Rayane Declercq

Analytics Engineer · Data Analyst · Applied AI

Salary / Daily rate

Paris, France

Freelance

Can come onsite

Skills

PythonGoogle Cloud PlatformPostgreSQLPower BIData EngineeringData AnalysisNumPyData VisualizationETLBig DataAIData MiningAzureSQL databasesSQL QueriesAWSGoogle BigQueryMicrosoft SQL ServerAmazon RedshiftTech LeadData EngineerCRMGoogle AnalyticsLookerNotionSQLitedbtTableauData AnalystHubspotMySQLAI Engineer

Languages

English

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

Links

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

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