Application Architect ( .NET & React

Reference number::907 | Created on:

April 1, 2026

525 day rate Freelance or B2B

Lux Service is seeking an Application Architect (SharePoint, .NET) fluent in English, to offer his/her services as an expert who will be based in Belgium. The work will be carried out either in the company’s premises or on-site at customer premises. In the context of the first assignment, the successful candidate will be integrated with the Development team of the company that will closely cooperate with a major client’s IT team on site.

• Development of front-end website architecture and back-end website applications;
• Understanding and implementation of security and data protection;
• Design and develop APIs;
• Compile and analyse data, processes, and codes to troubleshoot problems and identify areas for improvement;
• Production of software architecture documents as well as coordination of the implementation of the technical architecture;
• Assistance during relevant parts of testing, analysis, technical documentation, deployment, evaluation and reporting.

• Master’s degree in IT combined with relevant IT professional experience of 13 years;
• At least 5 years of development for .NET platform, both server-side and client side;
• At least 5 years of experience with React and excellent knowledge of REST API development;
• At least 3 years of experience in architecture best practices and patterns, applications design and business process analysis;
• At least 3 years of specific expertise in interoperability technology (web services, message oriented middleware, service oriented bus, event architecture);
• At least 3 years of specific expertise in database technology such as Oracle, MongoDB, Microsoft SQL Server;
• At least 1 year of experience in Jira, Confluence and code versioning tools such as Git or SVN;
• Experience with SharePoint Online, both client side (SPFx framework, React) and server-side (MS Graph, etc);
• Experience with one of the tools to create workflows like:
  Workflow manager, Nintex workflow;
• Excellent command of the English language.