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Open to Winter 2027 co-ops and full-time roles from January 2027

Marina
Iglesias Medina

Supply chain, sourcing, and the numbers behind them.

B.S. Supply Chain & Operations Management · B.S. General ManagementPurdue University · Mitch Daniels School of Business. Graduating December 2026. Spanish and English.

The chain, end to end

  1. Demand signal

    Forecasts, orders, seasonality

  2. Sourcing strategy

    Suppliers, terms, trade-offs

  3. Capacity plan

    What the network can absorb

  4. Plant execution

    Allocation and production

  5. Customer

    Service level, on the shelf

Evidence, with its receipts

$20M

in projected profitability

Celsius distribution network design · PepsiCo case

18 mo

production planning horizon

Tactical planning tool · Michelin's largest N.A. plant

$9K

in daily inventory ordered

Peak daily volume · Chick-fil-A back of house

150+

customers served per hour

Throughput the operation was stocked and staffed for

300+

students and staff reached

Campus engagement · Brock Wilson Center for Women in Business

About

Two languages, two operating cultures, one supply chain

I work at the point where a forecast turns into a commitment — where capacity, cost and timing get decided months before anyone can see whether the decision was right. That is the part of the supply chain I find genuinely interesting, and it is the part I have spent a summer at Michelin and four case projects learning to model.

Most recently that meant building the Excel-based tactical planning tool behind 18-month production decisions at Michelin's largest North American manufacturing plant — integrating demand forecasts, capacity requirements and operational constraints so scenarios could be tested on paper, and building the Power BI dashboards that put end-to-end processes and production bottlenecks in front of the teams who act on them.

Spanish is my first language, and a semester at Universidad Carlos III de Madrid let me study supply chain systems from the other side of the Atlantic — comparing how Spain and the U.S. run the same operational problems, and how differently the workforce dynamics around them play out. For global sourcing work, that comparison has been more useful than any single class.

Languages
Spanish (native) · English (fluent)
Studied abroad
Universidad Carlos III de Madrid, Spring 2025 — on an Intercultural Learning Scholarship.
Based in
Alameda, CaliforniaWest Lafayette, Indiana during the school year

Experience

Planning, procurement, and two years of doing it daily

One internship modeling an 18-month horizon for a manufacturing plant, and two years ordering against demand in an operation that could not afford to be out of stock.

  1. Supply Chain Intern

    Michelin Tires

    May 2026 – August 2026 · Lexington, South Carolina

    Built the tactical planning tool behind 18-month production decisions at Michelin's largest North American manufacturing plant, and the Power BI dashboards the teams read it through.

    • Developed an Excel-based tactical planning tool integrating demand forecasts, capacity requirements and operational constraints, enabling scenario analysis and more informed 18-month production decisions at Michelin's largest North American manufacturing plant.
    • Evaluated production capacity, demand forecasts and resource limitations to identify supply risks, improve planning visibility and support proactive manufacturing allocation decisions.
    • Collaborated with Supply Chain, Manufacturing and Operations teams to develop Power BI dashboards mapping end-to-end processes, identify production bottlenecks and drive improvements in plant performance.
    • Excel modeling
    • Power BI
    • Scenario analysis
    • Demand forecasting
    • Capacity planning
    • Cross-functional collaboration
  2. Back of House Team Member

    Chick-fil-A

    Procurement & Inventory Management · November 2023 – December 2025 · West Lafayette, Indiana

    Two years owning daily procurement and inventory for a restaurant running at more than 150 customers an hour.

    • Managed daily inventory orders of $3,000–$9,000 using demand-based forecasting, optimizing stock levels, reducing waste and maintaining accurate product availability.
    • Trained and onboarded more than 9 employees on standardized operating procedures and food safety protocols, improving process consistency and operational efficiency.
    • Worked across 10+ back-of-house stations, supporting workflow optimization, bottleneck reduction and continuous operations in a fast-paced environment serving more than 150 customers per hour.
    • Demand forecasting
    • Inventory management
    • Procurement
    • Waste reduction
    • Training & onboarding
    • Workflow optimization

Case studies

Four problems, and what the modeling actually showed

Network design, tactical planning, throughput, and a budget built to be argued with. Each writeup follows the same shape: the situation, the analysis, and what came out of it.

PepsiCo

Network design

Celsius distribution network

Designing a cost-efficient network for a fast-growing brand

$20Mprojected profitability

A cost-efficient distribution network for Celsius, modeled end to end in advanced Excel — demand forecasts and financial projections, with production capacity and sourcing trade-offs analyzed to optimize the network decisions.

  • Network design
  • Demand forecasting
  • Sourcing trade-offs
  • Financial projection

January – May 2026 · Team of 5 · demand forecasting and financial projection

Read the case study: Celsius distribution network

Michelin North America

Analytics

Tactical planning tool & Power BI dashboards

Eighteen months of production, made visible before it happens

18 moplanning horizon

An Excel-based tactical planning tool integrating demand forecasts, capacity requirements and operational constraints — enabling scenario analysis for 18-month production decisions at Michelin's largest North American plant — plus the Power BI dashboards the teams read it through.

  • Production planning
  • Scenario analysis
  • Power BI
  • Capacity modeling

May – August 2026 · Supply Chain Intern · built and delivered the tool

Read the case study: Tactical planning tool & Power BI dashboards

Starbucks Coffee

Operations

Store facility & throughput analysis

Finding the bottleneck, then proving it was the bottleneck

Team of 6led end to end

A process and wait-time study of store operations — flowcharts, process analysis and queuing theory applied to identify bottlenecks and recommend changes that increased throughput and improved service levels.

  • Process analysis
  • Queuing theory
  • Bottleneck analysis
  • Wait-time analysis

Purdue coursework

Analytics

Black & Gold Country Club budget model

A budget that answers questions instead of stating a number

Scenariosnot a single forecast

A scenario-driven Excel budget model for a new country club — Power Query for data preparation, XLOOKUP/VLOOKUP for dynamic integration, and Scenario Manager to project costs and revenues under different assumptions.

  • Excel modeling
  • Power Query
  • Scenario Manager
  • XLOOKUP / VLOOKUP

August 2024 – December 2025 · Team of 3 · model construction and scenario design

Read the case study: Black & Gold Country Club budget model

Toolkit

What I reach for

Analytics & modeling

Where most of the work actually happens.

  • Excel modeling
  • Power BI
  • Power Query
  • SQL
  • Python
  • Data analytics
  • Financial modeling
  • Financial analysis
  • Quantitative analysis
  • Scenario analysis
  • Predictive analytics
  • Data mining

Sourcing & supply chain

Supplier decisions and what they cost.

  • Supply chain management
  • Strategic sourcing
  • Procurement
  • Vendor management
  • Inventory management
  • Demand forecasting
  • Production planning
  • Capacity planning
  • Logistics concepts & models

Operations & process

Turning a plan into something a plant or a store can run.

  • Process analysis
  • Queuing theory
  • Bottleneck analysis
  • Workflow optimization
  • Manufacturing strategy
  • Project management
  • Management science

Tools & ways of working

The parts that do not show up in a model.

  • Microsoft Office Suite
  • PowerPoint
  • Google Workspace
  • Canva
  • Business development
  • Intercultural communication
  • Training & onboarding
  • Mentorship
  • Adaptability
  • Spanish (native) & English

Leadership & education

Three years of building the room, not just being in it

Community, Engagement & Belonging Committee Director

Brock Wilson Center for Women in Business

September 2023 – May 2026

Nearly three years directing the committee responsible for whether people felt like they belonged in the program — and then mentoring one of them through her first year.

  • Collaborated with a 6-member committee to plan and execute campus engagement initiatives that fostered inclusion and strengthened community connections, reaching 300+ students and staff.
  • Independently organized and led select events, creating welcoming spaces that encouraged student participation and a stronger sense of belonging on campus.
  • Mentored a first-year Supply Chain & Operations Management student, supporting a smoother transition into college and greater confidence navigating the program.

Purdue University

Dual B.S. — Supply Chain & Operations Management and General Management

Mitch Daniels School of Business

Graduating December 2026 · West Lafayette, Indiana

Relevant coursework

  • Strategic Sourcing & Procurement
  • Supply Chain Analytics
  • Logistics Concepts & Models
  • Manufacturing Strategy
  • Project Management
  • Predictive Analytics
  • Data Mining
  • Management Science

Universidad Carlos III de Madrid

Study abroad · Spring 2025

Supply chain systems research

Spring 2025 · Madrid, Spain

  • Study Abroad Intercultural Learning Scholarship
  • Researched supply chain systems, comparing operational practices between Spain and the U.S.
  • Analyzed cross-cultural differences in workforce dynamics and their impact on efficiency and management approaches

Contact

Sourcing, planning, analytics — let’s talk about the work.

I’m looking for a Winter 2027 co-op and full-time work from January 2027, in global sourcing, procurement or supply chain planning. Email is the fastest way to reach me.

Open to Winter 2027 co-ops and full-time roles from January 2027

imarinaisabel@gmail.com · Alameda, California

Or send a message here