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markjayson13/README.md
Mark Jayson Martinez Farol, quantitative economist, Las Vegas.

I build research-grade data systems for messy administrative datasets and use them to study higher-education finance, student aid, college pricing, and macroeconomic questions.

M.A. in Quantitative Business Economics and B.S.B.A. in Economics with a theatre minor, University of Nevada, Las Vegas. The work sits across economics, data engineering, empirical research, and technical communication: I write the pipeline, run the regression, and ship the platform.

Open to Economist, Research Analyst, Data Analyst, and Financial Analyst roles. Remote, hybrid, or relocation.

By the numbers. 2004 to 2024 IPEDS file: 147,782 by 2,676. Labeled release full-panel-labels-v1: 141,711 by 2,721. A 39-check acceptance audit. 25-plus years of Title IV volume. 200-plus students a term. 10 researchers mentored.

The 2004–2024 consolidated IPEDS analysis file is 147,782 rows × 2,676 columns. Labeled release full-panel-labels-v1 is 141,711 rows × 2,721 columns. Builds run a 39-check acceptance audit.

Act I — The economist

Open the curtain — program notes

I immigrated to the United States from the Philippines at 14.

Founder and sole employee of Mark Jayson Nation LLC (Las Vegas, formed October 2026). The house ships Macro by Mark, an economics learning and U.S. macro research platform; getriff, an iOS workout app in TestFlight; and a Macro by Mark island-tycoon game now in development.

I edit UNLV's Undergraduate Economics Working Paper Series, which I helped build.

Research focus: higher-education pricing, financial-aid packaging, federal cost-of-attendance policy, panel econometrics, causal inference, dynamic specifications, and large-scale data validation.

On the research bill

  • Published "Revisiting Bennett's Hypothesis" in Spectra Undergraduate Research Journal (2025)
  • Presented at WEAI's 100th Annual Conference
  • Authored 4 working papers on higher-ed pricing, financial aid packaging, and federal cost-of-attendance policy
  • Helped build, and now edit, the UNLV Undergraduate Economics Working Paper Series

Teaching and mentorship

At UNLV I supported instruction in economics, statistics, econometrics, and senior capstone research: lectures and review sessions for 200+ students a semester, course materials, high-volume office hours, and 10 undergraduate researchers mentored through end-to-end empirical projects.

Act II — The work

Now playing

Macro by Mark, economics learning and U.S. macro research

Indicators, release calendars, dashboards, forecasting, and reference workflows. Integrates FRED, BEA, BLS, Census, and World Bank, with Marco, an AI macro assistant, and a status page built to fail loud, never lie green.

getriff, an iOS workout app in TestFlight

iOS workout app, in TestFlight.

A Macro by Mark island-tycoon game is in development.

The data season

IPEDSDB_Panel. 2004 to 2024 consolidated file, 147,782 by 2,676. Labeled release full-panel-labels-v1, 141,711 by 2,721.

Reproducible Python and SQL pipeline from NCES/IPEDS Access databases to unbalanced UNITID-by-year panels. The 2004–2024 consolidated analysis file is 147,782 × 2,676. Labeled release full-panel-labels-v1 is 141,711 × 2,721.

FSAVolumeReports_Panel, 25-plus years of Title IV volume reports

Downloads, harmonizes, panelizes, QA-checks, and exports 25+ years of Federal Student Aid Title IV volume reports into institution-by-award-year panels for grants, campus-based aid, and loans.

IPEDS-FSA_Panel, Federal Student Aid reports linked to IPEDS

Links those FSA volume reports to IPEDS institutions, aligns aid periods, and exports combined research panels.

IPEDS_Paneling, a DuckDB pipeline for NCES IPEDS

Python and DuckDB pipeline that downloads, harmonizes, QC-validates, and panelizes NCES IPEDS into research-ready institution-year datasets.

COA_FINAID_SUBS, replication code for cost-of-attendance research

Public replication code for research on cost-of-attendance headroom and institutional grant aid, built from the IPEDS panel. Baseline sample: four-year Title IV public and private nonprofit institutions, 2009–2023.

Scenery

markjaysonwebsite-v2, personal site built with Astro

Personal site, Astro on Cloudflare Pages. Live at markjayson.com.

creative-markjayson, creative portfolio on Cloudflare Pages

Creative portfolio, Astro on Cloudflare Pages. Live at creative.markjayson.com.

Open the curtain — how a panel gets made

IPEDSDB_Panel extracts annual IPEDS Access databases with mdb-tools, harmonizes them in DuckDB, and writes a research-ready UNITID-by-year panel. The extended 2004–2024 consolidated analysis file is 147,782 rows × 2,676 columns. The labeled release full-panel-labels-v1 is 141,711 rows × 2,721 columns. A 39-check acceptance audit gates the build.

FSAVolumeReports_Panel keeps the Federal Student Aid side at the OPEID-by-award-year grain: acquisition, identity normalization, program harmonization, and suppression handling for grants, campus-based aid, and loans, across 25+ years of Title IV volume.

IPEDS-FSA_Panel consumes both outputs, resolves annual UNITID links, and exports the combined research panels. It does not rebuild either upstream panelizer.

IPEDS_Paneling is the separate Python and DuckDB lane for downloading, harmonizing, and QC-validating NCES IPEDS into institution-year datasets.

COA_FINAID_SUBS is the public replication layer for cost-of-attendance headroom and institutional grant aid. It starts from the clean IPEDS panel, builds the 2009–2023 four-year public and private nonprofit sample, and estimates institution-level fixed effects. Those estimates are associations, not student-level packaging results.

Open the curtain — house lights

Macro by Mark's status page probes the app's own endpoints and folds in vendor health. Strict-mode checks return a real failure when configuration is broken, instead of a cheerful 200. A sentinel validates the chat config without calling the model. Vendor probes time out, cache, and degrade to "unknown," so a third-party outage cannot take the page down. The monitoring vendor is an environment variable (betterstack, instatus, statuspage, or none), and indicator groups roll up worst-of-fold.

From the archive to the stage: NCES IPEDS, student aid, and FRED, BEA, BLS, Census, and World Bank move through mdb-tools, DuckDB, and a QA gate into year panels, Macro by Mark, working papers, and replication code.

Intermission — Instruments

Area Tools
Data engineering Python · pandas · DuckDB · SQL · PyArrow · mdb-tools
Econometrics Stata · R · Excel
Front end Next.js · TypeScript · React · Tailwind · Zustand
Infra / services Supabase · Vercel · Trigger.dev · Upstash · Stripe
Data sources NCES/IPEDS · Federal Student Aid · FRED · BEA · BLS · Census · World Bank

Portfolio sites are Astro on Cloudflare Pages.

This season

Pixel grid of public GitHub contributions over the past year. The count is redrawn from GitHub by a scheduled Action.

The grid is redrawn from the public contribution calendar by a scheduled Action. The count in the card is GitHub's, and it updates when the calendar does.

Curtain call

markjayson.com   LinkedIn   Email markjayson@markjayson.com   Letterboxd

Open to Economist, Research Analyst, Data Analyst, and Financial Analyst roles. Remote, hybrid, or relocation.

Mark Jayson Martinez Farol, Las Vegas. Two pixel Lemongrab figures stand on a hill.

Pinned Loading

  1. IPEDSDB_Panel IPEDSDB_Panel Public

    Build a research-ready, QA-backed unbalanced UNITID-by-year IPEDS panel from NCES IPEDS Access databases (2004–2023) using a reproducible Python and SQL pipeline.

    HTML

  2. FSAVolumeReports_Panel FSAVolumeReports_Panel Public

    Reproducible pipeline for downloading, harmonizing, panelizing, QA-checking, and exporting Federal Student Aid Title IV volume reports into institution-by-award-year panels for grants, campus-based…

    Python

  3. IPEDS-FSA_Panel IPEDS-FSA_Panel Public

    Links Federal Student Aid volume reports to IPEDS UNITID-year panels and exports labeled aid-alignment research files. Upstream panels stay in FSAVolumeReports_Panel and IPEDSDB_Panel.

    Python

  4. COA_FINAID_SUBS COA_FINAID_SUBS Public

    Replication code for institution-year cost-of-attendance headroom and full-time, first-time aid associations. Baseline sample is four-year public and private nonprofit Title IV institutions, 2009-2…

    Python