Open to opportunities

Jean-Michel LIEVIN

@jean-michellievin

Message

I am a data scientist and full-stack developer with backend expertise.

France

Message

What I'm looking for

I seek a meaningful role combining data science and backend development to solve retail and operational challenges, ideally full or partial remote, with technical ownership and measurable impact.

I am a data scientist and full‑stack developer with over 10 years of hands‑on development experience and a strong back‑end focus, combined with 8 years of practical exposure to retail operations and business constraints.

I have driven measurable improvements in production systems — optimizing campsite management to increase operational efficiency by 50%, correcting and enhancing websites to reduce critical errors by 40% and improve loading performance by 25%, and developing SaaS and web services across multiple companies.

I built industrialized data retrieval and integration pipelines using Pandas, NumPy and scikit‑learn, and applied machine learning models (regression and time series) obtaining near 80% R2 on a sales price prediction project. I hold DataScientest / Mines ParisTech training in data science and an AWS Certified Solutions Architect Associate certification.

I bring a pragmatic blend of backend engineering, cloud architecture, and applied data science to solve real business problems. I am autonomous, versatile and results‑driven, and I seek meaningful roles where I can deliver operational impact, ideally with full or partial remote work.

Experience

Work history, roles, and key accomplishments

Full-stack Web Developer

European Camping Group

Jul 2017 - Apr 2024 (6 years 9 months)

Optimized campsite management, increasing operational efficiency by 50%, and corrected/enhanced websites, reducing critical errors by 40% and improving load performance by 25%.

PHP NodeJS Vue Nuxt MySQL PostgreSQL REST APIs

Web Developer

N-Gine Innovation

Jun 2016 - May 2017 (11 months)

Developed web services and SaaS solutions, configured servers and managed databases to support product deployments and maintain uptime.

Symfony Twig PHP MySQL SaaS Git REST

Banking Operations Technician

Banque Populaire

Feb 2015 - May 2015 (3 months)

Configured and automated document processing workflows (generation, printing, multichannel distribution) to streamline banking operations and reduce manual tasks.

Document Automation APIs MySQL MariaDB PostgreSQL SOAP REST

Back-end Web Developer

Various Companies

Jan 2013 - Feb 2015 (2 years 1 month)

Delivered back-end solutions and automations for clients, improving vehicle tracking systems and automating WordPress workflows to increase operational efficiency.

PHP APIs WordPress SQL Automation)Git SEO Optimization Backend Development

Sales Advisor

Carrefour

Jun 2005 - Jun 2013 (8 years)

Managed inventory, orders and promotional operations, supervised seasonal teams and conducted stocktaking while leading a project to analyze and predict real estate prices across regions.

Inventory Management Data Analysis Market Research Reporting

Education

Degrees, certifications, and relevant coursework

IESA Multimédia

Multimedia Project Manager (RNCP), Multimedia

2016 - 2017

Completed Multimedia Project Manager (RNCP NSF 320p-326p) program at IESA Multimédia from 2016 to 2017 focusing on multimedia project coordination.

Amazon Web Services

AWS Certified Solutions Architect - Associate, Cloud Architecture

2024 -

Completed AWS Certified Solutions Architect - Associate (SAA-S03) certification in 2024 covering cloud architecture, security, and cost optimization.

DataScientest / Mines ParisTech

Data Scientist (RNCP38587 - Bloc 3), Data Science

2025 -

Completed Data Scientist (RNCP38587 - Bloc 3) training at DataScientest / Mines ParisTech in 2025 with a focus on Python, SQL, and machine learning frameworks such as TensorFlow and Scikit-Learn.

Castel Bourgogne

Language Software Developer (RNCP), Software Development

2012 - 2013

Completed Language Software Developer (RNCP NSF 326 t) program at Castel Bourgogne in Dijon from 2012 to 2013 focusing on software development and language tools.