Freelancer profile translated to English.
Back to original languageAbout Alexandre
Looking for a data engineer?
You are in the right place.
I am a data engineer with over 5 years of experience.
I have worked in various sectors such as healthcare, logistics, corporate catering, retail, and telecommunications.
I have collaborated with companies such as Doctolib, Foodles, Le Hibou, Needl, Exfo.
I am certified in Snowflake and Spark.
I can assist you with:
- Design, modeling, and migration of your data/cloud platform
- Development and industrialization of data processing pipelines
- Automation of your data processes / DataOps: Python, git, Github Actions, CI/CD
- Data collection and transformation
- Development of your Spark applications for large-scale distributed data processing
- Contribution to CI/CD improvement
- Maintenance of your data stack and applications
- Data modeling
- Deployment of your artificial intelligence applications
I also have knowledge of: AWS, Terraform, Snowflake, Airflow, Python, SQL, Iceberg, DBT, Kafka, fastAPI, Flask, Dagster, Kubernetes, Docker, BigQuery, Linux, Python, Java, Scala.
I also place great importance on transparency with my clients.
I send a weekly report to my clients every end of the week on all the tasks I have performed.
I am also committed to delivering my projects on time. In fact, I can provide you with a number of references that can attest to this.
Do you have a project?
Contact me directly on Malt.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Lille (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km), Rennes (up to 50km)
Experience
- PluxeeSenior Data EngineerBANKING AND INSURANCEJuly 2025 - June 2026 (11 months)Paris, FrancePluxee, a spin-off of Sodexo listed in 2024, is a global leader in employee benefits: 28 countries, +5,600 employees, +€1 billion in revenue.As part of the acquisition of Glady (formerly Wedoogift: 355 employees, 30,000 client companies, 5 million beneficiaries) by Pluxee, I joined the EU2 spoke (4 data engineers, 5 data analysts).My responsibility: migrate the entire Glady data stack (AWS, Redshift, dbt, Glue) to the Pluxee stack (Azure Synapse, Data Factory, SQL Pool, Blob Storage, Spark). A major undertaking: +300 models, +100 business users, +10 sources, and hundreds of tables.What I did:- Set up hundreds of ingestion pipelines from heterogeneous source databases- Migrated ingestion from AWS/Redshift to Azure Synapse- Rebuilt data models for critical dashboards- Prioritized strategic use cases with analysts and business stakeholdersResults:- Critical dashboards and underlying models migrated in 1 year- Zero service interruption for +100 business users- Mission accomplished in a complex acquisition contextStack: Azure Synapse, Data Factory, SQL Pool, Blob Storage, Spark, AWS, Redshift, dbt, Glue, Python, SQLClient testimonial available on my LinkedIn profile and below (screenshot)
- Octopus EnergySenior Data EngineerENERGY AND UTILITIESFebruary 2025 - Today (1 year and 6 months)Paris, FranceOctopus Energy is a global leader in green energy, present in 18 countries with nearly 10 million customers, including 500,000 in France. The company aims for 1 million French customers by 2026, supported by massive investment in the energy transition.Tasked with replacing the Senior Data Engineer for France, I ensured operational continuity for a data team of 10 people (analysts and data scientists). I took charge of supporting existing pipelines while initiating new high-impact data projects.Tasks performed:- Maintenance and monitoring of production pipelines- Daily support for the data team (10 people)- Integration of new data sources via AWS DMS and Databricks- Creation of a field prospecting dataset to maximize the impact of sales teams- Implementation of Metabase ProTechnical Stack: Python, SQL, Databricks, Spacelift, Terraform, dbt, AWS (S3, RDS, DMS), AirflowClient testimonial available on my LinkedIn profile and below (screenshot)
- DoctolibSenior Data EngineerMEDICALJuly 2024 - December 2024 (5 months)Levallois-Perret, FranceDoctolib is the European leader in digital health, with over 300,000 healthcare professionals and 70 million monthly users. Founded in 2013, this scale-up has raised over €500 million to support its expansion.Following the acquisition of Siilo by Doctolib, I joined the Data Engineering team, consisting of 4 data engineers and a product manager, to lead the migration of Siilo's data and provide strategic KPIs to management.I performed the following tasks:- Planning the migration to provide the KPIs requested by management- Audit of Siilo's data stack: Siilo's data sources, pipelines, and dashboards- Development of a secure pipeline to integrate Siilo's MySQL database into Redshift, with data pseudonymization- Planning the migration of Siilo's event tracking system- Design of data models with the analytics teamsHere are the main results obtained:- Successful migration of the MySQL database in 4 months, in a secure environment- Migration of the event tracking system planned and delegated- Delivery of data model schemas- Project now well underway, with 80% of KPIs being deliveredLink: doctolib.frTechnical Context: DBT, Airflow, Redshift, Terraform, Python, SQL, AWS Glue, AWS Athena, AWS S3Client testimonial available on my LinkedIn profile and below (screenshot)
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Education
- Master's degree from ENSAIL’ENSAI (École Nationale de la Statistique et de l’Analyse de l’Information) is a public graduate school specializing in statistics and data science, under the French Ministry of Economy and Finance. Located in Rennes, it has been training data experts since 1994 and has graduated several thousand students. I followed the SID (Statistics and Data Engineering) program.2019Sciences et ingénierie des données
- University Diploma in Technology (DUT) in Statistics and Business IntelligenceThe IUT of Lisieux, a campus of the University of Caen Normandy, has specialized in training profiles in data analysis and business intelligence since 1994. I completed the "Statistics and Business Intelligence" (STID) DUT.2015Statistiques et informatique décisionnelle