Back-end Developer: Java

Learn software development using Java, one of the most widely-used programming languages in the world.
Back-end Developer: Java
En alternance
24 mois
À votre rythme
~ 12 mois
Emploi garanti
sous 6 mois
Diplôme niveau 6 (Bac+3/4)

One million computer programming jobs are estimated to be created in the U.S. by 2020 - as well as 700,000 in Europe - thanks to unprecedented growth in the tech sector.

Here at OpenClassrooms, we pinpoint the key skills needed for the most in-demand jobs and develop courses and diplomas to train our students in those areas. That’s why we've developed this one-year bachelor-level diploma in web development, which you can complete entirely online with the help of a dedicated mentor. 

What will I do as a Java developer?

A Java developer is a back-end developer who specializes in using the Java programming language to build applications. As Java is an essential part of many types of applications, Java developers are highly sought after in a wide variety of sectors. 

A java developer may be in charge of: 

  • developing and improving an application software 
  • designing technical architecture 
  • implementing software tests and debugging code
  • producing the design schema of a database
  • writing technical and functional documentation 
  • analyzing customer needs
  • selecting and advocating for suitable technical solutions
  • keeping up with changes in technologies

How much will I earn?

Back-end web development can be a lucrative career with many prospects opening up as you continue to rack up valuable experience. Here is what you might expect to earn in your career as a Java developer:

United States

Beginner: $50,000 - $80,000

2-5 years: $70,000 - $90,000

5+ years: $100,000 +

United Kingdom

Beginner: £30,000 - £40,000 

2-5 years: £40,000 - £50,000

5+ years: £50,000 + 

What are my job prospects?

This path can prepare you for the following jobs:

  • Java developer
  • Back-end developer

Java is also one of the languages used to program mobile Android applications.

After a few years of experience, a developer can advance to a position of lead developer, software designer / architect, or technical director / tech lead.

Who is eligible to enroll?

This path is accessible to all, but here are some recommendations:

  • A high school diploma / GCSE level
  • A good level of English (for non-native speakers, a CEFR level of B2, an IELTS band score of 6.5, or a TOEFL score of 80 is recommended) 
  • Access to a computer (PC or Mac), headphones, a webcam
  • Internet access

What will I learn how to do?

In this path, you'll learn how to:

  • Jump-start your studies by defining a personal learning strategy.
  • Program with the Java programming language.
  • Use programming tools like an IDE, Git & GitHub and frameworks like Spring Boot.
  • Ensure the basic security of a web application.
  • Interpret user requirements and propose a technical solution.
  • Use domain driven design to create UML diagrams.
  • Design database schemas and connect to a database. 
  • Test your applications using test driven development.
  • Practice agile web development. 

How will I learn at OpenClassrooms?

Our learning method is unique and revolves around two elements: professional projects and dedicated mentoring sessions.

At OpenClassrooms, learning is project-driven because that’s the fastest way to become proficient. Projects offer hands-on experience so you can hit the ground running when you start your new job.  

Want to see an example of a project? Read our blog post here.

During your path, you will be assigned a mentor who will offer one-to-one support via weekly video conference sessions. This mentor will offer guidance on your projects, help define objectives and guide you until you reach them. Our mentors are dedicated professionals who are experts in their field and have experience in sharing their know-how with our students.

Votre diplôme

OpenClassrooms est un établissement privé d'enseignement à distance déclaré au rectorat de l'Académie de Paris, délivrant ses propres diplômes ainsi que ceux d'autres partenaires académiques prestigieux.

À l'issue de votre formation et de la validation de vos compétences par le jury du diplôme, vous pourrez obtenir le diplôme "Web developer (Développeur(euse) d’application)" enregistré au Répertoire National des Certifications Professionnelles*.

Ce diplôme est de niveau 6 (Bac+3/4) sur les cadres français et européen des certifications (European Qualifications Framework).

Si vous avez des questions à propos de son équivalence pour poursuivre vos études, contactez votre université ou école dans laquelle vous voulez continuer après le diplôme.

Si vous avez déjà au moins 1 an d'expérience professionnelle dans ce métier, vous pouvez obtenir plus rapidement ce diplôme grâce à une Validation des Acquis de l'Expérience (VAE).

* Fiche accessible à l'adresse suivante :

Votre emploi garanti

L'engagement d'OpenClassrooms, c'est un emploi fait pour vous. Garanti.

Avec le parcours "Back-end Developer: Java", formez-vous à un nouveau métier passionnant avec des perspectives d'évolution intéressantes.

Vous trouvez un emploi sous 6 mois suivant votre diplôme ou nous vous remboursons votre parcours !

En savoir plus

Les projets et compétences en détail

projet 1

Set Yourself Up For Success as a Java Back-end Developer

Create a learning plan to acquire the skills you need as a Java Developer. Choose tools to stay up-to-date with innovations in your field and develop your first website with HTML and CSS!
Durée40 heures
Compétences acquises dans ce projet
  • Design a personalized learning plan
  • Integrate content according to a mockup
  • Select relevant information sources for a set of technologies
  • Set up a system for staying up to date with technology
projet 2

Debug a Java application

You've been hired to finish an application another developer has started, and it's up to you to make sure that it gets up and running correctly! Get ready to make your mark and fix your first Java application!
Durée60 heures
Compétences acquises dans ce projet
  • Build a collaborative code project
  • Program using Java fundamentals
projet 3

Design an Application to Fit Your Client's Needs

Analyze your client's needs, develop a domain model using a domain-driven design approach, create user stories, and design wireframes to get your client on board.
Durée50 heures
Compétences acquises dans ce projet
  • Analyze a client's requirements
  • List functionalities requested by the client
  • Select a suitable technical solution
  • Write detailed specifications
projet 4

Fix and Update a Java Application Using Best Testing Practices

You’re taking over work on an unfinished application and a number of tests are failing. Your mission is to fix the application and add a missing functionality so that your client leaves happy!
Durée70 heures
Compétences acquises dans ce projet
  • Fix an application according to a test execution report
  • Implement integration tests
  • Implement unit tests
  • Produce a test execution report
projet 5

Create Your First Java Web Application From Scratch!

Implement an application to help first responders receive alerts using Spring Boot, a popular Java framework. You'll use quality code practices such as organizing your code with MVC, applying the SOLID principles, and respecting the Testing Pyramid!
Durée120 heures
Compétences acquises dans ce projet
  • Develop a Spring Boot application
  • Respect industry standard coding practices
  • Justify the application design & programming languages selected
projet 6

Work with Databases to Create a Secure Web Application

You're working on a money transfer app, which means you need to access and store data securely in a database. You'll design and implement your database schema in a relational database.
Durée130 heures
Compétences acquises dans ce projet
  • Implement a data schema in a database
  • Design the technical architecture of an application
  • Produce a database design schema
projet 7

Make Your Java back-end More Adaptable With a REST API

Modernize the backend of a financial application with a REST API. Make sure it's tested and ready for deployment!
Durée100 heures
Compétences acquises dans ce projet
  • Implement REST APIs using best practices
projet 8

Scale Up Your App With Distributed Systems

A travel agency has asked you to adapt its monolithic application so that it can evolve more easily. Now it's up to you to make a more efficient, decoupled web application!
Durée100 heures
Compétences acquises dans ce projet
  • Complete a Unit and Integration test suite to account for changes
  • Improve an application as per a customer request
  • Produce technical and functional documentation for the application
  • Fix faults reported by the customer on an application
projet 9

Develop a Complete Application For Your Client Using Agile Techniques

Build a medical app for disease risk screenings. Structure your app using a microservice and a NoSQL database. Organize your time into sprints, following Agile project management principles.
Durée130 heures
Compétences acquises dans ce projet
  • Create a microservice for an application
  • Implement Agile methodology to manage your code project
  • Create a segmented REST API
  • Use NoSQL databases
Web developer (Développeur(euse) d’application)

Débutez la carrière de vos rêves

À votre rythme

300 $US par mois

Vos avantages :
  • Un emploi garanti sous 6 mois

  • Un diplôme niveau 6 (Bac+3/4)

  • Une durée de formation flexible

  • Une session individuelle de mentorat hebdomadaire

  • 9 projets professionnalisants

DémarrerSans engagement

En alternance


Vos avantages :
Tous les avantages du parcours +
  • Gagnez votre vie tout en suivant votre formation

  • Renforcez votre expérience en entreprise

  • Enrichissez votre CV

Valable pour les personnes autorisées à travailler en France* Formation financée par votre employeur ou l'État
Nous sommes là pour vous aider.