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.

DeepLearning.AI
Skills you'll gain: Retrieval-Augmented Generation, LangChain, AI Orchestration, SQL, LLM Application, Query Languages, Generative AI Agents, OpenAI API, Microsoft Azure, Tool Calling, OpenAI, Natural Language Processing, Large Language Modeling
★ 4.5 (54) · Beginner · Project · Less Than 2 Hours

LearnKartS
Skills you'll gain: Salesforce, User Provisioning, Customer Relationship Management (CRM) Software, Cloud Applications, Email Automation, Account Management, Identity and Access Management, Data Management
★ 3.7 (47) · Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Data Pipelines, Rust (Programming Language), Restful API, Cloud-Based Integration, Amazon Web Services, Data Structures, Secure Coding, Data Processing, Application Programming Interface (API), Data Manipulation, System Programming, Cryptography, Python Programming, Command-Line Interface, Software Testing
★ 3.5 (68) · Intermediate · Course · 1 - 4 Weeks

The Hong Kong University of Science and Technology
Skills you'll gain: Matlab, Engineering Analysis, Mathematical Software, Numerical Analysis, Mathematical Modeling, Applied Mathematics, Simulation and Simulation Software, Differential Equations, Calculus
★ 5 (45) · Intermediate · Course · 1 - 4 Weeks

Universitat Autònoma de Barcelona
Skills you'll gain: Service Design, Hospitality, Hospitality Management, Customer Insights, Customer experience improvement, Service Management, Sustainable Business, Sustainable Development, Corporate Sustainability, Consumer Behaviour, Language Interpretation, Translation, and Studies, Sustainability Standards, Strategic Marketing, Marketing, Communication
★ 4.7 (45) · Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Typography, Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, UI Components, Web Design, Web Design and Development, Front-End Web Development, Animations, Mockups, User Interface (UI), User Interface (UI) Design, Web Development, Color Theory, Debugging
★ 4.5 (53) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Transact-SQL, Transaction Processing, Database Management, Microsoft SQL Servers, Operational Databases, SQL, Data Manipulation, Relational Databases, Database Theory, Data Integrity, Data Access, Generative AI, AI Integrations, Performance Tuning
★ 4.3 (45) · Beginner · Course · 1 - 4 Weeks
University of Illinois Urbana-Champaign
Skills you'll gain: Digital Marketing Tools, Innovation, Marketing, Promotional Strategies, Digital Advertising, Marketing Strategies, Marketing Management, New Product Development, Product Development, Digital Brand Strategy, Strategic Marketing, Digital Media Strategy, Digital Marketing, Consumer Behaviour, Product Promotion, Market Dynamics, Business-To-Consumer, Digital Transformation, Customer Engagement, Branding
★ 4.6 (46) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cryptography, Encryption, Risk Management Framework, Multi-Factor Authentication, Cyber Attacks, Cybersecurity, Identity and Access Management, Authentications, Security Controls, Threat Management, Data Security, Information Privacy, Cyber Risk, Authorization (Computing)
★ 4.6 (42) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: PyTorch (Machine Learning Library), Model Evaluation, Deep Learning, Model Training, Artificial Intelligence and Machine Learning (AI/ML), Fine-tuning, Machine Learning, Machine Learning Algorithms, Artificial Neural Networks, Artificial Intelligence, Model Optimization, Data Preprocessing, Regression Analysis, Software Installation, System Configuration
★ 4.5 (54) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Banking Services, Banking, Regulatory Compliance, Commercial Banking, Compliance Management, Risk Management Framework, Governance Risk Management and Compliance, Investment Banking, Financial Services, Operational Efficiency, Operational Performance Management, Financial Systems, Risk Management, Operational Analysis, Operational Excellence, FinTech, Front Office, Business Operations, Decision Support Systems, Investments
★ 4.3 (15) · Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Image Analysis, Image Quality, Data Analysis Software, Software Installation, Data Analysis, Analysis, Scientific Visualization, Data Processing
★ 4.4 (62) · Beginner · Guided Project · Less Than 2 Hours