SBFreelancer profile translated to English.
Back to original languageAbout Sofien
I design and deployrobust and scalable data systems**, leveraging a dual expertise in **Software Engineering(Python, Django) andData Engineering(GCP, BigQuery, Airbyte, dbt...).
I undertake high-impact missions:
Beyond the technical aspects, what motivates me is solving problems that directly affect users. Finally, I am convinced that the best solutions arise from collaboration and sharing, which is whyI am also involved as a trainer, teacher, and mentor.
French
Native or bilingual
English
Fluent
Spanish
Conversational
Remote only
Primarily works remotely
Experience
- BotifyStaff Software & Data EngineerFebruary 2020 - Today (6 years and 4 months)Paris, France
- Improvement and maintenance of an internal DSL (BQL) for efficient extraction of large volumes of SEO data with high flexibility.
- Development, security, and evolution of the API (Django | Django REST Framework).
- Optimization of performance and costs related to queries and storage on BigQuery and Cloud Storage, resulting in a 30% cost reduction in 2025.
- Design, implementation, and deployment of distributed workflows to ingest and process data from internal crawlers or third-party sources.
- Industrialization of machine learning pipelines, particularly for generating and integrating millions of relevant links on e-commerce sites.
- Data analysis to refine the understanding of user behavior, crawlers, and the impact of site structure on SEO.
- Technical project management, from initial investigation to post-production monitoring.
- Key role in incident management, acting as investigator or incident commander.
- Daily code review, with over 2000 pull requests approved.
- Mentoring of junior and senior engineers.
- Conducting nearly 50 code, architecture, and data analysis interviews.
- Human CodersTrainer - Google BigQueryMarch 2025 - Today (1 year and 3 months)Corporate training on managing, processing, and analyzing data with BigQuery.Training programs:
- https://www.humancoders.com/formations/bigquery
- https://www.humancoders.com/formations/bigquery-avance
- Agence Nationale de la Sécurité des Systèmes d'Information (ANSSI)Data AnalystJuly 2019 - December 2019 (5 months)Paris, France
- Development of a data collection API.
- Definition, calculation, and visualization of data quality metrics.
- Creation of an interactive dashboard in the form of a web application.
- Development of a data profiling tool focused on quality.
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Education
- Professional Master's degree in Computer EngineeringPolytechnique Montréal2019Génie logiciel • Conception de sites web • Analyse d’algorithmes • Optimisation combinatoire Intelligence des données • Fouille et visualisation de données • Systèmes de recommandation • IA Sécurité • Sécurité Informatique • Investigation numérique
- Civil Engineer Diploma - Information & SystemsÉcole Nationale Supérieure des Mines de Nancy (ENSMN)2018Génie logiciel • Systèmes d’exploitation • Ingénierie logicielle • Réseaux • UML Manipulation de données • Bases de données • Analyse de données • Journalisme de données Projet : Site web adapté à l’apprentissage des enfants autistes avec système de recommandation.
Certifications
- Professional Data EngineerGoogle Cloud2025
- DELE C1Instituto Cervantes2018