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Kevin JollisKJ

Kevin Jollis

Web Developer | Next.js | React.js | TypeScript

€450/day
Paris, FR
3-7 years

Average response time: 1 hour

Freelancer profile translated to English.
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About Kevin

Do you have an idea, a business need, a digital project…

but above all, are you looking for a reliable partner who masters their subject 📐, with whom you can move forward with peace of mind in the medium or long term.

Someone who understands your needs, thinks with you, and builds precise tools designed to evolve.

Let's discuss, let's decide, let's move forward.

◉ My Role

I design and develop custom applications 📏 for freelancers and companies that want reliable, clear tools adapted to their real-world situation.

My goal is simple:

Create solutions that save time, reduce friction, and help make better decisions.

I don't just "code".

I think with you about the product, its usage, and its business impact.

◉ What I do concretely

✓ Web and mobile business applications, designed to last
✓ Redesign, improvement, and maintenance of existing tools (bug fixing, feature addition, performance, stability, clarity)
✓ Dashboards to track the essentials, in real-time
✓ Automations and integrations to eliminate unnecessary tasks
✓ Pragmatically integrated AI, when it makes sense

◉ My Way of Working

I work as a partner, not just an executor.

I integrate easily into a team, communicate clearly, and take responsibility.

I ask questions, I challenge, I explain.

I place great value on exchange, understanding the need, and making sound decisions, even if it means doing less, but better.

◉ In short

- You're starting from scratch or your tool is showing its limits
- You want custom-made, not a generic solution
- You're looking for someone reliable, involved, and results-oriented

We should probably talk (replies within a few hours max)
  • French

    Native or bilingual

Can work on-site
Paris (up to 50km), Bordeaux (up to 50km), Lyon (up to 50km), Marseille (up to 50km), Lille (up to 50km)

Experience

  • Stockit AI
    Front-end Web Developer Next.js | React | TypeScript
    DIGITAL AND IT
    September 2025 - Today (9 months)
    Bordeaux, France
    Mission Objective :

    Develop a complete SaaS tool to centralize user resources, integrate AI-assisted search, and improve management through an interactive dashboard.

    Achievements :

    Designed a modern dashboard in React and Tailwind, offering a fluid user experience, better visibility, and precise statistics tracking.

    Implemented Next.js and TypeScript with secure JWT authentication, ensuring data reliability and long-term scalability.

    Integrated AI-assisted search and a personalized daily space, leading to time savings and increased user productivity.

    Technical Stack :

    Next.js, React, TypeScript, Tailwind
    Web Development Web Developer Front-End Development React.js Next.js
  • LampAI
    Front-end Web Developer Next.js | React | TypeScript
    DIGITAL AND IT
    August 2025 - September 2025 (1 month)
    Bordeaux, France
    Mission Objective :

    Create a modern agency website with integrated AI chat to enhance brand image and visitor interaction.

    Achievements :

    Developed an elegant interface in React and Tailwind, offering an immersive user experience and enhanced perceived quality.

    Implemented Next.js and TypeScript to ensure optimal performance, effective SEO, and sustainable scalability.

    Integrated an interactive AI chat, saving time in customer support and increasing visibility through innovation.

    Technical Stack :

    Next.js, React, TypeScript, Tailwind
    Web Developer Front-End Development React.js React Developer Next.js
  • Net Expertise
    Front-end Web Developer Next.js | React | TypeScript
    DIGITAL AND IT
    March 2025 - June 2025 (3 months)
    Bordeaux, France
    Mission Objective :
    Develop the showcase website for an agency to strengthen its brand image and optimize its online visibility.

    Achievements :

    Designed a modern interface in React and Tailwind, offering a fluid user experience and enhanced perceived quality.

    Implemented Next.js and TypeScript to ensure optimal performance, improved SEO, and sustainable scalability.

    Developed reusable components to accelerate time-to-market and ensure time savings in maintenance.

    Technical Stack :

    Next.js, React, TypeScript, Tailwind
    Web Developer Front-End Development Next.js React.js TypeScript

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Education

  • DEUST Webmaster and Internet Professions
    University of Limoges
    2022
    Apprentissage des langages du web et de la programmation. Conception et développement de sites et d’applications web modernes et performants.

Skill set

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