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.
Birding Buddy / Field Notes
The hard part of birding plans is not choosing a place. It is matching records, habitat, season, and timing.
Designed a lightweight planning concept that connects bird records, habitat context, seasonal signals, and recommendation logic.
- Connects field observation with structured data.
- Explores small-scale recommendation logic.