Freelancer profile translated to English.
Back to original languageAbout Julien
đ Full Stack Developer | Web & Mobile | Deployment & QA Specialist
I am a Full Stack Developer, expert in web and mobile development, specializing in creating cross-platform applications and high-performance websites, with full deployment on the App Store, Play Store, and hosting solutions like OVH.
đĄ Skills
- Mobile Development : Flutter (iOS & Android)
- Web Development : HTML, CSS, JavaScript, Node.js, Python
- Backend & Cloud Services : Firebase, Cloud Functions
- API & Service Integration : Stripe, RevenueCat, Authentication, Mux, Algolia
- Automation & Scripting : workflow optimization
- Testing & QA : functional validation, bug fixing, UI/UX improvement
- Full Deployment : managing tester feedback, error resolution, validation on the App Store and Play Store
- Hosting & DNS Redirection : website deployment with OVH and other hosts
âš Advanced Features Integrated
- Social Networks : posts, user profiles, messaging, blocking and reporting
- Chat Systems : real-time messaging with push notifications
- Internationalization : global multilingual management
- Monetization & Payments : Stripe integration and subscriptions via RevenueCat
- Video Streaming & Media Management : Mux for smooth and optimized rendering
đŻ Why Choose Me?
- Complete Expertise : from development to production
- User Experience (UI/UX) : fluid and intuitive applications
- Post-Deployment Support & Follow-up : updates, fixes, and improvements
- App Store Compliance : fast validation and tester feedback management
đ© Have an ambitious web or mobile project? Contact me now
French
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- Kosmos DigitalDeveloper and QA ManagerDIGITAL AND ITNovember 2022 - November 2025 (3 years)Nice, FranceFull-stack developer responsible for the design and development of mobile and web applications. Complete management of the feature lifecycle: architecture, implementation, backend integration, and performance optimization.Concurrently, QA Manager: defining and driving the testing strategy, writing and automating scenarios, managing client feedback, prioritizing and tracking fixes. Managing deployment, ensuring deliverable reliability, and continuous improvement of processes to ensure a stable, high-quality user experience.
- Central PartsWeb DeveloperRETAIL (SMALL BUSINESS)March 2022 - April 2022 (1 month)OrlĂ©ans, FranceComplete creation of the design and development of the Central Parts website. Design of mockups and prototypes in Adobe XD, then integration on WordPress with theme customization and front-end development in HTML/CSS. Collaboration with the client to validate ergonomics, style, and functionalities, adjustments based on feedback, and optimization for a fluid and responsive user experience. Delivery of a functional, aesthetic website that meets client needs.đ central-parts.fr
- Strat & growthWeb DeveloperSOCIAL NETWORKSDecember 2021 - February 2022 (2 months)Tours, FranceDevelopment of a website from the mockup provided by the client. Transformation of designs into interactive and responsive interfaces, content integration, and implementation of requested functionalities. Close collaboration with the client to validate technical and aesthetic choices, adjustment of elements based on feedback, and delivery of a functional, optimized website that meets expectations. Monitoring of tests and fixes to ensure quality and compatibility across different browsers and devices.
Reviews
Pauline
GĂ©rante - Apeille
Reviewed on 11/29/2025
Very happy with our collaboration. Meticulous work, fluid communication, and an excellent understanding of my expectations. I recommend 100%!
Recommendations
BT
These freelancer profiles also match your criteria
Agatha Frydrych
Backend Java Software Engineer
4.7
(3)
2
Baptiste Duhen
Fullstack developer
4.6
(4)
5
Amed Hamou
Senior Lead Developer
4
(2)
7
Audrey Champion
Web developer
4.3
(3)
4