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Rithy KimRK

Rithy Kim

CONSULTANT TECH LEAD MAINFRAME / SENIOR MAINFRAME

€550/day
Paris, FR
15+ years

Average response time: 1 hour

Freelancer profile translated to English.
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About Rithy

Expertise in Mainframe Environment design and development with over 25 years of experience in the banking and retail sectors.

Solid experience in mainframe BUILD and RUN.
Production crisis cells - Business and cross-application impact analysis.
Business and user support.
Performance optimization of Batch and TP processes written in COBOL/PACBASE/DB2/DATACOM.

AREAS OF INTERVENTION:

- Business/user needs analysis
- Proposing solutions to the business
- Estimating costs
- Analysis, design, development
- Functional and technical writing, User guide, Procedure writing, User support
- Development of Test plans, qualification, homologation, acceptance
- RUN and Production Monitoring (incident management and resolution)
- Production Support
- Project Monitoring

TECHNICAL SKILLS:

UNIX, 3270 Mainframes, IBM 3090 under MVS/XA, GCOS, PC
MVS, TSO, PACBASE, COBOL, JCL, SHELL, SVN, CVS (packages), CICS, CFT, FTP, MQSeries, ENDEVOR, FILE-AID, XPEDITER, CATALOG MANAGER, PITAGOR, PLATINUM, XMLSPEAR, ISPF, IQS, PLSQL, KSL, C, VSAM, VTAM, IMS, JIRA, I-DELPHE, DASSE, THEKE

Scheduler: Unicenter TNG, AUTOSY, TWS/OPC, BETA92 (Log Management for z/OS)
DBMS: DB2, DATACOM, Oracle (PLSQL/developer), DL1, GESTAB, SPITAB
Methods: MERISE
Tools: DIMENSION, PCKBUILDER, PCKMANAGER, MVD1, AIDA, GAR2,
  • English

    Fluent

  • French

    Native or bilingual

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

Experience

  • STIME (Groupe Mousquetaires)
    Senior Analyst - Developer
    RETAIL (LARGE RETAILERS)
    March 2016 - November 2025 (9 years and 8 months)
    Châtillon, France
    SUPPLY CHAIN - Applications: Supplier Order (CF), Order Book, DISTELEX / RIGHTFAX, ATHOS, RAMSES / GOLD

    • Business needs analysis: active participation in workshops with users to understand business processes and formalize functional requirements.
    • Feasibility studies and cost estimation: estimation of development efforts and technical impacts, writing of load studies.
    • Technical and functional design: writing detailed specifications, analysis and design documents.
    • Development and maintenance: application evolutions and fixes in PACBASE and COBOL environment, with a strong requirement for quality and performance.
    • Unit tests, integration tests, business acceptance tests.
    • Preparation of different environments (dev, integration, business acceptance, pre-prod).
    • Technical and operational documentation: Operational and instruction documents for steering and production.
    • Go-live: management of deliveries and monitoring of deployments in conjunction with operations teams (Supply Chain Technical Operations Department: DOT_SUPPLY APPRO).

    Support and RUN: handling major production incidents (crisis cells), anomaly analysis, implementing hotfixes (data recovery solution or workaround).

    • Participate in disseminating communication points to the business and stakeholders to explain business impacts, potential impacts on other group applications, and decisions made by the crisis cell.

    • Performance optimization: audit of batch and online processes, optimization recommendations, implementation of continuous improvements.


    Technical scope:
    PACBASE (expert), COBOL (expert), DB2 (expert), DATACOM (expert), DIMENSION (expert), JCL (expert), CICS (Expert), MQ series (expert), CFT, TWS/OPC, BETA92, OASIS, FTP, MFT, …
    technical-functional Tech Lead
  • BNP PARIBAS
    Lead technical
    March 2014 - February 2016 (1 year and 11 months)
    CORE SPLIT ATLAS2 Project: Modernization of ATLAS 2 into 2 distinct and autonomous systems. Progressive transition of BNPP's application activities to TCS (service provider), in a mainframe environment (PACBASE, Atlas2, SI GL/SI CK).
  • BNP PARIBAS CIB - Cash management CME,
    Developer – Production Support Engineer
    BANKING AND INSURANCE
    February 2011 - February 2014 (3 years)
    Paris, France
    Context: Cross-functional production support for several European HUBs, in a highly standardized and industrialized environment.

    Within the team - TCM - Production Support
    Main responsibilities: Multi-site application support
    Handling production incidents across various European HUBs.
    Technical analysis of malfunctions and implementation of corrective solutions within tight deadlines.
    Incident tracking and document management:
    Documentation of incidents and associated resolutions according to ITE/TCM procedures.
    Participation in the continuous improvement of support processes.
    Liaison with technical and functional teams:
    Interface between development, operations, and business user teams for anomaly resolution.
    Contribution to improving service quality and platform stability.

    Within the project team - ATLAS and ORION Applications
    Participate in various development and evolution projects for the European treasury management system. Interventions on critical components in the areas of billing and commissions, as well as processes related to banking flows.
    Analysis of business needs for European Cash Management projects.
    Design and development of specific components in the ATLAS and ORION systems.

    • Release Manager for coordinating component deliveries to various environments (pre-production, production).
    Planning, supervision of deployments, follow-up of fixes, and version management.
    Business validation and support:
    Testing campaigns, user assistance, anomaly collection.
    Roadmap documents for multi-site production deployment.

    Management of various environments.

    Technical scope:
    UNIX, SHELL, PACBASE, COBOL, Oracle PLSQL/Developer, GESTAB, CFT, Unicenter TNG, JIRA, I-DELPHE, CVS, Livcomp, DASSE-V2

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Education

  • Physics Degree
    University of Cergy Pontoise
    1997
    Licence de Physique
  • Institut Point Com Informatique Grands Systèmes IBM / MAINFRAME
    1998

Skill set

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