Browse profiles Post a project
Malt welcom

Welcome to Guillaume's freelance profile!

Malt gives you access to the best freelancers for your projects. Contact Guillaume to discuss your project or search for other freelancer profiles on Malt.

Guillaume Berthier

Master Data & Informatica MDM Specialist

Can work in or around Lyon, Genève, Paris

  • 45.7539
  • 4.8469
  • Suggested rate €900 / day
  • Experience 7+ years
  • Response rate 100%
  • Response time 1 hour
Propose a project The project will begin once you accept Guillaume's quote.

This freelancer will be available again on 1/1/2023

Until 1/1/2023

Propose a project The project will begin once you accept Guillaume's quote.

Location and workplace preferences

Lyon, France
Can work onsite in your office in
  • around Lyon and 50km
  • Around Genève and 10km
  • Around Paris and 10km


Project length
Would prefer:
  • Between 3-6 months
  • ≥ 6 months
Would prefer to avoid:
≤ 1 week


Freelancer code of conduct signed
Read the Malt code of conduct

Verified email


  • English


  • French

    Native or bilingual


Skills (6)

Guillaume in a few words

Passionate about new technologies, I have a broad experience in large-scale Business transformation initiatives, business modeling and solution design on various industries (High Tech, Manufacturing, Shipping, HR Services) .

Experienced in Agile methodologies and MDM solution architecture, I have an extensive knowledge on Data Management, Data Governance, Data Quality Management, Multidomain MDM (Informatica MDM) and Metadata Management.

Native French and fluent in English, I love to work in a multi-cultural team environment ; I worked 5 years in Netherlands and 2 years in Japan.

Favorite Quote : "Individuals play the game, but teams beat the odds" - Navy SEAL



The Adecco Group - ADECCO

Human Resources

MDM Lead Solution Architect  - As a freelancer

Lyon, France

August 2018 - Today (4 years and 3 months)

I designed and built a solution to source, consolidate, certify and distribute 2 Master Data Domains (*) for The Adecco Group France on MDM Informatica 10.4 and IDQ 10.4.

(*) Business Organization and Human Ressources Master Data

Plan & Design Achievements :
- Established Business Project Scope with client.
- Gathered MDM High Level Requirements.
- Developped Project Plan & Build Roadmap for Incremental Delivery (Scrum)
- Assessed Data to be mastered based on legacy Oracle Data Integrator architecture
- Established Metadata Inventory from Source and consumer applications (Data Catalog)
- Assessed raw data quality (Data Profiling)
- Assessed Preliminary MDM Architecture Strategies (Batch Vs Online/BES API for distribution)
- Designed MDM Hub Conceptual Model for the 2 Domains (UML)
- Realized Proof of Concept on Business Terms Definition (Informatica DQ Analyst)
- Defined development standards for IDQ & MDM

Build Achivements :
- MDM Hub core model on Erwin Data Modeler (Base Objects and Hub Hierarchies design)
- ETL Data Acquisition with IDQ (mapping & quality transformations to load MDM Staging tables)
- Match & Merge (MDM Hub)
- MDM Data Director / Entity 360 Application (Business Entity/Views/Layouts)
- MDM Data Director / Entity 360 Hierarchies & Network
- MDM REST API (BES) publication
Informatica MDM MDM Informatica ETL Informatica DQ API UML ERWIN Oracle Entity 360 Business Entity Data Director

The Adecco Group - ADECCO

Human Resources

MDM Architect Consultant  - As a freelancer

Lyon, France

August 2020 - November 2020 (3 months)

Coaching/Training and Knowledge transfert for the Adecco Architecture & Integration team France.

Achievements :
I Realized a PoC (Proof of Concept) for the upcoming Client Master Data Domain : Preliminary client data model assessement versus the existing multidomain MDM Hub Model + PoC on hierarchies distribution over Business Entity Services 10.4 Rest API
Data Modeling Master Data Client Master Data


Consulting & Audits

IT Project Manager

Lyon, France

July 2017 - September 2018 (1 year and 2 months)

IT project manager / font-end developers team coordination / client project follow-up

The Adecco Group - ADECCO

Human Resources

IT Rollout Project Manager & Senior Consultant

Tokyo, Japon

August 2014 - March 2016 (1 year and 7 months)

Adecco Global front-office solution / Project Manager in charge of Japan Rollout

Achievements: Project Management tasks including budget monitoring, reporting and dashboards. Animation of the local steering committee and communication with the Japanese business stakeholders on project updates and milestones. Coodination with the global/local with project leaders based in Lyon and Zurich.

Workshops lead for the definition of the target solution and local customization. Coordination of local business analysts team. Followup with the delivery teams located in New-York and Lyon. Supervision of the implementation, configuration and coordination of functional acceptance tests (UAT) .

Definition of the local change management strategy related to the new processes and systems for end users (documentation, training plan, organization of user exchange workshops)



MDM & Data Goverance Consultant

Marseille, France

April 2014 - August 2014 (4 months)

Data Governance / MDM requirements gathering for Partners Data Domain (Semarchy)
Semarchy Master Data Management Data Governance

Avery Dennison

Raw materials industry

Senior Analyst Corporate Finance

Leyde, Pays-Bas

September 2010 - August 2013 (2 years and 11 months)

In charge of the commercial finance reporting for France and Eastern Europe market
Corporate Finance FP&A Controlling

Avery Dennison

Raw materials industry

Customer Master Data Solution design Lead

Leyde, Pays-Bas

September 2006 - August 2010 (3 years and 11 months)

In charge of the MDM Customer Master functional design

Achivements : Elaboration of the functional design, participation in the High Level Technical Design, coordination of process review workshop, functional testing, training and implementation accross Europe.
Customer Master Data Solution Design

2 projects on Malt

(1 rating)

Sergio - The Adecco Group


Excellent work. Guillaume is very professional and solution oriented. Can put himself on the position of the client and propose short/long term approaches if needed. Will continue working with Guillaume in future projects.