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Romain MazièreRM

Romain Mazière

Supermalter

Data Engineer, DevOps, DBA/PostgreSQL Trainer

€750/day
10 projects
Bordeaux, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Romain

My goal is to actively participate in the creation and modernization of IT systems for companies, local authorities, and administrations.
But also to enable better use of data, whether internal, external, and/or from open data.

My areas of expertise are mainly:
- data (standardization, valuation, exploitation, documentation, ...),
- databases, mainly PostgreSQL, implementation, administration, migration, high availability, monitoring, training,
- mapping, design of Geographic Information Systems (QGIS, PostGIS, pgRouting, geoserver, Maplibre...),
- DevOps/DevSecOps, rationalize physical resources, standardize and automate administration, design, and infrastructure deployment tasks (Terraform, Ansible, Gitlab CI/CD, Docker...),
- infrastructure with the implementation of the open-source hypervisor Proxmox VE.

All while favoring free tools and software.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Bordeaux (up to 50km), Paris (up to 50km), Toulouse (up to 50km), Lyon (up to 50km), Nantes (up to 50km)

Experience

  • ANCT
    DevOps/Data Engineer
    PUBLIC SECTOR
    August 2024 - Today (1 year and 10 months)
    Paris, France
    Implementation of the infrastructure for creating a data lake for the "Société Numérique" program of ANCT, which works for the benefit of general interest digital services.
    Database Design and Modeling, managed by migrations and integrated into GitLab CI/CD.
    Deployment of an Apache Airflow instance to manage the data processing workflow.
    Data visualization is done via a Metabase instance.
    An API is exposed, using PostgREST.
    Debian Gitlab CI/CD PostgreSQL Airflow
  • SIGMAZ Consilium
    Founder
    TECH
    October 2022 - Today (3 years and 8 months)
    Gironde, France
    I decided to create my own company, the goal is to actively participate in the creation and modernization of IT systems for companies, local authorities, and administrations. But also to enable better use of data, whether internal, external, and/or from open data. The value proposition is based on the following pillars:
    - data (standardization, valuation, exploitation, documentation, ...),
    - databases, mainly PostgreSQL, implementation, administration, migration,
    - mapping, design of Geographic Information Systems (QGIS, PostGIS),
    - DevOps / DevSecOps, rationalize physical resources, standardize and automate administration, design, and infrastructure deployment tasks. All while favoring free tools and software, as well as open data.
    PostgreSQL Proxmox Apache Airflow PostGIS DevOps
  • La Piscine
    SQL Trainer
    EDUCATION AND E-LEARNING
    November 2024 - May 2025 (6 months)
    Mérignac, France
    Participation in the web developer training course for people retraining for professional purposes.
    Intervention on the database module, SQL for MySQL.
    Participation in the web developer training course for people retraining for professional purposes.
    Intervention on the database module, SQL for MySQL.
    Training Pedagogy Database SQL MySQL

Reviews

5.0

Out of 6 ratings

F

Ferdinand

Product Manager - France Numérique Ensemble

Several weeks project

-

Reviewed on 3/27/2026

F

Ferdinand

Product Manager - France Numérique Ensemble

Several weeks project

-

Reviewed on 1/29/2026

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Education

  • DevOps Consultant, IT
    ib - groupe Cegos
    2022
    Consultant DevOps, Informatique
  • Master 2 Information Systems Technologies, IT
    Ecole nationale des Sciences géographiques
    2017
    Master 2 Technologies des Systèmes d'Information, Informatique

Certifications

  • ITIL 4 Foundation
    PeopleCert

Skill set

Categories