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Valentin CossonVC

Valentin Cosson

Engineering Manager | Delivery, Organization, Scale

€750/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Valentin

Freelance Engineering Manager, I work with tech teams that need more clarity, better steering, and more visible delivery.

My role is to support employees, structure the team's operations, clarify priorities, and streamline coordination between product and development.
My technical background allows me to understand subjects, challenge certain decisions, and occasionally unblock complex issues, without being the team's main developer.
I intervene mainly in contexts of growth, reorganization, recruitment, onboarding, or the creation of new teams.

My approach is sober, pragmatic, and grounded in the field.
  • French

    Native or bilingual

  • English

    Conversational

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

Experience

  • Kolecto
    Senior Engineering Manager
    SOFTWARE PUBLISHING
    February 2024 - March 2026 (2 years and 1 month)
    Paris, France
    Accompanying several squads and about fifteen developers in a growth context, with a role focused on proximity management, delivery structuring, and product-tech coordination.

    • Management of several squads in an evolving scope, with individual coaching, feedback, and skill development.
    • Creation, splitting, and stabilization of squads based on team growth, business needs, and ongoing recruitment.
    • Participation in over 15 recruitments for developer and manager profiles, as well as fit interviews for cross-functional roles.
    • Implementation of rituals to streamline PM/Dev collaboration, enhance work visibility, and improve post-mortem follow-up.
    • Steering a critical launch of new offerings at the end of 2024 within a very tight deadline, including estimation, prioritization, scope arbitration, cross-team coordination, and regular communication.
    • Testing and iteration on AI and agentic AI in development processes.
    Engineering Management Tech Recruitment Team Management Tech Roadmap Artificial Intelligence
  • John Paul
    Senior Software Engineer
    LUXURY GOODS
    April 2023 - February 2024 (10 months)
    Paris, France
    Development of a white-label and fully modular web, mobile web, and mobile application (fully dynamic rendering) for JohnPaul's clients.
    Implementation of actions/process improvements to positively impact delivery and improve the visibility and predictability of developments.
    Delivery Management Agile Method Recruitment React.js React Native
  • TTM Transports Rungis
    Senior Software Engineer
    LOGISTICS AND SUPPLY CHAIN
    January 2023 - April 2023 (3 months)
    Rungis, France
    Creation (from scratch) solo of an application for managing drivers / vehicles / contracts and scheduling for transport operations management:

    • Backend in Django with Django Rest Framework
    • Frontend in React with Refine / ReactQuery and MaterialUI
    • Simple infrastructure with Vercel and Render
    Django REST React.js Django Rest Framework

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Education

  • Digital Architect
    42 - Born2Code
    2016
    Basée sur le peer-to-peer learning : un fonctionnement participatif qui permet aux étudiants de libérer toute leur créativité grâce à l’apprentissage par projets. Ecole fondée par Florian Bucher, Xavier Niel, Nicolas Sadirac et Kwame Yamgnane en 2013 alors que l’industrie du numérique est en plein manque de développeurs informatiques en France. "42, c’est notre réponse à ce que devrait être l’école de demain."

Certifications

Skill set

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