You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Malt Strategy
New report
Malt Tech Trends 2026
Marie SepanikMS

Marie Sepanik

Expert Shopify | E-Commerce PMO | CRO, UX, SEO

€650/day
5 projects
Paris, FR
3-7 years
Expert Shopify
E-commerce
Conversion Rate Optimization
Shopify Site Creation
Shopify Development

Average response time: 2 hours

Freelancer profile translated to English.
Back to original language

About Marie

Do you want a Shopify store that actually sells, not just a pretty website?

I will guide you through every step of your e-commerce project: creation, redesign, migration, and optimization, with a performance and conversion-oriented approach.

As a Shopify expert & web developer, I help e-commerce businesses structure, launch, and scale their stores with a clear vision: to turn your traffic into revenue.

Today, that means:
+40 clients supported
End-to-end Shopify projects, from launch to continuous optimization

Shopify Store Creation
  • Website architecture definition
  • Mockup integration (Figma)
  • Custom page development
  • Essential app setup
  • Full configuration (payment, shipping, tracking)

Redesign & Optimization
  • Conversion-oriented UX/UI redesign
  • Performance improvement (speed, mobile, technical SEO)
  • Customer journey simplification
  • Key page optimization (homepage, PDP, checkout funnel)

Migration to Shopify
  • Migration from WooCommerce, PrestaShop, etc.
  • Data transfer (products, customers, orders)
  • SEO redirects

CRO (Conversion Rate Optimization)
  • User behavior analysis
  • Identification of friction points
  • Concrete recommendations + implementation
  • Testing and iteration to improve your conversion rate

Shopify Project Management & Guidance
  • Coordination with developers and designers
  • Deadline and priority tracking
  • Global product/business vision

Support & Autonomy
  • Shopify training
  • Back-office onboarding
  • Strategic advice for store growth

Why work with me?
  • A technical + business approach
  • A results and conversion-driven mindset
  • Structured, clear, and action-oriented support

The goal: to make your store performant and profitable.

Have a Shopify creation, redesign, or optimization project?
Contact me.
E-commerce
Fashion and Cosmetics
Food and Beverage
Health and Wellness
Sports

  • French

    Native or bilingual

  • English

    Native or bilingual

Remote only
Primarily works remotely

Experience

  • Eaux-Vives
    Shopify Expert Developer & Consultant - E-commerce Creation
    HEALTH AND WELLNESS
    December 2025 - Today (8 months)
    Context
    A brand in the health/food supplement sector looking to launch a high-performing store with strong trust and conversion goals.

    Mission
    Shopify store creation
    Template integration and customization
    Purchase journey optimization (CRO logic)
    Payment and shipping system setup
    Complete back-office structuring

    Results
    Optimized checkout funnel to maximize conversion
    User experience tailored to a demanding sector (health)
    Infrastructure ready for scaling (marketing, acquisition)
    Time savings and clarity for the client in store management
    Shopify Site Creation E-commerce Store E-commerce Site Creation Shopify SEO Shopify Development
  • Manufacture Germain
    Shopify Expert Developer & Consultant - E-commerce Creation
    E-COMMERCE
    December 2025 - Today (8 months)
    Context
    An artisanal business looking to launch its online store to structure its sales and reach a wider market.

    Mission
    Complete Shopify store creation
    Design and theme selection support
    Page and content integration
    Product catalog structuring
    Back-office setup (products, shipping, settings)

    Results
    Store ready for launch with a solid foundation
    Clear and optimized customer journey
    Client autonomy in daily management
    Scalable foundation for revenue growth
    Shopify Site Creation E-commerce Site Creation E-commerce Store Shopify Expert Shopify Development
  • Moon Moon
    Shopify Site Project Manager - Redesigns, Migrations, Creations, Continuous Improvements, CRO
    E-COMMERCE
    October 2024 - November 2025 (1 year and 1 month)
    Context
    A Shopify-specialized agency assisting growing e-commerce brands with redesign, migration, and creation projects.

    Missions
    • End-to-end Shopify project management
    • Assisting brands with their migrations to Shopify
    • Managing redesigns and store creations
    • Coordinating development & design teams
    • Direct client liaison (scoping, follow-up, prioritization)
    • Optimizing user journeys with a CRO approach

    Results
    • Projects delivered on time with improved product structuring
    • Enhanced store performance (UX, fluidity, conversion)
    • Clients supported with greater clarity on their e-commerce strategy
    • Reduced project management friction thanks to a single point of contact
    Shopify Development Shopify Site Creation Shopify Expert Shopify SEO shopify store
Check out Marie's experience

Reviews

5.0

Out of 2 ratings

J

Julien

PPBBZJ OÜ

Reviewed on 8/30/2023

I worked with Marie on integrating a code for a redirect page. Marie's responsiveness allowed us to implement it on time. Marie is very professional and offers good advice beyond her assigned task. We will contact Marie again for future missions without hesitation. Thanks again 🙏
L

Loic

Gualap

Reviewed on 1/10/2023

Marie is very responsive and found a quick and effective solution to our problem. I highly recommend ⭐⭐⭐⭐⭐ Looking forward to working with you again, Loic

Recommendations

Virgil DuboisVD
Christian BernardCB
Thomas RondioTR
+1
Virgil Dubois and 3 other people have recommended Marie

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

Signup to reveal

Education

  • Bachelor in International Business
    Grenoble Ecole de Management
    2018

Certifications

  • Web Application Designer Developer
    Le Wagon
    2022
    Shopify Developer HTML5/CSS3 Ruby on Rails Figma Front-End Development JavaScript Shopify Website Creation Web Development Expert Shopify
  • TOEIC
    TOEIC
    2019
    English

Skill set

Shopify
Web Development
Web Design
Front-End Development
UI/UX
Responsive Design
E-commerce Site Creation
Audit
Front-end
Web Integration
Klaviyo
Shopify Developer
Shopify Theme
Shopify Liquid
UX
UX/UI
UX Audit
CRO
Shopify SEO
Shopify Expert
E-commerce Strategy
E-commerce SEO
E-commerce Store
Shopify Migration
Shopify Redesign
Shopify Training
Project Management
Project Management (PMO)
Consulting
Conversion Rate Optimization
Conversion Optimization
Online Store
Online Store Management
Shopify Store Creation
ecommerce site
E-commerce SEO
Shopify Flow
Automation
Artificial Intelligence
AI Chatbot
English
Shopify Partner
Online Store Creation
shopify store
Migration

Categories