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Independent data engineeringChristian Callahan / CGC Labs

Good data.
Built right.

Your data engineer, from source to handoff. I build pipelines, migrate legacy data, and make it ready to use.

Email your project Explore the work

For organizations of every size.
Reply within one business day.

A clear path through your dataCGC / 01
From scattered sources to usable dataDatabases, files, and legacy systems feed a pipeline with quality checks, then documented datasets for analytics and AI. Code and runbook are included in the handoff. DatabasesFilesLegacy systems Pipeline Ready forAnalytics & AIYours to runCode & runbook Quality checks Sources, quality checks, and handoffDatabases, files, and legacy systems feed checked pipelines, then documented data and code for your team. Databases / Files / Legacy Your pipelineQuality checks included Analytics & AIYour code & runbook
Sources → Checks → HandoffYour team owns the work

Experience from prior
in-house BI work.

200+

Automated reports
and submissions

4yr

Owning the
pipeline layer

What I do

Strong foundations.
Useful outcomes.

01 / Primary practice

Data
engineering.

ETL pipelines, legacy migration, and quality checks. Built for your team to own.

Explore data engineering
02

Business analytics

Dashboards and shared definitions. A clear path from metric to cause.

 03

Storefront websites

Your store, catalog, and checkout. With a documented handoff.
How it works

A clear scope.
A proper handoff.

01

Scope it.

Agree on sources, output, checks, and price before work starts.

02

Build it.

Working data early. Clear checks for missing or conflicting records.

03

Own it.

Your code, field definitions, source mappings, and runbook.

The person behind the work

Christian Callahan.
Your engineer.

I work directly with you from scope through handoff. One person accountable for the build and the details.

Let's work together

Where is your
data stuck?

Tell me your sources, goal, and timeline.
Reply within one business day.

Email your project

christian.g.callahan@gmail.com