Andrey Costa
Brasília, Brasil · EST. 2025
Economist & Data Scientist
andreynacosta46@gmail.com
Personal archive — projects & ideas in progress

Thinking at the
intersection of economics,
data & the future
of money.

Current position
Analyst, BRB Bank
Data Science & Channel Strategy · Brasília · 4 yrs production
Graduate research
Master's in Economics
FGV EPPG · Bitcoin & the dollar as co-sovereign stores of value
Stack
Python · SQL · Spark · R
Hive · Impala · Power BI · FastAPI · React
Curriculum vitae
Available in PT & EN · PDF download

02 ——

Projects


github.com/andreyncosta →
01 —— Data Pipeline
Job Market
Lens

DuckDB-backed pipeline collecting and analyzing Data Scientist job listings from Adzuna and Jobicy APIs. Tracks salary trends, required skills, and remote availability — with LLM enrichment and a Streamlit dashboard on the roadmap.

02 —— App
Curing
YouTube

Minimalist YouTube client with no Shorts, text-only feed, and audio-only toggle. Built to reclaim attention from algorithmic decay. FastAPI backend with OAuth 2.0 + React Native/Expo frontend.

03 —— Public Policy
Emendas
Parlamentares

Interactive report on Brazilian parliamentary budget amendments (individuais, bancada, relator). Per-capita allocation maps by state, party & author execution rates, beneficiary concentration, and thematic classification — generated from Portal da Transparência open data by a pure-Python pipeline.

04 —— Econometrics
COPOM Credit
Transmission

Estimates the differential pass-through of SELIC rate shocks to household vs. corporate credit using an IV/2SLS strategy — the surprise component of each COPOM decision isolates the exogenous policy variation. Wu-Hausman endogeneity tests validate the IV. Results served via a FastAPI endpoint.

05 —— Macro
Kaldor Growth
Diagnostics

Empirical replication of Kaldor's stylized growth facts for Brazil against East Asian comparators (Japan, South Korea, China) and Latin American peers (Mexico, Chile). Tracks GDP per worker, TFP, capital deepening, and capital-output ratio across the Penn World Tables 10.0 from 1950 to 2019.

06 —— Creative Tool
Photo Profile
Quiz

20-question quiz that builds a complete photographic profile and generates three professional AI image prompts — primary, editorial, and candid/lifestyle — as if engineered by a commercial photographer directing an AI model session. Includes a photographer's direction note and ranked tool recommendations.


03 ——

Research


FGV EPPG · Master's Thesis in progress

The Bitdollar Hypothesis:
Bitcoin & the Dollar as
Co-Sovereign Stores of Value

What happens to the international monetary system if Bitcoin becomes a sovereign reserve asset alongside — not instead of — the US dollar? This research examines the macroeconomic and institutional implications of a "bitdollar" adoption scenario: the co-existence of BTC and USD as parallel stores of value at the state level, and the structural tensions this creates for fiscal policy, seigniorage, and monetary sovereignty in emerging economies.


View research repo on GitHub →

Institution
FGV EPPG — Escola de Políticas Públicas e Governo
Degree
Professional Master's in Economics
Status
In progress · 2024–2026
Methods
Monetary theory · Institutional economics · Empirical macro
Keywords
Bitcoin · Dollarization · Seigniorage · Reserve currency · Crypto-fiscal policy

04 ——

Writing


O Painel das Emendas: rastreando R$ bilhões em alocações parlamentares

Relatório interativo gerado a partir dos dados abertos do Portal da Transparência. Mapas per capita por estado, execução orçamentária por partido e autor, concentração de favorecidos e classificação temática das emendas. Uma radiografia do orçamento impositivo brasileiro.

O Pleno Emprego de Schrödinger

As estatísticas de desemprego brasileiras sistematicamente distorcem a realidade do mercado de trabalho. Um argumento sobre como a PNAD Contínua oculta a precarização estrutural por trás de taxas "históricas". (Em preparação para publicação.)