Sebastian Marrero
sebastian marrero
AI, commerce & product
new york city

I'm a generalist with a background in financial technology and a growing focus on AI products and strategy. Previously at Nomura Securities (Instinet) where I held Series 7, 57, and 63 licenses — working at the intersection of electronic trading infrastructure, client analytics, and product development. I studied Economics at Vanderbilt University, having transferred from Houston Community College. Outside of work I DJ, think about fashion, and attend public lectures on whatever seems interesting.

Nomura Securities (Instinet) · Technology Solutions Analyst
Jul 2023 – Nov 2025 · New York, NY
Drove software licensing onboarding for 50+ broker connections generating $260K in annual revenue. Coordinated sprint cycles across product, QA, and engineering to deliver trading platform enhancements including new asset class integrations. Built dashboards tracking system usage across a global client base, informing performance improvements and client workflow changes.
Columbia University — LEAP · Winter 2026 Momentum Bootcamp
Jan 2026 · New York, NY
Analyzed large-scale climate datasets (NASA CERES ocean temperature and radiation data) using Python and Xarray. Applied RNNs, CNNs, and LSTM models to predict global temperature maps from CO₂/CH₄ time series.
view credential
LEAP Momentum Bootcamp in Climate Data Science — Sebastian Marrero
Castle Placement · Analyst (part-time)
Aug – Dec 2022 · Remote
Compiled investor profiles on Canadian agritech companies targeting $812M in capital raises. Conducted private market research via PitchBook and CapIQ for PE, VC, and pre-IPO clients.
Bernstein · Private Wealth Management Intern
Jun – Aug 2022 · Washington, DC
Assisted advisors managing $1.6B AUM. Forecasted wealth scenarios for HNW clients and conducted due diligence on private equity and impact products.
Archive Search
resale-search.vercel.app

Interprets natural language queries across fragmented resale marketplaces and luxury retailers — Grailed, Depop, Vestiaire Collective, The RealReal, Yahoo Japan, Mercari Japan, and more. Uses the Claude API to extract size, color, and condition filters and route searches across 15 platforms. Built with React + TypeScript, deployed on Vercel.

Seb's Archive Shop
sebs-vintage-and-archive-shop.myshopify.com

Archive menswear resale — the project that led to building Archive Search.

Archive Search

How I designed and built a natural language search tool across 15 fragmented resale platforms — covering product thinking, Claude API integration, and URL engineering.

Vanderbilt University
B.A. Economics · Minors in Data Science and Business
Aug 2020 – May 2023 · Nashville, TN
Dean's List: Fall 2021, 2022, Spring 2023
Houston Community College
A.S. Engineering Science
Aug 2019 – May 2020 · Katy, TX
Dean's List: Fall 2019, Spring 2020 · transferred to Vanderbilt

Independent projects exploring data, marketplaces, and decision systems.

Credit Card Fraud Detection · Supervised classification (LightGBM, XGBoost) on imbalanced data. 79% recall. · github
SaaS Churn Modeling · End-to-end churn prediction with Random Forest and interpretability analysis. · github
Airbnb Market Analysis · SQL + Python sentiment analysis on NYC short-term rental data. · github
Unicorn Company Analysis · Global startup funding trends via MySQL + Tableau. 1,200+ companies. · github
Dres & Seb · DJ duo
Deep, minimal, and tech house. Based in New York.
Dres & Seb Dres & Seb — New York City Dres & Seb
Archive & Vintage Fashion
Deeply into researching designers — their philosophies, references, and what drives their work. Current fixations: Undercover, Ann Demeulemeester, Comme des Garçons, Number (N)ine, Rick Owens, Carol Christian Poell, Raf Simons, Guidi, Maison Margiela, among others. Buying and selling on Grailed and Depop.
grailed depop vintage shop
Vanderbilt Business Review · Staff Writer · 2022–2023
Published on H-1B immigration, China's technology transfer policy, and international labor markets.
Expanding H-1B: The Necessity of Skilled Foreign Labor China's Forced Technology Transfer Policy
Parker Solar Probe · NASA · 2018
My name is on a spacecraft currently in orbit around the Sun.
parkersolarprobe.jhuapl.edu view certificate
Parker Solar Probe Certificate — Sebastian Marrero