Sergio Andrés Herrera Velásquez
seal-mask

Sergio Andrés Herrera Velásquez

Techdegree Graduate

Envigado, Colombia

22,188

Total Points

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Skills & Experience

  • Job Title

    Customer Service Agent-Vehicle Broker Dispatcher

  • Spoken Languages

    • English
    • Spanish

169 Achievements

  • Exploring Async/Await
  • Understanding Promises
  • Asynchronous JavaScript with Callbacks
  • What is Asynchronous Programming?
  • Programming AJAX
  • AJAX Concepts
  • GET and POST Requests in a Browser
  • Introduction to HTTP
  • The Python language
  • Combining Array Methods
  • Array Manipulation
  • Array Iteration
  • Callbacks and the DOM
  • Callbacks with Timers
  • Introduction to Callback Functions
  • Getters and Setters
  • Working with Classes in JavaScript
  • Object Basics
  • Introduction to Object-Oriented JavaScript
  • Reformatting User Input
  • Validating a Form with Regular Expressions
  • Regular Expressions
  • Choosing Options
  • Organizing Forms
  • Form Basics
  • JavaScript Tools and Workflows
  • JavaScript is Everywhere
  • Improving the Application Code
  • Editing and Filtering Names
  • Adding and Removing Names
  • Traversing the DOM
  • Responding to User Interaction
  • Making Changes to the DOM
  • Getting a Handle on the DOM
  • The Browser Environment
  • 100 Days of Code
  • The Role of Selectors in JavaScript
  • Pseudo-classes and Combinators
  • Selector Basics
  • Loop Through Objects
  • Object Basics
  • Multidimensional Arrays
  • Loop Through Arrays
  • Store Multiple Values in an Array
  • Working with 'for' Loops
  • Simplify Repetitive Tasks with Loops
  • Arrow Functions
  • Pass Information Into Functions
  • Create Reusable Code with Functions
  • The Math Object
  • Working with Numbers
  • Making Decisions in Your Code with Conditional Statements
  • Working With Strings
  • Storing and Tracking Information with Variables
  • Hello, JavaScript!
  • Recursion and Space Complexity
  • Algorithms in Code
  • Time Complexity
  • Playing a Counting Game
  • Introduction to Computer Vision
  • Writing a Classifier
  • Getting the REST You Need 2
  • Machine Learning Vocabulary
  • Introduction to Machine Learning
  • Data Cleaning
  • Understanding Cleaning Data
  • Python Regular Expressions
  • Seaborn Data Visualization Challenges
  • Plotting Functions
  • Introduction to Seaborn
  • Practicing Data Visualization
  • Line and Area Charts, Scatter Plots, and Maps
  • Bar Charts, Histograms, and Pie Charts
  • Data Visualization Fundamentals
  • Data Eruption
  • Chart Toppers
  • Getting Started with Data Visualization
  • Welcome to Basic Statistics for Data Analysis
  • Scrum Artifacts
  • Scrum Events
  • Introducing Scrum
  • What is Agile?
  • Lists, Code, Links and Images
  • Understanding Markdown
  • What is the MailChimp API
  • Practical Jenkins
  • Pipelines
  • How Jenkins Works
  • S3 Storage Service
  • AWS and "The Cloud"
  • Exploring pandas
  • Meet pandas
  • Array Programming
  • Array Organization
  • Meet NumPy
  • Subqueries
  • Set Operations
  • Joining Table Data with SQL
  • Table Relationships
  • Database Keys
  • Database Normalization
  • Handling Errors When Manipulating Data
  • Deleting Data from a Database
  • Updating Data in a Database
  • Adding Data to a Database
  • Getting Started with Java
  • Build a Spreadsheet
  • Spreadsheet Best Practices
  • Spreadsheet Functions & Formulas
  • Getting Started With Spreadsheets
  • Introducing Spreadsheets
  • Welcome to Basic Math for Data Analysis
  • Tools of the Trade
  • Breaking Down Data Analysis
  • Covering Your Bases
  • Be Assertive!
  • What Is Testing?
  • Connecting to a Database with SQLAlchemy
  • Creating a Basic Website with Flask
  • Build an Accessible Form
  • Introduction To Accessibility
  • CSS Fundamentals
  • HTML Fundamentals
  • Getting Familiar with HTML and CSS
  • Working with SQLAlchemy
  • Introduction to SQLAlchemy
  • Finding the Data You Want
  • Getting Data from a Database
  • Data, Databases and SQL
  • GitHub and Other Remote Repositories
  • Managing Committed Files
  • First Commits
  • Common Commands
  • Directories and Files
  • The Command Shell
  • The Time Tracker
  • Getting Started With HTML
  • The Birthday App
  • Date and Time Basics
  • Introduction
  • Creating a Memory Game
  • Emulating Built-ins
  • Welcome to OOP
  • Technical Interview Prep: Basic Python
  • Building Your Resume
  • Review Your Checklist with an Advisor
  • Build Your Professional Portfolio
  • Use LinkedIn to Grow Your Network
  • Film Your Pitch Video
  • Give Your Resume a Makeover
  • Buggy Logs
  • Cleaner Code
  • Iterating and Packing with Dictionaries
  • Introducing Dictionaries
  • Sequence Operations
  • Sequence Iterations
  • Packing and Unpacking
  • Getting Info In and Out of Functions
  • Introduction to Functions
  • Getting to Know Tuples
  • Build an Application
  • Using Lists
  • Meet Lists
  • Practice Functions
  • All Together Now
  • Functions and Looping
  • Types and Branching
  • Meet Python
  • Newbie