About Leandro
Web Developer | Next.js | React.js | Typescript
Are you a non-tech founder looking to launch or scale your SaaS? Whether you're starting from a Lovable, a no-code solution, or an MVP that's starting to show its limits, I step in to take over an existing base or develop a new version with a modern stack in Next.js, Sanity, React.js, and Typescript.
The goal: transform your idea or your MVP into a reliable SaaS ready for growth.
With several years of experience, I have worked on various projects helping them to scale
→ Stratéclosia: Website & digital platform development for a consulting firm.
→ Envol: Custom web platform for business operations and internal workflow management.
→ ASR Temp: SaaS platform for interim staffing agencies (missions, candidates, contracts, and operations centralization).
→ Indemnisation.com: Platform improvements and technical development for compensation and claims management
→ Wever: Development and optimization of mobility SaaS platform (mapping, data visualization, admin tools)
These experiences have allowed me to adapt quickly, understand business challenges, and deliver robust web products.
I now support non-tech founders in creating or redesigning their SaaS:
→ **BullGPT**: AI-assisted trading and analysis SaaS — V2 integration, design system, and internationalization for the US market.
→ **DigitalCreator**: AI content creation SaaS for influencers — Fish Audio, HeyGen, Submagic integrations on Next.js / Prisma / NeonDB stack.
→ SaaS from A to Z (MVP → production)
→ Custom dashboards and back-offices
→ Migration from no-code to a real web app
→ API integrations and automations
→ Payment systems, authentication, and multi-tenancy
Tech Stack: Next.js, Sanity, React.js, Typescript, Tailwind CSS, Shadcn UI, Prisma, Supabase, PostgreSQL, Stripe, Docker, Vercel
French
Native or bilingual
English
Native or bilingual
Portuguese
Native or bilingual
Spanish
Native or bilingual
Italian
Fluent
Can work on-site
Paris (up to 50km), Marseille (up to 10km), Nice (up to 10km), Bordeaux (up to 10km), Biarritz (up to 10km)
Experience
- ASR-TEMPLead Developer / SaaS ArchitectHUMAN RESOURCESDecember 2025 - Today (6 months)Aix-en-Provence, FranceDesign and development of a custom SaaS platform for interim staffing agencies.The system centralizes the full operational workflow: job missions, candidate management, client companies, contracts, and timesheets.Built a multi-role architecture (agency, staff, clients, workers) with dedicated dashboards and permissions.Implemented scalable backend logic, API integrations, and a headless CMS for content management.Focus on performance, UX optimization, and automation of repetitive processes to improve operational efficiency and reduce manual workload.
- StratéclosiaCréation du site internetSOFTWARE PUBLISHINGJuly 2025 - August 2025 (1 month)Marseille, FranceDéveloppement du site vitrine de Strat Éclosia, cabinet de conseil en stratégie. Réalisation fullstack avec Next.js, TypeScript, Sanity CMS et TailwindCSS. Mise en place d’un design moderne et responsive, intégration d’une charte graphique personnalisée, optimisation SEO (sitemap, indexation Google) et déploiement sur Vercel.
- Le Wagon MarseilleAssistant TeacherTECHApril 2022 - Today (4 years and 2 months)Marseille, FranceEn tant qu’Assistant Teacher au Wagon Marseille, j’ai travaillé main dans la main avec les professeurs pour accompagner les étudiants dans le module Front-end (JavaScript). Mon rôle consistait à répondre à leurs questions, les aider à résoudre des problèmes techniques et m’assurer qu’ils progressaient de la meilleure façon possible.
Recommendations
PF
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Education
- Web developeur FullstackLe Wagon2022BackEnd = Ruby / Ruby on Rails DataBase = postgresq / Sql FrontEnd = Html / Css / JavaScrypt / Figma / Bootstrap Git | GitHub