About CRK Dev LLC
B2B data products and custom pipeline engineering for healthcare, dental, and professional verticals.
Who I Am
I'm Craig — a site superintendent with 23 years in underground utilities and infrastructure who taught himself to code and built a data engineering business from scratch.
CRK Dev LLC is a one-person shop. I build targeted B2B datasets and the pipelines that produce them. No resold data, no aggregators, no shortcuts. Everything in the catalog is something I built myself.
I started learning Python seriously a couple years ago and built Spectral — a production data pipeline — as my first real system. It scrapes, enriches, deduplicates, and packages B2B datasets at scale. The catalog is the output of that work.
If you want data built by someone who actually engineers it, not a broker who resells it — that's what CRK Dev is.
The Spectral Pipeline
The infrastructure behind every dataset
Spectral is the internal pipeline I built to produce every dataset in the catalog. It runs five stages: extraction, normalization, enrichment, deduplication, and output. Every product in the catalog runs through this pipeline.
Spectral is also the foundation for custom pipeline work. If a client needs data from a specific source processed the same way, I extend the pipeline — I don't rebuild it.
How I Work
Primary Sources Only
Every dataset starts from state licensing boards, professional registries, and verified business records — not re-sold data from aggregators. If it's in the catalog, I built it from scratch.
Speed Without Shortcuts
Fast turnaround because the Spectral pipeline is built for it — not because corners are cut. Normalization, deduplication, and verification are baked in, not optional.
Legitimate Use
All data is sourced from public records and intended for B2B outreach, software development, and market research. This isn't scraped spam data — it's purpose-built for vendors and professionals.
Reproducible Pipelines
Every dataset is built from a versioned, documented pipeline. When it's time to refresh, I re-run the same process against updated sources — not patch the old file.
Get in touch
For custom data work, dataset questions, or anything else — craig@crkdev.com or use the contact form.