Alejandro Sarasti Sierra

Demographic Change in Colombia's Regions

Fri, 02 Oct 2026 00:00:00 +0000

with Juliana Jaramillo-Echeverri · Book chapter, volume on 30 years of the CEER, Banco de la República · New departmental fertility series, 1958–2015

Gender Inequality and Demographic Change: Implications for Long-Run Growth

Thu, 01 Oct 2026 00:00:00 +0000

with Juliana Jaramillo-Echeverri and Luz Adriana Flórez · Banco de la República working paper (Documentos de Trabajo sobre Economía Regional y Urbana)

Real Effects of Accounting Changes: How Do Changes in Firms' Observables Affect Productivity and Access to Credit?

Thu, 24 Sep 2026 00:00:00 +0000

M.A. thesis, Universidad de los Andes · Advisor: Christian Posso (Banco de la República) · IFRS adoption in Colombia, credit and productivity

Exploring gender gaps in Colombia

Sun, 01 Mar 2026 00:00:00 +0000

Ensayos sobre Política Económica, No. 111 · with M. T. Ramírez-Giraldo (coord.) and 35 co-authors · My section: gender demographic trends, 1973–2023

The geography of informality: the case of Colombia

Wed, 23 Jul 2025 00:00:00 +0000

with Karina Acosta, Juliana Jaramillo-Echeverri and Daniel Lasso-Jaramillo · Spatial Economic Analysis (2025)

New evidence on labor and business informality in Colombia

Sat, 01 Feb 2025 00:00:00 +0000

Ensayos sobre Política Económica, No. 108 · with A. Otero-Cortés (coord.) and 20 co-authors · My section: labor informality in small municipalities

Experience

Mon, 01 Jan 0001 00:00:00 +0000

Positions

Research Assistant, World Bank · Jan 2025 – present
Firm-level financial datasets and econometric work on business dynamism and productivity in Colombia.

Research Intern, Banco de la República, Center for Regional Economic Studies (CEER), Cartagena · Jan – Dec 2024
Contemporary and historical demographic and economic datasets for research on subnational informality and demographic change.

Research Assistant, ECSIM, Medellín · Jul 2021 – Oct 2022
System-dynamics economic models in Matlab (Simulink).

Teaching

Mon, 01 Jan 0001 00:00:00 +0000

Upcoming: 2027-1

Impact Evaluation with Machine Learning, co-instructor with Ana María Patrón
Evaluación de Impacto con Machine Learning · Continuing education, School of Economics, Universidad de los Andes · Live online · First semester 2027

A professional course on using machine learning to strengthen impact evaluation: estimating heterogeneous effects, building counterfactuals and turning evidence into policy decisions, with applied work in R and Python.

Universidad de los Andes

Microeconometrics (graduate), Teaching Assistant · Aug – Dec 2026
Department of Economics. Tutorial sessions, course materials and problem sets.