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Senior C#.Net Developer

We are looking for a new Senior C#.Net Developer in Apeldoorn, to support our strong international growth and customer service. If you want to be part of a small and close-knit team within an innovative and dynamic organisation, this is the new challenge you are looking for.

Your role: you can make an impact

You will play an important role in our Developer Team in order to increase our footprint and continue our growth. You will help in our partnerships with customers by getting to know and developing our products and services in order to arrive at innovative new solutions every time. This is a unique opportunity to be part of a professional team with different disciplines that has a major impact on our software.

We are currently restructuring our team, which makes us open to different specialisms. Does this job description not exactly describe you, but would you like to work at O-Prognose anyway and do you have experience with .Net? Check out our job vacancies for front-end, back-end or mobile developer on

O-Prognose: insight into your maintenance costs in the short and long term

O-Prognose, part of Spacewell, is a software specialist market leader in professional solutions for sustainable management and maintenance of real estate, technical installations, and infrastructure.

With O-Prognose, our end users can set up a multi-year maintenance plan. With our software, they can provide insight into inspections and maintenance schedules, to organise daily maintenance as effectively as possible.

Our team consists of enthusiastic professionals. More than 5,000 users and 1,300 organisations now work with our software. Do you want to be part of our organisation? Please read on.

Spacewell: a strong and innovative global player

Spacewell is a global software and consulting firm focused on solutions for the entire value chain of managing buildings including real estate, workplace, and facility management.

Our core purpose is to make buildings work harder for their occupants through unlocking the power of building information. We are at the forefront of IoT and BIM embedded in Integrated Workplace Management (IWMS) software, enabling our clients to benefit from rich asset information and real-time data from building sensors. By leveraging the Internet of Things, our solutions make buildings smart, drive efficient service delivery and enable our clients to deliver a superior occupant experience.

Our groundbreaking innovation has been recognized in our rankings in our Gartner listing, Deloitte Technology Fast 50, and as a leader in Verdantix matrix for IWMS software.

Having recently joined the Nemetschek group, a leading, digital end-to-end software provider across the entire lifecycle of buildings. has made us even more powerful in our growth and internationalization and offers a platform to accelerate growth through integration across the full building life cycle from design and construction to workplace and facility management.

If you share our passion for technology & innovation, want to serve big name clients and are looking to join an international team of professionals serving customers across the globe, then take at a look at this career opportunity.

Job Requirements

To be successful in this role, you will have several years of relevant development experience in a web environment with a layered architecture. You also have knowledge of and experience with several of the following techniques HTML5/CSS3, Typescript, Angular, Bootstrap, ASP.NET 5, .net Core, MVC6 and/or Azure. Knowledge of Xamarin is a plus. We are looking for a colleague who proactively provides advice and proposals for improvement to make our user-friendly software even better suited to the wishes and needs of our end users.

You are fluent in Dutch, both spoken and written. Other languages are a plus. We are looking for a team player with good communication skills who likes to work in a high-tech environment. In this role you will mainly work from our office in Appeldoorn.


  • have experience with C# and Visual Studio
  • are familiar with Rest services, JSON and XML
  • are familiar with MS SQL and Entity Framework

If you have all or a combination of the above qualifications, apply now!

What we offer

  • An attractive salary package
  • A flexible working from home policy
  • An informal, but professional working environment where colleagues support each other and work towards a common goal
  • Sufficient opportunities for development and growth
  • A fast, innovative environment where you have the opportunity to stimulate growth and shape the future of innovative technology
  • Appreciation for initiative, ownership, and dedication
  • Team Spirit & Fun

How To Apply

If you are interested in working with our highly talented and motivated global team, then click the apply button. If you have any questions please contact

We look forward to hearing from you.

Looking for ways to further improve your office for the 6ft/1.5m world? Check out our solutions.