Still here. Thank you.
Giovanni Rios Martins
Backend & Platform Engineer · Internal Developer Platforms · 6 years shipping production systems end-to-end
Selected work
Featured · Open source
In development
Yggdrasil
An open-source control plane that operates infrastructure — not just catalogs it. Apache-2.0.
Declarative manifests with real GitOps — apply, diff and rollback — plus a workflow engine driven by event-driven reactors. Written in Go with a full-lifecycle CLI and Go SDK. Self-hosted by design on your own Kubernetes/Postgres, with MFA auth, multi-tenant surfaces (dashboards, APIs, MCP servers, bots) and a public integration contract anyone can extend.
Go
Kubernetes
PostgreSQL
RabbitMQ
Declarative apply / diff / rollback
Pluggable adapters (AWS · GCP · Stripe · …)
One-command install
2021 — 2026 · 5 years
Stone Pagamentos · Backend Engineer (Junior → Backend Engineer II)
Internal Developer Platform
One of the engineers who built the company's IDP from its early days — today used by dozens of squads. Worked across the platform stack end to end (Backstage, Crossplane, Terraform, multi-cloud, GitOps) and built backend services in Node.js / NestJS / TypeScript with versioned REST/OpenAPI contracts, PostgreSQL, Docker and CI/CD. Owned features end-to-end — technical design, deployment, production monitoring and iteration — with security best practices (authn/z, input validation).
Backstage
Crossplane
Terraform
Kubernetes
Multi-cloud
GitOps
Node.js · NestJS · TypeScript
2019 — 2021 · early career
mech4u · SandreFrio
Founding engineer & freelance
Founding engineer at mech4u: shipped an automated parts-quotation product to production — Python services driving AutoCAD to extract part dimensions from CAD drawings and price them. For SandreFrio, built a Django web application to digitize the company's data entry and management.
Python
AutoCAD automation
Django
PostgreSQL
