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Florian JousselinFJ

Florian Jousselin

🏅 Front-end Developer | Next.js Nextjs React.js

€600/day
14 projects
Paris, FR
8-15 years

Average response time: 12 hours

Freelancer profile translated to English.
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About Florian

Hello đź‘‹

I am a SeniorWeb Front-End Developerspecializing inNext.jsandReact.js**, an independent contractor and entrepreneur based in England. I transform ideas into performant, scalable, and modern web applications, leveraging the latest **Javascript/Typescripttechnologies.

🤖 Kalibur: I developed my own cybersecurity AI to multiply my productivity and depth in my pentests! (Pentests also available)

🚀 I have helped startups and large companies (healthcare, e-commerce, cybersecurity, services, social networks, etc.) design and deploy robustNext.js and Reactapplications, often managing the biggest technical challenges (scalability, SEO, performance, security).

âś… Available for freelance missions on Malt. I get 100% involved in every project and have received 5/5 star ratings from all my clients.

🎯 Projects :

Web Applications: Design and development of reliable and scalable web applications, precisely meeting user expectations with an intuitive and secure interface.

Showcase Websites: Development of modern and dynamic websites, designed to enhance the image of companies, creators, or independent workers.

E-Commerce: Creation of complete online stores, integrating product catalog management, secure payments, and custom functionalities.

⚙️ Stack :

▪️ Next.js / React.js / TypeScript (SSR, SSG, ISR)
▪️Tailwind CSS, Framer, UX/UI prototyping
▪️Firebase, Stripe, Node.js, GraphQL
▪️React Native & Expo (if mobile needed)

đź“© Contact :

➡️ Quick response in less than an hour.
➡️ Available 7 days a week via Malt messaging.

Contact me to find the best solutions for your projects together.
  • French

    Native or bilingual

  • English

    Fluent

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

Experience

  • Scapin Ltd
    Next.js, React.js, React Native Developer
    SOFTWARE PUBLISHING
    August 2025 - Today (10 months)
    Liverpool, United Kingdom
    I help companies design scalable and high-performance web and mobile applications using React.js, Next.js, React Native, TypeScript, Node.js, Firebase, GraphQL, and Framer. I combine technical expertise, UX/UI design, and best practices to deliver pixel-perfect, secure, and maintainable products.

    I have experience in supporting projects from concept to production. I work with startups and large companies in various sectors such as e-commerce, healthcare, cybersecurity, home services, and social networks, often tackling the most complex technical challenges.

    I offer more than just code: I design interfaces and prototypes, implement clean architectures, ensure security, and optimize performance, bringing real added value to your project.

    Keywords: Next.js, Nextjs, React, React.js, TypeScript, TailwindCSS, Firebase, Stripe, Web Apps.
    Next.js React.js Typescript Firebase
  • Beauty Pie
    Web Security Engineer
    E-COMMERCE
    November 2022 - August 2025 (2 years and 9 months)
    Londres, United Kingdom
    Beauty-pie is an e-commerce website (Next.js/React.js, Node.js, GraphQL, etc.) in the beauty industry. Creation and management of a new internal cybersecurity team. Implementation of training, log monitoring, third-party audits, incident logs, security on-calls, internal and external penetration testing, documentation, and guidelines for developers.

    Keywords: Next.js, Nextjs, React, React.js, TypeScript, TailwindCSS, Firebase, Node.js, GraphQL, Web Apps.
    Next.js React.js Node.js GraphQL Next.js Development
  • Beauty Pie
    Next.js, React.js Developer
    E-COMMERCE
    March 2021 - November 2022 (1 year and 8 months)
    London, United Kingdom
    Beauty-pie is an e-commerce website in the beauty industry. I initially joined the 'Customer Experience' team as a Full Stack Web and Back-end Developer. I worked on the redesign of the website in Next.js and the API in Node.js and GraphQL to improve user experience and conversion rates, which contributed to the company's $100 million Series B funding round.

    Keywords: Next.js, Nextjs, React, React.js, TypeScript, TailwindCSS, Firebase, Node.js, GraphQL, Web Apps.
    Next.js React.js Node.js GraphQL TailwindCSS

Reviews

5.0

Out of 14 ratings

ClémentC

Clément

BYCORP SAS

Reviewed on 3/11/2019

A big thank you to Florian for the work done! Despite the challenging circumstances of the project, Florian adapted by being proactive and extremely responsive. The application works perfectly, even exceeding expectations. I recommend him without hesitation!
ThierryT

Thierry

Thierry Templier

Reviewed on 2/16/2019

Florian has excellent expertise in React Native and Expo, which he effectively applied during the mission. He delivered a high-quality mobile application that met my requirements in terms of structure and functionality. Florian worked interactively throughout the mission to meet expectations. I highly recommend Florian for all your mobile application development needs.

Recommendations

FU
Guillaume GalasGG
Simon BohlSB
+6
Former user and 8 other people have recommended Florian

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Education

  • Master 2 of Information Technology
    EPITECH, Paris
    2017
  • Master 1 of Information Technology
    The College at Brockport State University (NY)
    2016

Certifications

  • Master 1 of Information Technology
    Epitech
    2016
    Mobile Applications Web Front-end Developer Typescript Front-End Development Mobile Application Development TailwindCSS React Native Next.js React Nextjs
  • Master 2 of Information Technology
    Epitech Paris
    2017
    Mobile Applications Web Front-end Developer Typescript Front-End Development Mobile Application Development TailwindCSS React Native Next.js React Nextjs

Skill set

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