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Lucas J
@lucas_jonatha
Senior App Developer
États-Unis
Anglais
À propos de moi
I'm a Senior App Developer specializing in building modern, scalable, and high-performing mobile applications. I develop cross-platform and native apps with a focus on clean user experiences, reliable backend systems, and secure data management. I handle complete applications from concept to deployment and maintenance.
Compétences
Lucas J
hors ligne •
Temps de réponse moyen de 1 heure
Voir mes services
Développement multiplateforme
I will do mobile app development ios app android app flutter app development
Applications Web Full stack
I will software development, front end backend developer, full stack developer
Expérience professionnelle
Senior App Developer
Upwork • Freelance
Jan 2022 - Present • 4 yrs 9 mos
Designed and developed modern Android and iOS applications for startups and businesses using Flutter and React Native. Built scalable backend systems with Node.js and Python, integrated third-party APIs like Stripe and Firebase, and managed PostgreSQL and MongoDB databases. Published and maintained applications on Google Play and Apple App Store while working directly with clients to meet business requirements.
Full Stack & Mobile Developer
Toptal • Freelance
Jun 2020 - Dec 2021 • 1 yr 6 mos
Developed mobile and web interfaces using Flutter, React Native, and TypeScript. Created backend APIs with Node.js and Python, optimized database queries, and integrated payment systems and authentication services. Converted Figma designs into functional interfaces and assisted businesses with application deployment, performance optimization, and technical support in a collaborative environment.
