.NET Developer

OneSource Consulting

Antwerp

Description

JOB TITLE:DEVELOPER .NET (MEDIOR)

LOCATION: ANTWERP, BELGIUM

LANGUAGES: ENGLISH, DUTCH

WORK MODE: HYBRID (2-3 DAYS ONSITE PER WEEK)

DURATION:03/08/2026 - 31/12/2026

JOB DESCRIPTION - ROLES AND RESPONSIBILITIES

  • We are looking for a medior .NET developer who is responsible for the analysis, development, testing, documentation and support of applications and data links within a modern Microsoft technology stack. The developer is part of a development team and actively contributes to the realization of high-quality, maintainable and scalable software solutions.
  • The candidate has a good technical background in . NET development, can independently carry out development assignments and works smoothly with architects, infrastructure colleagues, analysts, application managers and other developers.
  • Demonstrable experience in development of .NET-based applications
  • Demonstrable training with certification or equivalent through experience in programming languages and environments such as .Net (C#), ASP.NET, ...
  • Be able to perform demonstrable experience in programming assignments very smoothly: coding, testing and debugging. If necessary, also completely independent (e.g. maintenance).
  • Demonstrable knowledge and experience of Agile development methodology
  • Language requirement: Dutch at European CEFR level C2.

SKILLS

  • Proven experience in developing .NET-based applications
  • Proven experience with Blazor (Server and/or WebAssembly)
  • Proven experience in developing RESTful APIs
  • Demonstrable experience in independently carrying out development assignments
  • Demonstrable experience with relational databases
  • Demonstrable training with certification or equivalent through experience in programming languages and environments such as .Net (C#), ASP.NET, ...
  • Be able to write, analyze, and optimize SQL queries
  • Language requirement: Dutch at European CEFR - level C2.
  • Demonstrated basic knowledge of authentication and authorization mechanisms such as OAuth2, OpenID Connect or JWT
  • Demonstrable basic knowledge of data modeling, indexes, views and stored procedures
  • Demonstrable Basic knowledge of software architecture and design patterns
  • Be able to perform demonstrable experience in programming assignments very smoothly: coding, testing and debugging. If necessary, also completely independent (e.g. maintenance).
  • Demonstrable experience in a hospital context
  • Proven experience with modern component-based UI development
  • Demonstrable knowledge and experience of Agile development methodology
  • Demonstrable knowledge of API design principles, HTTP methods, status codes and JSON exchange
  • Demonstrated knowledge of CI/CD principles
  • Proven knowledge of Microsoft SQL Server
  • Demonstrated knowledge of: HTML5, CSS3, JavaScript