I'm a data scientist with 2+ years of experience building and deploying production ML systems for retail and e-commerce, with a focus on demand forecasting, promotion analytics, and large-scale data processing using PySpark. I'm fully open to relocation to Europe and eligible for work visa sponsorship.

Lilya Yahiaoui

I'm a data scientist with 2+ years of experience building and deploying production ML systems for retail and e-commerce, with a focus on demand forecasting, promotion analytics, and large-scale data processing using PySpark. I'm fully open to relocation to Europe and eligible for work visa sponsorship.

Available to hire

I’m a data scientist with 2+ years of experience building and deploying production ML systems for retail and e-commerce, with a focus on demand forecasting, promotion analytics, and large-scale data processing using PySpark.
I’m fully open to relocation to Europe and eligible for work visa sponsorship.

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Experience Level

Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
Beginner
Beginner
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Language

Arabic
Fluent
English
Advanced
French
Fluent
German
Beginner

Work Experience

Data Scientist at Squared X - Remote
July 1, 2024 - Present
Developed and deployed 900+ SKU-level forecasting models trained in parallel, enabling scalable demand forecasting across large retail assortments. Designed automated retraining pipelines with drift monitoring to maintain model performance across dynamic retail environments. Implemented PACF-based lag selection to identify statistically significant autoregressive terms per SKU, enabling data-driven feature construction for demand forecasting. Contributed to promotion baseline estimation and pull-forward effect approximation, helping retail clients better isolate true promotions. Developed a multi-class product classification model for fashion retail, accurately categorizing clothing items across 75+ classes. Technologies: PySpark, MLflow, Pandas, FFT-based features, Databricks.
Data Scientist at Beauty Quick - Remote
May 1, 2023 - June 1, 2024
Enhanced search engine v2.0 with improved precision and intelligent product recommendations for out-of-stock items, reducing customer bounce rates. Designed and refined product taxonomy for fragrance and makeup categories, improving product discoverability and search structure. Collaborated closely with engineering and product teams to deploy AI features into production environments.
Data Scientist at Beauty Quick - Remote
February 1, 2023 - April 1, 2023
Data Scientist Intern: Performed iterative testing, debugging, and prompt optimization to improve chatbot response quality and user interaction reliability. Built and integrated an LLM-powered chatbot recommender using LangChain and FAISS for semantic search and conversational recommendations.
Data Scientist Intern at Ministry of Higher Education and Scientific Research - Algiers, Algeria
February 1, 2022 - September 1, 2022
Developed a decision-support system to guide bachelor holders in choosing their major at the university.

Education

Master of Science in Intelligent Computer Systems at University of Science and Technology Houari Boumediene
January 1, 2020 - January 1, 2022
Bachelor of Science in Information Systems and Software Engineering at University of Science and Technology Houari Boumediene
January 1, 2017 - January 1, 2020

Qualifications

Databricks Certified Machine Learning Associate
January 11, 2030 - March 13, 2026
Generative AI with Large Language Models, Coursera
January 11, 2030 - March 13, 2026
Fine-tuned LLM using instructions, PEFT and RLHF
January 11, 2030 - March 13, 2026
AWS Cloud Specialization (Practical Data Science on AWS)
January 11, 2030 - March 13, 2026

Industry Experience

Retail, Software & Internet, Professional Services

Experience Level

Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Beginner
Beginner
Beginner
See more