We are looking for a Senior Full Stack Engineer (IAM/.Net/React) who is ready to take on a key role in the development and maintenance of applications and tools used by internal users and external customers. If you're passionate about designing robust architectures, implementing intuitive interfaces, and ensuring seamless integrations, this opportunity is for you! 🚀 ✅ Responsibilities Design, develop, and maintain scalable and secure full stack applications. Implement authentication and authorization flows using IAM platforms such as Auth0, Keycloak, Okta, or Azure AD. Integrate systems with identity protocols like OAuth 2.0, OpenID Connect, and others. Build and maintain secure user flows: registration, login, password recovery, and multi-factor authentication (MFA). Apply role-based access control (RBAC) and fine-grained permissions, working closely with cross-functional teams. Write clean, testable, and maintainable code, following best practices in software development and digital identity. Contribute in microservices and CI/CD-based environments, prioritizing operational efficiency and technical quality. Requisitos 5+ years of experience in full stack development with .NET (C#) for backend and React (JavaScript/TypeScript) for frontend. Proven experience with authentication/authorization solutions using IAM (Auth0, Keycloak, Okta, Azure AD). Strong command of OAuth 2.0, OpenID Connect, and related protocols. Advanced knowledge of JavaScript and TypeScript. Experience building and consuming RESTful APIs using .NET/C#. Familiarity with microservice architecture and CI/CD pipelines. 📎 Important As part of the hiring process, candidates are required to submit a 1–2 minute audio in English, introducing themselves and briefly describing their most recent technical experience.