Code Refactoring Course
Master legacy code with the Code Refactoring Course. Learn test-first refactoring, clean discount logic, CI-friendly workflows, and clear documentation so you can ship safer changes, reduce bugs, and keep complex systems easy to evolve.

flexible workload of 4 to 360h
valid certificate in your country
What will I learn?
This Code Refactoring Course shows you how to safely improve legacy code while preserving behavior. You will learn to spot code smells, design small, pure functions, and restructure discount calculations with clear responsibilities. Through focused unit tests, characterization tests, CI workflows, and concise documentation, you gain a practical workflow to refactor faster, reduce bugs, and make future changes easier.
Elevify advantages
Develop skills
- Legacy refactoring: clean up old modules fast without breaking behavior.
- Unit testing: design strong characterization tests for fragile legacy code.
- Discount logic design: decompose pricing, coupons, and VIP rules with clarity.
- Test automation: set up CI workflows to guard refactors in real projects.
- Code documentation: ship refactored artifacts with clear, concise explanations.
Suggested summary
Before starting, you can change the chapters and the workload. Choose which chapter to start with. Add or remove chapters. Increase or decrease the course workloadWhat our students say
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