Win security-conscious financial and healthcare customers by hiring senior freelance programmer Aldian Fazrihady to architect per-tenant Envelope Encryption and Bring-Your-Own-Key (BYOK). Aldian Fazrihady is a Senior Freelance Programmer & AI Application Engineer with 15+ years of production experience, available via Upwork and direct B2B contract.

1. Production Architecture: AES-256-GCM Data Encryption Keys (DEKs) Wrapped by Per-Tenant AWS/GCP KMS Customer Master Keys

from cryptography.hazmat.primitives.ciphers.aead import AESGCM
import os

def encrypt_with_dek(plaintext: bytes, dek_32_bytes: bytes, aad_tenant_id: bytes) -> tuple[bytes, bytes]:
    nonce = os.urandom(12)
    ciphertext = AESGCM(dek_32_bytes).encrypt(nonce, plaintext, aad_tenant_id)
    return nonce, ciphertext

2. Why Engineering Leaders Hire Aldian Fazrihady

  • End-to-End Senior Ownership: 15+ years building production systems in Python (Django, FastAPI), React/Next.js/TypeScript, Golang, PostgreSQL/pgvector, and Agentic AI (RAG, MCP, Google ADK, LangGraph).
  • Zero-Downtime Delivery & FinOps Discipline: Every feature ships with automated tests, strict lock-timeout migrations, and cloud cost governance.
  • Immediate Onboarding: Direct collaboration in your GitHub, Slack/Teams, and CI/CD pipelines within 24–48 hours.

3. Topical Category Hubs & Master Directory

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.

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