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Inicio / Cursos / Ultimate Clean Code Masterclass for 2026
Impartido por Elegant Code – Krystyna ŚlusarczykPago único de $2,800 MXN · acceso por 12 meses

Ultimate Clean Code Masterclass for 2026

The highest-rated clean code course. Master SOLID, avoid code smells, and refactor like a pro. Any language welcome.

Certificado oficial emitido por la SEPA través del Gobierno del Estado de México
12 meses de acceso En línea · 60 h 13 unidades
Qué aprenderás

Lo que serás capaz de hacer

Why this course? Clean code isn't just about aesthetics — it's about writing software that's easy to read, modify, and scale. The difference between a codebase that's a pleasure to work in and one that makes you dread every pull request comes down to habits and principles. This course teaches you both. With over 10 years of experience in the software industry, including working as a .NET Technical Lead , I've seen firsthand how clean code can make or break a project. This course distills years of industry knowledge into practical, actionable lessons . This is the #1 rated clean code course on Udemy — and that's not by accident. It's built around one idea: clean code is a skill you practice, not a book you read. What makes this course different? Most clean code content stays at the surface — "use good names," "keep functions short." This course goes deeper: 8 real-world refactoring case studies — take messy, hard-to-maintain code and transform it step by step into clean, professional solutions. 5 in-browser refactoring challenges — practice spotting and fixing code smells yourself, not just watching someone else do it. Thorough SOLID deep dive — not a 10-minute overview, but a practical exploration that shows you why each principle exists and when to apply it. These aren't just interview topics — they're tools you'll actually use in your code every day. "Does clean code still matter in the age of AI?" Absolutely . AI can generate code that looks clean — nice variable names, tidy formatting. But truly clean code requires a deep understanding of the whole project: its architecture, its dependencies, how pieces fit together, and how they'll change over time. That's something AI often gets wrong, because it doesn't see the bigger picture the way you do. Clean code isn't just about how a single function reads — it's about design decisions that make the entire codebase easier to work with. That's a human skill, and this course teaches it. What's inside? 13.5 hours of video covering everything you need to write professional-quality code: Naming, formatting, and readability — the foundations that make code easy to understand at a glance Code smells and antipatterns — what they are, why they happen, and how to fix them SOLID principles — with practical, real-world examples for each one Refactoring techniques — systematic approaches to improving existing code Design principles and best practices — the habits that separate good developers from great ones 21 quizzes to check your understanding along the way Works for any language All examples are demonstrated in C#, but every concept is universal. Whether you write Python, Java, JavaScript, TypeScript, or anything else — the principles of clean code apply everywhere. Many students take this course specifically because it focuses on the thinking behind clean code, not language-specific tricks. Not sure if this is for you? This course works for any level. If you're a beginner, you'll form good habits from the start — it's much easier to learn clean code early than to unlearn bad habits later. If you're experienced, you'll sharpen your skills, fill gaps, and gain vocabulary to articulate why something should be done a certain way in code reviews. This course is covered by Udemy’s 30-day Refund Policy , so you can try it out risk-free.

  • The #1 rated clean code course on Udemy — built on 10+ years of real-world software engineering experience.
  • Recognize and fix code smells — learn to spot the warning signs that your code needs refactoring.
  • Apply SOLID principles with confidence — not just acronym definitions, but practical examples you can use tomorrow.
  • Refactor messy code into clean, maintainable solutions through 8 real-world case studies.
  • Write code that your teammates will thank you for — readable, well-structured, and easy to modify.
  • Practice with 5 in-browser refactoring challenges to reinforce every concept.

Temario

UNIDAD 1 - Introduction · 8 lecciones

UNIDAD 1 - Introduction

  • Welcome! Basic information & how to get helpVideo · 2 min
  • 50 seconds about your instructorVideo · 1 min
  • 149 seconds about this courseVideo · 2 min
  • 120 seconds about time optimizationVideo · 2 min
  • Accessing the codeVideo · 3 min
  • To my “Ultimate C# Masterclass” learnersVideo · 2 min
  • ResourcesLectura · 0 min
  • Coding exercises troubleshootingLectura · 0 min
UNIDAD 2 - The importance of clean code · 9 lecciones

UNIDAD 2 - The importance of clean code

  • Before we start: essential vocabularyVideo · 8 min
  • The importance of clean codeVideo · 6 min
  • Bad decisions related to code qualityVideo · 4 min
  • Tech debtVideo · 3 min
  • Being professionalVideo · 3 min
  • What is clean code?Video · 5 min
  • Good and bad code - comparisonVideo · 3 min
  • Clean code and AIVideo · 7 min
  • The importance of clean codeCuestionario · 0 min
UNIDAD 3 - Naming · 36 lecciones

UNIDAD 3 - Naming

  • The importance of meaningful namesVideo · 3 min
  • Naming fundamentalsVideo · 4 min
  • Following the conventionVideo · 4 min
  • Why do we use bad names?Video · 5 min
  • Renaming. The Boy Scout ruleVideo · 4 min
  • Dealing with problematic namingVideo · 4 min
  • Expressive namesVideo · 3 min
  • Long and short namesVideo · 6 min
  • The Principle of Least SurpriseVideo · 7 min
  • Naming fundamentalsCuestionario · 0 min
  • Refactoring challenges guideLectura · 0 min
  • Coding exercises guideVideo · 7 min
  • (C#) Naming - refactoring challenge 1Actividad · 0 min
  • (Java) Naming - refactoring challange 1Actividad · 0 min
  • (Python) Naming - refactoring challenge 1Actividad · 0 min
  • Semantic correctnessVideo · 4 min
  • HomonymsVideo · 2 min
  • SynonymsVideo · 4 min
  • ConsistencyVideo · 4 min
  • Matching pluralityVideo · 3 min
  • The natural language we use in codeVideo · 3 min
  • Imitating the spoken languageVideo · 3 min
  • Advanced namingCuestionario · 0 min
  • Bad names - meaningless wordsVideo · 3 min
  • Bad names - overspecific namesVideo · 4 min
  • Bad names - Hungarian notationVideo · 3 min
  • Bad names - confusing namesVideo · 3 min
  • Bad names - abbreviationsVideo · 4 min
  • Bad namesCuestionario · 0 min
  • Reasonable abbreviations. Conventional namesVideo · 3 min
  • ContextVideo · 4 min
  • Refactoring case studies - introductionVideo · 2 min
  • Refactoring case study: NamingVideo · 9 min
  • (C#) Naming - refactoring challenge 2Actividad · 0 min
  • (Java) Naming - refactoring challenge 2Actividad · 0 min
  • (Python) Naming - refactoring challenge 2Actividad · 0 min
UNIDAD 4 - Functions · 29 lecciones

UNIDAD 4 - Functions

  • Functions fundamentalsVideo · 5 min
  • Good signatures of methodsVideo · 3 min
  • Number of parametersVideo · 3 min
  • Fewer parameters - splitting the methodVideo · 2 min
  • Fewer parameters - bundling related parametersVideo · 3 min
  • Fewer parameters - avoiding boolean parametersVideo · 3 min
  • Fewer parameters - bad practicesVideo · 6 min
  • Order of parametersVideo · 2 min
  • SignaturesCuestionario · 0 min
  • Ref and out parameters (C# specific topic)Video · 6 min
  • Small methodsVideo · 3 min
  • One method, one jobVideo · 3 min
  • Achieving methods focused on one task onlyVideo · 3 min
  • Refactoring case study: One method, one jobVideo · 3 min
  • Levels of abstractionVideo · 4 min
  • Composing different levels of abstractionVideo · 3 min
  • Levels of abstraction within methodsVideo · 4 min
  • Methods size & levels of abstractionCuestionario · 0 min
  • Order of methodsVideo · 4 min
  • Independence of methodsVideo · 4 min
  • Pure functionsVideo · 5 min
  • The benefits of pure functionsVideo · 5 min
  • High-quality methodsCuestionario · 0 min
  • Refactoring case study: Methods - introductionVideo · 4 min
  • Refactoring case study: Methods - signatureVideo · 3 min
  • Refactoring case study: Methods - bodyVideo · 11 min
  • (C#) Refactoring challenge - functionsActividad · 0 min
  • (Java) Refactoring challenge - functionsActividad · 0 min
  • (Python) Refactoring challenge - functionsActividad · 0 min
UNIDAD 5 - Code formatting · 13 lecciones

UNIDAD 5 - Code formatting

  • The importance of code formattingVideo · 2 min
  • Different formatting styles and the value of consistencyVideo · 4 min
  • Code formatting toolsVideo · 3 min
  • IndentationVideo · 3 min
  • Code blocksVideo · 3 min
  • Breaking the linesVideo · 4 min
  • Vertical formattingVideo · 4 min
  • Code formattingCuestionario · 0 min
  • Refactoring case study: Code formatting - codeVideo · 4 min
  • Refactoring case study: Code formattingVideo · 8 min
  • (C#) Refactoring challenge - code formattingActividad · 0 min
  • (Java) Refactoring challenge - code formattingActividad · 0 min
  • (Python) Refactoring challenge - code formattingActividad · 0 min
UNIDAD 6 - SOLID principles · 36 lecciones

UNIDAD 6 - SOLID principles

  • Classes fundamentalsVideo · 6 min
  • Introduction to SOLID principlesVideo · 1 min
  • S - Single Responsibility Principle - theoryVideo · 11 min
  • S - Single Responsibility Principle - code & refactoringVideo · 5 min
  • S - Single Responsibility Principle - Recognizing single responsibilityVideo · 7 min
  • S - Single Responsibility Principle - One reason to changeVideo · 4 min
  • S - Single Responsibility PrincipleCuestionario · 0 min
  • Abstract typesVideo · 7 min
  • O - Open-closed Principle - theoryVideo · 6 min
  • O - Open-closed Principle - codeVideo · 5 min
  • O - Open-closed Principle - refactoringVideo · 9 min
  • O - Open-closed Principle - limitations - toggle mechanismVideo · 5 min
  • O - Open-closed Principle - limitations - can’t predict all the changesVideo · 5 min
  • O - Open-closed Principle - limitations - practicalityVideo · 6 min
  • O - Open-closed PrincipleCuestionario · 0 min
  • L - Liskov Substitution Principle - theoryVideo · 9 min
  • L - Liskov Substitution Principle - violation of the interfaceVideo · 4 min
  • L - Liskov Substitution Principle - violation of the interface - refactoringVideo · 12 min
  • L - Liskov Substitution Principle - runtime type switchingVideo · 5 min
  • L - Liskov Substitution Principle - runtime type switching - refactoringVideo · 9 min
  • L - Liskov Substitution Principle - condition strengthened for subtypeVideo · 4 min
  • L - Liskov Substitution Principle - condition strengthened for subtype - refac.Video · 8 min
  • L - Liskov Substitution PrincipleCuestionario · 0 min
  • I - Interface Segregation Principle - theoryVideo · 9 min
  • I - Interface Segregation Principle - codeVideo · 5 min
  • I - Interface Segregation Principle - refactoringVideo · 5 min
  • I - Interface Segregation Principle - reasoningVideo · 9 min
  • I - Interface Segregation PrincipleCuestionario · 0 min
  • D - Dependency Inversion Principle - theoryVideo · 13 min
  • D - Dependency Inversion Principle - relationship with Dependency InjectionVideo · 5 min
  • D - Dependency Inversion Principle - dynamic dependency creationVideo · 10 min
  • D - Dependency Inversion Principle - code & refactoringVideo · 7 min
  • D - Dependency Inversion PrincipleCuestionario · 0 min
  • Refactoring case study: SOLID principles - codeVideo · 7 min
  • Refactoring case study: SOLID principles - part 1Video · 11 min
  • Refactoring case study: SOLID principles - part 2Video · 8 min
UNIDAD 7 - Static methods · 7 lecciones

UNIDAD 7 - Static methods

  • When to make methods static? Private methodsVideo · 3 min
  • The risk of making public methods staticVideo · 7 min
  • When to make methods static? Public methodsVideo · 4 min
  • Obscuring the dependency graphVideo · 5 min
  • Obscuring the dependency graph - why is it bad?Video · 5 min
  • Transparent dependency graphVideo · 8 min
  • Static methodsCuestionario · 0 min
UNIDAD 8 - Classes - making them smaller · 13 lecciones

UNIDAD 8 - Classes - making them smaller

  • Benefits of small classes. God class antipatternVideo · 7 min
  • Not all large classes are badVideo · 7 min
  • Making classes smaller - bad practicesVideo · 6 min
  • Making classes smaller - good practices - namesVideo · 6 min
  • Making classes smaller - good practices - data usage & dependenciesVideo · 4 min
  • Making classes smaller - good practices - frequent changes in one areaVideo · 5 min
  • Making classes smaller - good practices - multiple levels of abstractionVideo · 5 min
  • Can we have too many classes?Video · 6 min
  • The size of classesCuestionario · 0 min
  • Refactoring case study: Making classes smaller - codeVideo · 5 min
  • Refactoring case study: Making classes smaller - part 1Video · 5 min
  • Refactoring case study: Making classes smaller - part 2Video · 3 min
  • Refactoring case study: Making classes smaller - part 3Video · 5 min
UNIDAD 9 - Classes - design & formatting · 20 lecciones

UNIDAD 9 - Classes - design & formatting

  • Order of class membersVideo · 6 min
  • One class, one fileVideo · 5 min
  • Folder structure within projectsVideo · 8 min
  • ConsistencyVideo · 5 min
  • CouplingVideo · 4 min
  • Refactoring the code to achieve loose couplingVideo · 5 min
  • Identifying and fixing tight couplingVideo · 5 min
  • Class design & formattingCuestionario · 0 min
  • Law of DemeterVideo · 6 min
  • CohesionVideo · 9 min
  • DRY - Don’t Repeat Yourself - repeating business logicVideo · 4 min
  • DRY - Don’t Repeat Yourself - repeating codeVideo · 3 min
  • DRY - Don’t Repeat Yourself - when it’s OK to repeat the codeVideo · 6 min
  • Avoiding BDUF (Big Design Up Front). YAGNIVideo · 7 min
  • KISS (Keep It Simple, Stupid)Video · 3 min
  • Class design principlesCuestionario · 0 min
  • Refactoring case study: Classes - design & formatting - codeVideo · 8 min
  • Refactoring case study: Classes - design & formatting - part 1Video · 5 min
  • Refactoring case study: Classes - design & formatting - part 2Video · 10 min
  • Refactoring case study: Classes - design & formatting - part 3Video · 3 min
UNIDAD 10 - Classes - inheritance · 5 lecciones

UNIDAD 10 - Classes - inheritance

  • Composition over inheritanceVideo · 6 min
  • The issues of inheritanceVideo · 7 min
  • Replacing inheritance with compositionVideo · 5 min
  • The benefits of compositionVideo · 5 min
  • InheritanceCuestionario · 0 min
UNIDAD 11 - Comments · 8 lecciones

UNIDAD 11 - Comments

  • CommentsVideo · 3 min
  • The worst commentsVideo · 4 min
  • The reasonable commentsVideo · 6 min
  • CommentsCuestionario · 0 min
  • Refactoring case studyLectura · 0 min
  • (C#) Refactoring challenge - commentsActividad · 0 min
  • (Java) Refactoring challenge - commentsActividad · 0 min
  • (Python) Refactoring challenge - commentsActividad · 0 min
UNIDAD 12 - Clean tests & testability · 19 lecciones

UNIDAD 12 - Clean tests & testability

  • Unit tests fundamentalsVideo · 3 min
  • Mocks fundamentalsVideo · 4 min
  • The importance of unit testsVideo · 3 min
  • How unit testing affects code quality - safety netVideo · 3 min
  • How unit testing affects code quality - better designVideo · 5 min
  • How unit testing affects code quality - Test-Driven Development (TDD)Video · 5 min
  • The importance of clean testsVideo · 4 min
  • Tests readabilityVideo · 6 min
  • Good practices for writing clean testsVideo · 6 min
  • Tests & qualityCuestionario · 0 min
  • Testability pitfalls - static methodsVideo · 5 min
  • Testability pitfalls - breaking the Dependency Inversion PrincipleVideo · 2 min
  • Testability pitfalls - not using Dependency InjectionVideo · 2 min
  • Testability pitfalls - constructor does real workVideo · 7 min
  • Keeping constructors simpleVideo · 3 min
  • TestabilityCuestionario · 0 min
  • Refactoring case study: Clean tests & testability - codeVideo · 3 min
  • Refactoring case study: Clean tests & testability - commentsVideo · 3 min
  • Refactoring case study: Clean tests & testability - testsVideo · 9 min
UNIDAD 13 - Bonus section · 1 lecciones

UNIDAD 13 - Bonus section

  • Bonus lecture (discount coupons!)Lectura · 0 min
Certificado oficial

Tu certificado lo emite la SEP, no solo una plataforma

Al demostrar la competencia recibes un certificado emitido por la Secretaría de Educación Pública a través del Gobierno del Estado de México: un documento oficial que puedes presentar con confianza ante cualquier empleador o institución.

Tu certificado con INEC

  • Lo emite la Secretaría de Educación Pública (SEP), a través del Gobierno del Estado de México
  • Documento oficial con folio verificable en línea
  • Lo otorga la Universidad Tecnológica Fidel Velázquez

Otras plataformas en línea

  • Constancia privada emitida por la misma plataforma
  • Solo acredita horas cursadas o asistencia
  • Sin respaldo de una autoridad educativa
Cómo funciona

Tu itinerario, de la inscripción al certificado

  1. 1

    Inscripción con pago único

    Pagas $2,800 MXN una sola vez y entras de inmediato al curso.

  2. 2

    Estudias a tu ritmo

    13 unidades con videos, lecturas y actividades, disponibles 24/7 durante 12 meses.

  3. 3

    Cuestionarios por unidad

    21 cuestionarios para comprobar lo aprendido.

  4. 4

    Certificado

    Emitido por la SEP a través del Gobierno del Estado de México, con folio verificable.

Lo que obtienes

Un certificado oficial de la SEP

Muestra del certificado: Ultimate Clean Code Masterclass for 2026

Muestra · verificable por folio y QR

  • Emitido por la Secretaría de Educación Pública (SEP), a través del Gobierno del Estado de México. No es una constancia privada: es un documento oficial, y ese respaldo marca la diferencia frente a otras plataformas en línea.
  • Contenido impartido por Elegant Code – Krystyna Ślusarczyk.
  • Folio y QR verificables para compartirlo con quien te contrate.
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Pago único

Empieza hoy, a tu ritmo

Un solo pago y acceso inmediato al curso completo durante 12 meses.

  • 13 unidades · 204 lecciones · 60 h
  • 12 meses de acceso
  • 21 cuestionarios de evaluación
  • Certificado emitido por la SEP (Gob. del Estado de México) con folio verificable
Pago único
$2,800MXN
Acceso por 12 meses
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¿Cómo es el pago?

Un solo pago de $2,800 MXN. No hay mensualidades ni cargos recurrentes.

¿Cuánto tiempo tengo acceso?

12 meses desde tu inscripción, 24/7, para avanzar a tu ritmo.

¿Quién imparte el contenido?

El curso es impartido por Elegant Code – Krystyna Ślusarczyk; INEC gestiona tu inscripción, evaluación y certificado.

¿Qué pasa cuando vence mi acceso?

Puedes renovar tu cuenta tú mismo desde la plataforma, sin trámites ni esperas.

Certificado emitido por la SEP a través del Gobierno del Estado de México · Ultimate Clean Code Masterclass for 2026

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