About

Christopher VALLOT, Data & BI Consultant

Based in Tours, I work with businesses remotely, in hybrid arrangements or on site.

ToursRemoteHybridOn site

My approach

Connecting data, technology and business needs.

I started in software development and gradually moved into Data and Business Intelligence. My experience covers integration, data quality, automation and reporting.

I enjoy bringing order to data and processes that have become hard to maintain. I start with the business need to build a reliable, documented solution that teams can understand.

LinkedIn profile Download my CV (French)

Experience

Selected experience

Assignments from my professional background, not freelance client references. My CV provides the full details.

Since July 2025
Tours

Data Analyst

Apside · assignment CNAV

Within CNAV’s Data Factory, I work on multi-source data integration and migration between different environments.

Contributions

Translating business rules and adapting processing during migrations.
Developing a process for pseudonymising and reconciling data.
Building a tool to automate public data collection.

Technologies

Python
PySpark
SQL
Shell
Cloudera
Teradata
Jenkins
GitLab

View the case study

April 2025 — June 2025
Saint-Pierre-des-Corps

Software Development Engineer

Apside

At Apside’s Innovation team, I contributed to exploratory projects involving data collection, automation and artificial intelligence.

Contributions

Collecting documents from public procurement platforms and structuring unstructured content.
Using CRM data to automate certain assignment tasks.
Developing a semantic comparison system and a modular architecture to support future changes.

Technologies

Python
Playwright
LLaMA
JSON
GitLab

View the case study

February 2024 — March 2025
Angers

Data Analyst

Apside · assignment Harmonie Mutuelle

Within Harmonie Mutuelle’s BI team, I worked on the reliability of health and personal protection insurance data flows.

Contributions

Evolving integration processes, extracting, transforming and consolidating data from multiple sources.
Checking consistency and reconciling the processed data.
Automating data reconstruction and loading into the BI system.

Technologies

SAS
Python
SQL
PowerShell
Power BI

View the case study

March 2022 — July 2023
Saint-Pierre-des-Corps

Data Analyst

Apside · assignment Harmonie Mutuelle

At Harmonie Mutuelle, I worked within a Datalab on business needs for analysis, reporting and data quality.

Contributions

Analysing, integrating and structuring datasets for business needs.
Identifying and correcting data anomalies.
Creating reports and dashboards, then automating their distribution.

Technologies

Power BI
DAX
Power Query
Power Automate
SQL
Python

View the case study

November 2019 — June 2021
Poitiers

Software Development Engineer

Apside · assignment Banque de France

Within Banque de France’s Artificial Intelligence team, I contributed to bringing a company rating model into operational use for credit risk assessment.

Contributions

Adapting the model to technical constraints and evolving its associated processing.
Preparing and analysing the data needed for the model to function.
Developing a web service to expose the model.

Technologies

Python
Pandas
NumPy
Scikit-learn
Matplotlib
ONNX

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November 2018 — March 2019
Saint-Avertin

Python Developer

Dstny

At Dstny, I worked on centralising, processing and checking data from multiple sources.

Contributions

Exchanging data with databases, automating external information retrieval and generating PDFs.
Checking consistency and setting up alerts for data changes.
Optimising some processes through parallel execution.

Technologies

Python
API
SQL
JSON

View the case study

How I work

Three priorities when working with teams.

Scope before building

I start with the business need, available sources and expected outcome to define what will be useful.

Build for the long term

I favour processing that is readable, repeatable and straightforward to maintain.

Make data understandable

I document processing and present information so teams can understand it and take ownership.

Education

Education and language

Bachelor’s degree in Computer Science · Université de Tours

2015 — 2018 · Tours

English

Very good reading comprehension, intermediate spoken English.

A similar challenge?

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