Engineering teams suffering from broken relational integrity in MongoDB, complex single-table access limits in DynamoDB, or expensive SQL Server licensing frequently search to hire a freelance database migration programmer to consolidate onto PostgreSQL. I am Aldian Fazrihady, a Senior Freelance Database & Full Stack Programmer available via Upwork.

Core Zero-Downtime Database Migration Capabilities

  • MongoDB / Document DB to PostgreSQL (Relational + JSONB): Normalizing core business entities into ACID relational tables with foreign-key constraints while retaining flexible `JSONB` + GIN indexes for polymorphic attributes.
  • MySQL / MariaDB / SQL Server to PostgreSQL (`pgloader` & CDC): Automating schema conversion, custom data-type casting, dual-write / Debezium CDC synchronization, and row-count/checksum parity verification.
  • Unifying Transactional, Vector (`pgvector`), Geospatial (`PostGIS`) & Time-Series (`TimescaleDB`) Workloads: Replacing 4 separate database bills with a single, rock-solid PostgreSQL architecture.

Frequently Asked Questions

How do you migrate a live production database without hours of maintenance downtime?

I perform an initial historical snapshot backfill, stream ongoing changes via Change Data Capture (CDC) or application dual-writes, verify 100% row checksum parity on shadow reads, and flip the primary connection string in seconds.

How do I hire you for a PostgreSQL migration?

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.

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