Matthew Kassel
Freelance Data Enrichment & IT Fixer
Turning chaotic databases into clean revenue gold.
"Because good data deserves a little mazel — and zero duplicates."
About Matthew
Hey team, Matthew Kassel here — your freelance data wrangler and IT fixer. Brooklyn-born, Columbia-educated, now roaming the world remotely while still judging pizza by New York standards.
I live for turning chaotic databases into clean, enriched gold — whether that's appending firmographics, deduping records, building ETL pipelines in Python/Airflow, or just making sure your CRM doesn't look like a dumpster fire. Late 30s, happily over-caffeinated, and always down for a tech deep-dive or a quick 'oy vey' when APIs break on Shabbat.
Tech Obsessed
Geeking out over new LLMs, Python libraries, and AI ethics. Always exploring the latest data tools.
Team First
Warm and collaborative mindset. I'm the guy who offers to help clean up your spreadsheet mess.
NYC Roots
Born and raised in Brooklyn. Carrying that classic NYC energy mixed with genuine enthusiasm.
Data Expert
Highly intelligent and analytical. I love diving deep into messy datasets to find the gold.
What I Do
Database Cleaning & Deduplication
I scrub your data until it shines. Removing duplicates, standardizing formats, and validating entries so your team can trust the numbers.
Book a free audit →Data Enrichment
Appending firmographics, contact details, and technographics. I turn sparse records into full 360-degree profiles ready for action.
Book a free audit →Custom ETL Pipelines
Building robust Python and Airflow pipelines to move and transform your data. From messy CSVs to clean data warehouses.
Book a free audit →API Integrations & Automation
Connecting your tools and automating workflows. If it has an API, I can make it talk to your other systems.
Book a free audit →CRM Hygiene & Lead Scoring
Making sure your CRM doesn't look like a dumpster fire. Implementing scoring models to prioritize your best leads.
Book a free audit →"Pro tip: never trust a CSV that opens perfectly in Excel on the first try."
— Matthew
Let's Connect
No forms that feel like a job application — just tell me your biggest data headache.
Hit me with your messiest data problems — I've seen worse. I'll get this enrichment done before candle-lighting so you can enjoy the weekend.