Freelancer profile translated to English.

Description

I'm Lucas — a solo full-stack developer who designs, codes, and deploys AI-first web applications for early-stage startup founders.

An MVP, a converting landing page, an internal automation — in weeks, not months.

What I do concretely → AI MVP Sprint: SaaS from 0 to production in 3-6 weeks → Landing That Converts: Marketing site that brings in leads in 5-15 days → AI Automation: Internal workflow, LLM integration, agents in 1-3 weeks → Daily rate for out-of-scope missions

Why solo, not an agency: A single person from brief to deployment. No project manager between you and the code. No runaway quotes. One Slack, one invoice, one product in production.

Tangible proof → SKEMA Consultoria Junior internal platform: 28,000+ lines, 30+ screens, 6 modules, RBAC, electronic signature, real-time messaging — shipped solo in 1 month, in production with 30 daily users.

→ B2B SaaS Donjean Dev: in production, recurring revenue.

Stack: Next.js · React · TypeScript · Node.js · PostgreSQL · Supabase · OpenAI · Anthropic · Vercel · CI/CD GitHub Actions

Modalities: EN · FR · PT for worldwide clients. Fixed fee recommended · daily rate possible. 50% deposit upon signing, balance upon delivery. Available immediately.

Languages

French
Native or bilingual
English
Native or bilingual

Workplace preferences

Remote only

Primarily works remotely

SKEMA Consultoria Junior
Lead Full-Stack Developer (Solo)
SOFTWARE PUBLISHING
January 2026 - Today (7 months)
Design and full-stack development of an operational management web platform for a team of 30 people.

- 28,000+ lines of code, 30+ screens, 6 business modules
- Solo architect: design, frontend, backend, database, deployment
- RBAC with 10 roles, audit trails, granular permissions
- Electronic signature, PDF generation, real-time messaging
- AI Integrations (OpenAI, Anthropic) for workflow automation
- CI/CD with GitHub Actions and Vercel deployments

Result: MVP in production in 1 month. Used daily by the full team. Continuous maintenance and iterations.

Stack: Next.js, React, TypeScript, Tailwind, Supabase (PostgreSQL), Vercel, OpenAI, Anthropic
Next.js Supabase React.js Typescript OpenAI
Donjean Dev (independent)
Founder & Full-Stack Developer
SOFTWARE PUBLISHING
May 2026 - Today (3 months)
Founder of a freelance business dedicated to early-stage SaaS startups.
Built a vertical B2B SaaS for Junior Enterprises in Brazil in parallel.

- Multi-tenant B2B SaaS in production
- Distribution through commercial partnership
- Recurring revenue
- Target market: 1,600 organizations in Brazil + EU expansion

Stack: Next.js, React, TypeScript, Supabase, OpenAI, Anthropic
Next.js Typescript Supabase OpenAI Anthropic
HENIN Group
Financial Analyst Intern
REAL ESTATE
January 2025 - December 2025 (11 months)
Orlando, United States
Financial modeling for US real estate projects (pro forma, IRR, NPV).
Comparative analysis of contractor bids. Work on HUD financing documentation.