BairesDev is seeking a Senior Platform Security Engineer (IAM/Authorization) to architect and deploy scalable identity and access management solutions across the platform. You’ll build fine-grained authorization models, develop authentication middleware, and collaborate with engineering to enforce secure-by-default API patterns. The role demands 5+ years in platform security or IAM, experience with ReBAC/RBAC, Zanzibar-inspired systems like SpiceDB or Auth0 FGA, and strong distributed-systems