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.

University of Michigan
Skills you'll gain: Data Literacy, Statistical Hypothesis Testing, Scientific Methods, Data Analysis, Statistical Reporting, Experimentation, Science and Research, Research Design, Analytical Skills, General Science and Research, Research, Peer Review, Probability & Statistics, Journalism, Statistical Inference, Statistical Methods, Media and Communications, Research Methodologies
★ 4.6 (17) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Apache Kafka, Command-Line Interface, Data Pipelines, Java, Java Programming, Enterprise Application Management, Real Time Data, Unix Commands, Data Integration, Distributed Computing, Performance Tuning, Software Installation
★ 4.5 (11) · Intermediate · Course · 3 - 6 Months

Skills you'll gain: TypeScript, Object Oriented Design, Node.JS, Role-Based Access Control (RBAC), Object Oriented Programming (OOP), Webpack, React Redux, Back-End Web Development, React.js, Full-Stack Web Development, Web Development, MongoDB, Front-End Web Development, Javascript, Application Programming Interface (API), Software Design Patterns, API Design, Programming Principles, Software Development, Debugging
★ 4.7 (6) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Metasploit, Open Web Application Security Project (OWASP), Penetration Testing, Exploit development, Vulnerability Scanning, Exploitation techniques, Security Testing, Vulnerability Assessments, Hardening, Brute-force attacks, Web Applications, Cybersecurity, Firewall, Network Security, Wireless Networks, Network Analysis, SQL
★ 3.8 (9) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), HTML and CSS, Web Applications, Web Design and Development, Javascript, Frontend Integration, Web Design, Web Development, Front-End Web Development, Game Design, Program Development
★ 4.2 (12) · Intermediate · Guided Project · Less Than 2 Hours

LearnKartS
Skills you'll gain: Salesforce, Salesforce Development, Data Import/Export, Customer Relationship Management, Data Maintenance, Customer Relationship Management (CRM) Software, Data Management, Dashboard, System Configuration, Workflow Management, Data Validation, Research Reports, Cloud Computing, Business Process Automation, Data Integrity, User Accounts, Data Modeling, Administration, Role-Based Access Control (RBAC), Data Security
★ 4.7 (6) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Pandas (Python Package), Pivot Tables And Charts, Data Manipulation, Data Import/Export, NumPy, Time Series Analysis and Forecasting, Business Reporting, Data Wrangling, Jupyter, Data Visualization, Microsoft Excel, Plot (Graphics), Data Transformation, Data Analysis, Data Cleansing, Data Preprocessing, Analytics, Performance Reporting, Data Processing, Python Programming
★ 4.8 (23) · Beginner · Specialization · 1 - 3 Months

Alex Genadinik
Skills you'll gain: Instagram, Facebook, TikTok, Meta Ads Manager, Copywriting, Social Media Marketing, Social Media, Social Media Strategy, Video Production, Social Media Content, Social Media Management, Search Engine Optimization, Paid media, Marketing, Google Ads, Keyword Research, Social Media Campaigns, Advertising, Driving engagement, Advertising Campaigns
Beginner · Specialization · 3 - 6 Months

Packt
Skills you'll gain: Ruby (Programming Language), File I/O, Object Oriented Programming (OOP), Ruby on Rails, Debugging, Test Tools, Application Design, Code Reusability, Programming Principles, Test Case, Software Documentation, Development Environment, Integrated Development Environments, Computer Programming, Data Structures, Apple Xcode, Web Development, Software Installation, Technical Documentation, Computational Logic
★ 4.4 (18) · Intermediate · Specialization · 3 - 6 Months

Jordan University of Science and Technology
Skills you'll gain: Cardiology, Anatomy, Hemodynamics, Pathology, Physiology, Neurology, Human Musculoskeletal System, Capillary, Cell Biology, Endocrinology, Biology
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: TypeScript, Debugging, Javascript, Software Development
★ 4.1 (15) · Beginner · Guided Project · Less Than 2 Hours

University of Michigan
Skills you'll gain: Debugging, LLM Application, Data-oriented programming, Code Reusability, Python Programming, Data Manipulation, Data Analysis, Functional Design
★ 4.4 (8) · Intermediate · Course · 1 - 4 Weeks