Selected work

Useful software in complex environments

A curated look at the kinds of systems, constraints, and contributions that have shaped my work.

Experience in context

These examples stay at a public, non-confidential level while showing the problems and responsibilities involved.

Jama Software · 2024 – Present

Enterprise SaaS reliability and automation

Support a large-scale web platform by reproducing complex defects, tracing services and data flows, automating diagnostics, and partnering with engineering on root-cause analysis and modernization.

  • Java & Spring
  • REST APIs
  • Python & JavaScript
  • Kubernetes

UNOPS Brazil & Manatus Technology · 2025 – Present

Subsidy-management product architecture

Lead architecture, data modeling, APIs, integration and security flows, internal tooling, code review, and feature planning for a multi-stakeholder web application.

  • System design
  • Data modeling
  • APIs & integrations
  • Product leadership

QAT Global · 2021 – 2024

Customized enterprise product development

Built frontend and backend features, integrations, and maintenance improvements for complex enterprise workflows while working directly with U.S. stakeholders.

  • React & ExtJS
  • Java, Spring & Java EE
  • Docker
  • TeamCity

Manatus Technology & Mirante Technology · 2019 – 2021

Healthcare and public-sector systems

Contributed to Connect SUS and ANVISA-related systems, balancing new interfaces and APIs with the reliability needs of established applications and databases.

  • Node.js
  • React Native
  • Angular
  • Oracle SQL

Core capabilities

Tools change; these are the technical areas I have repeatedly used in shipped or supported systems.

Languages

  • Java
  • JavaScript
  • TypeScript
  • Python
  • SQL

Applications and APIs

  • Spring
  • Java EE
  • Node.js
  • Express
  • Nest
  • REST integrations

Interfaces

  • React
  • Angular
  • AngularJS
  • Vue
  • ExtJS
  • React Native

Data and delivery

  • PostgreSQL
  • Oracle DB
  • MongoDB
  • Docker
  • Kubernetes
  • CI/CD

Project details are intentionally limited to facts approved for public use; client data, internal architecture, and confidential outcomes are omitted.