Hossam Khalifa

Hossam Khalifa

Cairo, Egypt
Open to Work

Living the dream !!

17,200

Total Points

Points are earned whenever you take an important action on Treehouse.
Learn more about when and how points are earned.

Skills & Experience

  • Company

    Pineapple, Inc.

  • Job Title

    Web Developer

  • Spoken Languages

    • Arabic
    • English
    • German
    • (French)

  • Awards

    • Gold Water polo medal
    • Silver Water polo medal
    • 3 Bronze Water polo medals
    • 3D Academy best team leader

173 Achievements

  • Achievement

    Using your New Tools

    Java Basics

    Achieved

    Jul 11, 2016

    Using your New Tools
  • Achievement

    Getting Started with Java

    Java Basics

    Achieved

    Jun 28, 2016

    Getting Started with Java
  • Achievement

    Coding the Fun Facts

    Build a Simple Android App (2014)

    Achieved

    Jun 26, 2016

    Coding the Fun Facts
  • Achievement

    Basic Android Programming

    Build a Simple Android App (2014)

    Achieved

    Jun 25, 2016

    Basic Android Programming
  • Achievement

    Getting Started with Android

    Build a Simple Android App (2014)

    Achieved

    Jun 25, 2016

    Getting Started with Android
  • Achievement

    Creating the Initial Screen Layout

    Build a Simple Android App (2014)

    Achieved

    Jun 24, 2016

    Creating the Initial Screen Layout
  • Achievement

    Introduction to Video Games

    How to Make a Video Game

    Achieved

    Jan 25, 2016

    Introduction to Video Games
  • Achievement

    Swift Dictionaries

    Swift 2.0 Collections and Control Flow

    Achieved

    Jan 21, 2016

    Swift Dictionaries
  • Achievement

    Introduction to Collections

    Swift 2.0 Collections and Control Flow

    Achieved

    Jan 20, 2016

    Introduction to Collections
  • Achievement

    Ruby Core Modules

    Ruby Modules

    Achieved

    Nov 29, 2015

    Ruby Core Modules
  • Achievement

    Swift Operators

    Swift 2.0 Basics

    Achieved

    Nov 26, 2015

    Swift Operators
  • Achievement

    Ruby Module Basics

    Ruby Modules

    Achieved

    Nov 24, 2015

    Ruby Module Basics
  • Achievement

    Swift Types

    Swift 2.0 Basics

    Achieved

    Nov 24, 2015

    Swift Types
  • Achievement

    An Introduction to Swift Programming

    Swift 2.0 Basics

    Achieved

    Nov 24, 2015

    An Introduction to Swift Programming
  • Achievement

    Creating a Wireframe

    Adobe Illustrator for Web Design

    Achieved

    Nov 20, 2015

    Creating a Wireframe
  • Achievement

    Introducing Adobe Illustrator

    Adobe Illustrator for Web Design

    Achieved

    Nov 20, 2015

    Introducing Adobe Illustrator
  • Achievement

    Introduction to ActiveRecord

    ActiveRecord Basics

    Achieved

    Oct 25, 2015

    Introduction to ActiveRecord
  • Achievement

    Scrum Artifacts

    Scrum Basics

    Achieved

    Oct 24, 2015

    Scrum Artifacts
  • Achievement

    Scrum Events

    Scrum Basics

    Achieved

    Oct 24, 2015

    Scrum Events
  • Achievement

    Introducing Scrum

    Scrum Basics

    Achieved

    Oct 23, 2015

    Introducing Scrum
  • Achievement

    What is Agile?

    Scrum Basics

    Achieved

    Oct 23, 2015

    What is Agile?
  • Achievement

    Securing and Maintaining a MySQL Database

    Database Foundations

    Achieved

    Oct 21, 2015

    Securing and Maintaining a MySQL Database
  • Achievement

    SQL Calculating, Aggregating and Other Functions

    Database Foundations

    Achieved

    Oct 21, 2015

    SQL Calculating, Aggregating and Other Functions
  • Achievement

    Joining Relational Data Between Tables in SQL

    Database Foundations

    Achieved

    Oct 18, 2015

    Joining Relational Data Between Tables in SQL
  • Achievement

    Manipulating Schema with SQL

    Database Foundations

    Achieved

    Oct 18, 2015

    Manipulating Schema with SQL
  • Achievement

    Creating Tables and Manipulating Data with SQL

    Database Foundations

    Achieved

    Oct 18, 2015

    Creating Tables and Manipulating Data with SQL
  • Achievement

    Reading Data from Databases with SQL

    Database Foundations

    Achieved

    Oct 12, 2015

    Reading Data from Databases with SQL
  • Achievement

    Installing MySQL Server and MySQL Workbench

    Database Foundations

    Achieved

    Oct 12, 2015

    Installing MySQL Server and MySQL Workbench
  • Achievement

    Introduction to Data, Databases and SQL

    Database Foundations

    Achieved

    Oct 1, 2015

    Introduction to Data, Databases and SQL
  • Achievement

    Build a Todo List Application with Rails 4

    Build a Todo List Application with Rails 4

    Achieved

    Oct 1, 2015

    Build a Todo List Application with Rails 4
  • Achievement

    Introduction to Design

    Design Foundations

    Achieved

    Sep 22, 2015

    Introduction to Design
  • Achievement

    Ruby Procs & Lambdas

    Ruby Foundations

    Achieved

    May 10, 2015

    Ruby Procs & Lambdas
  • Achievement

    Getting Started with WordPress

    Getting Started with WordPress

    Achieved

    Apr 2, 2015

    Getting Started with WordPress
  • Achievement

    Blocks Practice

    Ruby Blocks

    Achieved

    Mar 10, 2015

    Blocks Practice
  • Achievement

    Working With Blocks

    Ruby Blocks

    Achieved

    Mar 10, 2015

    Working With Blocks
  • Achievement

    Ruby Blocks

    Ruby Blocks

    Achieved

    Mar 10, 2015

    Ruby Blocks
  • Achievement

    Build a Simple Todo List Program

    Ruby Booleans

    Achieved

    Mar 8, 2015

    Build a Simple Todo List Program
  • Achievement

    Ruby Booleans

    Ruby Booleans

    Achieved

    Mar 8, 2015

    Ruby Booleans
  • Achievement

    Build a Bank Account Class

    Ruby Objects and Classes

    Achieved

    Mar 7, 2015

    Build a Bank Account Class
  • Achievement

    Ruby Variables and Methods

    Ruby Objects and Classes

    Achieved

    Mar 6, 2015

    Ruby Variables and Methods
  • Achievement

    Ruby Objects and Classes

    Ruby Objects and Classes

    Achieved

    Mar 6, 2015

    Ruby Objects and Classes
  • Achievement

    Build a Simple Contact List

    Ruby Loops

    Achieved

    Mar 3, 2015

    Build a Simple Contact List
  • Achievement

    Ruby Iteration

    Ruby Loops

    Achieved

    Mar 3, 2015

    Ruby Iteration
  • Achievement

    Ruby Loops

    Ruby Loops

    Achieved

    Mar 3, 2015

    Ruby Loops
  • Achievement

    Build a Grocery List Program

    Ruby Collections

    Achieved

    Feb 28, 2015

    Build a Grocery List Program
  • Achievement

    Ruby Hashes

    Ruby Collections

    Achieved

    Feb 28, 2015

    Ruby Hashes
  • Achievement

    Ruby Arrays

    Ruby Collections

    Achieved

    Feb 28, 2015

    Ruby Arrays
  • Achievement

    Ruby Logical Operators

    Ruby Operators and Control Structures

    Achieved

    Feb 26, 2015

    Ruby Logical Operators
  • Achievement

    Ruby Control Structures

    Ruby Operators and Control Structures

    Achieved

    Feb 26, 2015

    Ruby Control Structures
  • Achievement

    Ruby Operators

    Ruby Operators and Control Structures

    Achieved

    Feb 26, 2015

    Ruby Operators
  • Achievement

    Ruby Loops

    Ruby Foundations

    Achieved

    Feb 26, 2015

    Ruby Loops
  • Achievement

    Ruby Methods

    Ruby Foundations

    Achieved

    Feb 26, 2015

    Ruby Methods
  • Achievement

    Ruby Hashes

    Ruby Foundations

    Achieved

    Feb 26, 2015

    Ruby Hashes
  • Achievement

    Ruby Arrays

    Ruby Foundations

    Achieved

    Feb 23, 2015

    Ruby Arrays
  • Achievement

    Ruby Numbers

    Ruby Foundations

    Achieved

    Feb 23, 2015

    Ruby Numbers
  • Achievement

    Ruby Strings

    Ruby Foundations

    Achieved

    Feb 23, 2015

    Ruby Strings
  • Achievement

    Objects, Classes, and Variables

    Ruby Foundations

    Achieved

    Feb 23, 2015

    Objects, Classes, and Variables
  • Achievement

    Ruby Basics

    Ruby Foundations

    Achieved

    Feb 22, 2015

    Ruby Basics
  • Achievement

    Installing a Ruby Development Environment

    Installing a Ruby Development Environment

    Achieved

    Feb 21, 2015

    Installing a Ruby Development Environment
  • Achievement

    Ruby Methods

    Ruby Basics (Retired)

    Achieved

    Feb 19, 2015

    Ruby Methods
  • Achievement

    Ruby Numbers (Ruby Basics)

    Ruby Basics (Retired)

    Achieved

    Feb 18, 2015

    Ruby Numbers (Ruby Basics)
  • Achievement

    Ruby Strings (Ruby Basics)

    Ruby Basics (Retired)

    Achieved

    Feb 17, 2015

    Ruby Strings (Ruby Basics)
  • Achievement

    How Ruby Works

    Ruby Basics (Retired)

    Achieved

    Feb 16, 2015

    How Ruby Works
  • Achievement

    Adding a Contact Form

    Build a Simple PHP Application

    Achieved

    Jan 21, 2015

    Adding a Contact Form
  • Achievement

    Creating the Menu and Footer

    Build a Simple PHP Application

    Achieved

    Jan 17, 2015

    Creating the Menu and Footer
  • Achievement

    Building a Command Line Application

    Node.js Basics (2014)

    Achieved

    Dec 30, 2014

    Building a Command Line Application
  • Achievement

    Introduction to Node.js

    Node.js Basics (2014)

    Achieved

    Dec 27, 2014

    Introduction to Node.js
  • Achievement

    Exploring Ember

    Ember.js

    Achieved

    Dec 22, 2014

    Exploring Ember
  • Achievement

    Ember Data

    Ember.js

    Achieved

    Dec 22, 2014

    Ember Data
  • Achievement

    Models

    Ember.js

    Achieved

    Dec 22, 2014

    Models
  • Achievement

    Controllers

    Ember.js

    Achieved

    Dec 20, 2014

    Controllers
  • Achievement

    Routes and Templates

    Ember.js

    Achieved

    Dec 20, 2014

    Routes and Templates
  • Achievement

    Getting Started with Ember.js

    Ember.js

    Achieved

    Dec 19, 2014

    Getting Started with Ember.js
  • Achievement

    Getting Started with CSS

    CSS Basics (2014)

    Achieved

    Dec 11, 2014

    Getting Started with CSS
  • Achievement

    AngularJS MVC Frameworks

    AngularJS

    Achieved

    Dec 4, 2014

    AngularJS MVC Frameworks
  • Achievement

    Principles

    Aesthetic Foundations

    Achieved

    Nov 23, 2014

    Principles
  • Achievement

    Elements

    Aesthetic Foundations

    Achieved

    Nov 23, 2014

    Elements
  • Achievement

    Getting Started with PHP

    Build a Simple PHP Application

    Achieved

    Nov 22, 2014

    Getting Started with PHP
  • Achievement

    Operators

    Swift Basics (retired)

    Achieved

    Nov 21, 2014

    Operators
  • Achievement

    Types

    Swift Basics (retired)

    Achieved

    Nov 21, 2014

    Types
  • Achievement

    Variables and Constants

    Swift Basics (retired)

    Achieved

    Nov 20, 2014

    Variables and Constants
  • Achievement

    Grid Layout

    CSS Layout Techniques

    Achieved

    Nov 12, 2014

    Grid Layout
  • Achievement

    Flexbox Layout

    CSS Layout Techniques

    Achieved

    Nov 6, 2014

    Flexbox Layout
  • Achievement

    Positioning Schemes

    CSS Layout Techniques

    Achieved

    Nov 1, 2014

    Positioning Schemes
  • Achievement

    Float Layout

    CSS Layout Techniques

    Achieved

    Oct 26, 2014

    Float Layout
  • Achievement

    Display Modes

    CSS Layout Techniques

    Achieved

    Oct 26, 2014

    Display Modes
  • Achievement

    Finding Your First Project

    How to Freelance

    Achieved

    Oct 26, 2014

    Finding Your First Project
  • Achievement

    Starting a Freelance Career

    How to Freelance

    Achieved

    Oct 25, 2014

    Starting a Freelance Career
  • Achievement

    Advanced Sass Concepts

    Sass Basics (retired)

    Achieved

    Oct 24, 2014

    Advanced Sass Concepts
  • Achievement

    Speeding up Workflow With Sass

    Sass Basics (retired)

    Achieved

    Oct 24, 2014

    Speeding up Workflow With Sass
  • Achievement

    Variables, Mixins, and Extending Selectors

    Sass Basics (retired)

    Achieved

    Oct 23, 2014

    Variables, Mixins, and Extending Selectors
  • Achievement

    Getting Started with Sass

    Sass Basics (retired)

    Achieved

    Oct 20, 2014

    Getting Started with Sass
  • Achievement

    Workflows

    Git Basics

    Achieved

    Oct 20, 2014

    Workflows
  • Achievement

    Working With Remote Repositories

    Git Basics

    Achieved

    Oct 20, 2014

    Working With Remote Repositories
  • Achievement

    Merging

    Git Basics

    Achieved

    Oct 20, 2014

    Merging
  • Achievement

    Branches

    Git Basics

    Achieved

    Oct 20, 2014

    Branches
  • Achievement

    Getting Started With Git

    Git Basics

    Achieved

    Oct 19, 2014

    Getting Started With Git
  • Achievement

    Why Version Control Matters

    Git Basics

    Achieved

    Oct 18, 2014

    Why Version Control Matters
  • Achievement

    Installing Programs

    Console Foundations

    Achieved

    Oct 18, 2014

    Installing Programs
  • Achievement

    Environment and Redirection

    Console Foundations

    Achieved

    Oct 18, 2014

    Environment and Redirection
  • Achievement

    Console Processes

    Console Foundations

    Achieved

    Oct 18, 2014

    Console Processes
  • Achievement

    Console Users and Permission

    Console Foundations

    Achieved

    Oct 16, 2014

    Console Users and Permission
  • Achievement

    Moving Around in the Console

    Console Foundations

    Achieved

    Oct 15, 2014

    Moving Around in the Console
  • Achievement

    Chrome DevTools Basics

    Website Optimization

    Achieved

    Oct 15, 2014

    Chrome DevTools Basics
  • Achievement

    Web Apps

    Accessibility

    Achieved

    Oct 13, 2014

    Web Apps
  • Achievement

    Websites

    Accessibility

    Achieved

    Oct 13, 2014

    Websites
  • Achievement

    Introduction

    Accessibility

    Achieved

    Oct 11, 2014

    Introduction
  • Achievement

    AJAX and APIs

    AJAX Basics (retiring)

    Achieved

    Oct 11, 2014

    AJAX and APIs
  • Achievement

    jQuery and AJAX

    AJAX Basics (retiring)

    Achieved

    Oct 9, 2014

    jQuery and AJAX
  • Achievement

    Programming AJAX

    AJAX Basics (retiring)

    Achieved

    Oct 9, 2014

    Programming AJAX
  • Achievement

    AJAX Concepts

    AJAX Basics (retiring)

    Achieved

    Oct 8, 2014

    AJAX Concepts
  • Achievement

    Structuring Tables

    HTML Tables

    Achieved

    Oct 7, 2014

    Structuring Tables
  • Achievement

    Table Basics

    HTML Tables

    Achieved

    Oct 7, 2014

    Table Basics
  • Achievement

    Traversing and Manipulating the DOM with JavaScript

    Interactive Web Pages with JavaScript

    Achieved

    Oct 7, 2014

    Traversing and Manipulating the DOM with JavaScript
  • Achievement

    Selecting Elements and Adding Events with JavaScript

    Interactive Web Pages with JavaScript

    Achieved

    Oct 4, 2014

    Selecting Elements and Adding Events with JavaScript
  • Achievement

    JavaScript and the DOM

    Interactive Web Pages with JavaScript

    Achieved

    Oct 4, 2014

    JavaScript and the DOM
  • Achievement

    Choosing Options

    HTML Forms

    Achieved

    Oct 4, 2014

    Choosing Options
  • Achievement

    Organizing Forms

    HTML Forms

    Achieved

    Oct 2, 2014

    Organizing Forms
  • Achievement

    Form Basics

    HTML Forms

    Achieved

    Oct 2, 2014

    Form Basics
  • Achievement

    Media Queries

    Unused CSS Stages

    Achieved

    Oct 1, 2014

    Media Queries
  • Achievement

    CSS Animations

    Unused CSS Stages

    Achieved

    Sep 27, 2014

    CSS Animations
  • Achievement

    Transitions and Transforms

    Unused CSS Stages

    Achieved

    Sep 26, 2014

    Transitions and Transforms
  • Achievement

    Flexbox and Multi-Column Layout

    Unused CSS Stages

    Achieved

    Sep 20, 2014

    Flexbox and Multi-Column Layout
  • Achievement

    Gradients

    CSS Foundations

    Achieved

    Sep 20, 2014

    Gradients
  • Achievement

    Web Typography

    CSS Foundations

    Achieved

    Sep 20, 2014

    Web Typography
  • Achievement

    Backgrounds and Borders

    CSS Foundations

    Achieved

    Sep 13, 2014

    Backgrounds and Borders
  • Achievement

    CSS Box Model

    CSS Foundations

    Achieved

    Sep 4, 2014

    CSS Box Model
  • Achievement

    Text, Fonts, and Lists

    CSS Foundations

    Achieved

    Aug 28, 2014

    Text, Fonts, and Lists
  • Achievement

    Values and Units

    CSS Foundations

    Achieved

    Aug 28, 2014

    Values and Units
  • Achievement

    Advanced Selectors

    CSS Foundations

    Achieved

    Aug 27, 2014

    Advanced Selectors
  • Achievement

    Selectors

    CSS Foundations

    Achieved

    Aug 12, 2014

    Selectors
  • Achievement

    Getting Started with CSS

    CSS Foundations

    Achieved

    Jul 17, 2014

    Getting Started with CSS
  • Achievement

    Forms

    HTML

    Achieved

    Jul 15, 2014

    Forms
  • Achievement

    Tables

    HTML

    Achieved

    Jul 9, 2014

    Tables
  • Achievement

    Objects

    HTML

    Achieved

    Jul 9, 2014

    Objects
  • Achievement

    Links

    HTML

    Achieved

    Jul 9, 2014

    Links
  • Achievement

    Lists

    HTML

    Achieved

    Jul 9, 2014

    Lists
  • Achievement

    Text

    HTML

    Achieved

    Jul 8, 2014

    Text
  • Achievement

    Introduction

    HTML

    Achieved

    Jul 8, 2014

    Introduction
  • Achievement

    Debugging HTML and CSS Problems

    How to Make a Website

    Achieved

    Jul 6, 2014

    Debugging HTML and CSS Problems
  • Achievement

    Sharing a Website

    How to Make a Website

    Achieved

    Jul 4, 2014

    Sharing a Website
  • Achievement

    Responsive Web Design and Testing

    How to Make a Website

    Achieved

    Jul 4, 2014

    Responsive Web Design and Testing
  • Achievement

    Adding Pages to a Website

    How to Make a Website

    Achieved

    Jul 3, 2014

    Adding Pages to a Website
  • Achievement

    Styling Web Pages and Navigation

    How to Make a Website

    Achieved

    Jul 1, 2014

    Styling Web Pages and Navigation
  • Achievement

    Customizing Colors and Fonts

    How to Make a Website

    Achieved

    Jun 28, 2014

    Customizing Colors and Fonts
  • Achievement

    CSS: Cascading Style Sheets

    How to Make a Website

    Achieved

    Jun 27, 2014

    CSS: Cascading Style Sheets
  • Achievement

    Creating HTML Content

    How to Make a Website

    Achieved

    Jun 26, 2014

    Creating HTML Content
  • Achievement

    HTML First

    How to Make a Website

    Achieved

    Jun 26, 2014

    HTML First
  • Achievement

    Beginning HTML and CSS

    How to Make a Website

    Achieved

    Jun 26, 2014

    Beginning HTML and CSS
  • Achievement

    Form Validation and Manipulation

    Build an Interactive Website

    Achieved

    Jun 24, 2014

    Form Validation and Manipulation
  • Achievement

    Introduction to jQuery

    Build an Interactive Website

    Achieved

    Jun 23, 2014

    Introduction to jQuery
  • Achievement

    Creating a Simple Drawing Application

    jQuery Basics (2014)

    Achieved

    Jun 23, 2014

    Creating a Simple Drawing Application
  • Achievement

    Creating a Password Confirmation Form

    jQuery Basics (2014)

    Achieved

    Jun 22, 2014

    Creating a Password Confirmation Form
  • Achievement

    Creating a Mobile Drop Down Menu

    jQuery Basics (2014)

    Achieved

    Jun 21, 2014

    Creating a Mobile Drop Down Menu
  • Achievement

    Creating a Simple Lightbox

    jQuery Basics (2014)

    Achieved

    Jun 19, 2014

    Creating a Simple Lightbox
  • Achievement

    Creating a Spoiler Revealer

    jQuery Basics (2014)

    Achieved

    Jun 18, 2014

    Creating a Spoiler Revealer
  • Achievement

    Introduction to jQuery

    jQuery Basics (2014)

    Achieved

    Jun 18, 2014

    Introduction to jQuery
  • Achievement

    JavaScript Objects

    JavaScript Foundations

    Achieved

    Jun 16, 2014

    JavaScript Objects
  • Achievement

    JavaScript Functions

    JavaScript Foundations

    Achieved

    Jun 15, 2014

    JavaScript Functions
  • Achievement

    JavaScript Arrays

    JavaScript Foundations

    Achieved

    Jun 15, 2014

    JavaScript Arrays
  • Achievement

    JavaScript Numbers

    JavaScript Foundations

    Achieved

    Jun 14, 2014

    JavaScript Numbers
  • Achievement

    JavaScript Strings

    JavaScript Foundations

    Achieved

    Jun 14, 2014

    JavaScript Strings
  • Achievement

    Introduction Variables

    JavaScript Foundations

    Achieved

    Jun 14, 2014

    Introduction Variables
  • Achievement

    Functions

    Introduction to Programming

    Achieved

    Jun 13, 2014

    Functions
  • Achievement

    Objects and Arrays

    Introduction to Programming

    Achieved

    Jun 13, 2014

    Objects and Arrays
  • Achievement

    Control Structures

    Introduction to Programming

    Achieved

    Jun 13, 2014

    Control Structures
  • Achievement

    Basics

    Introduction to Programming

    Achieved

    Jun 13, 2014

    Basics
  • Achievement

    Foundation Framework

    Objective-C Basics (Retired)

    Achieved

    Jun 12, 2014

    Foundation Framework
  • Achievement

    Introduction to Objective-C

    Objective-C Basics (Retired)

    Achieved

    Jun 11, 2014

    Introduction to Objective-C
  • Achievement

    Pointers and Memory

    Objective-C Basics (Retired)

    Achieved

    Jun 9, 2014

    Pointers and Memory
  • Achievement

    Functional Programming in C

    Objective-C Basics (Retired)

    Achieved

    Jun 9, 2014

    Functional Programming in C
  • Achievement

    Fundamentals of C

    Objective-C Basics (Retired)

    Achieved

    Jun 8, 2014

    Fundamentals of C
  • Achievement

    Newbie

    Achieved

    Jun 8, 2014

    Newbie