Back-End .NET Developer

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

Training period

12 months full time

Training duration

800 hours supervised

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.

OpenClassrooms Certification

Leave with a professional qualification and benefit from our hired or refunded guarantee.*

DevelopmentBack-End .NET Developer

OpenClassrooms Certification

Training period

12 months full time

Training duration

800 hours supervised

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?

To be eligible to earn this path's diploma, candidates must demonstrate proof of one of the following prerequisites:

  • an associate's degree, or equivalent, in computer science, web development, or software development
  • or a high school/secondary school degree, vocational certificate, or equivalent, and at least 2 years of professional experience in IT, web development, or software development

All other candidates will need to go through a specific admissions process. These candidates must have:

  • Language: You will need to provide a certificate not older than 2 years to demonstrate a minimum level of English B2.

    Certificates accepted:

    • English Diploma from a secondary institution (private or public) or an accredited higher learning institution
    • Linguaskill minimum score: 160
    • BULATS minimum score: 60
    • TOEIC minimum score: 785
    • IELTS minimum score: 6.5
    • TOEFL iBT minimum score: 88
    • Cambridge FCE / CAE / BEC HIGHER / BEC VANTAGE minimum score or grade: B or 160
    • Certificate from a language center demonstrating a minimum level of B2 (including the number of training hours completed and the company signature or stamp)

    Don’t have one of these certificates? Find out where to take an exam.

  • Equipment: Candidates must also have access to a computer (PC or Mac), headphones, a microphone, a webcam, and a good internet connection for mentoring sessions (3.2 Mbps upload and 1.8 Mbps for download). In addition, to master the skills on this path, you will need to:
    • Have at least 8 GB of RAM (16 GB is more comfortable) and 100 GB of storage space available on your computer.
    • Have administrator rights to your computer in order to install required programs.

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.

At the end of this training, you will be delivered the .NET Back-end React Developer OpenClassrooms certification.

Your diploma

  • OpenClassrooms is an online training educational establishment, declared as such by the French authority ‘le rectorat de l'Académie de Paris’.

  • Once you’ve completed your training program, and subject to validating your skills, you will receive the OpenClassrooms standard diploma "Back-End .NET Developer".

Hired or refunded guarantee

  • You find a job in the 6 months following the date of validation of your last path project.

  • Otherwise, we guarantee the reimbursement of your tuition.*
    See more details

DevelopmentBack-End .NET Developer

OpenClassrooms Certification

Training period

12 months full time

Training duration

800 hours supervised

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.

45 hours supervised

Skills acquired in this project
  • Describe the role of a back-end developer
  • Create a plan for completing your learning path
  • Integrate content according to a mock-up
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!

55 hours supervised

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.

60 hours supervised

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!

50 hours supervised

Skills acquired in this project
  • Select a suitable technical solution
  • Write detailed specifications
  • Analyze customer requirements
  • List functionalities required by the customer
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.

120 hours supervised

Skills acquired in this project
  • Select suitable programming languages for an MVC web application
  • Respect good coding practices
  • Develop an application with the functionalities expected by the client
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!

130 hours supervised

Skills acquired in this project
  • Design the technical architecture of an application database using an ERD
  • Implement a data schema in a database
  • Produce the design schema of an application database
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!

100 hours supervised

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!

100 hours supervised

Skills acquired in this project
  • Complete a Unit and Integration test suite to account for changes
  • Fix faults reported by the customer on an application
  • Improve an application as per a customer request
  • 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!

10 hours supervised

Skills acquired in this project
  • Set up a system for staying up to date with technology
  • Identify tools and resources 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.

130 hours supervised

Skills acquired in this project
  • Create a segmented REST API
  • Create a microservice for an application
  • Implement Agile methodology to manage your code project
  • Use NoSQL databases

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.

How exactly will I learn on an OpenClassrooms path?

From choosing what to study to starting their new career, our students describe their experiences and the support they received at every step of the way.

See step-by-step experience

Pay for your path

Monthly subscription: The flexible, customizable option

For everyone.

  • Flexible start date and study schedule

  • Non-binding subscription: Stop at any time

  • The faster you finish, the less it costs

  • Hired or refunded guarantee*

€480 per month

for an estimated duration of 12 months amounting to €5,760.

Enroll now

This training program requires an estimated time commitment of 1600 hours, including 800 hours supervised.

The total training duration consists of:

  • 800 hours supervised with projects, coached by mentors
  • 800 hours guided with courses and educational resources

The training period can be extended in the case of part time training.
The average duration is estimated and depends on your entry level into training, the time allocated per week, your availability, your capacity, and learning pace.

Interested in this path for your company?

Get a quote or a demo

*Subject to the conditions set out in the Terms of Service

Training program last updated on Dec 26, 2023