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.

Packt
Skills you'll gain: Open Web Application Security Project (OWASP), Secure Coding, Application Security, Data Security, Cybersecurity, Cyber Attacks, Web Applications, Threat Detection, Security Awareness, Vulnerability Management, Encryption, Authentications, Authorization (Computing), PHP (Scripting Language)
Beginner · Course · 1 - 3 Months

Skills you'll gain: JSON, Data Structures, Javascript, Application Programming Interface (API), Computer Programming, Object Oriented Programming (OOP), Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Preprocessing, Applied Machine Learning, Unsupervised Learning, Correlation Analysis, Data Cleansing, R Programming, Data Quality, Machine Learning, Machine Learning Algorithms, Data Manipulation, Data Mining, Exploratory Data Analysis, Data Integrity
Mixed · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Git (Version Control System), GitHub, GitLab, Version Control, Bitbucket, Software Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Algorithms, Pseudocode, Javascript, Data Structures, Computational Thinking, Performance Tuning, Computer Programming, Solution Design, Object Oriented Programming (OOP), Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Computer Security Awareness Training, Security Awareness, Cyber Attacks, Email Security, Cybersecurity, Malware Protection, Human Factors (Security), Encryption, Threat Detection, Multi-Factor Authentication, Internet Of Things, Information Privacy, Network Security, Personally Identifiable Information, Authentications, Data Security, Mobile Security, Identity and Access Management
Beginner · Course · 3 - 6 Months

Skills you'll gain: Amazon Elastic Compute Cloud, Amazon Web Services, Model Deployment, Tensorflow, Image Analysis, Convolutional Neural Networks, Feature Engineering, Data Preprocessing, Deep Learning, Applied Machine Learning, Application Development, Recurrent Neural Networks (RNNs), Model Evaluation
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Cybersecurity, Cyber Governance, Cyber Attacks, Cyber Security Strategy, Endpoint Security, Threat Detection, Incident Response, Cyber Security Assessment, Malware Protection, Network Security, Computer Security Incident Management, Security Management, Intrusion Detection and Prevention, Firewall, Network Analysis, Encryption
Intermediate · Course · 1 - 3 Months

Skills you'll gain: User Interface (UI), UI Components, Software Design, Maintainability, Application Development, Microsoft Windows, Object Oriented Programming (OOP), Python Programming, Data Persistence
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Business Valuation, Financial Analysis, Financial Modeling, Financial Statement Analysis, Investment Banking, Mergers & Acquisitions, Corporate Finance, Interviewing Skills, Real Estate, Benchmarking, Microsoft Excel
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: File Transfer Protocol (FTP), Transaction Processing, Integration Testing, Data Integration, Data Mapping, Data Validation, Test Case, Middleware, Systems Integration, Databases
Mixed · Course · 1 - 4 Weeks
Skills you'll gain: Organizational Change, Change Management, Google Workspace, Data Migration, Cloud Deployment, User Provisioning, Technical Management, Email Automation, Stakeholder Management, End User Training and Support
Beginner · Course · 1 - 4 Weeks