**Job Details:** Janela Digital, Informática e Telecomunicações S.A., headquartered in Óbidos, is recruiting! Senior C\# Web \- Mid Senior level **Job Description:** We are looking for a Senior C\# Programmer with experience and motivation to join our team. You will be responsible for planning, developing, and maintaining robust and scalable applications, as well as contributing to strategic software development decisions. **Responsibilities:** * Plan, develop, and optimize applications using C\# and the .NET ecosystem (ASP.NET Core/Framework) * Perform technical requirement analysis and propose efficient solutions. * Ensure code quality through reviews and best development practices. * Solve complex problems and ensure maintenance and evolution of existing systems. **Requirements:** * Proven experience in software development with C\#. * Solid knowledge of .NET (ASP.NET Core/Framework). * Strong knowledge of HTML, CSS, JavaScript, and frameworks such as React or Angular. * Experience with Databases (SQL Server / MySQL / PostgreSQL). * Ability to design scalable and high-performance solutions. * Knowledge of API and web services integration (REST, SOAP). * Experience with microservices architecture. * Proficiency with version control tools such as Git. * Knowledge of agile methodologies * Good organizational skills, autonomy, and proactivity * Residence in Leiria District (on-site work mode) If you meet the requirements, please send your resume to **\** indicating the position you are applying for. You can find the original advertisement published at: https://www.itjobs.pt/oferta/503647/programador\-senior\-em\-c\-web