Freelancer profile translated to English.
Back to original languageAbout Julien
Welcome to my profile 👋
Let me introduce myself: software engineer with 7 years of experience in web & mobile development, specialized in creating innovative applications, optimizing user journeys and integrating payment solutions.
⚙️ APPLICATION DEVELOPMENT ⚙️
Android mobile development (Kotlin, Jetpack Compose)
Web development (Angular, TypeScript)
Design and integration of REST APIs
Process automation & monitoring
Audit and optimization of user journeys
👨🏻💻 CREATION OF DIGITAL SOLUTIONS 👨🏻💻
Custom mobile & web applications
SaaS platforms & internal tools
Marketplace & transaction management
Application redesign and migration
Third-party integrations (payment, subscriptions, KYB/KYC)
✅ AVAILABLE FOR ✅
Android mobile & web development
Application redesign and optimization
Development of MVP and proof of concept
API and third-party services integrations
Team reinforcement (technical lead / hands-on dev)
🛠️ MY MAIN STACK 🛠️
Android · Kotlin · Jetpack Compose
Angular · TypeScript
Node.js · Express.js · MongoDB
Firebase · Docker · AWS · ElasticSearch
Specifically, how do I work? 👨💻
Meeting to frame your needs 📲
Quick and adapted proposals 📄
Agile and transparent development 💻
Continuous adjustments until final validation 📝
Looking forward to collaborating with you to transform your ideas into concrete solutions!
Feel free to contact me, I respond 7 days a week.
English
Fluent
French
Native or bilingual
Can work on-site
Genève (up to 50km)
Experience
- SMILE AND PAYAndroid developerBANKING AND INSURANCEApril 2021 - July 2025 (4 years and 3 months)Neuilly-sur-Seine, FranceSmile&Pay is a French fintech specializing in payment solutions (mobile, terminals, payments by link, Tap to Pay).It supports merchants and companies in managing, collecting and onboarding customers through high-performance mobile and web applications.My missions at Smile&Pay were:Supervision and organization of the mobile team.Mobile development (Android, Kotlin, Jetpack Compose): onboarding, dashboard, transaction history.Implementation of payment features (SoftPOS, terminals, payment link).Third-party integrations: Chargebee, GoCardless, Ondorse.Automation of onboarding and support via Make, Firebase, Jira and Slack.Deployment of applications on Google Play, Pax Store and Sunmi Store.Technical environment: Android, Kotlin, Jetpack Compose, Firebase, Angular, TypeScript, Docker, REST API.
- VallourecFullstack developerENERGY AND UTILITIESSeptember 2019 - March 2021 (1 year and 5 months)Boulogne-Billancourt, FranceVallourec is the world leader in premium tubular solutions for energy and industry.The company provides innovative and sustainable solutions to support the energy transition and major industrial projects around the world.My missions at Vallourec were:Development of the Digital Expertise Center (DEC): internal platform centralizing technical documentation, support and digital tools.Development of an industrial marketplace: product management, advanced search, orders and transaction tracking.Participation in technical choices and solution architecture.Implementation of AWS serverless technologies to improve scalability.Technical environment: Angular, Symfony, SQL, REST API, AWS, ElasticSearch.
- blueanchor.ioFullstack developerDIGITAL AND ITNovember 2018 - September 2019 (10 months)Paris, FranceBlueanchor.io is a web agency specializing in the development of custom web and mobile applications for a variety of clients ranging from education to internal business management.My missions at Blueanchor.io were:Development of an intranet for a crèche franchise: internal management, activity monitoring, communication.Development of an educational mobile application: interactive calendar, personalized reminders, subject management.Participation in technical design and architectural choices.Front-end implementation with Angular/Ionic and back-end with Node.js/MongoDB.Technical environment: Angular, TypeScript, Ionic, Node.js, MongoDB, REST API.
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Education
- Coding AcademyEpitech2018Développement Informatique Formation intensive de 5 mois (600 heures) aux principaux langages de programmation et de développement web FRONT END : Javascript, HTML5, CSS3, Angular, ReactJs/React Native BACK END: PHP, MySQL, Laravel, MVC, Symfony2, Node.js. Flask PROJETS REALISES : - Reproduction du site "Twitter" à l'aide du stack MEAN - Réalisation d’un site de rencontre en Flask/React - Développement du célèbre jeu "2048" en jQuery - Réalisation d'un site web en PHP et à l'aide du framework Laravel - Réalisation d'un site e-commerce en PHP