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Software Engineering Specialist & Software Architect

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Hi, I'm Pétrus.

Software Engineering Specialist & Software Architect

Glowing treasure chest inside a cave
 +
years
Java
 +
years
React
See My Résumé
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JavaSpring BootNode.jsReactNext.jsNext.jsTypeScriptPythonDockerLinuxElectron
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Next.js

Frontend
FIRST PING 2020

Full-stack React framework for fast, well-indexed apps: server rendering, statically pre-generated pages and API routes in one project, as in this portfolio and the e-commerce platforms I shipped.

Expedition Services

Routes I'm equipped to lead

High-load Spring Boot services and microservices, the engineering behind financial-sector systems at Livelo. Profiling, tuning and reverse engineering when the documentation runs out.

JavaSpring BootMicroservices

Solution architecture with the team close by: I set the technical standards, break the work into plans the team can execute and guide each engineer through their activities, from solution design to code review. Quality is built along the way, not checked at the end. It was my role at Livelo, coordinating the integration between two platforms and hundreds of tasks across Jira and Confluence.

Solution ArchitectureMentoringCode ReviewJiraConfluence

Fully optimised mods and plugins that stay smooth on busy servers, from 1.7.10 to the latest release. Author of EverNifeCore and maintainer of the Crucible server core.

JavaForgeBukkitPaperSponge

From raw data to decisions: cleaning, modelling and forecasting with Pandas and scikit-learn, delivered as dashboards, predictive models and prescriptive recommendations.

PythonPandasML

End-to-end platforms: a polished React/Next.js front end on a solid Spring Boot back end. 30+ e-commerce products shipped front to back, database and DNS included.

ReactNext.jsSpring Boot

AI-assisted engineering inside a real enterprise: the PagLiv MCP server, which opens Livelo's financial controllership to an AI client through 180 read-only tools under 14 independent guardrails, plus Amazon Q and Kiro wired to Jira via MCP and the team's AI standards, set in a software architect role.

Amazon QKiroClaude CodeMCPLLM APIs
The Expedition Route

Charted territory, year by year

A Brazilian Computer Scientist who graduated from FCT-UNESP (Presidente Prudente, SP), now a Software Engineering Specialist and Software Architect with strong enterprise work in Spring Boot, React, Next.js and AI applied to the engineering workflow, with agentic IDEs and MCP in production.

  1. 2015

    Entering the open-source world

    Contributing on GitHub since March 2015: 8K+ contributions and counting.

  2. 2016

    Java, professionally

    High-performance, multithreaded Java systems, from desktop to cloud.

  3. 2016-

    Open-source, in production

    Open-source libraries in daily production on live servers around the world.

  4. 2018-

    Freelancing begins

    First clients as a full-stack freelancer, and 30+ projects shipped over the years: end-to-end e-commerce platforms (front, back, database, DNS) for small businesses.

  5. 2021

    Computer Science degree

    Bachelor's degree in Computer Science, Unesp, Presidente Prudente, with a final thesis on predictive and prescriptive data analytics.

  6. 2023-2024

    The 2iM clinical system

    A dynamic form engine with 20+ field types that raised a clinical system's productivity by 200% (Spring, React, FHIR, Camunda).

  7. 2024-2026

    The BFF proxy at Livelo

    LivProxy: an annotation-driven proxy in the Node.js BFFs between the React fronts and the Java backends; a BFF task fell from ~1 week to ~30 min.

  8. 2025

    Architect on project ECOFIN

    Designed the bridge between Livelo and Sydle One and built its messaging engine: 300K+ messages/day in order, scaled vertically by virtual threads and horizontally by dynamic pods.

  9. 2026

    The PagLiv MCP server

    An MCP server in Java 25 and Spring Boot integrating 6 services and their databases as 180 read-only tools, behind 14 independent guardrails that put security and auditing first.

View my résumé
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