CodeSignal Courses

Building Trust Through Ownership

1 rating

Build customer trust by taking ownership, communicating progress, solving issues with integrity, and rebuilding confidence after mistakes.

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

Introduction to Data Cleaning with Python

1 rating

Learn to clean messy datasets in Python by handling missing values, duplicates, outliers, and inconsistent scales with pandas.

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

API Authentication Methods with Python

1 rating

Learn to secure API communication with API keys, session cookies, and JWTs, including login, token refresh, and logout flows.

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

Basic Python and Web Requests

1 rating

Learn to retrieve webpage data with Python requests, handle HTTP responses, and query REST APIs as a foundation for web scraping.

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

Scaling up RAG with Vector Databases

1 rating

Scale Retrieval-Augmented Generation with ChromaDB by chunking documents, managing embeddings, and refining metadata-filtered retrieval and context-rich prompts.

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

Career Certificate

Rust Programming for Beginners

306 ratings at CodeSignal

Learn Rust fundamentals through ownership, data structures, string manipulation, loops, iterators, and object-oriented features.

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

Representing the Executive Through Client Communication

1 rating

Represent executives in client communications with discretion, professionalism, and poise while protecting trust and managing executive time.

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

Career Certificate

Powering Leadership: The Executive Assistant Journey

1 rating

Build the communication, prioritization, adaptability, and meeting-management skills needed to support executives effectively.

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

Agile Fundamentals and Mindset

1 rating

Learn to apply agile values through self-organizing teams, customer-centered value delivery, and continuous adaptation instead of waterfall practices.

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

Career Certificate

Four-Week Coding Interview Prep in Python

1307 ratings at CodeSignal

Prepare for Python coding interviews through foundational exercises, classic coding questions, and complex algorithms.

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

Career Certificate

Mastering Algorithms and Data Structures in JavaScript

943 ratings at CodeSignal

Learn to choose optimal algorithms and data structures in JavaScript, with coverage of hashing, sorting, searching, stacks, queues, and linked lists.

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

Career Certificate

Advanced Coding Interview Preparation with Java

915 ratings at CodeSignal

Advanced Java coding interview preparation focused on algorithms, data structures, task decomposition, and efficient problem-solving techniques.

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

Career Certificate

Fundamental Coding Interview Prep with Java

644 ratings at CodeSignal

Build Java fundamentals and practice coding problems for technical interviews.

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

Career Certificate

Fundamental Coding Interview Preparation with JavaScript

565 ratings at CodeSignal

Prepare for technical coding interviews with JavaScript through syntax review, looping, string operations, type conversions, and interview-focused coding practice.

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

Career Certificate

Deep Dive into Numpy and Pandas

546 ratings at CodeSignal

Develop deep proficiency in NumPy numerical computing and Pandas for data manipulation, cleaning, transformation, wrangling, and analysis.

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