CodeSignal Courses

Lock-Free Concurrent Data Structures

2 ratings

Implement lock-free C++ data structures while mastering atomic operations, memory ordering, and lock-free stacks and queues.

• CodeSignal
• 1 hour
• Self-Paced
• Free Certificate

Career Certificate

How to Win Friends & Influence People in Practice

2 ratings

Practice Dale Carnegie’s relationship, communication, influence, and conflict-resolution principles through AI-driven role-plays.

• CodeSignal
• 5 hours
• Self-Paced
• Free Certificate
• 4 courses

Career Certificate

Mastering Test Automation with Playwright and TypeScript

202 ratings at CodeSignal

Build browser and API test automation with Playwright and TypeScript, including advanced navigation, reusable test patterns, and comprehensive e-commerce test suites.

• CodeSignal
• 6 hours
• Self-Paced
• Free Certificate
• 5 courses

Career Certificate

PHP Programming for Beginners

2 ratings

Learn PHP syntax, control structures, functions, and basic object-oriented programming for a foundation in web development.

• CodeSignal
• 9 hours
• Self-Paced
• Free Certificate
• 5 courses

Career Certificate

C++ Programming for Beginners

503 ratings at CodeSignal

Learn C++ syntax and core programming through loops, data structures, debugging, functions, classes, and object-oriented programming.

• CodeSignal
• 11 hours
• Self-Paced
• Free Certificate
• 7 courses

Career Certificate

Introduction to Dart for Beginners

142 ratings at CodeSignal

A beginner-friendly path through Dart fundamentals, data structures, loops, functions, and object-oriented programming for cross-platform app development.

• CodeSignal
• 8 hours
• Self-Paced
• Free Certificate
• 5 courses

Career Certificate

Implementing MVC ToDo App with PHP Laravel

219 ratings at CodeSignal

Build, secure, and test an MVC ToDo application using PHP Laravel.

• CodeSignal
• 10 hours
• Self-Paced
• Free Certificate
• 4 courses

The "What’s This Really About" Conversation

2 ratings

Practice uncovering hidden motivations, contextual meaning, misunderstandings, and unspoken issues in workplace conversations.

• CodeSignal
• 1 hour
• Self-Paced
• Free Certificate

Level Up Your Communication & Listening Skills

2 ratings

Build stronger conversations through active listening, open-ended questions, vulnerability, and the RASA framework, supported by AI-powered practice.

• CodeSignal
• 1 hour
• Self-Paced
• Free Certificate

Career Certificate

Mastering Algorithms and Data Structures in Java

1493 ratings at CodeSignal

Prepare for technical coding interviews by choosing, applying, and explaining algorithms and data structures in Java.

• CodeSignal
• 10 hours
• Self-Paced
• Free Certificate
• 4 courses

Career Certificate

Journey into Data Science with Python

1596 ratings at CodeSignal

Use Python to turn Titanic, airline, and housing data into insights through cleaning, visualization, time series analysis, and machine learning.

• CodeSignal
• 28 hours
• Self-Paced
• Free Certificate
• 7 courses

Getting Started with JavaScript

1 rating

Learn JavaScript basics by writing scripts with variables, data types, comparison and arithmetic operators, type conversion, conditionals and ternaries, and string concatenation.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Iterating Over Data in JavaScript

1 rating

Loop over data in JavaScript with for, for-in, and for-of loops, while loops, nested loops, and break and continue statements, through space-themed challenges.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Getting Started with Java

1 rating

Learn Java fundamentals: write your first program, declare variables and constants, use primitive types and conversions, apply comparison, arithmetic and conditional logic, and concatenate strings with StringBuilder.

• CodeSignal
• 2 hours
• Self-Paced
• Free Certificate

Introduction to Responsive Web Development

1 rating

Build web pages that adapt to any screen: apply media queries, fluid layouts, responsive images and video, box-sizing, and adaptive navigation menus.

• CodeSignal
• 1 hour
• Self-Paced
• Free Certificate