Data Structures and Algorithms courses can help you learn about arrays, linked lists, trees, and graph structures, along with sorting and searching algorithms. You can build skills in problem-solving, optimizing code efficiency, and analyzing algorithm complexity. Many courses introduce tools like Python, Java, or C++ for implementing these concepts, as well as platforms for coding challenges that reinforce your understanding through practical application.

JetBrains
Skills you'll gain: Kotlin, Object Oriented Programming (OOP), Java, Java Programming, Spring Framework, Android Development, IntelliJ IDEA, Functional Design, Interoperability, Unit Testing
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Video Editing, Timelines, Video Production, Editing, Productivity, Storytelling
Beginner · Course · 1 - 4 Weeks

Universitat de Barcelona
Skills you'll gain: Telecommunications, Physical Science, Time Series Analysis and Forecasting, Safety Assurance, Global Positioning Systems, Predictive Modeling, Communication Systems, Mathematical Modeling, Electronic Systems
Intermediate · Course · 1 - 3 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Programming Principles, Java Programming, Java, Computer Programming, Data Structures, Development Environment, Problem Solving, Algorithms, Eclipse (Software), Debugging
Beginner · Course · 1 - 3 Months

Skills you'll gain: Retrieval-Augmented Generation, Vector Databases, Embeddings, Tool Calling, AI Workflows, Generative AI Agents, Document Management, Query Languages, Text Mining, Context Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Apache Cassandra, Query Languages, Data Modeling, Operational Databases, Back-End Web Development, Distributed Computing, Full-Stack Web Development, Performance Tuning, NoSQL, Data Manipulation, Database Design, Scalability, Data Integrity, Data Management, Java
Beginner · Specialization · 1 - 3 Months

Technical University of Munich (TUM)
Skills you'll gain: Traffic Flow Optimization, Transportation Operations, Sustainable Design, Environmental Issue, Sustainable Engineering, Feasibility Studies, Emerging Technologies, Regulatory Compliance, Concept Of Operations, Data-Driven Decision-Making, Market Dynamics, Human Factors, Safety Standards
Intermediate · Course · 1 - 3 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Safety Culture, Drive Engagement, Team Management, Team Leadership, Team Building, Diversity and Inclusion, Business Ethics, Team Motivation, Teamwork, Diversity Equity and Inclusion Initiatives, Employee Engagement, Creativity, Ethical Standards And Conduct, Innovation, Motivational Skills, Problem Solving, Adaptability, Culture, Leadership Development, Stress Management
Build toward a degree
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: C# (Programming Language), Object Oriented Programming (OOP), Software Design Patterns, Software Architecture, Software Design, Secure Coding, Computer Programming, System Design and Implementation, Data Integrity, Maintainability, Scalability, Programming Principles, Code Review, Software Documentation, AI Workflows, Debugging
Beginner · Course · 1 - 3 Months

Skills you'll gain: Virtual Reality, UI Components
Intermediate · Course · 3 - 6 Months

Alex Genadinik
Skills you'll gain: Overcoming Objections, Consultative Selling, Closing (Sales), Sales Strategy, Active Listening, Sales, General Sales Practices, Sales Process, Sales Prospecting, Rapport Building, Empathy, Customer Relationship Management
Mixed · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Dimensionality Reduction, Unsupervised Learning, Applied Machine Learning, Statistical Machine Learning, Machine Learning, Regression Analysis, Supervised Learning, Data Science, Decision Tree Learning, Statistical Analysis, Classification Algorithms, Predictive Modeling, Artificial Neural Networks, Data Processing, Logistic Regression
Build toward a degree
Intermediate · Course · 1 - 3 Months