John James Tello Cajiao

Experience

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  Universidade Estadual de Campinas

  Jun 2015 - Dec 2018

  Teaching asssistant

  TA in the courses: Laboratory of fundamental physics, Quantum Mechanics and Electromagnetism. Preparing and grading lessons and tests for undergraduate and master students.Tasks- Checked assignments, proctored tests, and provided grades according to university standards.- Prepared lessons and lab experiences for small groups of students.- Taught small groups of students focused on specific parts of coursework.- Implemented practice exercises and group assignments to assist students in quick information grasping. Show less

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  Freelance

  Feb 2020 - Dec 2020

  Back End Developer

  Project: Real Estate Accounting Django AppA client upgrading their business operations needed to automate administrative and accounting tasks for their real estate company. - Collaborated with a client to automate administrative and accounting tasks for their real estate company.- Led a full database redesign and implemented a Django backend.- Developed features for employee authentication, automatic document generation, and realty status tracking.- Utilized Bash/Shell scripting, Python, and GitHub for task automation and workflow management.- Optimized database queries by implementing custom SQL logic and adhering to Django best practices. Show less

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  University of Pennsylvania

  Jan 2021 - Jul 2023

  Data Research Analyst

  Tasks- Performed analysis and integration of complex datasets from multiple sources, types, and sizes.- Collaborated with multidisciplinary team members to accomplish project goals.- Presented results to non-specialized audiences using visualization tools and dashboards.- Contributed to and actively participated in project conception, design, and execution.Projects: Childhood Obesity Atlas using non-structured massive datasets. This project was aimed at uncovering the genetic landscape of the immune system in obese children.- Analyzed large datasets (lean vs obese individuals) using classification, regression, and clustering techniques.- Leveraged tech stack: Python (PyTorch, Pandas, Scikit-learn, Numpy), R, and bash/shell scripting.- Applied advanced ML methods including variational Bayesian analysis, Markov Graph diffusion, dimensional reduction.- Ensured reproducibility through automation (bash/shell scripting, Snakemake, GitHub).- Achieved research funding and recognition as a PEW Latin American Fellow in 2022.Project: Understanding the organization of DNA through big dataThis project was aimed at understanding the relationship between the organization of the DNA and its associated cell functions.- Analyzed large datasets to understand the relationship between DNA organization and cell functions.- Utilized a tech stack that includes Python, R, and bash/shell scripting for ETL setup.- Employed advanced statistical and ML techniques to process DNA feature data.- Created custom data pipelines using PyTorch, Scikit-learn, Pandas, Numpy, and Anndata.- Ensured reproducibility through GitHub and the Snakemake workflow system, leading to a publication in the prestigious journal Nature. Show less

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  TheMadFox

  Apr 2024 - now

  Python Developer