Freelancer profile translated to English.
Back to original languageAbout Leonardo
I design custom business web applications and management tools for companies: modern interfaces in React / Next.js, solid back-end, deployment included.
My goal is simple: to transform a tedious process or an idea into a reliable tool that your teams actually use daily.
What sets me apart: a real ERP background. I work on ERPs in production. I don't just code an interface; I understand your business flows, your data constraints, and what makes a tool robust over time.
What I deliver:
Custom web and SaaS applications (management, tracking, dashboards). Internal tools that automate your multi-step processes. AI integration into your tools (content generation, agents, task automation). APIs and integrations with your existing systems.
My stack: React, Next.js, TypeScript on the front end. Node.js, Python (FastAPI, Django), and PostgreSQL on the back end. Docker and CI/CD for clean deployment. I work with tested and documented code: my flagship project, a micro-services platform with AI workers, runs with over 800 automated tests.
My guarantees: clean and tested code, clear communication, on-time delivery, and post-delivery support. I integrate AI tools into my workflow to deliver faster without sacrificing quality.
Have a process to automate, a business tool to build, or AI to integrate? Describe your needs, and I'll respond with a concrete approach.
Portuguese
Native or bilingual
French
Native or bilingual
English
Fluent
Spanish
Basic
Remote only
Primarily works remotely
Experience
- Code Content TechnologiesDeveloper - Newscard, AI PlatformTELECOMMUNICATIONSDecember 2025 - July 2026 (7 months)Châtenay-Malabry, FranceWeb platform in production that automates a complete workflow: automated supplier search and contact, followed by AI-assisted content generation.I developed the interfaces, the back-office, and the automation features, on a micro-services architecture: React/TypeScript, FastAPI/Python, AI workers, PostgreSQL, Docker. Over 800 automated tests.Online at app.newscard.media.
- Julien Sere EIDeveloper - Reserboo Management SaaSSOFTWARE PUBLISHINGMay 2025 - Today (1 year and 3 months)Toulouse, FranceReserboo is a service management SaaS for freelancers and SMEs: bookings, online payments, centralized client management.I designed and developed several key features, both on the interface and server sides, within an agile team. Application deployed with Docker.Online at reserboo.fr.
- LA POSTE GROUPEApprenticeship Developer & IT SupportTELECOMMUNICATIONSOctober 2024 - Today (1 year and 10 months)Toulouse, FranceDual role within the La Poste group: developing internal tools for my support team and supporting Smartéo terminals.I designed custom tools to automate recurring team tasks and reduce time spent on manual operations.Enrichment of the technical knowledge base and resolution of user tickets.
Recommendations
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
Education
- Apprenticeship Master's Degree in Software EngineeringInstitut Mines-Télécom AtlantiqueFormation d'ingénieur logiciel en alternance (rythme apprentissage). Cursus articulé autour du développement logiciel, de l'architecture, de la gestion de projet et des méthodes agiles, avec une expérience en entreprise sur un ERP industriel. Inclut une période à l'international pour renforcer le volet ingénierie et anglais.
- Apprenticeship University Diploma in Technology (BUT) in Computer ScienceIUT de Blagnac2026Formation axée sur le développement logiciel : conception d'applications web full-stack, algorithmique, bases de données et méthodes agiles. Nombreux projets en équipe menés de bout en bout, de l'analyse du besoin au déploiement, avec une vraie culture du code propre et testé. Formation suivie en alternance chez le Groupe La Poste.