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Bastien SeguraBS

Bastien Segura

Data Engineer | GCP, BigQuery, Azure, SQL, Python

€550/day
Montpellier, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Bastien

Senior freelance Data Engineer, I help teams regain control over cloud or hybrid data platforms that have become difficult to operate.

I intervene when the platform becomes a bottleneck instead of a lever: excessively long processing, recurring incidents, technical debt, fragile deployments, lack of industrialization or monitoring.

**My approach**: rapid diagnosis, root cause identification, reliable critical components, simplification of the existing. The goal is to allow your team to develop, deploy, and operate without friction.



**Examples of impact**:

• Incident recovery time reduced from half a day to less than 10 minutes on a hybrid GCP / SQL Server chain
• Processing time reduced from 4 hours to 25 minutes on a critical SQL Server / SSIS pipeline

I work on GCP, Azure, SQL Server, and Python. If your data platform is in this situation, I am available to discuss it.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Montpellier (up to 20km), Paris (up to 20km), Lyon (up to 20km), Toulouse (up to 20km)

Experience

  • Capgemini
    Senior Data Engineer | GCP & Hybrid Data Platforms | Mission for Orange
    TELECOMMUNICATIONS
    June 2023 - December 2025 (2 years and 6 months)
    Montpellier, France
    Data engineer within a strategic hybrid GCP / SQL Server platform, with a role focused on reliability, industrialization, and operational simplification.

    • Elimination of a systemic failure point across over 80 sourcing flows: complete redesign of orchestration so that an isolated incident no longer blocks the entire chain. Recovery time reduced from half a day to less than 10 minutes.

    • Redesign of a central SQL Server / SSIS pipeline that had become too slow with increased load: rationalization of DataMart access, simplification of business logic. Processing time reduced from 4 hours to 25 minutes.
    • Reference for the GCP scope: technical scoping, onboarding new joiners, leading skills development workshops, and disseminating platform standards.
    Google cloud Big Query Python SQL SQL Server
  • CGI
    Cloud Data Consultant | Azure, Snowflake, DevOps
    CONSULTING AND AUDITS
    January 2021 - May 2023 (2 years and 4 months)
    Montpellier, France
    Intervention in two demanding contexts in finance and aeronautics (Pernod-Ricard, Airbus), with a common thread: data platform reliability, flow industrialization, and deployment automation.

    • Adaptation of about ten SQL flows on Snowflake after a major source change in a group financial scope, without continuity disruption on key data.
    • Design of Snowflake pipelines to consolidate data from heterogeneous information systems and ensure reporting reliability.
    • Migration of Azure Data Factory pipelines to ADLS Gen2 in a critical industrial environment.
    • Design of an SQL procedure automation system to eliminate risky manual interventions during deployments.
    Microsoft Azure Snowflake SQL Azure DevOps Azure Data Factory

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Education

  • Certified: Azure Data Engineer Associate (DP-203).
    Microsoft
    Certified : Azure Data Engineer Associate (DP-203).
  • Master in Computer Science – Data, Knowledge
    University of Montpellier
    2021
    Master Informatique – Données, Connaissances

Skill set

Categories