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Gabriel Goulart

@gabrielgoulart

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I build production ML, analytics, and LLM systems that drive measurable product and business growth.

Brazil

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What I'm looking for

I'm looking to build and lead production ML, analytics, LLM, or quantitative systems where rigorous experimentation, reliable data infrastructure, and measurable product outcomes matter.

I've built production ML and analytics systems across marketplaces, commerce, logistics, sports technology, and quantitative trading. At Whop, I architected the data and analytics stack through 12x GMV growth and 15x growth in daily user minutes.

At Yalo, I led development of Latin America's first LLM-based autonomous sales assistant and increased average ticket size by 40% through recommendation experimentation. At Foxtrot, my productized ETA models contributed an estimated 15% ARR growth and powered more than 1 million delivery notifications each month.

I'm now building RavenGraph's live systematic trading stack on Hyperliquid, spanning signal generation, risk, execution, and production ML research. My work combines rigorous experimentation, data infrastructure, model reliability, and applied AI systems.

Experience

Work history, roles, and key accomplishments

Current

Co-Founder & Head of Data

Current

RavenGraph

Sep 2025 - Present (1 year)

Built and operated a live systematic trading book on Hyperliquid end to end, including signal generation, risk, execution, and sub-account architecture. Owned the research-to-production stack with walk-forward ensembles and containerized deployment on GCP.

Gradient Boosting Sequence Modeling GCP Cloud Run Jobs Cloud Build Artifact Registry Temporal Graph Neural Networks Ablation Frameworks HPO Model Selection

Senior Data Scientist - DS & Analytics Lead

Whop

May 2024 - Aug 2025 (1 year 3 months)

Architected the end-to-end data and analytics stack through 12x GMV growth and 15x growth in daily user minutes. Designed and built the data warehouse on GCP and the company's experimentation engine on Statsig.

GCP Airbyte BigQuery dataform Segment Mixpanel Metabase Statsig A B Testing Statistical Methods Data Governance Taxonomy ML models

Senior Machine Learning Engineer

Yalo Inc

Mar 2022 - Apr 2024 (2 years 1 month)

Led development of Latin America's first LLM-based autonomous sales assistant, integrated with WhatsApp and Meta APIs. Owned recommendation algorithm experimentation, increasing average ticket size by 40%.

LLM RAG Pipeline Vector Databases Generative AI Recommendation Systems Experimentation Mentorship

Lead Data Scientist

Foxtrot Systems

Dec 2020 - Mar 2022 (1 year 3 months)

Developed and scaled ETA-as-a-Product, an ML model estimating delivery windows with 90% confidence, adopted across three continents. Grew company ARR by an estimated 15% through productized ETA models.

Machine Learning ETA Modeling Model Monitoring Dashboarding ML Stacks

Data Scientist

Joga Sports Tech

Dec 2016 - Dec 2020 (4 years)

Built neural networks and Kalman filters to improve GPS accuracy on low-frequency consumer devices. Developed a performance analytics stack deriving soccer metrics from wearable sensor data.

Neural Networks Kalman Filter GPS Performance Analytics Wearable Devices