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Serge LareserveSL

Serge Lareserve

Consultant DBA PostgreSQL, MSSQL Server, Oracle

€670/day
1 project
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Serge

Experienced database consultant/architect in the design, migration, and optimization of complex database management systems. Certified multi-DBMS expert (SQL Server, Oracle, PostgreSQL, DB2, MySQL) with strong expertise in performance tuning, large-scale migration, and building high-availability architectures. Recognized for my ability to lead strategic data transformation projects, including cloud migrations (Azure, GCP) and modernizations of legacy infrastructure to modern architectures.
  • English

    Native or bilingual

Can work on-site
Paris (up to 50km)

Experience

  • Banque Fiducial
    SQL Server
    November 2025 - February 2026 (3 months)
    Design and deployment of SQL Test Qualification environments. Migration of DB2 structures to SQL Server via SSMA with specific data type conversion. Development of data anonymization scripts for GDPR compliance. Implementation of a CDC solution for real-time synchronization via SSIS. Skills transfer and complete technical documentation.
  • BPI France (Banque Publique d'Investissement)
    SQL Server & PostgreSQL DBA
    March 2024 - July 2025 (1 year and 4 months)
    Complete redesign of operational procedures and normalization of the SQL Server base. Maintenance in operational condition and upgrade of DB2 V11 instances in a critical production environment. Architecture audit and performance optimization on SQL Server and PostgreSQL environments. Migration and modernization of PostgreSQL 13 to PostgreSQL 15/16. Migration of the TSM backup base to Commvault with restore tests. Participation in PCA/PRA tests and management of production on-call duties. Environment: PostgreSQL 13-16, SQL Server 2017/2022, DB2 V11, Linux, PowerShell, Ansible, Commvault, Git, pgbackrest.
  • Groupe E. Leclerc (GALEC)
    Multi-DBMS Technical Reference DBA
    January 2014 - January 2018 (4 years)
    Leadership of cloud migration programs to Azure and GCP (PostgreSQL, SQL Server, DB2). Migration and upgrade of SQL Server 2008/2012 to SQL Server 2017 (over 100 instances). Migration of DB2 9.5/10.5 to DB2 11.1 with performance optimization. Migration of Oracle and DB2 to PostgreSQL (standardization of the fleet). Deployment of high-availability SQL Server 2019 AlwaysOn clusters. L3 Support, performance audits, mapping, and supervision of critical infrastructures. Environment: PostgreSQL 9-15, SQL Server 2008-2017, DB2 V11, MySQL V5, Linux, PowerShell, Azure, GCP, Ansible, Python, Azure DevOps.

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Education

  • SQL Server DBA
    FCI
    2014
    DBA SQL Server
  • Integration DBA
    Groupe BPCE
    2013
    DBA Intégration

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