
Rayane Declercq
Analytics Engineer · Data Analyst · Applied AI
Salary / Daily rate
Paris, France
Freelance
Can come onsite
Skills
Languages
About me
Intro
Freelance Analytics Engineer / Data Analyst in Paris, remote or onsite, FR/EN. Stack: SQL, BigQuery, dbt, Python, GCP, Power BI, Airflow. I help clients see clearly through their data: reliable foundations, readable reporting, and AI use cases with measured ROI. Current and recent work: - Richemont (Client Marketing): retail incentive compensation models, SQL on GCP. - Smallable (e-commerce): dynamic markdown pricing, +10% margin vs N-1. Manaray brand: manaray.fr
Work experience
Client Data Analyst · Analytics Engineering
RichemontFreelance
May 2025 - Present
1 year 6 months
Paris, France
Within Richemont's Client Marketing team (luxury: jewellery, watches, fashion), I contribute to redesigning retail incentive compensation models supporting the Luxury New Retail strategy and the adoption of clienteling tools in boutiques. In practice: gathering requirements from the Group and the Maisons, modelling incentive schemes in SQL on Google Cloud Platform, dashboarding for clear restitution, supporting adoption with retail teams, product documentation and industrialization following the Client Data as a Service philosophy. Freelance mission, international scope.
Senior Data Analyst
Smallable
Jan 2024 - Present
2 years 10 months
Paris, France
At Smallable, I developed dynamic discount algorithms that adjusted prices based on stock turnover rates and price sensitivity, leading to a +10% margin increase compared to the previous year. I also built a brand scoring system factoring in profitability, stock levels, and purchase frequency, which helped prioritize strategic partnerships and optimize supplier negotiations. Additionally, I orchestrated Python-based workflows with Airflow, automating 80% of SQL/API data flows. This significantly reduced manual work, enabling deeper analytics and faster reaction to market trends. Tools : Tableau, Data Studio, Python, Airflow, SQL, APIs
Elevate | Agence Data & Technologies Marketing
Feb 2022 - Dec 2023
1 year 11 months
Paris, France
Guerlain | Chef de projet BI
May 2023 - Dec 2023
8 months
Paris, France
At Guerlain, I contributed to the design and organization of a new BI application focused on CRM. I helped with the migration of analytics to a GCP architecture, and was involved in gathering requirements, application design, dashboards building and user testing. Additionally, I helped in project planning and suggested data storytelling techniques for a more comprehensive customer view. I also shared best practices for building and using Power BI dashboards.
Senior Data Analyst
Feb 2022 - Dec 2023
1 year 11 months
Paris et périphérie · Hybrid
In addition to my internal responsibilities, I participated in the agency's business development by responding to commercial briefs and client calls. Played a part in recruiting and onboarding 10+ new consultants by implementing a recruitment process using technical tests. As a mentor to young consultants, I provided guidance on data-related issues and helped them develop their skills.
Withings | Data Analyst
Jan 2023 - Mar 2023
3 months
92130 Issy-les-Moulineaux, France
Worked on the review for the company's new web tracking tool on its e-commerce site. Additionally, I mentored a Data Analyst to help her provide relevant e-commerce analyses for the client. Finally, my mission was to establish clear documentation to help new data analysts to maximize their utilization of the tools available.
Chanel | Data Analyst
Feb 2022 - Dec 2022
11 months
Paris, France
As a member of the Client Data Team within the Digital & Innovation Services department, I actively participate in the development of customer knowledge in the areas of Digital, E-Business, and Retail. My role involves facilitating the understanding and management of CRM issues across the Fashion, Fragrances & Beauty, and Watch & Fine Jewelry divisions.
Mytraffic
Sep 2020 - Mar 2022
1 year 7 months
Paris, France
Data Acquisition Manager
Sep 2020 - Mar 2022
1 year 7 months
Paris, France
As the responsible for completing the commercial asset base for the Mytraffic product, I oversaw a team of 20 offshore workers who produced over 4000 high-quality assets across multiple European countries (including the UK, Spain, Germany, and Italy). By developing an algorithm in Python and Postgis to identify commercial areas based on their intensity in peri-urban zones, I helped Mytraffic gain a competitive edge in the market. To provide even greater value to Mytraffic clients, I spearheaded efforts to source critical data, creating and managing regular data scrapping processes to update the database of brands, socio-demographics, and products. These additions enabled us to provide even more accurate and impactful analyses, positioning Mytraffic as a leading provider of data-driven insights. As part of my commitment to continuous improvement, I also played a key role in various R&D initiatives aimed at enhancing the quality of data provided by Mytraffic analyses. This work helped to solidify our reputation as a trusted and innovative partner for businesses seeking to make data-driven decisions.
Growth Data Analyst
Sep 2020 - Dec 2020
4 months
Paris, France
During my role as a Growth Data Analyst, I participated in the update of the lead generation pipeline by integrating various services such as ColdCRM and Hunter. This integration helped to increase the total number of qualified leads for the Sales team by 20%. By leveraging my Python development skills, I also created a web scraper to source additional leads from various industry websites. As a result, we were able to expand our reach and generate more opportunities for business growth.
L'Oréal
Nov 2018 - May 2020
1 year 7 months
Région de Paris, France
Junior Data Specialist | Project Manager
Sep 2019 - May 2020
9 months
Région de Paris, France
Building a data warehouse solution for data analysis and reporting needs. Development of data integration environments and pipelines through Google Cloud Platform (GCP) managed services
Data Analyst
Nov 2018 - Oct 2019
1 year
Clichy, France
Enhancing the value of data through developments & improvements of new PowerBI dashboards for the L'Oréal marketing teams Business support for the validation of the algorithm results through the analysis of SSAS cubes, error logs & various Data Science processes applications developed in Python Follow-up, relaunch & improvements of data processes within the L'Oréal DataPlatform (BI and Big Data) via the following tools: Informatica, Big Data Manager, and Microsoft SSAS Contributed to the evolution of a fraud detection algorithm developed in Python
Data Analyst
Saint-Gobain Distribution Bâtiment France
Oct 2017 - May 2018
8 months
Région de Paris, France
Internship in SGDBF internal studies: Data analysis and detailed reporting (by activity, statistical region, agencies) via datamining tools (R, SPSS, BI solutions) - Queries, analysis of multi-brand marketing databases (SQL, Excel) - Participates in the development and implementation of the Saint-Gobain Intranet, allowing communication, distribution of work & deliveries with the group
HR Rewards Assistant
L'Oréal
Mar 2016 - Jul 2016
5 months
Clichy, France
Skills: Microsoft Office
Education
NEOMA Business School
MS Marketing & Data Analytics
2018 - 2019
1 year 1 month
University of Paris I: Panthéon-Sorbonne
Master
2016 - 2018
2 years 1 month
Université Paris-Est Marne-la-Vallée
Licence
2013 - 2016
3 years 1 month