As part of the development and evolution of strategic internal applications, our client is looking for a Senior .NET Developer / Business Analyst capable of combining strong technical expertise with a good understanding of business needs. This key role is within a demanding environment where applications are developed in-house and widely used by internal teams. - The successful candidate will be involved in both the design and development phases while interacting directly with end users. Responsibilities - Participate in the analysis of business needs and support teams in defining appropriate application solutions - Develop and enhance internal applications based on .NET technologies - Interact directly with internal users to understand their needs and propose suitable solutions - Translate business challenges into functional and technical specifications - Contribute to application architecture and technical decision-making - Ensure code quality, maintainability, and performance of the developed solutions - Participate in the support and continuous improvement of existing tools - Collaborate closely with technical teams and various stakeholders across the organization Profile / Requirements : - Significant experience in .NET development within professional environments - Ability to operate in a hybrid Developer / Business Analyst role - Strong analytical mindset and ability to understand business processes - Experience working with internal stakeholders and translating business needs into technical solutions - Excellent communication and interpersonal skills - Ability to interact with a wide range of stakeholders (HR teams, business users, IT, management) - Comfortable working in complex organizational environments - English level C1 required; an additional language is a plus Technical Skills : - Strong expertise in .NET / C# - Good command of SQL databases - Experience with Python, particularly for data analysis, automation, or scripting - Experience developing internal or business-critical applications - Knowledge of React is a plus - Good understanding of modern application architectures