William Perez

Data Architect

I work with you as a strategic partner and hands-on builder.

© 2026 williamoperez LLC. All rights reserved.

Services

Data Foundations Assessment

Before you buy a data platform, migrate off your current one, or make your first data hire, I look at what you have and tell you what I would do and why. The same goes if you have already built something and want an outside look at where to take it next.

Scoped Project

You have a project that needs to get done. I scope it and price it up front. Then I build it and hand it over in a state you can run.Things like:

  • Data platform migrations

  • Standing up a data platform for an org that doesn't have one yet

  • Moving your transformations into dbt

  • Data modeling

  • Metrics layer

  • Ingestion

Fractional Data Architect

You have people doing the data work, but no one senior to make architectural decisions. Or the person who made them left. I come in, help make the decisions, and build alongside your team.

  • Architecture and tool decisions

  • Data governance

  • Data modeling standards

  • Mentoring

About

The best data work I have done came from three things: genuine curiosity about the domains I work in, relationships with the people who live inside those domains every day, and understanding them deeply enough to build things that serve real needs.

"William's ability to think both short and long term when modelling our data, and safeguarding the quality of the data structures he built, meant we could confidently stand behind the business decisions we recommended through our analysis."
Staff Data Scientist, Zapier"William's expertise in data modeling standards led to his role as the main evangelist for standards and author of many architectural decision records. This effort was instrumental in building a foundation for cohesion and alignment for our distributed data teams."
Manager, Data Platforms, Zapier"By engaging in design reviews and helping teams navigate tradeoffs between business and immediate engineering needs, all that with empathy, he positioned himself as a strong technical leader."
Principal Software Engineer, Zapier"He was integral and led business owner interviews during his process to identify business events before creating a data environment meant to support product insights."
Associate Director, Outcomes Research, American Specialty HealthMore recommendations on LinkedIn

Get in touch

Whether you want to talk through a data problem or scope a project, send me a note (or book a call). I will reply within a day.[email protected]linkedin.com/in/williamoperez