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Valentin MartinVM

Valentin Martin

Integration Architect / Tech Lead MuleSoft

€650/day
Nantes, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Valentin

Lead Developer / API Integration Architect specialized in IT integration, MuleSoft, Java, and API architectures.

I support companies in the design, development, and reliability of integration platforms: REST APIs, MuleSoft flows, middleware, Kafka, MongoDB, CI/CD, monitoring, and industrialization of exchanges between applications.

I particularly work on complex environments with multiple business systems to connect: PIM, PLM, OMS, WMS, e-commerce, ERP, retail tools, or international platforms. My experience in the retail/luxury sector has allowed me to work on critical topics such as PIM → Shopify integration, OMS flows, WMS exchanges, middleware APIs, and production reliability issues.

What I can bring to a project:

  • technical scoping and integration needs analysis;
  • design of robust, maintainable, and documented APIs;
  • MuleSoft / Java / Spring development;
  • optimization and security of existing flows;
  • implementation of CI/CD, monitoring, and observability best practices;
  • support for technical teams, code review, and quality improvement.

I am comfortable with both operational delivery tasks and issues related to architecture, technical debt, production stabilization, or industrialization.

My approach: quickly understand the business context, identify real friction points, deliver cleanly, document what needs to be documented, and make systems more reliable without unnecessary complexity.

Available for full remote or mostly remote assignments, with occasional travel possible.
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Nantes (up to 50km), Paris (up to 10km)

Experience

  • Christian Louboutin,
    Integration Architect / Tech Lead MuleSoft
    LUXURY GOODS
    January 2021 - June 2026 (5 years and 5 months)
    Paris, France
    • • Steering integration architecture via MuleSoft (API-led connectivity)
    • • Technical referent and decision-maker on integration architecture topics, interface between business and IT teams
    • • Management of an international team of 4 developers (junior to intermediate)
    • • Design and implementation of critical APIs and flows (RAML, DataWeave)
    • • Guarantee of performance, reliability, and continuity of critical business flows
    • • Redesign of SI flows (Mastermind) → PLM Simplification → PIM, elimination of cascading flows → Rationalization of pricing flows (M3 single source)
    MuleSoft API IT Architecture Team Management
  • SNCF Connect & Tech,
    Backend Java Developer
    January 2018 - August 2021 (3 years and 7 months)
    Nantes, France
    • • Development of backend services in Java (Spring / REST APIs)
    • • Contribution to the evolution of a high-traffic, high-availability system
    • • Participation in technical design and performance improvement
    • • Collaboration with product and technical teams in a complex environment
    • • Resolution of production incidents on services with high business stakes

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Education

  • Expert in Information Technology degree
    EPITECH
    2016
    diplôme d'expert en technologies de l'information

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