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.

LearnQuest
Skills you'll gain: Data Preprocessing, Feature Engineering, Model Evaluation, Bioinformatics, Exploratory Data Analysis, Random Forest Algorithm, Pandas (Python Package), Scikit Learn (Machine Learning Library), Applied Machine Learning, Data Manipulation, Data Processing, Dimensionality Reduction, Data Cleansing, Model Optimization, Keras (Neural Network Library), Machine Learning Algorithms, Data Transformation, Model Training, Machine Learning, Data Science
★ 3.3 (103) · Beginner · Specialization · 3 - 6 Months

Duke University
Skills you'll gain: Debugging, Code Reusability, Algorithms, Problem Solving, Data Processing, Computational Logic, Python Programming, Software Development, Data Analysis, Scripting Languages
★ 4 (70) · Beginner · Course · 1 - 4 Weeks

Deep Teaching Solutions
Skills you'll gain: Critical Thinking, Critical Thinking and Problem Solving, Cognitive flexibility, Decision Making, Emotional Intelligence, Mental Concentration, Decision Intelligence, AI literacy, ChatGPT, Self-Awareness
★ 4.7 (120) · Beginner · Course · 1 - 4 Weeks

United Cities and Local Governments of Africa
Skills you'll gain: Climate Change Adaptation, Climate Change Programs, Climate Change Mitigation, Environmental Policy, Social Determinants Of Health, Land Management, Environmental Resource Management, Sustainable Development, Decision Support Systems, Governance, Vulnerability, Socioeconomics, Economic Development, Hazard Analysis
★ 4.7 (128) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: PHP (Scripting Language), MySQL, WordPress, Web Applications, Application Programming Interface (API), Web Development, Content Management Systems, Linux Commands, DevOps, Linux, Web Design and Development, Devops Tools, Frontend Integration, Full-Stack Web Development, Data Store, Command-Line Interface, Back-End Web Development, Database Development, Server Side, Scripting
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Node.JS, Full-Stack Web Development, Front-End Web Development, Server Side, Application Deployment, Back-End Web Development, JavaScript Frameworks, Cloud Deployment, Web Applications, UI Components, Authentications, User Accounts, Database Development, User Interface (UI), User Interface and User Experience (UI/UX) Design, Payment Systems, Development Environment
Intermediate · Course · 3 - 6 Months

Illinois Tech
Skills you'll gain: Web Development, Database Design, Relational Databases, Web Applications, Web Development Tools, Databases, Web Design and Development, Full-Stack Web Development, Database Systems, Database Development, Application Deployment, Server Side, HTML and CSS, Cloud Deployment, Back-End Web Development, Scripting Languages, Application Development, Cloud Applications, Javascript, Cloud Computing
★ 4.5 (51) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Risk Management, Risk Analysis, Agile Project Management, Project Risk Management, Agile Methodology, Root Cause Analysis, Risk Management Framework, Risk Mitigation, Contingency Planning, Risk Control, Risk Appetite, Risk Modeling, Continuous Monitoring, Business Risk Management, Performance Analysis, Agile Product Development, Communication Planning, Stakeholder Management, Project Management, Project Management Institute (PMI) Methodology
★ 4.8 (126) · Intermediate · Specialization · 1 - 3 Months

Corporate Finance Institute
Skills you'll gain: Microsoft Excel, Pivot Tables And Charts, Spreadsheet Software, Dashboard, Data Transformation, Dashboard Creation, Data Analysis, Excel Formulas, Data Visualization Software, Data Presentation, Data Manipulation
★ 4.8 (92) · Beginner · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Extract, Transform, Load, Data Warehousing, Data Mining, Business Intelligence, Star Schema, Snowflake Schema, Data Modeling, Data Architecture, Unsupervised Learning, Business Analytics, Data-Driven Decision-Making, Machine Learning Methods, Databases, Predictive Modeling, Cloud Computing, Supervised Learning, Classification Algorithms
★ 4.6 (131) · Beginner · Course · 1 - 4 Weeks

Salesforce
Skills you'll gain: Verbal Communication Skills, Interviewing Skills, Professional Development, Technical Sales, Communication, Telecommuting, Storytelling, Sales Development, Sales, Portfolio Management, Branding, Personal Attributes, LinkedIn, Professionalism, Empathy
★ 4.4 (90) · Beginner · Course · 1 - 4 Weeks

Anthropic
Skills you'll gain: Prompt Engineering, AI Workflows, Agentic Workflows, Claude Code, Model Context Protocol, Retrieval-Augmented Generation, Anthropic Claude, Agentic systems, Application Programming Interface (API), Tool Calling, Context Management, Embeddings, Model Evaluation
★ 4.7 (80) · Beginner · Course · 1 - 3 Months