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Christian LetourneurCL

Christian Letourneur

Expert Mainframe COBOL z/OS Developer Analyst

€500/day
Niort, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Christian

EXPERT COBOL MAINFRAME VB6 SQL
Analyst developer with over 30 years of experience in mainframe systems evolution and VB6 application creation. I work on various design and development projects, combining technical and functional expertise. Expertise in collecting accounting data and implementing automated solutions.
Rigorous, organized, and autonomous, I support modernization, optimization, and migration projects towards sustainable solutions, while ensuring service continuity.

Linkedin Profile @christian-l79
  • French

    Native or bilingual

  • English

    Conversational

Can work on-site
Niort (up to 50km), Poitiers (up to 50km), Bressuire (up to 50km)

Experience

  • CARPIMKO
    Cobol - VB6 - C# - SQL Developer Analyst
    PUBLIC SECTOR
    July 2016 - May 2025 (8 years and 10 months)
    78280 Guyancourt, France
    • Optimize core accounting applications of the mainframe IS
    • Assist TMA in replatforming from mainframe to Linux / Microfocus
    • Responsible for legacy VB6 applications, retirement calculations
    • Manage Access databases for quarterly retirement settlements

    • Develop C# applications for mail modernization
    • Continuous improvement of the data warehouse, lightweight DataWarehouse, for business analytical needs
    • Handle Mantis tickets on SSRS reporting and SSIS ETL

    Bull DPS7–TDS – COBOL –ACCESS - VB6 - SQL SERVER - GIT - VISUAL STUDIO - C# - GITFLOW – SSIS / SSRS – OPCON - EVERTEAM
    COBOL Microsoft Access VB6 SQL Server .NET C#
  • MMA
    Mainframe Developer Analyst
    BANKING AND INSURANCE
    January 2013 - January 2016 (3 years)
    28000 Chartres, France
    • Design tools for transmitting accounting data to Covéa tools
    • Create flows for BFC to produce regulatory reports
    • Centralization for BFC
    • Optimization of SAI accounting chains
    IBM MVS – CICS – SPITAB – COBOL – VSM – SCLM – GL:M – SAI (RDJ) - HARRY - JIRA
    IBM Mainframe COBOL CICS DB2 JCL
  • BNP PARIBAS
    Mainframe Integration Analyst
    BANKING AND INSURANCE
    January 2012 - January 2013 (1 year)
    Montreuil, France
    • Transverse unit for 'account keeping' and 'savings' projects
    • Create test cases in QC based on project requirements
    • Monitor execution and full MOE integration of the Priority Banking project
    • Requirements and specifications in RSM
    • MOE integration in QC
    • MOE / MOA / subcontractor coordinator
    IBM RSM – UML – QUALITY CENTER – SDO – MVS/COBOL/DB2 – JAVA - VIOTO
    HP Quality Center MVS COBOL IBM Db2 UML

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Education

  • C# 8
    2022
    C# 8
  • SQL Server Database Performance Management
    2019
    Gestion des performances des bases SQL Server

Skill set

Categories