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Guillaume ArgilesGA

Guillaume Argiles

E-commerce Project Manager • PrestaShop Expert 3*

€540/day
20 projects
Montpellier, FR
8-15 years

Average response time: 2 hours

Freelancer profile translated to English.
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About Guillaume

E-commerce Project Manager and PrestaShop Expert


I help e-merchants manage, develop, and optimize their online stores on a daily basis.

My role goes beyond development: I start with the need, identify friction points, propose the most relevant solutions, and then implement them with a pragmatic, results-oriented approach.

I primarily engage in recurring support, often one day a week, to help my clients grow their business without the overhead of an agency. This can include TMA (Third-Party Maintenance) management, custom development, progressive redesigns, integration of new services, or continuous improvement of an existing PrestaShop store.

My background allows me to bring a rare, comprehensive vision: originally a developer, then a Scrum Master, and now data-oriented, I combine technical expertise, requirements gathering, prioritization, and an understanding of e-commerce challenges. I am accustomed to taking full ownership of projects: needs, solutions, costing, implementation, monitoring, and continuous improvement.

What my clients particularly appreciate is my solution-oriented approach. I don't sell development for the sake of development: I first look for the simplest, most useful, and most profitable solution for the project. And if the best solution requires neither heavy development nor unnecessary intervention, I say so.

I currently support several e-merchants long-term on topics related to growth, reliability, and evolution of their PrestaShop stack.

Main Expertise:

E-commerce TMA Management
PrestaShop Expertise
Requirements Gathering and Prioritization
Custom Development
Website Redesign and Evolution
New Service Integration
Continuous Optimization
  • French

    Native or bilingual

  • English

    Fluent

Can work on-site
Montpellier (up to 50km), Perpignan (up to 70km), Narbonne (up to 50km)

Experience

  • Prestashop
    Customer Data Manager / Scrum Master / PrestaShop Developer
    E-COMMERCE
    December 2020 - Today (5 years and 6 months)
    Context:
    Internal evolution for nearly 6 years within PrestaShop, with a career path covering development, project management, data, and the use of AI in a structured framework.

    Mission:
    Develop a transverse vision of e-commerce through several complementary functions: module development, agile management, process quality, data monitoring, and guidance on AI practices.

    Interventions:

    Module development and participation in delivery tasks
    Process management and team support as a certified Scrum Master
    Structuring work methods and improving delivery
    Data-focused work on user tracking, performance measurement, and data quality
    Participation in implementing tools and best practices for AI-assisted development
    Guidance on usage to balance acceleration, quality, and security

    Result/Impact:
    A comprehensive journey that strengthens a 360° vision of e-commerce, blending technical expertise, management, data, and the ability to structure the use of new tools for the benefit of the teams.
    Agile Methodology Scrum PrestaShop PHP PrestaShop module
  • Expressive E
    E-commerce Project Manager / PrestaShop Expert
    FILM AND AV
    May 2022 - Today (4 years and 1 month)
    Context:
    Supporting a brand specializing in musical instruments for 4 years in the continuous evolution of its PrestaShop e-commerce ecosystem.

    Mission:
    Taking over from a previous agency, with the goal of accelerating developments, structuring technical aspects, and supporting business growth in e-commerce, logistics, and operational areas.

    Interventions:

    Management and implementation of PrestaShop site evolutions
    Technical migrations and PrestaShop version upgrades
    Specific developments around customer accounts, product reservations, and advanced logistics management
    Implementation of marketing tools and services migrations
    Structuring of financial dashboards and monitoring tools
    Management of advanced business topics, particularly regarding credit notes and commercial discounts
    Support and mentoring of internal teams on the PrestaShop ecosystem

    Result/Impact:
    Sustainable and transversal support, enabling the company to continuously evolve its e-commerce, handle complex logistical challenges, and gain autonomy on its PrestaShop projects.
    PrestaShop module PrestaShop
  • XL PNEUS
    E-commerce Project Manager / PrestaShop Expert
    E-COMMERCE
    July 2025 - Today (11 months)
    Lunel, France
    Context:
    Supporting a tire company for 8 months with both B2C and B2B sites, facing significant challenges in performance, SEO, and structuring of existing systems.

    Mission:
    Taking over from a slow agency for daily tasks, with the objective of prioritizing key projects, improving performance, and accelerating business results.

    Interventions:

    Audit of existing systems and structuring of technical priorities
    Site performance improvement and display time optimization
    Work on search and navigation for a very large catalog
    Creation of hundreds of category pages to strengthen SEO for tire dimension searches
    Development of advanced recommendation modules to highlight strategic products
    Implementation of marketplace feeds to expand acquisition channels

    Result/Impact:
    A faster and better-structured site, with display times reduced by approximately 50%, a significant increase in SEO traffic for targeted pages, and a substantial rise in revenue during certain periods.
    PrestaShop module PrestaShop

Reviews

5.0

Out of 12 ratings

BrunoB

Bruno

Ressources & Actualisation

Reviewed on 9/25/2023

Mission perfectly executed, thank you very much to Guillaume for his professionalism, which we rarely encounter, it is a real pleasure to work together.
R

Roméo

Expressive SAS

Reviewed on 4/25/2022

Professional, involved, and available, it was a pleasure to work with Guillaume.

Recommendations

JD
Julien DumartinetJD
Julien D'Hulst and 1 other person have recommended Guillaume

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Education

  • BTS in Computer Science and Networks in Technical Industry and Services
    Lycée Pablo Picasso
    2011
    Initiations aux différents langages et méthodologies de développement
  • Professional Bachelor's Degree in Systems Administration
    Université Perpignan - Via Domitia
    2012
    Installation, maintenance et déploiement de systèmes informatiques. Serveurs Apache et IIS

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