Christelle Levy

LeadYou Project Optimization of sports performance, health, and engagement for professional and amateur athletes. - Back-end: Designed the architecture and data flows (ETL) between client APIs, Google API, AWS, and a PostgreSQL database using the Kestra orchestrator. - Amazon Web Services: Utilized various services such as EC2, RDS, DynamoDB, S3, Secret Manager, IAM, and more. - REST API: Developed CRUD APIs and AWS Lambda functions, orchestrated via Terraform for automated infrastructure management. - Data Visualization: Created dashboards and charts on Superset. Aggregated data into materialized views using PostgreSQL.

Agir Pour l'École Project Speech recognition project designed to facilitate reading learning for children. - Machine Learning/Deep Learning: Trained a deep learning model for speech recognition using NVIDIA NeMo's STT+Conformer, adapted for detecting reading errors. Conducted in-depth result analysis and visualization to refine model performance. - Back-end: Optimized and maintained data pipelines in Python and Pandas, using Airflow as a bridge between DynamoDB and PostgreSQL. - REST API: Developed APIs and AWS Lambda functions, orchestrated via Terraform for automated infrastructure management. - Data Visualization: Maintained dashboards and charts on Superset. - Networking: Set up a lightweight server via Tailscale, enabling secure SSH connections to a WSL terminal on a Windows PC.

Research Project Testing New Physics Theories for Astrophysics Research - Data Processing: Harmonized and cleaned data from different experiments (H.E.S.S., MAGIC, VERITAS) to ensure a consistent and unified analysis. - Data Analysis: Developed and standardized an analysis software in C++ and Python, including simulations, calibration, optimization, and visualization. - Modeling: Simulated astrophysical object characteristics and predicted their temporal evolution. - Teamwork: Member of an international collaboration and an inter-experiment consortium. Operated telescopes and performed data verification on-site at H.E.S.S. in Namibia. - Dissemination: Authored scientific articles, delivered presentations at conferences and seminars, and taught in higher education. - Open-Source Transition: Rewrote software for optimization and migration to an open-source format, including documentation and tutorials.

I got familiar with the process of data reduction to produce images from raw interferometric data. I studied the jet kinematics of Seyfert 1 3C111 from KVN (Korean VLBI Network) data, and created a short movie from 15 reconstructed images showing its evolution over time.

I worked on the GBAR experiment that aimed to measure the Earth attraction on an antihydrogen atom. I helped with the calibration of a positron beam (flux and energy dispersion) after the replacement of a key component.