Matheus Barbosa
Full Stack Developer & AI Engineer — 9+ years
Professional Summary
Full stack developer with 9+ years of experience building end-to-end web and mobile applications. Physics background supports a structured approach to architecture and complex problems. Delivered high-impact systems — including a homecare platform that reduced medication loss by 98% and government-integrated occupational safety products used across Brazil. Today focused on modern SaaS, AI-assisted automation, and production-grade infrastructure.
Professional Experience
Full Stack Developer
NGTec Soluções em Tecnologia
- —Homecare business system (2017–2019): stock & barcode workflow with ~98% medication loss reduction; patient internment; medication tracking app; financial module; field mobile app — still operational
- —Occupational health & safety platform (2019–2024): e-Social (S-2210, S-2220, S-2240), CIPA, medical exams (ASO), PGR/PCMSO, PPE, incident reporting (CAT), dashboards — used by multiple companies in Brazil
- —Online course platform & e-commerce (2021–2024): LMS with streaming, PIX/card/boleto payments, certificates, student admin — integrated with the safety ecosystem
- —Architected SaaS-style products with long-running production deployments
Full Stack Developer & AI Engineer
Independent practice
- —E-commerce platform (2024): end-to-end build for a client organization
- —Real-time auction app (2024): live bidding with WebSockets for a football club fundraising event — auth, payments, organizer dashboard
- —AI & automation: WhatsApp Business flows, customer service and sales automation with OpenAI / LangChain
- —Websites & product UI: Next.js, performance, SEO, and modern UX (including this portfolio)
- —CRM & WhatsApp platform (in development): AI chatbot builder, conversation flows, client management
Key Achievements
98%
Reduction in medication loss (homecare system)
50+
Projects across healthcare, compliance, e-commerce, and events
9+
Years of professional development experience
100%
Major NGTec-era builds still operational
Full
e-Social integration (S-2210, S-2220, S-2240)
End-to-end
Build, deploy, security, observability, and handover
Technical Skills
frontend
backend
mobile
database
devops
ai
Infrastructure & Security
Deployment lifecycle: server setup, CI/CD, production releases, SSL, firewalls, authentication, rate limiting, sanitization, error tracking, uptime monitoring, VPS administration, backups, and scaling strategies.
Education
B.Sc. Computer Science
UDESC — Santa Catarina State University
Algorithms, Data Structures, Software Engineering, Artificial Intelligence, Database Systems
B.Sc. Physics
UNIFEI — Federal University of Itajubá
Classical Mechanics, Quantum Mechanics, Computational Physics, Electromagnetism