Grigorij Schleifer

Grigorij Schleifer

Member Since April 7, 2015

I am an anesthesiologist from Germany. In my spare time, I learn to code and read stuff.

10,363

Total Points

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

Skills & Experience

  • Spoken Languages

    • German, Russian, English

  • Looking for work

    Yes

87 Achievements

  • Achievement

    Working By Yourself

    GitHub Basics

    Achieved

    Sep 25, 2018

    Working By Yourself
  • Achievement

    Hello, GitHub!

    GitHub Basics

    Achieved

    Sep 16, 2018

    Hello, GitHub!
  • Achievement

    Updating Data in a Database

    Modifying Data with SQL

    Achieved

    Sep 8, 2018

    Updating Data in a Database
  • Achievement

    Adding Data to a Database

    Modifying Data with SQL

    Achieved

    Sep 8, 2018

    Adding Data to a Database
  • Achievement

    Where and How Big Data Is Used

    Introduction to Big Data

    Achieved

    Sep 7, 2018

    Where and How Big Data Is Used
  • Achievement

    What is Big Data

    Introduction to Big Data

    Achieved

    Sep 6, 2018

    What is Big Data
  • Achievement

    Finding the Data You Want

    SQL Basics

    Achieved

    Sep 1, 2018

    Finding the Data You Want
  • Achievement

    Getting Data from a Database

    SQL Basics

    Achieved

    Aug 31, 2018

    Getting Data from a Database
  • Achievement

    Data, Databases and SQL

    SQL Basics

    Achieved

    Jul 27, 2018

    Data, Databases and SQL
  • Achievement

    Python Sets

    Python Collections (2016, retired 2019)

    Achieved

    Jul 25, 2018

    Python Sets
  • Achievement

    Python Tuples

    Python Collections (2016, retired 2019)

    Achieved

    Jul 18, 2018

    Python Tuples
  • Achievement

    Python Dictionaries

    Python Collections (2016, retired 2019)

    Achieved

    Jul 14, 2018

    Python Dictionaries
  • Achievement

    Python Slices

    Python Collections (2016, retired 2019)

    Achieved

    Jul 7, 2018

    Python Slices
  • Achievement

    Python Lists

    Python Collections (2016, retired 2019)

    Achieved

    Jul 6, 2018

    Python Lists
  • Achievement

    Build an Application

    Introducing Lists

    Achieved

    Jun 26, 2018

    Build an Application
  • Achievement

    Using Lists

    Introducing Lists

    Achieved

    Jun 21, 2018

    Using Lists
  • Achievement

    Meet Lists

    Introducing Lists

    Achieved

    Jun 19, 2018

    Meet Lists
  • Achievement

    Say Hello to Django

    Django Basics

    Achieved

    Jun 18, 2018

    Say Hello to Django
  • Achievement

    What Is WordPress?

    What Is WordPress?

    Achieved

    Jun 18, 2018

    What Is WordPress?
  • Achievement

    All Together Now

    Python Basics

    Achieved

    Jun 17, 2018

    All Together Now
  • Achievement

    Functions and Looping

    Python Basics

    Achieved

    Jun 12, 2018

    Functions and Looping
  • Achievement

    Types and Branching

    Python Basics

    Achieved

    Jun 10, 2018

    Types and Branching
  • Achievement

    Meet Python

    Python Basics

    Achieved

    Jun 6, 2018

    Meet Python
  • Achievement

    Slices

    Python Collections (Retired)

    Achieved

    May 30, 2016

    Slices
  • Achievement

    Lists Redux

    Python Collections (Retired)

    Achieved

    May 22, 2016

    Lists Redux
  • Achievement

    Letter Game App

    Python Basics (2015)

    Achieved

    Apr 30, 2016

    Letter Game App
  • Achievement

    Number Game App

    Python Basics (2015)

    Achieved

    Apr 8, 2016

    Number Game App
  • Achievement

    Shopping List App

    Python Basics (2015)

    Achieved

    Apr 1, 2016

    Shopping List App
  • Achievement

    Logic in Python

    Python Basics (2015)

    Achieved

    Mar 26, 2016

    Logic in Python
  • Achievement

    GET and POST Requests in a Browser

    HTTP Basics

    Achieved

    Mar 20, 2016

    GET and POST Requests in a Browser
  • Achievement

    Introduction to HTTP

    HTTP Basics

    Achieved

    Mar 20, 2016

    Introduction to HTTP
  • Achievement

    Python Data Types

    Python Basics (2015)

    Achieved

    Mar 19, 2016

    Python Data Types
  • Achievement

    The Model-View-Controller Pattern

    Build an Interactive Story App (Retired)

    Achieved

    Mar 15, 2016

    The Model-View-Controller Pattern
  • Achievement

    Intents and Multiple Activities

    Build an Interactive Story App (Retired)

    Achieved

    Mar 7, 2016

    Intents and Multiple Activities
  • Achievement

    User Input

    Build an Interactive Story App (Retired)

    Achieved

    Mar 2, 2016

    User Input
  • Achievement

    Testing and Debugging

    Build a Simple Android App

    Achieved

    Feb 27, 2016

    Testing and Debugging
  • Achievement

    Improving Our Code

    Build a Simple Android App

    Achieved

    Feb 26, 2016

    Improving Our Code
  • Achievement

    Basic Android Programming

    Build a Simple Android App

    Achieved

    Feb 23, 2016

    Basic Android Programming
  • Achievement

    Using Java's Built-In Annotations

    Java Annotations

    Achieved

    Feb 21, 2016

    Using Java's Built-In Annotations
  • Achievement

    Testing and Debugging

    Build a Simple Android App (2014)

    Achieved

    Feb 20, 2016

    Testing and Debugging
  • Achievement

    Improving Our Code

    Build a Simple Android App (2014)

    Achieved

    Feb 16, 2016

    Improving Our Code
  • Achievement

    Setting Up Your Local Environment for Spring Development

    Spring Basics

    Achieved

    Feb 3, 2016

    Setting Up Your Local Environment for Spring Development
  • Achievement

    Build a Pomodoro App

    Build a JavaFX Application

    Achieved

    Feb 2, 2016

    Build a Pomodoro App
  • Achievement

    Introduction

    HTML

    Achieved

    Jan 30, 2016

    Introduction
  • Achievement

    Design a Better App

    Build a JavaFX Application

    Achieved

    Jan 23, 2016

    Design a Better App
  • Achievement

    Welcome to the Treehouse Club

    Treehouse Club: HTML

    Achieved

    Jan 22, 2016

    Welcome to the Treehouse Club
  • Achievement

    Coding the Fun Facts

    Build a Simple Android App (2014)

    Achieved

    Jan 20, 2016

    Coding the Fun Facts
  • Achievement

    Graphical User Interfaces

    Build a JavaFX Application

    Achieved

    Jan 17, 2016

    Graphical User Interfaces
  • Achievement

    Advanced Tooling

    Local Development Environments

    Achieved

    Jan 16, 2016

    Advanced Tooling
  • Achievement

    Basic Android Programming

    Build a Simple Android App (2014)

    Achieved

    Jan 14, 2016

    Basic Android Programming
  • Achievement

    Creating the Screen Layout

    Build a Simple Android App

    Achieved

    Jan 13, 2016

    Creating the Screen Layout
  • Achievement

    Getting Started with Android

    Build a Simple Android App

    Achieved

    Jan 10, 2016

    Getting Started with Android
  • Achievement

    Installing Programs

    Console Foundations

    Achieved

    Jan 6, 2016

    Installing Programs
  • Achievement

    Environment and Redirection

    Console Foundations

    Achieved

    Dec 24, 2015

    Environment and Redirection
  • Achievement

    Console Processes

    Console Foundations

    Achieved

    Dec 21, 2015

    Console Processes
  • Achievement

    Website Basics

    Website Basics

    Achieved

    Dec 20, 2015

    Website Basics
  • Achievement

    Graphic Basics

    Technology Foundations

    Achieved

    Dec 20, 2015

    Graphic Basics
  • Achievement

    DNS Basics

    Technology Foundations

    Achieved

    Dec 20, 2015

    DNS Basics
  • Achievement

    Console Users and Permission

    Console Foundations

    Achieved

    Dec 18, 2015

    Console Users and Permission
  • Achievement

    Python For Beginners

    Python Basics (2015)

    Achieved

    Dec 13, 2015

    Python For Beginners
  • Achievement

    Creating Tables and Manipulating Data with SQL

    Database Foundations

    Achieved

    Nov 4, 2015

    Creating Tables and Manipulating Data with SQL
  • Achievement

    Reading Data from Databases with SQL

    Database Foundations

    Achieved

    Nov 3, 2015

    Reading Data from Databases with SQL
  • Achievement

    Ins & Outs

    Python Basics (Retired)

    Achieved

    Nov 1, 2015

    Ins & Outs
  • Achievement

    Installing MySQL Server and MySQL Workbench

    Database Foundations

    Achieved

    Oct 28, 2015

    Installing MySQL Server and MySQL Workbench
  • Achievement

    Introduction to Data, Databases and SQL

    Database Foundations

    Achieved

    Oct 25, 2015

    Introduction to Data, Databases and SQL
  • Achievement

    Moving Around in the Console

    Console Foundations

    Achieved

    Oct 24, 2015

    Moving Around in the Console
  • Achievement

    The Internet

    How the Internet Works

    Achieved

    Oct 20, 2015

    The Internet
  • Achievement

    Creating the Initial Screen Layout

    Build a Simple Android App (2014)

    Achieved

    Oct 16, 2015

    Creating the Initial Screen Layout
  • Achievement

    Getting Started with Android

    Build a Simple Android App (2014)

    Achieved

    Sep 22, 2015

    Getting Started with Android
  • Achievement

    IDE Exploration

    Local Development Environments

    Achieved

    Sep 20, 2015

    IDE Exploration
  • Achievement

    How it Works

    Local Development Environments

    Achieved

    Sep 18, 2015

    How it Works
  • Achievement

    Efficiency!

    Java Data Structures

    Achieved

    Sep 16, 2015

    Efficiency!
  • Achievement

    Exploring the Java Collections Framework

    Java Data Structures

    Achieved

    Jul 12, 2015

    Exploring the Java Collections Framework
  • Achievement

    Organizing Data

    Java Data Structures

    Achieved

    Jun 16, 2015

    Organizing Data
  • Achievement

    Getting There

    Java Data Structures

    Achieved

    Jun 8, 2015

    Getting There
  • Achievement

    Delivering the MVP

    Java Objects (Retired)

    Achieved

    May 24, 2015

    Delivering the MVP
  • Achievement

    Say Hello to Python

    Python Basics (Retired)

    Achieved

    May 18, 2015

    Say Hello to Python
  • Achievement

    Creating the MVP

    Java Objects (Retired)

    Achieved

    May 13, 2015

    Creating the MVP
  • Achievement

    Computer Languages

    Computer Basics

    Achieved

    May 6, 2015

    Computer Languages
  • Achievement

    Harnessing the Power of Objects

    Java Objects (Retired)

    Achieved

    May 1, 2015

    Harnessing the Power of Objects
  • Achievement

    WWW

    How the Web Works

    Achieved

    Apr 29, 2015

    WWW
  • Achievement

    Computer Basics

    Computer Basics

    Achieved

    Apr 23, 2015

    Computer Basics
  • Achievement

    Meet Objects

    Java Objects (Retired)

    Achieved

    Apr 17, 2015

    Meet Objects
  • Achievement

    Perfecting the Prototype

    Java Basics

    Achieved

    Apr 13, 2015

    Perfecting the Prototype
  • Achievement

    Using your New Tools

    Java Basics

    Achieved

    Apr 11, 2015

    Using your New Tools
  • Achievement

    Getting Started with Java

    Java Basics

    Achieved

    Apr 11, 2015

    Getting Started with Java
  • Achievement

    Newbie

    Achieved

    Apr 7, 2015

    Newbie