Stabilizing a Data Pipeline Migration Under Changing Conditions
How validation throughput, scoped reruns, failure handling, metadata semantics, and observability shaped a production pipeline migration.
Read →Projects & Case Studies
Selected field notes from production data systems: migration risk, validation boundaries, runtime behavior, and operational reliability.
Selected Work
Case notes and project directions.
Runtime Support Artifact Governance
A support file looked like reference data, but it controlled execution. I traced repeated processing to drift between reviewed source artifacts and runtime artifacts, then reframed the file as workload-control infrastructure requiring validation and release-boundary ownership.
Read →Memory-Bound Python Aggregation
A grouped Python aggregation worked for normal slices but failed on a large skewed workload. The investigation clarified when Python UDFs are practical, when group cardinality becomes the memory boundary, and why a feature-flagged Spark-native fallback can be safer than a universal rewrite.
Read →Multi-Tenant dbt Architecture
A multi-tenant transformation system needs a careful boundary between shared models and tenant-specific overrides. The architecture focused on preserving a common transformation layer while allowing controlled customization where business logic diverged.
Read →Applied Side Projects
Small systems used to test ideas in workflow design and diagnostics.
AgenticSqlConverter
A local-first SQL migration review harness for making legacy query structure inspectable before rewrite automation.
It parses SQL, extracts CTE structure, builds dependency graphs, runs parse-readiness checks, and surfaces deterministic migration-risk signals for review.
Browse AgenticSqlConverter →BirdingBuddy / Field Notes
Production web application for destination-aware birding planning.
BirdingBuddy connects recent observations, habitat context, seasonal signals, and recommendation logic to help birders plan where and when to look.
Visit BirdingBuddy →