ERP Web
In productionA web ERP that incrementally replaces and modernizes a legacy desktop ERP, one business domain at a time.
Technologies: Java · Spring Boot · Vue · Nuxt · TypeScript · Firebird
> hello, I'm
Matheus Passos
Senior Full Stack Software EngineerTechnical lead · Paraná, Brazil
Building software, modernizing legacy systems, and solving complex engineering problems.
About
I’m a software engineer who works across the whole stack: React and Vue interfaces, Java and Python services, relational databases and the AWS infrastructure they run on.
Most of my work is on systems a business runs on every day: an ERP being modernized out of a legacy desktop application, integrations with external providers, data moving between old and new databases, and the production problems that only show up under real load.
I prefer designs that hold up in production, changes that ship in small steps, and notes that save the next person from working everything out again.
Expertise
- Frontend
ReactTypeScriptVue / NuxtAstroGraphQLHydrogen
Interfaces for operational software and commerce: large component systems, SSR and typed data access.
- Backend
JavaSpring BootPythonFastAPINode.js
Domain-heavy services, integrations with external providers and asynchronous processing.
- Cloud & Infrastructure
AWSDockerLinuxCI/CD
Lambda, SQS, RDS and S3 in production, containerized services, pipelines and observability.
- Data
PostgreSQLFirebirdRedisMariaDB
Relational modeling, query performance, legacy databases and moving data between them.
- Architecture
APIsDistributed SystemsMessagingLegacy Modernization
Incremental modernization and event-driven flows for systems that must keep running while they change.
Selected projects
AI Central
In productionA modular AI customer-support platform that answers tickets end to end, grounded in live order data and a curated knowledge base.
Technologies: Python · FastAPI · LangGraph · PostgreSQL · pgvector · Redis
Atlas
In productionA supply chain planning system that forecasts demand per product, projects stockout dates and suggests what to buy.
Technologies: TypeScript · Node.js · Fastify · PostgreSQL · Firebird · Vue
Chatbot
In productionA customer-service chatbot that runs scripted conversation flows across several channels and opens the right support ticket at the end.
Technologies: TypeScript · Node.js · Fastify · PostgreSQL · Zod · Vitest
SocialEagle
In developmentA platform for influencer, campaign and social-media work: it turns long-form video into publishable clips and tracks campaigns.
Technologies: TypeScript · Node.js · Express · Prisma · PostgreSQL · OpenAI Agents SDK
Latest articles
How to Build a Customer Support Agent with Python
A practical architecture for an LLM support agent that can run in production (queues, state machines, retrieval, guardrails and handoffs), based on AI Central, the support platform I designed and lead.
12 min read