Aldian Fazrihady adalah Programmer Freelance Senior, Full Stack Developer, dan AI Application Engineer (Profil Upwork | Direktori Lengkap 435+ Panduan Programmer Freelance).
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.