João Paulo Pessoa — Full Stack Software Engineer
+4 years developing projects, architecting scalable solutions and delivering end-to-end products. Based in São Paulo, Brazil. Available for remote work worldwide.
About Me
With over 4 years of experience in software development, I have worked both in multidisciplinary teams and as the sole engineer responsible for complete products. My focus is on building scalable applications with clean code, solid architecture, and excellent user experience. I believe good software solves real problems elegantly.
Specialized in React, Next.js, TypeScript, and Node.js, with experience in cloud computing (AWS), DevOps, and agile methodologies. Since 2020, I have delivered measurable results: a 50% reduction in page load time at A3 Media and an 80% cost reduction on Google Maps API at BWS IoT.
- Full Stack: Complete mastery of the development cycle, from backend to frontend.
- Architecture: Design of scalable and maintainable systems.
- Performance: Application optimization for maximum speed and efficiency.
- Collaboration: Experience in multidisciplinary teams and high-complexity projects.
Professional Experience
Founder & Full Stack Engineer — Own SaaS Projects (2026 – Present, Remote)
- Leading SaaS product development from zero to market
- Architecture of scalable systems focused on automation and AI integrations
- Full-stack development with AI and WhatsApp integrations
- Complete product lifecycle management: ideation, development, and go-to-market
Senior Software Engineer — OT3N Brazil (2024 – Dec 2025, Brasília)
- Technical development on highly complex projects
- Development of analytical dashboards with React and TypeScript
- Architecture of scalable cloud solutions on AWS
- Mentoring junior and mid-level developers
Software Engineer — A3 Media (2023 – 2024, Barueri)
- Full-stack development of media platforms
- Implementation of payment systems with Stripe
- Performance optimization reducing page load time by 50%
- Integration with third-party APIs and cloud services
Frontend Engineer — BWS IoT (2020 – 2023, Barueri)
- Development of IoT dashboards with real-time updates via WebSocket and MQTT
- 80% cost reduction on Google Maps API through smart caching and optimization
- Implementation of responsive and accessible interfaces
- Integration with MQTT and WebSocket real-time protocols
Selected Projects
Prosperia — Financial Consulting SaaS
Platform integrating financial consulting, AI via WhatsApp, and continuous education in a unique financial transformation ecosystem. Built with React, Node.js, and AI integrations.
CategorizAI — AI Finance Automation
AI-powered tool that categorizes personal finances and delivers intelligent insights to help users understand and manage their money more effectively.
Poraneo Studio — Premium Digital Experience
Landing page for a studio combining architecture, furniture, and museography, translating visual identity and concept into a clear and elegant digital experience.
Contexto Marcenaria — High-Conversion Landing Page
High-conversion landing page for a conceptual woodworking company, optimized for lead capture and premium service presentation.
Frequently Asked Questions
What technologies does João Paulo Pessoa specialize in?
João Paulo Pessoa specializes in full-stack development with 4+ years of hands-on experience. His core stack includes:
- React & Next.js — modern, performant frontends
- TypeScript & Node.js — type-safe, scalable backends
- AWS, Docker & CI/CD — cloud infrastructure and DevOps
- PostgreSQL & Firebase — relational and real-time databases
- REST & GraphQL APIs — third-party service integrations
Is João Paulo Pessoa available for freelance or remote work?
Yes — João Paulo Pessoa is currently open to new projects, remote opportunities, and strategic partnerships worldwide. He adapts to your timezone and workflow.
How many years of experience does João Paulo Pessoa have?
Over 4 years of professional software engineering experience since 2020. Key milestones include:
- 50% reduction in page load time at A3 Media (2023–2024)
- 80% cost reduction on Google Maps API at BWS IoT (2020–2023)
- Senior Engineer role leading high-complexity projects at OT3N Brazil (2024–2025)
- Founder building AI-integrated SaaS products from 0 to market (2026–present)
What types of projects has João Paulo Pessoa delivered?
João Paulo Pessoa has built a wide range of products across industries, including:
- SaaS platforms with AI and WhatsApp integrations
- IoT dashboards with real-time WebSocket and MQTT updates
- Financial platforms with Stripe payment systems
- High-conversion landing pages optimized for lead capture
- Analytical dashboards with React and TypeScript
How can I contact João Paulo Pessoa?
You can reach João Paulo Pessoa via email at joaoppessoa719@gmail.com, through LinkedIn at linkedin.com/in/jppessoa, or on WhatsApp at +55 11 99240-0586. He typically responds within 24 hours.
Contact
João Paulo Pessoa is available for new projects, remote work, and partnerships worldwide.
- Email: joaoppessoa719@gmail.com
- LinkedIn: linkedin.com/in/jppessoa
- GitHub: github.com/johnnydev0
- WhatsApp: +55 11 99240-0586
- Location: São Paulo, Brazil