I am a Senior Data Scientist & Backend Engineer with 6 years of freelance experience, specializing in Python, Data Engineering, Machine Learning, and backend architecture. I design scalable APIs and data pipelines, deploy robust data-driven solutions on AWS, and I’m passionate about performance optimization and building reliable systems.

Jean Savary

I am a Senior Data Scientist & Backend Engineer with 6 years of freelance experience, specializing in Python, Data Engineering, Machine Learning, and backend architecture. I design scalable APIs and data pipelines, deploy robust data-driven solutions on AWS, and I’m passionate about performance optimization and building reliable systems.

Available to hire

I am a Senior Data Scientist & Backend Engineer with 6 years of freelance experience, specializing in Python, Data Engineering, Machine Learning, and backend architecture.
I design scalable APIs and data pipelines, deploy robust data-driven solutions on AWS, and I’m passionate about performance optimization and building reliable systems.

See more

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
See more

Language

French
Fluent
English
Fluent
Spanish; Castilian
Advanced

Work Experience

Co-founder & CTO at HoptyCV
May 1, 2025 - Present
AI platform automating skill dossiers for ESNs, HR firms, and staffing agencies. Responsible for technical leadership, product strategy, and architecture and deployment of AI-powered solutions.
CTO at Seeqle.com
April 1, 2024 - December 1, 2024
Led technical and data teams, designed analytics API, contributed to product strategy and market positioning.
Team Lead Data Science & Backend at Diagoriente
December 1, 2022 - September 1, 2024
Managed a team of data scientists, focused on backend architecture and migration to microservices, and contributed to product strategy.
Backend Developer at MARBL
July 1, 2021 - October 1, 2022
Contributed to the backend development and architecture for a wealth management advisory application.
Data Scientist / Engineer at Startup
January 1, 2021 - March 1, 2022
Developed customer database synchronization platform with focus on ETL pipelines, APIs, and machine learning algorithms.
Data Science Instructor at Le Wagon
June 1, 2021 - December 1, 2021
Lead instructor for Data Science bootcamps, delivering specialized workshops.
Data Analyst Operations at MoovOne (by CoachHub)
September 1, 2021 - November 1, 2021
Developed sales operations reporting and dashboards using advanced SQL.
CTO at Bouge
June 1, 2020 - March 1, 2021
Defined product strategy and technical stack while leading recruitment for Data and Backend teams.
Data Scientist & Backend Developer at Innov‑Training
July 1, 2020 - December 1, 2020
Conducted R&D on athlete physiological analysis and developed machine learning detection algorithms.
Data Scientist at Evaneos
September 1, 2018 - March 1, 2020
Conducted analysis for a B2C2B travel e-commerce platform, focusing on NLP and predictive modeling.
Co-founder & Lead Data Engineer at HoptyCV
April 1, 2025 - Present
Remote development of an AI-powered platform for automated skills portfolio generation. Built FastAPI backend architecture with AI agents for CV parsing, skills extraction and scoring; developed robust ETL pipelines for large-scale profile data processing and enrichment; created dynamic templates with PDF generation and job-offer adaptation; integrated LLMs (OpenAI, Perplexity) for semantic analysis and skills matching; implemented asynchronous task orchestration for batch CV processing.
Co-founder & Backend Engineer at Reevu
September 1, 2024 - March 1, 2025
Remote backend design and development for a YouTube creator CRM and video analytics platform. Implemented ETL for real-time YouTube data ingestion, ML models for sentiment analysis on comments, optimized PostgreSQL storage and queries, NLP pipeline with vectorization and clustering for audience segmentation, and webhook-based alerting.
Chief Technology Officer (CTO) at Seeqle.com
April 1, 2024 - December 31, 2024
Overhauled backend infrastructure and microservices, designed optimized persona database, and built Airflow pipelines for CV parsing and ML-based skills scoring via LLM. Managed cloud infra (Railway & AWS) and led Backend and Data teams with architecture reviews and performance improvements.
Data Scientist & Backend Engineer at Animaj
March 1, 2024 - June 30, 2024
Freelance project for automatic episode detection on large-scale video data. Implemented video processing (PyTube, OpenCV), custom embeddings for content recognition, distributed storage on AWS S3 and ChromaDB, and scoring for episode classification; deployed and orchestrated on AWS EC2.
Team Leader | Data Science & Backend at Diagoriente
December 1, 2022 - September 30, 2024
Led a team of 4 data scientists/engineers on backend Python and ML projects; designed microservices using FastAPI and Django; built a graph database (ArangoDB) for professional skills and a REST API for a ML-based recommendation engine.
Backend Engineer at MARBL
July 1, 2021 - October 31, 2022
Backend engineering focused on scalable services and data pipelines.
Lead Teacher Data Science at Le Wagon
June 1, 2021 - December 31, 2021
Led data science curriculum delivery and project mentoring.
Data Engineer at Stealth
January 1, 2021 - March 31, 2022
Data engineering role focusing on ETL pipelines and data workflows.
Data Scientist & Backend Engineer at Innov- Training
July 1, 2020 - December 31, 2020
ML/Backend projects and analytics.
Data Analyst Operations at MoovOne
September 1, 2021 - November 30, 2021
Data analytics and operations support.

Education

Generalist Engineering Degree at IMT Atlantique
January 1, 2017 - January 1, 2020
Master of Science at Université de Montréal – École Polytechnique de Montréal
January 1, 2018 - January 1, 2018
Engineering Degree - Computer Science & Digital Technologies at IMT Atlantique
January 1, 2017 - January 1, 2020
Master of Science - Computer Science at École Polytechnique de Montréal
January 1, 2018 - January 1, 2018

Qualifications

Add your qualifications or awards here.

Industry Experience

Professional Services, Software & Internet, Media & Entertainment, Other

Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
See more

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