Back end courses can help you learn server-side programming, database management, API development, and cloud computing. You can build skills in data modeling, performance optimization, and security practices. Many courses introduce tools like Node.js, Express, and SQL databases, along with methods for integrating third-party services and managing user authentication.

Johns Hopkins University
Skills you'll gain: Computer Vision, Model Evaluation, PyTorch (Machine Learning Library), Supervised Learning, Unsupervised Learning, Image Analysis, Applied Machine Learning, Data Preprocessing, Dimensionality Reduction, Machine Learning Methods, Reinforcement Learning, Feature Engineering, Machine Learning Algorithms, Convolutional Neural Networks, Regression Analysis, Data Processing, Model Training, Machine Learning, Deep Learning, Model Optimization
★ 3.4 (16) · Intermediate · Specialization · 3 - 6 Months

Scrimba
Skills you'll gain: Responsive Web Design, HTML and CSS, Cascading Style Sheets (CSS), Web Design, Web Design and Development, Front-End Web Development, Hypertext Markup Language (HTML), Web Development, Application Deployment, Cloud Deployment, User Interface (UI), User Interface (UI) Design, Typography, Cloud Hosting, Software Engineering
★ 4.7 (29) · Intermediate · Specialization · 1 - 4 Weeks

Scrimba
Skills you'll gain: Object Oriented Programming (OOP), File I/O, Python Programming, Data Structures, Computer Programming, Software Engineering, Performance Tuning, Web Development, Performance Testing, Debugging, Web Development Tools
★ 4.8 (25) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Image Analysis, Model Training, Supervised Learning, Applied Machine Learning, Model Evaluation, Machine Learning Methods, Demand Planning, Artificial Intelligence and Machine Learning (AI/ML), Predictive Modeling, Anomaly Detection, Artificial Intelligence, Convolutional Neural Networks, Model Optimization, Statistical Machine Learning, Supply Chain Management, Machine Learning, Computer Vision, Machine Learning Algorithms, Supply Chain, Natural Language Processing
★ 3.2 (15) · Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Kubernetes, Application Deployment, Cloud-Native Computing, Cloud Deployment, IT Automation, Containerization, Scalability, Devops Tools, Configuration Management, DevOps, Application Lifecycle Management, System Configuration, Security Controls, Memory Management, Data Persistence
★ 4.1 (20) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Process Mapping, Lean Six Sigma, Six Sigma Methodology, Quality Management, Process Analysis, Quality Improvement, Quality Monitoring, Data-Driven Decision-Making, Process Flow Diagrams, Pareto Chart, Run Chart, Statistical Process Controls, Process Improvement, Statistical Analysis, Product Quality (QA/QC), Process Improvement and Optimization, Quality Assessment, Quality Control, Data Analysis, Data Analysis Software
★ 4.6 (42) · Mixed · Course · 1 - 4 Weeks
Skills you'll gain: Data Literacy, Data Collection, Research Design, Research Methodologies, Qualitative Research, Data Synthesis, Data Ethics, Quantitative Research, Business Research, Research Reports, Research and Design, Data Integration, Data Presentation, Data Storytelling, Research, Report Writing, Science and Research, Stakeholder Communications, Technical Communication, Analysis
★ 4.3 (7) · Beginner · Course · 1 - 4 Weeks

Macquarie University
Skills you'll gain: Cyber Security Policies, Cyber Security Strategy, Cyber Risk, Security Strategy, Cybersecurity, Cyber Security Assessment, Organizational Change, Change Management, Risk Management
★ 4.9 (8) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Angular, JavaScript Frameworks, Model View Controller, Javascript, Web Development, Software Development
★ 4.5 (11) · Intermediate · Guided Project · Less Than 2 Hours

University of Colorado Boulder
Skills you'll gain: Classification Algorithms, Analytical Skills, Data Analysis, Model Evaluation, Logistic Regression, Applied Machine Learning, Supervised Learning, Decision Tree Learning, Machine Learning Algorithms, Machine Learning Methods, Predictive Modeling, Feature Engineering, Fine-tuning, Model Training, Bayesian Statistics
★ 5 (7) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Extensible Markup Language (XML), Extensible Languages and XML, Cascading Style Sheets (CSS), HTML and CSS, Code Reusability, Data Validation, Data Import/Export, Data Mapping, Verification And Validation, Data Sharing, Hypertext Markup Language (HTML), Interoperability, Computational Logic, Technical Documentation, Data Management, Scripting
★ 4.5 (80) · Beginner · Specialization · 3 - 6 Months

Edureka
Skills you'll gain: Computer Security Incident Management, IT Security Architecture, Incident Management, Cloud Infrastructure, Cloud Standards
★ 4.2 (12) · Beginner · Course · 1 - 4 Weeks