Senior JavaScript developer from Nantes, France
Hi I'm Johan! [jo.an]
🍕 I like pizza and I develop strong websites and applications for good.
How can I help you?
Your project is unique. It deserves an attentive listening before rushing into it.
Website development
Investing into clean code is the best way to reduce time-to-market and maintenance costs. I use JavaScript, React and React Native with the mindset that my work must be reusable and create smooth experience for both users and developers.
Agile project management
From needs analysis to strategic advices, passing by writing functional or technical specifications. Agile methodologies and tools borrowed to Design Thinking are perfect to put your target in the center of the design process.
SEO optimization
Make your activity visible on the internet by building a website around SEO best practices. Because I search to be up to date with the latest innovations in this field, I am able to setup a SEO strategy to optimize your natural indexing.
JavaScript and ReactJS training
I believe that knowledge is a treasure that has to be distributed with the many. That's why I like to share my expertise, from the beginners who whant to learn coding basics, to the advanced levels thant need to setup architectural strategies in complex applications.
Testimonials
I highly recommend Johan. The commercial proposal was clear and the project was defined with accuracy. Communication was regular and Johan was attentive to the necessary changes throughout the project. Implementation was quick and efficient. An excellent performance in every aspect.
Jérôme Fouchard
Educational Manage, EFM
Recent blog posts
31 March 2023
Keep Storybook up to date over time with story-based testing
The new Play feature is the key to bring interactivity into your Storybook. Learn how to integrate it into your documentation and your testing scenarii
14 March 2023
Keep Storybook up to date over time with story-based testing
Like any business app, Storybook must be tested to avoid regressions. The CSF 2.0 format allows interfacing with Jest and Testing Library so that Stories become the entry point for the testing strategy, and component updates can be made with peace of mind.
7 March 2023
Display a component in a story and make its arguments editable on the fly
In this second article of the Storybook series, it's time to get your hands in the code to find out how to actually create a story using the CSF-2 standard and customize its parameters so that it can be used by all stakeholders of your organization.
☕️ Let's have coffee
If you're in Nantes, I would be happy to share a cup of coffee and talk about your project.
I can also work from anywhere and I would be pleased to develop your project even if we're not living in the same location.