Jean Luiz
About
Fullstack Software Engineer based in Salvador, Bahia, Brazil. Graduated from IFBA (Instituto Federal da Bahia) and coming from a graphic design background, I leverage my deep appreciation for visual arts and UI/UX to bridge engineering patterns with aesthetic details. I specialize in Angular, React/Next.js, Node.js, and NestJS, with a heavy focus on software architecture, AI engineering (including prompt engineering and autonomous agent systems), and SQL/NoSQL databases like PostgreSQL and MongoDB. Passionate about modular codebases, containerized dev workflows, and delivering fast, context-aware web solutions.
Find Me
Reach out and find me online in these platforms:
Work
01/2023 — Present
Full Stack Software Engineer at Aton Engenharia
Worked in the development and architectural evolution of SAFFIRA, an AI-powered forest fire monitoring system:
- Architected an event-driven asynchronous messaging pipeline utilizing Redis and BullMQ, synchronizing telemetry data between edge servers and central instances with sub-second latency across a platform monitoring millions of hectares.
- Designed and implemented a “false-negatives” media processing pipeline integrating FFmpeg and MinIO, reducing bandwidth usage by 60% and enabling secure streaming via presigned URLs.
- Refactored the core MongoDB database schema utilizing Mongoose discriminators, enabling 100% multi-tenant data isolation and reducing data redundancy for multiple enterprise clients.
- Overhauled the frontend utilizing Angular Signals, PrimeNG, and OpenLayers, reducing UI state overhead and improving geospatial rendering response times for camera tracking.
- Designed a declarative GitOps compilation pipeline using Docker and ephemeral staging namespaces, reducing staging environment setup overhead by 90%.
11/2022 — 10/2023
Software Engineer Intern at SESAB
Modernized public health intranet systems for the Ernesto Simões Filho General Hospital:
- Overhauled the portal to serve thousands of public health workers, reducing information retrieval friction through a comprehensive UX audit and semantic HTML layouts.
- Redesigned the application architecture into a decoupled MVVM model utilizing ReactJS on the frontend, NodeJS on the backend, and PostgreSQL, improving overall data transaction stability.
- Deployed and maintained local network server nodes using Apache web servers, utilizing Git release tagging to ensure zero downtime and stable version control across hospital departments.
Side Projects
2026
Street Steel
Developed an AI-powered calisthenics mobile application using React Native, Expo, and Zustand, implementing a custom fuzzy search overlap matching algorithm to synchronize stateless AI workout generators with ExerciseDB APIs.
2026
Truebasis
Developed a lot-centric cryptocurrency portfolio tracker utilizing a dedicated Go microservice (go-ethereum, gRPC) for real-time WebSocket EVM log indexing and ABI decoding, integrated with a NestJS backend and Next.js 16 frontend executing chronological FIFO tax lot reconstruction.
2025
CodX
Developed a gamified programming learning platform as a graduation thesis utilizing Next.js, Supabase, and Drizzle, implementing a remote code execution engine via Piston API and a Gemini API-powered AI debugging assistant.
2023
FreshFood
Designed and developed an organic grocery delivery and recipe discovery mobile application, bridging high-fidelity UX prototyping with NestJS ingredient parser pipelines.
Education
2019 — 2024