Back-End Developer: .NET

Build robust, secure web applications in the C# programming language with Microsoft's .NET software framework.

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A flexible online program

Imagine starting a brand-new career at any time! Can’t commit to full-time? No problem, study at your own pace.

Real-world projects

Acquire the most relevant skills by completing 10 projects based on those required in your future career.

Individual learning support

Benefit from weekly mentoring sessions with an expert in the field.

A Bachelor's-level diploma

Leave with a professional qualification and the guarantee of a job within 6 months.

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Back-End Developer: .NET

DiplomaBachelor's-level diplomaIndividual learning supportJob guarantee

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 a 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 .NET developer?

A .NET ("dot-net") developer is a back-end developer who is specialized in using Microsoft's software framework, .NET, to build web applications with the C# ("c-sharp") programming language. A .NET 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 .NET developer:

United States

Beginner: $45,000 - $75,000

2-5 years: $55,000 - $85,000

5+ years: $70,000 - $95,000 +

United Kingdom

Beginner: £20,000 - £40,000 

2-5 years: £30,000 - £50,000

5+ years: £40,000 - £60,000 +

What are my job prospects?

This path can prepare you for the following jobs:

  • .NET developer
  • C# developer
  • Back-end developer

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 to do?

  • Jump-start your studies by defining a personal learning strategy
  • Program with the C# programming language
  • Use programming tools like Visual Studio, Git, and ASP.NET Core
  • Visualize the design of a system with UML (Unified Modeling Language)
  • Develop user interfaces using the MVC pattern
  • Ensure the security of a web application
  • Perform a needs analysis and propose a technical solution
  • Develop an application according to customer needs
  • Manage application test plans
  • Provide technical support with documentation
  • Stay up to date for a set of technologies
  • Practice Agile web development
  • ...and more!

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.

Your diploma

  • OpenClassrooms is a private distance learning establishment, registered with the Board of Education in Paris, France.

  • Once you’ve completed your training path and validated your skills, you’ll be awarded the "Back-End Developer: .NET" diploma.
    You'll earn the "Back-End Developer: .NET" certificate, registered at the National Directory of Professional Certifications. This diploma is at Bachelor's-level on the EQF (European Qualifications Framework).

  • Contact the university or higher education establishment where you’d like to continue your studies if you have questions about the equivalence of the diploma.

Job guarantee

  • Find work within 6 months of graduating.

  • Get your money back from OpenClassrooms if you don't.
    See Job Guarantee.


Back-End Developer: .NET

DiplomaBachelor's-level diplomaIndividual learning supportJob guarantee

A teaching method based on practical experience.

  • Acquire key skills for your future career with real-world projects.

  • Make progress with the support of an experienced professional.

  • Acquire concrete know-how and demonstrate it with a portfolio.

Detailed projects and skills

project 1

Spend a day in the life of a back-end developer

What will your job look like? Get a peek at what it's actually like to work as a back-end developer! You'll analyze the job and define a learning strategy for working towards becoming an autonomous professional.
Duration45 hours
Skills acquired in this project
  • Integrate content according to a mockup
  • Describe the role of a back-end developer
  • Create a plan for completing your learning path
project 2

Come to the rescue of a .NET application

You're the last line of defense and you've been brought in to finish up what another developer has started. Ready to go on the hunt for some bugs and get the green light on those tests? Let's dive in!
Duration55 hours
Skills acquired in this project
  • Produce an xUnit test execution report
  • Fix an application according to a test execution report
project 3

Test the implementation of a new .NET functionality

If you want to implement a new functionality in your application, you've got to write your tests along with your code. Your job is to get it right, so you can release your app on a Friday and still have a nice weekend.
Duration60 hours
Skills acquired in this project
  • Implement integration tests for a new functionality in a C# application
  • Implement unit tests for a new functionality in a C# application
project 4

Understand your client's needs and design the application of their dreams

Making your customer happy includes listening to what they need in order to design a high quality business domain. It's up to you to come up with the application they've been waiting for!
Duration50 hours
Skills acquired in this project
  • Write detailed specifications
  • Analyze customer requirements
  • List functionalities required by the customer
  • Select a suitable technical solution
project 5

Create your first application with ASP.NET Core

A new customer has come to you requesting an application with specific functionalities. Demonstrate what .NET can do for them by building an MVC app while respecting good development practices.
Duration120 hours
Skills acquired in this project
  • Develop an application with the functionalities expected by the client
  • Respect good coding practices
  • Select suitable programming languages for an MVC web application
project 6

Design and create a production-ready .NET application

Your first application impressed your customer, they now want it live! Time to turn to a database and make it production-ready!
Duration130 hours
Skills acquired in this project
  • Implement a data schema in a database
  • Produce the design schema of an application database
  • Design the technical architecture of an application database using an ERD
project 7

Make your .NET back end more adaptable with a REST API

Modernize the back end of an application with a REST API. Make sure it's tested, secured, and ready for deployment!
Duration100 hours
Skills acquired in this project
  • Implement REST APIs using best practices
project 8

Scale your .NET app with distributed systems

A new client needs its monolithic application adapted to evolve more easily. Now it's up to you to make a more efficient, decoupled web application!
Duration100 hours
Skills acquired in this project
  • Complete a Unit and Integration test suite to account for changes
  • Improve an application as per a customer request
  • Fix faults reported by the customer on an application
  • Produce technical and functional documentation for the application
project 9

Survey the technology landscape

Create your own dashboard to stay up to date on all the latest and greatest tech happenings!
Duration10 hours
Skills acquired in this project
  • Identify tools and resources for staying up to date with technology
  • Set up a system for staying up to date with technology
project 10

Produce the right, agile, .NET solution for your customer!

Build an application for disease risk screenings. Structure your app using a microservice and a NoSQL database. Organize your time into sprints, following Agile project management principles.
Duration130 hours
Skills acquired in this project
  • Create a microservice for an application
  • Create a segmented REST API
  • Implement Agile methodology to manage your code project
  • Use NoSQL databases
Web developer (Développeur(euse) d’application)

One-to-one learning support

  • Benefit from weekly individual mentoring sessions with an expert in the field.

  • Progress rapidly through projects thanks to their expertise in sharing know-how.

The OpenClassrooms community

  • Count on our solid student community to give you support 24-7.

  • Share your doubts or queries with a comprehensive network of students, mentors, and graduates.

Pay for your path

Monthly subscription: The flexible, customizable option

For everyone

  • Adapts to your schedule: Study at your pace

  • Non-binding subscription: Stop at any time

  • The faster you finish, the less it costs

  • Start date of your choice

€300 per month

Approx. 12 months

Start now

Need help finding the most relevant funding option?

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We are here to help

Our team is available to answer your questions about our programs or your new career path.