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 Colorado Boulder
Skills you'll gain: Scientific Visualization, NumPy, Data Visualization, Debugging, Matplotlib, Numerical Analysis, Engineering Calculations, Mathematical Software, Code Reusability, Integrated Development Environments, Computational Thinking, Engineering Analysis, Programming Principles, Data Analysis, Computer Programming, Model Optimization
★ 4.8 (18) · Beginner · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Secure Coding, Application Security, Exploitation techniques, Web Applications, Javascript, Web Development, Node.JS, Java Programming
★ 4.7 (36) · Intermediate · Course · 1 - 4 Weeks

Automatic Data Processing, Inc. (ADP)
Skills you'll gain: Recruitment, Interviewing Skills, Recruitment Strategies, Talent Acquisition, Employee Onboarding, Decision Making, Resource Utilization
★ 4.1 (29) · Intermediate · Course · 1 - 4 Weeks

Infosec
Skills you'll gain: Secure Coding, Distributed Denial-Of-Service (DDoS) Attacks, Application Security, Authorization (Computing), Authentications, Data Validation, Encryption, Security Software, Security Controls, Data Security, Vulnerability Scanning, Endpoint Security, Role-Based Access Control (RBAC), Intrusion Detection and Prevention, Security Awareness, Cybersecurity, Configuration Management, Package and Software Management, Web Applications, Web Development Tools
★ 4.5 (25) · Beginner · Specialization · 1 - 3 Months

University of London
Skills you'll gain: Leadership Studies, Leadership and Management, Organizational Structure, Business Leadership, Organizational Leadership, Performing Arts, Music, Drive Engagement, Motivational Skills, Business Management, Storytelling, Oral Expression, Leadership, People Management, Productivity, Musical Composition, Workforce Management, Writing and Editing, Organizational Development, Employee Engagement
★ 4.8 (14) · Beginner · Course · 1 - 4 Weeks

Kennesaw State University
Skills you'll gain: Overcoming Objections, Closing (Sales), Selling Techniques, Consultative Selling, Sales Presentation, Sales, General Sales Practices, Sales Process, Sales Presentations, Sales Strategy, Solution Selling, Sales Prospecting, Customer Relationship Building, Prospecting and Qualification, Rapport Building, Customer Retention, Negotiation, Return On Investment
★ 4.8 (25) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Backlogs, Stakeholder Communications, Virtual Teams, Stakeholder Management, Agile Project Management, Stakeholder Engagement, Agile Software Development, Agile Product Development, Agile Methodology, Communication, Communication Strategies, Collaborative Software, Cross-Functional Collaboration, Cross-Functional Team Leadership, Negotiation, Conflict Management, Product Management, Product Requirements, User Story, Team Oriented
★ 4.8 (17) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Application Deployment, Data Maintenance, Network Architecture, Data Storage, Network Infrastructure, Scalability, Issue Tracking, Public Cloud, Information Assurance, General Networking, Network Monitoring, Data Security, Serverless Computing, Network Planning And Design, Network Security, Data Loss Prevention, Remote Access Systems, Hybrid Cloud Computing, Dashboard Creation
★ 4 (23) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: JUnit, Apache Maven, Model View Controller, Unit Testing, Frontend Integration, Spring Boot, Restful API, Data Persistence, Web Services, Software Testing, Java Programming, Object-Relational Mapping, Java, Back-End Web Development, Secure Coding, Authentications, Data Modeling, Business Logic
★ 4.6 (28) · Mixed · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: JSON, Restful API, API Design, Web Applications, Application Programming Interface (API), Responsive Web Design, Cascading Style Sheets (CSS), Dashboard Creation, Event-Driven Programming, HTML and CSS, Javascript, Wireframing, Web Servers, Web Development, Real Time Data, Game Design, Hypertext Markup Language (HTML), Servers, Software Development
★ 4.8 (19) · Intermediate · Specialization · 1 - 4 Weeks

Coursera
Skills you'll gain: Google Gemini, Gemini, Application Deployment, Responsible AI, Software Development Tools, Cloud Development, Google Cloud Platform, Cloud Deployment, Generative AI, AI literacy, Prompt Engineering, AI Integrations, Debugging, Application Development
★ 4.9 (31) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Social Network Analysis, Network Analysis, Responsible AI, Social Media Analytics, Graph Theory, Machine Learning Methods, R (Software), Machine Learning, Machine Learning Software, Model Training, Machine Learning Algorithms, Model Optimization, Model Evaluation, Social Sciences, Statistical Analysis, Amazon Web Services, Tensorflow, Data Ethics, Large Language Modeling, Applied Machine Learning
★ 4.4 (15) · Intermediate · Specialization · 3 - 6 Months