Location: Brussels(the option to work from home up to three days a week)Languages: English and French or Dutch.Employment Type: FreelanceStart Date: ASAPEnd Date: 31/03/2026Context of the mission/objective(s) of the jobSeeking for one new .NET fullstack developer with strong experience in WPF to support our ongoing initiatives within our existing teams.The team is working on a complex application Netcalc calculating the electricity Grid impact using Powerfactory.The new developer must have backend as well as frontend experience (with focus on the backend 80% Be / 20% FE) as Seas is performing complex calculations.Resource must be comfortable working in a complex/mathematical environment.RequirementsThe developer will be expected to follow Client's standards and ensure high-quality code delivery.They should have a strong knowledge of the following technologies:.NET 8 C#WPF is a MUST.SQL ServerMongoDBRabbitMQMicro-services architectureThe developer will be expected to follow Elia's standards and ensure high-quality code delivery. MUST (good level):C#.NETSQL Server / TSQLSplunkOpenAPI/SwaggerBlazorShould:Clean code, DRY, YAGNI, sonarqube (Quality Gate)?, CoverageMicroService designTracingMonitoringLoggingAzureAngular 17+, React 18+, TypeScriptSoft Skills: The candidate should possess good communication skills, take accountability for their tasks.Additional informationLocation: Brussels, with the option to work from home up to three days a week. In case of travels to Germany, Client will cover all costs