GC

Independent Consultant / Product Leader · Austin, TX

Geneva
Castellanos

Building the data and product infrastructure that makes companies grow smarter.

Scroll

About

The rare
bridge
between
data &
strategy

I build products and systems designed to outlast me — after the sprint ends, after the team changes, after I move on. The infrastructure I've built has survived my departures, scaled without me, and contributed to two acquisitions.

I'm a data and product consultant with over a decade of experience at companies like Apple, Sephora, Upwork, and WP Engine — spanning hands-on analytics work all the way to executive product roadmaps.

What makes me effective isn't picking a lane. It's that I speak both languages fluently: the technical language engineers trust, and the strategic language executives need. I've built data pipelines, architected CDPs, led multi-year roadmaps, and shipped zero-to-one products — often in the same role.

I take on a small number of engagements at a time, which means you get focused attention and real ownership — not a junior team following a playbook.

Based in Austin, TX. Available for remote and on-site engagements.

Services

Four ways
I can help

Every engagement is scoped to your situation — not forced into a pre-packaged service. These are the domains where I work, and most projects span more than one.

01

Data & Analytics Infrastructure

Building or rebuilding the data foundation that lets your company actually trust its numbers. From pipeline architecture to executive dashboards to data quality SLAs.

Snowflake Looker Tableau Datadog Metabase
02

Martech & CDP Strategy

Designing the customer data infrastructure that makes personalization actually work — across email, push, SMS, and paid. Reduce ad spend, improve targeting, close the attribution gap.

Segment Braze Branch Optimove Amplitude
03

Product Strategy & Roadmaps

Turning ambiguous problems into clear, prioritized roadmaps with executive buy-in. I've led zero-to-one builds and multi-year platforms — I know what separates the ones that ship from the ones that stall.

Roadmapping OKRs Agile Discovery
04

AI & Automation Strategy

Helping organizations cut through the noise — identifying where automation creates real leverage, which tools are right for your stack and stage, and building the workflows to prove it fast. From end-to-end campaign automation to startup workflow buildouts, I make AI practical, not theoretical.

AI Strategy Workflow Automation Tool Selection LLMs Prompt Engineering

How I Work

Three ways to
engage

Every engagement is structured to match where you are. Some clients need a strategic partner on retainer. Others need a defined project delivered. Others need to move in weeks, not months.

Model 01

Advisory &
Fractional

Ongoing strategic guidance without a full-time hire. I work alongside your team as a senior partner — available for decisions, reviews, and direction-setting on a consistent basis.

Best fit Funded startups and growth-stage companies that need senior data or product leadership on a flexible basis.
Model 02

Project
Based

A defined problem, a defined output, a fixed fee. I scope the work upfront, deliver with precision, and hand off something your team can own. No surprises on scope or budget.

Best fit Companies with a specific challenge — a CDP audit, a competitive analysis, a data architecture redesign.
Model 03

Sprint
Engagement

Four to six weeks, intense and focused. I embed with your team, move fast, and deliver infrastructure that keeps working after I'm gone. Built for companies that can't afford to wait.

Best fit Early-stage startups that need to build fast — data platforms, automation workflows, martech foundations.

Selected Work

Results that
speak for themselves

Sephora
Product Manager, Marketing Technology
$3M
Saved annually via martech platform rebuild, supporting $95MM in campaign revenue.
Upwork
Sr. Technical PM, Data & Analytics
+10%
Retention QoQ after multi-touch attribution and company-wide OKR framework with CEO sponsorship.
Apple
Product Manager IV, Data & Analytics
+30%
Sales forecast accuracy via ML-powered B2B data product, deployed worldwide.
Levelset
Product Manager, Data Instrumentation
3 mo.
Full data platform and pipelines built — directly contributing to acquisition by Procore.
RetailMeNot
Senior Data Analyst, Global Analytics
CDP
Led 5-year personalization roadmap across global brands — contributing to acquisition by Valassis.
WP Engine
Product Manager II, Platform
+25%
System uptime via Kubernetes migration, reducing customer complaints 15% and doubling engineering team size.
Start a conversation

Selected Thinking

How I approach problems

Competitive Strategy

Weedmaps: Competitive Analysis & Opportunities

Architectural redesign opportunities, product vision, and organizational gaps identified through deep competitive analysis.

Data Architecture

Unity Ads: Data Architecture Proposal

Redesign of Unity Ads data architecture to optimize for identity stitching and executive-level performance tracking.

Product & Search Strategy

Talent.com: Improving Search Relevance for Jobseekers

Identifying opportunities to improve search relevance and build better algorithms for jobseeker matching at scale.

Technical Fluency

The stack I work in

Data & Analytics
  • Snowflake
  • Looker
  • Tableau
  • Google Analytics
  • Thoughtspot
  • Metabase
  • ElasticSearch / Kibana
Marketing & CDP
  • Segment.io
  • Braze
  • Branch
  • Optimove
  • Tune
  • Apptentive
  • Optimizely
Cloud & DevOps
  • AWS / S3
  • Google Cloud Platform
  • Datadog
  • Kubernetes
Product & Testing
  • Jira
  • Taplytics
  • TestRails
  • Crashlytics
  • Optimizely
Data Engineering
  • SQL
  • DBVisualizer
  • DataGrip
  • Google Data Studio
AI & Automation
  • Claude
  • ChatGPT
  • Gemini
  • Perplexity
  • Zapier
  • n8n

Let's
work
together

I take on a limited number of engagements to ensure quality and focus. If you're working through a data, martech, or product challenge, I'd love to hear about it.

Tell me about your project