You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Julien JadczakJJ

Julien Jadczak

Expert Shopify · WooCommerce · WordPress

€400/day
13 projects
Clermont-Ferrand, FR
3-7 years

Average response time: 24 hours

Freelancer profile translated to English.
Back to original language

About Julien

Expert Shopify & WooCommerce · Creation, Migration & B2B

Need a reliable developer to boost your e-commerce without getting lost in technical jargon? I help D2C brands and B2B players with the creation, redesign, and technical migration of their platforms.

🛍️ Cutting-edge Shopify & Shopify B2B
Custom Liquid theme development, complex catalogs, and advanced B2B logic (tiered pricing, VAT validation, case-level stock management). Smooth, scalable, and 100% manageable stores.

🔄 Secure Migrations (Zero SEO Loss)
Migration from PrestaShop, WooCommerce, or Wix to Shopify. I secure the transfer of your customer data, order history, and URL structures to preserve your Google ranking.

🎨 UX Redesign, Performance & Business Tools
Optimization (CRO): Restructuring the purchase funnel and fast mobile interfaces.

Integrations: CRM, ERP, advanced logistics connection, and stock synchronization.

🌐 WordPress & Showcase Websites
Custom-built showcase websites (Elementor Pro / ACF) structured for local SEO.

💡 The strength of an agency, the flexibility of a freelancer
Depending on the project's scope, I leverage a network of freelance partners (graphic designers, copywriters, SEO experts). You maintain a single point of contact with the responsiveness of a full team.

💻 Modalities:

Remote: Equipped for Full Remote (France and Switzerland).

Local: Travel and scoping workshops in Clermont-Ferrand and Puy-de-Dôme (63).

Let's discuss your goals during an initial chat.
  • French

    Native or bilingual

  • English

    Fluent

Remote only
Primarily works remotely

Experience

  • La Niche Rebelle
    Shopify Store Creation – La Niche Rebelle
    LUXURY GOODS
    December 2025 - February 2026 (2 months)
    Clermont-Ferrand, France

    Shopify store creation for a Swiss brand of designer dog houses: high-end, highly customizable products, at the intersection of interior design and pet accessories.

    Design & Branding

    Elegant design consistent with the brand's premium positioning
    Highlighting products through a strong visual identity (interior design, dog lifestyle)
    Rich product pages with interactive hotspots and customization galleries

    E-commerce Features

    Structured Catalog: Niches (bench, corner), matching cushions, accessories
    Product Variant Management: 13 colors, 22 oak variations, 6 exclusive finishes
    B2C Purchase Funnel and B2B Portal (dedicated professional page)
    FAQ, Blog, and Brand Content Pages

    SEO & Structure

    Site architecture designed for SEO in French-speaking Switzerland
    Optimized tags and structure per product page
    Shopify Store E-commerce Store E-commerce Migration E-commerce UX Shopify SEO
  • ADG Diffusion
    Shopify B2B Store Creation – Artisanal Chocolate & Distribution
    AGRICULTURE
    April 2025 - July 2025 (3 months)
    Clermont-Ferrand, France
    Shopify B2B Store – Chocolate & Artisanal Distribution

    Full development of a Shopify B2B store for a chocolate distributor serving bakeries and artisans: 100+ product catalog, advanced pricing logic, and regulatory compliance.


    Custom B2B Pricing

    Automatic volume discounts based on cart thresholds
    Tiered catalogs and pricing per customer segment
    Deferred payments and professional invoicing

    Access & Compliance

    Intra-community VAT number validation upon registration
    Allergen module compliant with European regulations (INCO)

    Operational Management

    Stock management with alerts and minimum order per item
    Shipping configured by geographical zone (free shipping thresholds, carriers)

    Shopping Experience

    Custom Liquid theme for a smooth and professional checkout process
    Structured product pages: nutritional, technical, and marketing data

    Support

    Comprehensive training for autonomous back-office management
    Post-launch follow-up with iterative adjustments
    Shopify Shopify B2B Shopify Plugins Expert Shopify Shopify Development
  • La Petite Chaloupe
    Shopify B2C Store Creation – La Petite Chaloupe
    AGRICULTURE
    July 2024 - December 2024 (5 months)
    Paris, France

    Online store creation for a Parisian delicatessen specializing in seafood preserves: sardines, tuna, salmon, and artisanal products from the best French canneries.


    Design & Branding
    • Responsive design adapted to the brand's marine and artisanal theme
    • Smooth shopping experience, designed for a catalog of gourmet specialties

    E-commerce Features
    • Product catalog structured by ranges (sardines, specialties, preserves)
    • Stock management, product variants, and optimized product pages
    • Online checkout and payment configured
    • Wishlist and restock notifications

    SEO & Monitoring
    • SEO structure optimized for product referencing
    • Google Analytics configuration
    Shopify Shopify SEO E-commerce E-commerce Store Shopify Store

Reviews

5.0

Out of 11 ratings

MaritzaM

Maritza

Maritza Desjonquères

Reviewed on 3/21/2024

Excellent, he is very professional and serious!
M

Mme

Intimani

Reviewed on 5/20/2023

Serious, reliable, meets deadlines, and 150% invested! Good advice and attentive!

Recommendations

HS
Aurore B.AB
FD
Hélène S and 2 other people have recommended Julien

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • Webmarketing Certification - Develop your business with webmarketing
    Ecole DCM formation
    2020
    Certification Marketing Digital : Réseaux Sociaux / Community Management et Stratégie Social Media / Référencement naturel / Google Ads / Content Marketing / Display: Stratégie de Branding / Droit du Web / RGPD / E-commerce et Propriété intellectuelle / Email marketing: Influence Marketing / UX / Google Analytics

Certifications

  • Webmarketing Certification - Develop your business with webmarketing
    Ecole DCM FORMATION
    2019
    UX / UI Website Creation WordPress Landing Page

Skill set

Categories