top of page
JonathanBossio.png

About me

As a seasoned data scientist with a rich background in physics research, I bring a unique blend of analytical expertise and leadership skills to the table. With over 9 years of experience, my journey spans from being a researcher at CERN to my current  data scientist role at HP.

Over these years, I developed a strong proficiency in analyzing large datasets using statistical tools and developing machine learning solutions. I excel at leading teams,  eliciting requirements, prioritizing tasks and proposing data-driven solutions.

 

Additionally, I have a solid background in software development, having developed, maintained, and tested software solutions throughout my career.

​

My background in physics has also equipped me with the skills to formulate hypotheses and design experiments, which I leverage as a data scientist.

Languages

English

Spanish

Fluent

Native

Italian

B1

Location

Barcelona, Spain

Education

PhD in Physics

MSc in Physics

  • LinkedIn
  • GitHub

Experience

HP_logo.png

Data Scientist @ HP

Since September 2024

  • End-to-end development of Machine Learning solutions to improve sales across different business units

  • Extraction of data-driven insights enabling decision making

  • Identification of business needs and stakeholder management

  • As a member of the Data Science for Guided Selling team, I actively participate in the interview process for new candidates, contributing to the selection of talented professionals who align with our team's goals

CERN logo

Senior Research Fellow @ CERN

April 2021 - April 2023

Member of the ATLAS Collaboration

  • Coordinated a team of data scientists and physicists (30 people) [April 2022 - April 2023]:

    • ​Successfully managed 7 deliverables simultaneously

      • Released data-driven recommendations to teams of data scientists

    • ​Planned and prioritized tasks in JIRA
    • Monitored the progress of the tasks

    • Flagged potential problems and proposed solutions

    • Provided technical guidance on Python, C++ and statistics

    • Organized and facilitated weekly meetings

    • Reported regularly to group coordinators

    • Managed people remotely

    • Assigned roles and responsibilities

    • Maintained documentation

    • Ensured transfer of knowledge

    • Analyzed data to extract data-driven corrections

    • Streamlined a process to efficiently delete deprecated data

  • Developed software (Python/C++):

    • Led the development of a new release of a tool designed to clean large datasets and extract relevant information. This tool was successfully used to promptly inspect data from the 2022 ATLAS operations.

    • Developed tests using continuous integration (CI) for early detection of issues and bugs

  • Developed 2 solutions based on machine learning (deep learning):

    • Implemented and deployed a neural network to predict the position of a particle in a detector. Improved previous estimation by up to 60%. [using NumPy, Pandas and Keras]

    • Trained and optimized a model to identify physical particles. Improved performance by up to 50%. [Docker, Kubernetes and Kubeflow pipelines]

  • Led 2 teams (5-7 people each) using statistical tools for data analysis:

    • Supervised data analyzers and ensured high-quality software and measurements

    • Preprocessed and cleaned large datasets to extract relevant information

    • Performed precision measurements of physical quantities and estimated uncertainties

    • Performed a maximum likelihood estimation to find the parameters of a data-driven statistical model

  • Monitored storage space and enhanced documentation on storage and computing resources for the CERN ATLAS Team

  • Organized 3 sessions in an internal (ATLAS only) workshop [44 participants]:

    • Planned scope and content of sessions and selected speakers

  • Chaired an Editorial Board:

    • Reviewed the scope, strategy and results of a data analysis

    • Identified problems and proposed solutions

McGill logo

Research Associate @ McGill University

December 2018 - April 2021

Member of the ATLAS Collaboration

  • Coordinated a team of software developers and physicists (18 people) [June 2019 - June 2021]:

    • Successfully drove the development of a real-time data-driven decision-making software deployed in the ATLAS operations in 2022

    • Elicited requirements and understood the needs of data scientists

    • Defined the strategy of the group and provided estimates of required effort

    • Planned, prioritized and monitored tasks and bugs in JIRA

    • Ensured successful delivery of projects within scope and timeline

    • Monitored the development process to ensure requirements and quality standards were met

    • Managed people remotely

    • Managed and resolved dependencies with other teams

    • Developed, optimized and validated software algorithms and monitored their performance

    • Organized and facilitated weekly meetings

    • Reported software readiness, quality and performance to group coordinators

    • Flagged potential problems and proposed solutions

    • Developed tools for data cleaning, processing and monitoring

    • Developed tools used to identify patterns in data

  • Led 2 teams (5-7 people each) using statistical tools for data analysis:

    • Supervised data analyzers and ensured high-quality software and measurements

    • Preprocessed and cleaned large datasets to extract relevant information

    • Performed precision measurements of physical quantities and estimated uncertainties

    • Performed a chi-square goodness of fit test for hypothesis testing

  • Member of an Editorial Board:

    • Reviewed the scope, strategy and results of a data analysis

    • Identified problems and proposed solutions

    • Approved and drove publication of scientific results: ATLAS-CONF-2020-022.pdf

  • Successfully edited and published scientific results: The European Physical Journal C volume 81

UBA logo

PhD candidate / PhD @ University of Buenos Aires (UBA)

Member of the ATLAS Collaboration

April 2014 - December 2018

  • Liaison between a performance group and a physics group [duration: 2 years]

    • Ensured smooth communication and collected user feedback

  • Led 2 teams (5-7 people each) conducting data and performance analyses:

    • Successfully produced and published scientific results: Journal of High Energy Physics 2018

    • Monitored data analysis processes and ensured high-quality software and measurements

    • Analyzed experimental data to extract physical quantities and validate simulation results

    • Preprocessed and cleaned large datasets to extract relevant information

    • Derived data-driven corrections and estimated uncertainties

    • Performed a test statistic based on a profile likelihood ratio for hypothesis testing

  • Developed and maintained software used by hundreds of users to apply corrections:

    • Collected user feedback and provided user support

  • Taught undergraduate biophysics courses

  • Contributed to 3 scientific publications by doing data analyses:
Pierre Auger Observatory logo

MSc candidate @ Pierre Auger Observatory

April 2012 - April 2014

  • Developed a simulation of a Surface Detector and studied its response under various scenarios

  • Developed and maintained a calibration mechanism for the AMIGA muon detectors

Technical skills

Software development and Data Science:

  • Python for data manipulation (PySpark, Pandas and NumPy), data visualization (matplotlib, Plotly and seaborn), automated testing (Pytest) and machine learning and statistical methods (SciPy, statsmodel, Keras from tensorflow, Scikit-learn)

  • Business Intelligence / Analytics tools: Tableau and Looker Studio

  • C++

  • Git [GitLab and GitHub] and Continuous Integration

  • Docker

  • Kubernetes [Kubeflow]

  • SQL

  • Jupyter notebook

Software:

  • JIRA

  • Visual Studio Code, Vim

  • Microsoft Excel/PowerPoint and Google Sheets/Slides

Website analytics and user behaviour:

  • Google Analytics

  • Google Search Console

Operating systems:

  • Linux and Windows

Volunteering and outreach activities

ATLAS International MasterClasses

The ATLAS International Masterclasses are one day-long program for high-school students to provide them hands-on experience in particle physics.

Moderator in 3 video conferences at CERN 

March 2019

The purpose was to interact with up to 5 groups of students (aged 16-19) from different schools around the globe. Each video conference contained:

  • Presentation of the results from the measurement performed by the students using ATLAS data

  • Discussion of the presented results

  • Session of Q&A (questions and answers about particle physics, life at CERN, etc)

  • Fun Quiz

Supervisor during hands-on experience

May 2018 and April 2017

Supervision of high-school students during the hands-on experience in the course of the ATLAS International MasterClasses taking place at University of Buenos Aires.

September 2013

Vocational guidance talk

Vocational guidance talk for high-school students at Colegio San Esteban in San Carlos de Bariloche, Argentina.

Talks 

  • 8 talks given at national or international physics conferences

  • Participated in several internal (ATLAS-only) workshops and meetings by organizing and chairing sessions, and giving talks.​

Hobbies

In my free time, I like taking on challenging board games, puzzles and video games. For example, I love playing strategy board games [1] such as "Terraforming Mars" and "Dune Imperium". Additionally, I enjoy playing escape room games [2]. ​Furthermore, I like trying new cooking recipes, watching TV series and movies, travelling and exploring new cities and places. ​[1] A strategy game is a game in which the players' decision-making skills have a high significance in determining the outcome. Strategy games often require decision tree analysis, or probabilistic estimation in the case of games with chance elements [source: wikipedia.org]. [2] An escape room is a game in which a team of players discover clues, solve puzzles, and accomplish tasks in one or more rooms in order to accomplish a specific goal in a limited amount of time. The goal is often to escape from the site of the game. Most escape games are cooperative but competitive variants exist [source: wikipedia.org].

© 2025 Jonathan David Bossio Sola

  • Linkedin
  • GitHub
bottom of page