Make a Website

    Achieved

    Sep 5, 2016

    Creating HTML Content
  • Achievement

    HTML First

    How to Make a Website

    Achieved

    Sep 4, 2016

    HTML First
  • Achievement

    Beginning HTML and CSS

    How to Make a Website

    Achieved

    Sep 4, 2016

    Beginning HTML and CSS
  • Achievement

    The Internet

    How the Internet Works

    Achieved

    Sep 4, 2016

    The Internet
  • Achievement

    Computer Languages

    Computer Basics

    Achieved

    Sep 3, 2016

    Computer Languages
  • Achievement

    Computer Basics

    Computer Basics

    Achieved

    Sep 2, 2016

    Computer Basics
  • Achievement

    Newbie

    Achieved

    Sep 2, 2016

    Newbie