Main
Daniel Vartanian
Complexity Scientist and Data Scientist
Experience
Researcher
São Paulo, SP, Brazil
Present - 2024
- Development of an agent-based model addressing the global syndemic phenomenon in Brazilian children under five years old.
- Development of data science reports.
- Creation of tools and software for scientific research.
- Development of training courses in R programming and open science.
- Fellowship from Brazil’s National Council for Scientific and Technological Development (CNPq).
Researcher
University of São Paulo (USP)
São Paulo, SP, Brazil
2025 - 2022
- Development and analysis of the largest dataset on Brazilian chronotypes (n = 115,166).
- Conducted a new test of the hypothesis regarding the influence of latitude on the distribution of human chronotypes, based on new and higher-quality evidence, contributing to a deeper understanding of the phenomenon of entrainment (synchronization) of biological rhythms in ecological contexts.
- Creation of tools and software for scientific research.
- Participation in graduate-level courses, conferences, and symposia.
- Scholarship from the Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES).
Teacher
Government of the State of São Paulo
São Paulo, SP, Brazil
2024 - 2024
- Teaching experience at Professor Colombo de Almeida State School and Captain Pedro Monteiro do Amaral State School, delivering lessons to technical high school classes.
Researcher
University of São Paulo (USP)
São Paulo, SP, Brazil
2022 - 2019
- Participation in projects using internal and external databases of varying sizes and complexities (e.g., Corações de Baependi Cohort (MG), Sleep and Pregnancy Project).
- Development of models and analyses of biological time series, as well as the creation of tools and software for scientific research, including the R packages {mctq} and {actverse}.
- Taught courses and co-authored the first Brazilian Actigraphy Consensus, published by the Brazilian Sleep Association.
- Led teams and projects, with a focus on mentoring and training early-career researchers.
Education
Master of Science (MSc), Complex Systems
University of São Paulo (USP)
São Paulo, SP, Brazil
2025 - 2022
- USP is ranked among the top universities in the world (92nd in QS 2025 | 199th in THE 2025).
- Education in complexity science and complex systems modeling, with an emphasis on complex networks and agent-based models.
- Publication of one article and two abstracts presented at scientific symposia.
- Dissertation available at: danielvartan.github.io/mastersthesis
Bachelor of Science (BSc), Marketing
University of São Paulo (USP)
São Paulo, SP, Brazil
2021 - 2016
- USP is ranked among the top universities in the world (92nd in QS 2025 | 199th in THE 2025).
- Education with a quantitative approach and strong foundation in calculus, statistics, and finance. The USP program distinguishes itself by prioritizing analytical rigor and marketing science, in contrast to other undergraduate programs focused solely on communication and creation.
- Class ranking: 23rd out of 66.
- Four completed undergraduate research projects.
Affiliations
Resiclima Network
Researcher
Recife, PE, Brazil
Present - 2024
- Interinstitutional collaboration bringing together researchers dedicated to the study of climate change. Originating from various academic institutions, the network includes participation from Brazilian universities such as UFPE, UFPB, UFMA, UFAL, USP, UnB, UFRN, PUC-Rio, and UFU, as well as international partnerships.
rOpenSci
Software Developer and Maintainer
Berkeley, CA, United States
Present - 2021
- International nonprofit organization that promotes open and reproducible research using the R programming language.
Interdisciplinary Sleep Research Group (GIPSO)
Researcher
São Paulo, SP, Brazil
2022 - 2016
- Research group affiliated with the School of Arts, Sciences and Humanities (EACH) at the University of São Paulo (USP).
Languages
English
Fluent
Fluent
Fluent
Fluent
Portuguese
Fluent
Fluent
Fluent
Fluent
Spanish
Fluent
Fluent
Intermediate
Intermediate
Skills
• Statistical modeling
• Machine learning
• Complex systems modeling
• Agent-based modeling
• Dynamic systems modeling
• Complex network modeling
• Temporal data analysis
• Spatial data analysis
• Software development
• Data engineering
• Data visualization
• Dashboards (with R Shiny)
• Technical and academic writing
• Graphic design
Projects
LogoClim
Creator and Maintainer
N/A
2025
- NetLogo model developed to simulate and visualize climate conditions using data from WorldClim 2.1.
mctq
Creator and Maintainer
N/A
2021
- R package for processing and analyzing the Munich ChronoType Questionnaire (MCTQ).
- Published on The Comprehensive R Archive Network (CRAN) (+10,000 downloads).
- Peer-reviewed by the rOpenSci Initiative.
Main Academic Publications
Actigraphic characterization of sleep and circadian phenotypes of PER3 gene VNTR genotypes
Chronobiology International
N/A
2023
Consenso Brasileiro de Actigrafia
Segmento Farma Editores
N/A
2021
- Consensus on Actigraphy prepared for the Brazilian Sleep Association (book).
Early chronotype with advanced activity rhythms and dim light melatonin onset in a rural population
Journal of Pineal Research
N/A
2020
Organizations
An Introduction to the R Programming Language
School of Public Health at the University of São Paulo (2025)
Agent-Based Modeling Study Group
University of São Paulo (2024)
Introductory Course on Actigraphy
XVIII Brazilian Sleep Congress (2021)
Sleep at EACH
Wellness project focused on creating sleep spaces for students, developed at the School of Arts, Sciences, and Humanities, University of São Paulo (2017).
Courses
Introduction to Agent-Based Modeling
Santa Fe Institute (2024, Complexity Explorer)
São Paulo School of Advanced Science on Ecology of Human Sleep and Biological Rhythms
University of São Paulo (2022)
Circadian Clocks: How Rhythms Structure Life
Ludwig-Maximilians-Universität München (2022, Coursera)
R Programming
Johns Hopkins University (2020, Coursera)
Access and Use of Technical-Scientific Information
University of São Paulo (2013)
Art and Technique of Academic Writing
University of São Paulo (2013)