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Apside Belgium - .NET Fullstack Developer

Function Description


We are actively looking for a Senior (at least 5y of experience) .NET C# developer with also some experience with Web frameworks, to join one of our customer's Project Support and Maintenance teams. The objective of these teams is to supply services for a series of critical core-applications.


As a .NET C# Developer, you are mainly supposed to participate in the following activities

  • Project Services: Adapting the software product to fit requirements from corporate-wide projects.
  • Product Support: Ensuring the continuity of the operations of the software product and providing support to the users of these applications.
  • Product Maintenance: Ensuring the correct functioning of the software product: resolution of production problems and adaptation of the software product to a changed environment.
  • Product Enhancement: Providing a software product that is fully adapted to the business needs by implementing new functionality requested by the business users. 

You will be involved in all aspects of the services, including bug finding and resolution, incident management, new developments.

Based on detailed analysis and mock-ups the candidate will produce quality code, with unittesting, code coverage and documentation. The candidate will also participate in the design of the solution. Ideally the candidate will have relevant experience in corporate-wide projects.




  • Cooperate with other team members to provide business value.
  • Implement new functionalities and maintain existing software.
  • Testing (unit tests, integration tests).
  • Collaborate with operations teams to deploy/configure the software.
  • Realize support and maintenance service by helping in bug finding and resolution, incident management.
  • Propose Architectural improvements of existing products.
  • Together with the Technical Architect participate in design phase of new products.


Communication Skills

  • Ability to communicate in French (spoken) and English (spoken and written), Dutch (spoken) is an asset
  • Ability to communicate with business analysts for understanding the specifications and designs that form the basis for implementation
  • Ability to communicate with technical lead to understand the constraints of the architecture that must be followed.


Personal Skills

  • Ability to work relatively independently following the priorities and timing of the release plan
  • Ability to work structured following the procedures (check-in, check-out, time sheet reporting, punctuality)
  • Ability to work according to rules, standards and guidelines defined in the architecture
  • Ability to learn a complex business model


Technical Skills

  • Develop well-crafted software by following industry best practices like continuous integration and unit testing.
  • Ability to develop clean code with the .NET platform according to the coding conventions and rules.
  • Ability to do bottom-up research for problem diagnostics.
  • Experience in maintaining complex software systems with a large codebase.
  • Experience in working effectively with legacy code.
  • Affinity with the technical stack used by the team:
    • ASP.NET MVC & WebAPI
    • Angular 9
    • WCF
    • .NET Core & .NET Framework 4.8
    • RabbitMQ or other Messaging platforms
    • Visual Studio 2019
    • Visual Studio Code
    • NHibernate
    • SQLServer
    • Oracle & Toad
    • DDD
    • TDD
    • Design patterns

Company description

Since 40 years, we're pleased to offer ICT services, with a great focus on human relations and partnership. Because treating our employees and our customers the same way is certainly the best way to show them how important they both are for us.
Partnership and mutual evolution are the most important pillars of stability and balance. Banking & insurance, retail industry, energy, transportation, import-export, Telecom industry; we operate in various sectors, and our own experience is a nice mix between global and local activities. We work hard and well, for international companies, and for small and medium sized companies as well. Our development is still the support in the original values of our group: transparency, expertise, proximity and continuity.

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