CLARITY FOR DECISIONS

From Data to Strategy

I craft data stories that turn complexity into clarity—so leaders can act with confidence.

EXPLORE MY PROJECTS
Executive portrait of Sebastian Ramirez
About

Hi, I’m Sebastian.

I build quantitative systems that drive decisions — from Monte Carlo risk models that size investment positions to ML pipelines that predict customer churn with 0.89 AUC. My work has spanned corporate valuation, demand forecasting, and market segmentation across industries from retail to semiconductors.

My background bridges Business Administration and engineering, which means I don’t just build models — I translate them into board-ready recommendations. Every project in this portfolio includes both the technical rigor and the strategic narrative that stakeholders need to act.

I focus on delivering end-to-end solutions: from data architecture and feature engineering through modeling, visualization, and deployment. My goal is simple: apply analytical depth and business acumen to solve real-world problems and help organizations grow smarter, faster, and more efficiently.

Services

Holistic Tech Partner

Clear, strategic, and execution-focused services. I partner with you to Plan, Build, and Optimize digital products that align technology with your financial goals.

Strategic Tech Consulting

70% of tech projects fail. Use the proven frameworks that market leaders rely on to scale.

End-to-End Product Engineering

Some systems can’t afford to fail. I build production platforms organizations rely on for years — not throwaway MVPs.

Financial Engineering & Analytics

Uncertainty makes intuition expensive. I use quantitative models and Monte Carlo simulations to make risk visible.

Portfolio

Selected work

Browse by theme. Tap or hover a tile to see the full summary.

NVIDIA — Valuation & Risk

NVIDIA — Valuation & Risk

Valuation your board can defend. We price risk—not guess it—by folding GARCH, Monte Carlo and DCF into one cohesive range for decisions.

LATAM Equity Scanner

LATAM Equity Scanner

1,062 companies, 11 countries, 18 sectors. Non-parametric statistics reveal which Latin American markets and industries truly outperform.

Credit Risk Scorecard

Credit Risk Scorecard

End-to-end scorecard pipeline: default probability modeling, feature engineering and risk segmentation for lending decisions.

Olist — Segmentation & Churn

Olist — Segmentation & Churn

Know who buys again and what to say. Cohorts, RFM and churn-risk to target the right people and lift repeat revenue—fast.

Favorita — Forecasting & Inventory

Favorita — Forecasting & Inventory

Fewer stockouts, less waste, more cash. Store-ready forecasts and simple inventory rules your teams can actually run.

Inventory Optimization

Inventory Optimization

CRISP-DM driven inventory modeling: demand analysis, reorder-point policies and safety-stock optimization to balance service level vs. holding cost.

Product Metrics

Product Metrics

Product experience deep-dive: engagement funnels, retention curves and key metrics to measure what users actually value.

JobPilot — AI Career Co-pilot

JobPilot — AI Career Co-pilot

AI-powered platform that reviews your background, conducts a smart survey and generates a fully optimized CV, with ATS-friendly templates and role-specific tailoring. From "Applying" to "Interview-ready" in minutes.

Prospecting Agent — AI Lead Gen

Prospecting Agent — AI Lead Gen

Fully autonomous lead pipeline: discovers job postings across 4 boards, scores fit with Gemini AI, drafts personalized outreach, and routes through Telegram approval — all at $0.50/month.

UNfresh — Campus Marketplace

UNfresh — Campus Marketplace

Mobile-first web app that maps vendors, vending machines and water points on campus, with real-time filters (open now, accepts card, promos). From craving to "got it" in one minute.

Cerrieta — Habitable Sculpture

Cerrieta — Habitable Sculpture

Parametric design meets feline ethology. CNC-precision cat towers in real Colombian wood that cats inhabit and humans proudly display. From algorithm to artisanal finish.

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Interested in transforming your data into stunning, investor-ready stories? — get in touch!

Open to roles in Financial Analytics, Data, Quant or BI. If you want technical rigor with a business focus, drop me a line.