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Kevin TessierKT

Kevin Tessier

Supermalter

Fullstack Developer | RGAA | IA Integration

€550/day
8 projects
Paris, FR
8-15 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Kevin

Do you have a web project with accessibility requirements or AI features to integrate?

Fullstack developer RGAA certified (2026), I develop websites and web applications offering sustainable and scalable solutions.

**What sets me apart**:
  • A recentRGAA certificationto meet new legal obligations
  • Integration ofAI featuresthat transform the user experience: where a classic application responds to specific actions, an LLM (OpenAI / Claude) opens up a much wider range of possibilities.
  • A focus onUI/UX
These three areas of expertise share the same goal: ensuring that every user finds what they need, whoever they are.

With over 10 years of experience in web development, I have supported both non-technical founders on their first projects and established product teams on complex applications.

**Stack**: Symfony, Vue.js, React, WordPress
  • French

    Native or bilingual

  • English

    Fluent

  • Spanish

    Basic

Can work on-site
Paris (up to 50km), Rouen (up to 50km), Le Havre (up to 50km)

Experience

  • Observatoire des médias sur l'écologie
    Web Developer
    CIVIC AND SOCIAL ORGANIZATIONS
    March 2026 - March 2026
    Paris, France
    Mission
    Conception and development of a showcase website for the Media Observatory on Ecology, a platform dedicated to the analysis and visualization of media data related to ecology.

    Objective
    ✅ Provide a smoother and more efficient experience.

    Actions & Achievements
    Modern technical architecture
    Implementation of a professional WordPress foundation with Bedrock (dependency management via Composer) and the Sage theme (Laravel Blade templating).

    Custom Gutenberg Blocks
    Dynamic hero, methodology, expert committee, FAQ, video block, keyword search, data overview with integration of data visualization iframes.

    Applied eco-design
    Advanced asset optimization (Terser minification, tree-shaking, Tailwind CSS purge), native lazy loading, automatic WebP/AVIF generation, GZIP compression, advanced cache policy
    Showcase Website Wordpress TailwindCSS Eco-design
  • Les pépites du 19e
    Web Developer
    ENTERTAINMENT AND LEISURE
    January 2026 - January 2026
    Paris, France
    Mission
    Redesign and development of a media website specializing in the 19th arrondissement of Paris.

    Objective
    ✅ Provide a working platform for administration.
    ✅ Create a simple and efficient user experience.
    ✅ SEO Improvement.

    Actions & Achievements
    ✨ Modern technical architecture
    Implementation of a professional WordPress foundation with Bedrock (dependency management via Composer) and the Sage theme (Laravel Blade templating).
    ✨ Custom Gutenberg Blocks
    Wordpress SEO Optimization Gutenberg
  • Patrimoffice
    Web Developer
    CONSULTING AND AUDITS
    March 2025 - Today (1 year and 5 months)
    Paris, France
    **Mission**:

    Evolution and maintenance of a SaaS platform for investment placement management in the wealth management sector.

    Actions & Achievements:
    ✅ Evolution of two complementary interfaces: client area for performance tracking and financial advisor interface for administrative management
    ✅ Creation of interactive dashboards for visualizing investment performance
    ✅ Development of reporting and data export features to facilitate client monitoring
    ✅ Optimization of the user experience on both platforms for intuitive navigation
    ✅ Technical consulting and architectural choices to ensure product scalability
    ✅ Comprehensive technical and user documentation to facilitate onboarding and maintenance

    Technologies used:
    🛠️ Symfony, Vuejs, Python, DDev

    Results:
    ✨ High-performance platform allowing clients to track their investments autonomously
    📊 Improved advisor productivity thanks to the centralized financial advisor interface
    🔒 Enhanced security with fine-grained access and sensitive data management
    📈 Continuous product evolution with regular addition of new features
    💼 Client satisfaction with tailor-made technical support
    Vue.js Python Amazon Web Services User Experience Design Laravel

Reviews

5.0

Out of 1 rating

N

Nicolas

Patrimoffice

Reviewed on 10/15/2025

- Kevin has a very good command of Symfony and Vue.js. He is very pleasant and efficient to work with. He became deeply involved in understanding our business and was proactive in proposing solutions and meeting deadlines. We recommend him.

Recommendations

AJ
FU
Alexandre Jarry and 1 other person have recommended Kevin

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Education

  • DNSEP, Design graphique
    École Supérieure d'Art et de Design du Havre
    2016
    DNSEP, Design graphique

Certifications

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