Freelance - Contractor

Senior Fullstack Javascript Developer

Hi! My name is Julien. I join your teams to make your projects alive with Javascript stack.

16 years of xp

I have contributed to the products of startups and large accounts, both in small teams and in squads of 12 people.

Fullstack Javascript

I master the Javascript stack in front, back and mobile with a very good knowledge of its ecosystem.

I've got your back

I am invested in my missions and I am at the side of your teams at every stage of your projects.

Senior JS engineer

I have the constant goal of pushing code boundaries and maintaining a high standard for code quality to provide users awesome experience. I work with various startups and clients on web and mobile projects since more than 16 years.

My favorite tools:

ReactReact NativeNodeJS
Typescript
NextJS
Gatsby
CRA
Craco
ExpoJS
Express
Koa
Redux
Hooks
Firebase
Verdaccio
Lerna
GraphQl
EsLint
CommitLint
Husky
Jest
Storybook
Cypress
Detox
Agile
TDD

Latest missions as a freelancer

  1. A multi website factory for books editors

    Since October 2021

    Hachette manages web exposure of many books editors. All the websites are built thanks to a mutual common stack: a backend under Drupal, a NextJS frontend with customization to respect their own visual identity and some specific features.

    • Code migration according to the clean architecture
    • Switching to Typescript, migration of dependencies (Nextjs)
    • Optimisation of the SSG build
    • Creating a preview environment for content publishers
    • Sites: JC Lattès, Marabout, Audiolib and many more
    • migrate some Drupal API call by Elasticsearch call to improve performance on huge websites (more then 300.000 produts to show on the website)
    NextJS
    Typescript
    SSG/ISR
    React
    Nx
    Clean architecture
    Elastic search
  2. White label TV app for mobile & tablet

    20201 year and 2 months

    IFeelSmart wants to move from a POC to a production VOD/streaming mobile app. This will be a white labeled international app for different TV operators from Israel to USA. My main achievements :

    • Set up the stack: code architecture, dev tooling (linters, unit and e2e tests, ...), code imrpovement and performance, npm packages creation after setup a Verdaccio server...
    • Stack development: theme system, hot rtl/ltr switch, export of the business logic in a npm package...
    • Add features: app screens, a custom chromecast player, Firebase loggin and crash reporting...
    • Staffing: 2 junior developers and 2 freelances
    React Native
    Firebase
    Redux
    Chromecast
    Verdaccio
    Lerna
    Typescript
  3. User journey for driving exam subscribtion

    20198 mois
  4. Multi provider authentification for freelancers

    20188 mois
  5. More missions and details on my Linkedin profle

Testimonials

References of some pairs / customers I worked with. Via LinkedIn :

Guillaume Scandola
Guillaume Scandola
Lead developer
Julien is a very good collaborator who can be counted on in all circumstances. Open to dialogue, full of good ideas and very competent. His range of knowledge is a real plus for creating or improving a project.
Kevin Nkonda
Kevin Nkonda
Mobile developer
Julien is an authentic problem solver, very pragmatic and the best at coming up with solutions that are creative and respect the industry best practices.
Cyril Francesconi
Cyril Francesconi
Fullstack web engineer
Julien is a really good web developer [...] He always amazed me by his motivation to continuously learn more and try new things (with success!). He is the kind of person who not only propose ideas but mainly make them come true!
© 2020-2024 Devpulsion