Freelancer profile translated to English.
Back to original languageAbout Lorenzo
ReactNative Mobile Developer – iOS & Android
Looking to develop or improve a mobile application, but worried about delays, bugs, or an incomplete experience? I design and deliver high-performance ReactNative applications, available on iOS and Android, with on-time delivery and a clear approach using Expo.
I am a mobile developer with 7 years of experience, then founder and CTO of two startups. This dual role allows me to combine solid technical expertise with a business vision. I am accustomed to transforming an idea into a concrete product, prioritizing key features, and delivering reliable applications in demanding environments.
Throughout my projects, I have developed:
Consumer iOS/Android applications with ReactNative and Expo.
Native integrations (push, camera, geolocation).
Connections to REST/GraphQL backends and third-party services (payment, auth, analytics).
Refactoring of existing projects to stabilize and optimize their performance.
My goal is to deliver a turnkey, stable, maintainable application designed to evolve with your business. The delivered code is clean, documented, and structured to facilitate your future developments.
In terms of tools, I use ReactNative, Expo, TypeScript, and I rely on best practices (testing, CI/CD, monitoring). Accustomed to working with startups as well as product teams, I can also help you frame your technical choices and roadmap.
I offer an initial video call to clarify your needs and define a realistic schedule together. I respond within the day and can start quickly.
French
Native or bilingual
English
Fluent
Can work on-site
Paris (up to 50km), Lyon (up to 50km), Bordeaux (up to 50km), Lille (up to 50km), Marseille (up to 50km)
Experience
- Resiliermonbail.frCTO & Co-founderREAL ESTATEMarch 2025 - Today (1 year and 5 months)Amiens, France→ Mission Objective:Co-found and develop an innovative web application allowing tenants to terminate their leases online, quickly and securely.→ Achievements:Design and launch of resiliermonbail.fr, a digital solution simplifying lease termination in 1 click, with a fluid user journey and strong perceived value.Integration of online payment systems (Stripe) and AR24 registered mail, ensuring reliability, legal compliance, and time savings for tenants.Technical leadership as CTO & co-founder, ensuring the scalability and performance of the platform from its launch.→ Technical Stack:React.js, AdonisJS, Stripe, AR24
- FidelizCTO & Co-founderTECHJune 2024 - Today (2 years and 2 months)Amiens, France→ Mission Objective:Design and launch a B2B2C referral startup, with a mobile application and a SaaS dashboard to manage campaigns, billing, and acquisition.→ Achievements:Development of an iOS & Android mobile application in ReactNative, allowing customers to refer in-store and increasing brand visibility.Creation of a SaaS dashboard in React/AdonisJS with automated invoicing, SMS/email/push campaign management, generating time savings and better marketing performance.Implementation of the complete architecture (app, dashboard, landing page, acquisition process), ensuring scalability, efficiency, and perceived quality by partners.→ Technical Stack:React Native, Expo, EAS, React.js, AdonisJS, Firebase, Twilio
- PMUFull-stack developerENTERTAINMENT AND LEISUREMarch 2023 - May 2025 (2 years and 2 months)Paris, France→ Mission Objective:Develop and optimize strategic mobile applications for PMU partners in points of sale and for online betting.→ Achievements:Creation of the PMU&Nous application in ReactNative (iOS & Android), used by 15k partners, facilitating accounting management, orders, and access to performance statistics.Contribution to the PMU.fr application, optimizing the mobile betting experience for thousands of users, with a fluid and high-performance journey.Integration of reporting features and accounting data extraction, providing significant time savings and better perceived quality for points of sale.→ Technical Stack:React Native, React Native Web, Bitrise
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Education
- Computer Science DegreeUPJV2018