Collaborative SaaS platforms with nested folders, shared workspaces, external guest links, and complex organizational hierarchies frequently outgrow simple role enums and search to hire a freelance Google Zanzibar ReBAC / ABAC authorization (OpenFGA, SpiceDB, Permify, Cerbos, Casbin) programmer. I am Aldian Fazrihady, a Senior Freelance Backend & Security Programmer.

Core Relationship-Based (ReBAC) & Policy-Based Authorization Capabilities

  • Google Zanzibar Tuple Modeling (OpenFGA / SpiceDB): Designing inheritance graphs (`user -> member of group -> editor of parent_folder -> viewer of document`) with sub-5ms `Check` and `ListObjects` lookups.
  • RAG & Vector Search Permission Pre-Filtering: Ensuring AI retrieval queries ONLY surface documents that the requesting user is authorized to view according to live Zanzibar/RLS permissions.
  • Stateless Policy Engines (Cerbos / OPA Rego / Casbin): Decoupling complex authorization logic from application controllers across Go, Python, and TypeScript microservices.

Frequently Asked Questions

How do you paginate a PostgreSQL table when permissions live in OpenFGA or SpiceDB?

I combine `ListObjects` / materialized permission lookup tables with PostgreSQL `JOIN`s or push down tenant/workspace predicates so cursor pagination remains fast and accurate.

How do I hire you for OpenFGA, SpiceDB, or enterprise RBAC architecture?

Hire me via Upwork.

About the Author — Hire Freelance Programmer Aldian Fazrihady

Aldian Fazrihady is a Top-Rated Senior Freelance Programmer, Freelance Full Stack Developer, and AI Application Engineer with 15+ years of production software engineering experience and Google Cloud Professional Cloud Architect & Data Engineer certifications. He specializes in building custom LLM & autonomous AI agents, RAG pipelines, Next.js/React PWAs, Python (Django/FastAPI), Go microservices, and serverless cloud infrastructure on Google Cloud Run and AWS.

Hire Aldian Fazrihady on Upwork | View Live AI Portfolio | Portfolio Directory | Send a Direct Message

Freelance Programmer Specializations & Category Hubs