Welcome!

I'm Daniel Mermelstein, currently Director of Data at Sylva.

About Me

My career has been a journey through various parts of the data spectrum:

History degree → 10-person startup → go-to (AKA only) business intelligence analyst at a global non-profit → data analyst (adtech) → data analyst / data scientist (fintech) → data engineer → data leader.

Fun Side Projects: (See All Projects »)

Over the years my project work has grown across a few areas. Below are some highlights I've published or am able to discuss publicly. My professional experience also includes:

  • Leading high-performing data teams
  • Automating accounting processes for a holding company across 12 subsidiaries. Talk about serious cost reductions.
  • Closing a US consumer bank (you should really ask about this one!)
  • Building A/B test analysis platforms, data enrichment pipelines (e.g. from LinkedIn), and automated reporting solutions for product, marketing, finance, accounting, and general BI.
  • DWH migrations or implementing a DWH solution from 0 to 1
  • Designing and implementing systems for Retrieval Augmented Generation (RAG) with PostgreSQL and pgvector

Data Engineering & Orchestration

Web Applications & Data Visualization

  • Searchable database of all the 3K programs in NYC: NYC3K.com
  • Automated surf forecasts for the Hudson River: Downwinder
  • Sportsbetting data and NBA game predictions: BloomBet Terminal
  • Personalized rowing workouts: Row Hard

AI, Language & Development Tools

Beyond my professional life, I'm an avid extracurricular athlete and made it to the final round of selection for Team USA in 2015. I am a 5x Bronze medalist at the Dragon Boat World Championships.