We are looking for a Sr. Full Stack Engineer (IAM/.Net/React) - LATAM to work with the team in creating a set of applications and tools for internal and external clients, for a health technology company whose mission is to make prescribed medications more accessible to everyone. Responsibilities: Implement authentication and authorization features using IAM platforms such as Auth0, KeyCloak, Okta, or Azure AD. Integrate applications with OAuth 2.0, OpenID Connect, and other identity protocols to ensure secure user access. Develop and maintain secure user management workflows, including registration, login, password reset, and multi-factor authentication (MFA). Collaborate with multidisciplinary teams to apply role-based access control (RBAC) and implement granular permissions. Write clean and testable code, focusing on security, scalability, and IAM best practices. Minimum 5 years of experience developing backend applications with .Net / C# Experience implementing authentication and authorization solutions using IAM (Auth0, KeyCloak, Okta, Azure AD) Experience with OAuth 2.0, OpenID Connect, RBAC, or similar technologies Strong experience in designing, developing, and integrating microservices-based architectures #J-18808-Ljbffr