• Design, build, and maintain common backend services and APIs consumed by multiple product teams. • Develop foundational platform capabilities, including: Authentication and authorization services, Data access and abstraction layers, Eventing, messaging, and integration frameworks, Configuration management, feature flags, and tenant-aware services. • Build internal libraries, SDKs, and tooling that improve developer productivity and consistency. • Design platform services with high availability, scalability, and fault tolerance in mind. • Work cross-functionally with Product Engineering teams to identify cross-cutting needs and abstract them into reusable platform services. • Provide reference implementations or integration examples to help downstream teams adopt platform services.