Dennis Zheleznyak

Dennis Zheleznyak

Member Since March 6, 2017

4,155

Total Points

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Skills & Experience

  • Spoken Languages

    • English
    • Hebrew

44 Achievements

  • Achievement

    Getting to Know PHP

    PHP Basics

    Achieved

    Oct 28, 2017

    Getting to Know PHP
  • Achievement

    Adding a New Web Page

    Introduction to HTML and CSS (2016)

    Achieved

    Oct 28, 2017

    Adding a New Web Page
  • Achievement

    Meet Peewee

    Using Databases in Python

    Achieved

    Oct 14, 2017

    Meet Peewee
  • Achievement

    Python Regular Expressions

    Regular Expressions in Python

    Achieved

    Oct 14, 2017

    Python Regular Expressions
  • Achievement

    Timezones

    Dates and Times in Python (2014)

    Achieved

    Oct 12, 2017

    Timezones
  • Achievement

    Math Quiz App

    Dates and Times in Python (2014)

    Achieved

    Oct 12, 2017

    Math Quiz App
  • Achievement

    Make It Beautiful with CSS

    Introduction to HTML and CSS (2016)

    Achieved

    Oct 12, 2017

    Make It Beautiful with CSS
  • Achievement

    HTML: The Structural Foundation of Web Pages and Applications

    Introduction to HTML and CSS (2016)

    Achieved

    Oct 12, 2017

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

    Getting Familiar with HTML and CSS

    Introduction to HTML and CSS (2016)

    Achieved

    Oct 11, 2017

    Getting Familiar with HTML and CSS
  • Achievement

    Dates and Times

    Dates and Times in Python (2014)

    Achieved

    Oct 11, 2017

    Dates and Times
  • Achievement

    Buggy Logs

    Write Better Python

    Achieved

    Oct 7, 2017

    Buggy Logs
  • Achievement

    Cleaner Code

    Write Better Python

    Achieved

    Oct 7, 2017

    Cleaner Code
  • Achievement

    Dice Roller

    Object-Oriented Python

    Achieved

    Oct 7, 2017

    Dice Roller
  • Achievement

    Security in Practice

    Security Literacy

    Achieved

    Sep 30, 2017

    Security in Practice
  • Achievement

    Common Attacks and Defenses

    Security Literacy

    Achieved

    Sep 30, 2017

    Common Attacks and Defenses
  • Achievement

    Hello Internet!

    Security Literacy

    Achieved

    Sep 30, 2017

    Hello Internet!
  • Achievement

    Security: Solutions

    Introduction to Data Security

    Achieved

    Sep 30, 2017

    Security: Solutions
  • Achievement

    Security: Concerns

    Introduction to Data Security

    Achieved

    Sep 30, 2017

    Security: Concerns
  • Achievement

    Python: Advanced Objects

    Object-Oriented Python

    Achieved

    Sep 30, 2017

    Python: Advanced Objects
  • Achievement

    Say Hello to Django

    Django Basics

    Achieved

    Sep 29, 2017

    Say Hello to Django
  • Achievement

    Python: Inheritance

    Object-Oriented Python

    Achieved

    Sep 29, 2017

    Python: Inheritance
  • Achievement

    Python: Instant Objects

    Object-Oriented Python

    Achieved

    Sep 9, 2017

    Python: Instant Objects
  • Achievement

    Dungeon Game 2

    Python Collections (2016, retired 2019)

    Achieved

    Sep 9, 2017

    Dungeon Game 2
  • Achievement

    Swift Types

    Swift Basics

    Achieved

    Sep 9, 2017

    Swift Types
  • Achievement

    An Introduction to Swift Programming

    Swift Basics

    Achieved

    Sep 8, 2017

    An Introduction to Swift Programming
  • Achievement

    Python Sets

    Python Collections (2016, retired 2019)

    Achieved

    Sep 8, 2017

    Python Sets
  • Achievement

    Python Tuples

    Python Collections (2016, retired 2019)

    Achieved

    Sep 8, 2017

    Python Tuples
  • Achievement

    Harnessing the Power of Objects

    Java Objects

    Achieved

    Sep 7, 2017

    Harnessing the Power of Objects
  • Achievement

    Meet Objects

    Java Objects

    Achieved

    Sep 6, 2017

    Meet Objects
  • Achievement

    Perfecting the Prototype

    Java Basics

    Achieved

    Sep 5, 2017

    Perfecting the Prototype
  • Achievement

    Using your New Tools

    Java Basics

    Achieved

    Sep 4, 2017

    Using your New Tools
  • Achievement

    Getting Started with Java

    Java Basics

    Achieved

    Sep 4, 2017

    Getting Started with Java
  • Achievement

    Python Dictionaries

    Python Collections (2016, retired 2019)

    Achieved

    Aug 26, 2017

    Python Dictionaries
  • Achievement

    Creating the Screen Layout

    Build a Simple Android App with Java

    Achieved

    Aug 26, 2017

    Creating the Screen Layout
  • Achievement

    Getting Started with Android

    Build a Simple Android App with Java

    Achieved

    Aug 26, 2017

    Getting Started with Android
  • Achievement

    Python Slices

    Python Collections (2016, retired 2019)

    Achieved

    Aug 11, 2017

    Python Slices
  • Achievement

    Python Lists

    Python Collections (2016, retired 2019)

    Achieved

    Aug 2, 2017

    Python Lists
  • Achievement

    Letter Game App

    Python Basics (2015)

    Achieved

    Jul 28, 2017

    Letter Game App
  • Achievement

    Number Game App

    Python Basics (2015)

    Achieved

    Jul 28, 2017

    Number Game App
  • Achievement

    Shopping List App

    Python Basics (2015)

    Achieved

    Jul 28, 2017

    Shopping List App
  • Achievement

    Logic in Python

    Python Basics (2015)

    Achieved

    Jul 26, 2017

    Logic in Python
  • Achievement

    Python Data Types

    Python Basics (2015)

    Achieved

    May 2, 2017

    Python Data Types
  • Achievement

    Python For Beginners

    Python Basics (2015)

    Achieved

    Apr 22, 2017

    Python For Beginners
  • Achievement

    Newbie

    Achieved

    Mar 6, 2017

    Newbie