Breaking Games logoCurrently an Extern @Breaking Games·🟢 Open to work
Yuliska Villarreal portrait

Financial operations professional turning data into insights and decisions

3+ years in financial & business operations, AR, billing, reconciliations, AP. Detail-oriented, organized, process-improvement focused. Building SQL & financial modeling for FP&A.

Work samples

Projects include hands-on work building SQL databases from raw operational data, applying the same rigor I bring to financial reconciliation and reporting.

  • SQL & Database Architecture Externship with Breaking Games
    SQL & Database Architecture Externship with Breaking Games
    Breaking Games logo

    Breaking Games · ✅ Verified by Extern · ⏱️ In progress

    SQL & Database Architecture Externship with Breaking Games

    Turn six messy CSVs into an analytics database and a Q4 dashboard that drives real business decisions. SQL + Claude.

    Analytics Database DesignData AnalysisSQL FundamentalsData Storytelling
  • Amazon Operational Strategy & People Analytics Externship
    Amazon Operational Strategy & People Analytics Externship
    Amazon logo

    Amazon · Jun 2026 · ✅ Verified by Extern

    Amazon Operational Strategy & People Analytics Externship

    Imagine shaping how AMAZON — yes, THE Amazon — welcomes and keeps its workforce. Every year, Amazon loses billions because new hires leave before Day 90.You’re going to fix that. In this externship, you’ll web scrape real-world employee reviews from across the web, extract actionable insights, and design persona-driven strategies to help Learning Ambassadors connect smarter, faster, and more humanely.It’s part research, part strategy—and all about learning how people data drives big decisions.

    OperationsStrategyAI & MLData AnalysisPythonPresentation Skills

About me

3+ years in financial & business operations, AR, billing, reconciliations, AP. Detail-oriented, organized, process-improvement focused. Building SQL & financial modeling for FP&A.

I bring precision and attention to detail to every financial process I touch; from reconciling accounts to tracking AR aging to building reports that inform real decisions. I care about data accuracy and clear communication, and I'm now applying that same discipline to financial modeling and analysis.

Externships

SQL & Database Architecture Externship with Breaking Games

Breaking Games

Experience

Financial Operations Specialist

AmpUp · Aug 2025 - Oct 2026

Billing & Customer Operations Specialist

SocialLex · Oct 2022 - Nov 2024

Education

University of West Los Angeles

M.S. Management, Leadership and Technology · Class of 2028

UCSC Silicon Valley Extension

Certificate in Data Science. · Class of 2025

University of the coast CUC (Colombia)

B.S. Finance · Class of 2015

Skills

Web scrapingText analysisPersona-driven strategyExcel financial modelingThree-statement modelsDiscounted cash flow (DCF)Investor deck preparationUsing AI to accelerate analysisExcelCorporate FinanceFinancial AnalysisJupyter NotebookOperationsSQLTableauTime ManagementWorkforce Data Analysis

✅ Verified by Extern · ⏱️ In progress

SQL & Database Architecture Externship with Breaking Games

Turn six messy CSVs into an analytics database and a Q4 dashboard that drives real business decisions. SQL + Claude.

Analytics Database DesignData AnalysisSQL FundamentalsData Storytelling

Overview

The externship converted six messy CSV files from an e-commerce operation into a structured analytics database and a Q4 dashboard. The work cataloged each source, defined schemas, and implemented transformations and joins in SQL. Deliverables included the cleaned database schema and the dashboard-ready dataset.

SQL & Database Architecture Externship with Breaking Games

What I've accomplished

I inventoried six raw data sources, implemented SQL queries in a SQLite database, and produced a living document with five instant answers (top products by units and revenue, catalog size, Meta ad spend, unique checkout sessions).

Project breakdown

I inventoried six raw data sources, wrote and ran SQL queries against the SQLite database, and recorded five instant answers (top products by units and revenue, catalog size, Meta ad spend, unique checkout sessions) in a living document.

Google Docs
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✅ Verified by Extern

Amazon Operational Strategy & People Analytics Externship

Imagine shaping how AMAZON — yes, THE Amazon — welcomes and keeps its workforce. Every year, Amazon loses billions because new hires leave before Day 90.You’re going to fix that. In this externship, you’ll web scrape real-world employee reviews from across the web, extract actionable insights, and design persona-driven strategies to help Learning Ambassadors connect smarter, faster, and more humanely.It’s part research, part strategy—and all about learning how people data drives big decisions.

OperationsStrategyAI & MLData AnalysisPythonPresentation Skills

Overview

The work mapped operational roles across an Amazon fulfillment centre, collected and cleaned employee voice data from Glassdoor and YouTube, and prepared that dataset for analysis. Themes and sentiment were extracted and grouped into named workforce segments. The final deliverables included prioritized cohort scores and a two-week, pilot-ready scheduling intervention with a five-slide pitch deck.

Amazon Operational Strategy & People Analytics Externship
Google Slides
Access

What I've accomplished

I produced a role-by-role workforce structure, a cleaned CSV of employee feedback, theme-tagged sentiment summaries, ranked workforce segments, and a two-week scheduling pilot with a five-slide pitch deck.

Project breakdown

View all work