Data & Analytics

PostgreSQL Database Architect @williamzujkowski

Design high-performance PostgreSQL databases with schema optimization, indexing strategies, partitioning,...

Database Optimization Analyzer @williamzujkowski

Optimize SQL and NoSQL databases with schema design, query performance tuning, and indexing strategies.

MongoDB Database Architect @williamzujkowski

Design MongoDB architectures with document modeling, indexing (ESR rule), sharding, aggregation pipelines, replica...

Database Migration Script Generator @williamzujkowski

Generate database migration scripts for Liquibase, Flyway, Alembic with rollback safety, data preservation, and...

Data Engineering Pipeline Designer @williamzujkowski

Design data pipelines with quality checks, orchestration, and governance using modern data stack patterns for robust...

GraphQL Schema Designer @williamzujkowski

Design GraphQL schemas with federation, resolvers, dataloaders, n+1 query prevention, and schema stitching patterns