OpenTelemetry, Langfuse). Multi-tenant SaaS where tenant isolation is a design constraint. Infrastructure as code (Terraform, Kubernetes). Search and retrieval at scale (Elasticsearch, vector search, knowledge graphs). Functional programming, either in TypeScript (fp-ts) or in a functional language. Not Required for This RoleMachine learning research. … parts you have not used. Languages: TypeScript, Node.js, PythonBackend: Apollo GraphQL, Zod, fp-ts, FastAPIFrontend: ReactWorkflow & messaging: Restate, Redis Streams, Cloud TasksData: PostgreSQL, Elasticsearch, Redis, MongoDBGenAI: LangGraph, OpenAIObservability: OpenTelemetry, Langfuse, DatadogCloud & infrastructure: Google Cloud, Azure, Kubernetes, Terraform, ArgoCD, DockerTooling: Git, GitHub ActionsBenefits Competitive compensation package Private medical & dental insurance ...