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Romain ViolletRV

Romain Viollet

Senior Front-End Developer

€400/day
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Romain

Front-End Developer | +15 years of experience

I help companies build high-performing, well-indexed, and properly tracked web interfaces.

What I can do specifically:

1. Front-end Development

- Development of responsive web interfaces (Websites, web applications, landing pages)
- Landing pages created with a CRO approach
- Development in the form of reusable components
- Performance optimization (lazy loading, compression...)
- Integration compliant with accessibility standards (RGAA / WCAG)
- Possible integration via WordPress or Webflow CMS
- Implementation of simple or complex JavaScript interactions
- Implementation of JS libraries if necessary (GreenSock, D3.js…)

Technical Stack: HTML5, CSS3, SASS, JavaScript (Vanilla / jQuery), Tailwind, Bootstrap, Twig, JSON, Figma, Photoshop

Goal: robust code, fast-loading pages, engaged users.

2. Natural Referencing (GEO / SEO)

- SEO compliance audit execution
- Technical analysis (indexing, structure, performance…)
- Semantic audit
- Content, netlinking, internal linking
- SEO compliance implementation (HTML structure, URL Rewriting, 301 redirects…)
- GEO (Generative Engine Optimization): optimization of visibility in generative engines (ChatGPT, Perplexity, Gemini…)

Stack & Tools: Google Search Console, Google Analytics, Screaming Frog, Semrush / Ahrefs

Goal: more qualified traffic, better visibility on Google and in AIs.

3. Tracking

- Design, write, and maintain tagging plans
- Ensure the quality, consistency, and reliability of collected data
- Implement tracking devices via Tag Management tools

Stack & Tools: Google Analytics / GA4, GTM, Tag Commander

Goal: a clear tagging plan, rigorous implementation, and dashboards that reflect reality.

Feel free to contact me.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Crédit Mutuel
    Front-End Web Developer
    BANKING AND INSURANCE
    December 2023 - November 2025 (1 year and 11 months)
    Paris, France
    Involved in the redesign of Crédit Mutuel and CIC websites, I contributed to the migration of content to a proprietary CMS with accessibility and security as non-negotiable requirements.

    • Migration and integration of content from an old WordPress
    • Testing, bug reporting, and validation of the new CMS
    • Guardian of the three environments: test, acceptance, and production for the pages under management
    • Complete management of desktop and mobile URLs (creation, deletion, 301, 404)
    • Application of SEO best practices and accessibility standards across the entire managed scope
    • Administration of configuration files and production variables
    • Design and development of custom JavaScript components

    Complete creation of a React JS web application to facilitate the creation of email templates for the marketing team

    • Integration of a drag & drop system for intuitive template building, allowing users to assemble email blocks without technical skills
    • Implementation of real-time template preview, ensuring faithful rendering before campaign dispatch
    • Reusable components
    • Modular architecture

    Technical Stack: HTML5, CSS3, React JS, JSON
    SEO HTML5/CSS3 JavaScript Accessibility Web Integration
  • Clarins
    E-Commerce Technical Support Specialist
    FASHION AND COSMETICS
    March 2023 - November 2023 (8 months)
    Neuilly-sur-Seine, France
    1. Corrective & Evolutionary Maintenance on Salesforce Commerce Cloud (32 sites)

    • Analysis and resolution of functional and technical anomalies on storefronts (display, navigation, search, purchase funnel)
    • Diagnosis of malfunctions related to promotional campaigns (pricing rules, promo codes, automatic discounts)
    • Monitoring and maintenance of inbound and outbound data flows (product catalogs, inventory, orders) via SFTP and XML
    • Management and configuration of third-party integrations (payment solutions, CRM, marketing tools)
    • Administration of user access and roles on Business Manager (SFCC)
    • Quality control of deployments in staging environment before production
    • Monitoring storefront performance and reporting anomalies impacting user experience
    • Coordination with product, development, and business teams for incident prioritization and resolution
    • Writing and updating technical documentation (procedures, runbooks, troubleshooting guides)
    • Monitoring SFCC platform updates and anticipating impacts on production storefronts

    2. Tracking

    • Implementation of marketing tags in JavaScript via Tag Commander (TikTok, Facebook Pixel, Google Analytics…)
    • Post-deployment tag monitoring and verification (collection control, anomaly detection, and corrections…)
    • Design and maintenance of the tagging plan from an existing data layer
    • Management of user consent and GDPR compliance via Didomi (configuration of collection rules by market)
    • Synchronization and management of product feeds to comparison sites and marketplaces via Lengow

    Prioritization and ticket tracking via JIRA (qualification, escalation, resolution)

    Technical and functional environment: Salesforce Commerce Cloud, Tag Commander, Didomi, Lengow, GA4, XML, JS
    Salesforce Commerce Cloud E-commerce JavaScript XML
  • Yves-Rocher
    E-Commerce Web Developer
    FASHION AND COSMETICS
    July 2022 - October 2022 (3 months)
    Issy-les-Moulineaux, France
    As part of the Yves Rocher digital team, I was responsible for the integration and maintenance of e-commerce pages on the Hybris CMS, in a multilingual and multi-market environment.
    • Creation and integration of landing pages and product category pages via the Hybris CMS
    • CMS Administration: content updates (prices, descriptions, images) and deployment to production
    • Faithful integration of mockups from Figma, respecting SEO standards (semantics, WebPerf, accessibility, responsive design)
    • Development of interactive components in Vanilla JavaScript (carousel, counter, modal...)

    Technical Stack: HTML5, CSS3, JavaScript (Vanilla)
    HTML5/CSS3 SEO Webperformance Accessibility JavaScript

Recommendations

Hassan H.HH
Emmanuel BismuthEB
Hassan H. and 1 other person have recommended Romain

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Education

  • BTS
    ESIC
    2009
    Développement

Skill set

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