Freelancer profile translated to English.
Back to original languageAbout Alex
Data Analyst with 6 years of experience, also a senior profile in Mobile Telecommunications (12 years of experience).
I bring a dual skill profile; from Data Analyst serving the business, to a business expert who uses the services of a Data Analyst/Scientist.
This dual posture gives me an advantage in understanding the in-depth needs of clients who use Data Analyst services.
This is reflected in the quality of the analyses I have conducted in recent years and the way I present them.
My strengths are: analytical approach, questioning and proposing, simplification and improvement.
On a technical level, I have a very good knowledge of SQL, an intermediate level in Python, and mastery of the Data Visualization tool: Tableau.
I have worked in the Big Data environment: Dataiku's Data Science Studio (DSS), and also on Microsoft's SQL Server platform.
French
Native or bilingual
English
Fluent
Can work on-site
Bourg-la-Reine (up to 50km), Paris (up to 50km)
Experience
- Bouygues TelecomData Analyst BillingTELECOMMUNICATIONSFebruary 2023 - March 2025 (2 years)Meudon, FranceI joined a billing control team for fiber connection services for clients:- Responsibility for evolutions on automatic controls (in SQL)- Redesign of the SQL model of tables and views to improve the performance of the billing control system:* Time saving: tens of seconds vs 2h* Implementation of historization- Expertise support for Build: continuous improvement of the billing control process
- GIP e-Santé Centre Val de LoireData Analyst ExpertPUBLIC SECTORNovember 2022 - February 2023 (3 months)Olivet, FranceExpertise for anomaly resolution on repositories- Interviews with clients regarding the context- Familiarization with the technical environment (e-Health tools)- Data collection and cleaning (Power Query and M Language)- Overall assessment of the issue- Reverse engineering and identification of unknown business rules.Familiarization with SQL DB- Client support on manipulation (MySQL)- Visual restitution of the Physical Data Model- Creation of SQL procedures to facilitate client use.Tools: e-Health tools, Power Query, M Language, MySQL
- Bouygues TelecomTelecom Data AnalystTELECOMMUNICATIONSNovember 2018 - October 2022 (3 years and 11 months)Meudon, FranceData Visualization on mobile network activity:- Data extraction and database structuring- Automation of processes and business rules- Design, evolution, and production of dashboards- Interface with IT for database management tools.Reference for prediction methods on 4G and 5G mobile networks- 6-year predictions for the entire mobile network- Routines for checking data quality and completeness.Studies and analyses of mobile network KPIs- Search for correlations between network optimizations and customer behavior- Analysis of the impacts of technical decisions made by the business- Providing decision-making elements regarding specific network phenomena.Tools: Dataiku, Microsoft SQL Server, Tableau Desktop, Tableau Server Languages: SQL, Impala SQL, HiveQL, Python, R
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Education
- Engineering Degree, TelecommunicationsEPF Engineering School2012Diplôme d'ingénieur, Télécommunications
- Semester of study, Networks and TelecommunicationsUniversity of Montreal - Polytechnique Montreal School2012Semestre d'études, Réseaux et Télécommunications