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Available for new projectsCampinas, BR · UTC−3

Caio BarbieriSenior SRE · Cloud & PlatformReliable cloud platformsand the tools to run them.

Senior SRE focused on cloud and platform engineering, currently at Opsteam. I run AWS and Kubernetes platforms, GitOps, observability, cloud security and incident response — and I publish open-source tools for people who run systems and AI agents.

caio@lombello: ~zsh

whoami

Caio Barbieri · Senior SRE · Cloud & Platform @ Opsteam

cat focus.txt

Platform & Kubernetes · GitOps & CI/CD · Observability · Security & incidents

ls ~/projects

falatrace/alphatypescript
quotalantern/alphapython
perigauge/alpharust
delexpress/privatereact

uptime

in DevOps & SRE since Feb 2022

01 — Projects

Featured projects

Products and tools I've built — from recordings with traceable context and AI quotas to peripheral battery on Linux and an app for couriers — and the infrastructure behind them.

s00021412:4812:48.4 → 12:55.1sha256 3f9c…e1a0Alpha

AI tooling · 2026

FalaTrace

Remember what was decided. Check where it was said.

Records and transcribes calls on Linux, links every summary point to the exact moment in the recording and gives AI agents context with a verifiable source.

  • TypeScript
  • Bun
  • Qt/QML
  • Python
  • Whisper.cpp
  • Ollama
  • +2
42%codex · 5hokwarncritn/astaleAlpha

AI tooling · 2026

QuotaLantern

A lantern for your AI quotas.

A Linux tray app that shows usage, limits, resets and costs of AI subscriptions — and never turns a missing reading into zero.

  • Python
  • GTK 3
  • AppIndicator
  • libnotify
  • +1
PERIGAUGEKeychron M6ultra-link 8k72Galaxy Buds3 Probluetooth · sppLRcaseMX Master 3Shid++ · bolt9%12:48Alpha

Linux desktop · 2026

PeriGauge

Your mouse, keyboard and headphone battery, right in your panel.

Battery monitor for mice, keyboards and Bluetooth headphones on the Linux desktop: one Rust binary, fully local, with no network and no telemetry, a KDE Plasma 6 widget and low-battery notifications.

  • Rust
  • Qt/QML
  • KDE Plasma
  • D-Bus
  • +2
shift · 6 deliveries#1042card#1043cash#1044paidSETTLEMENTcollect$12.4012342-opt · 4 stopsPrivate

Web · 2026

DelExpress

The shift's deliveries and the day's settlement, in the courier's pocket.

A mobile-first PWA for restaurant couriers: it logs deliveries, payments and tips, reads the order ticket from a photo with AI, plans the route and works out what to pay or collect at the end of the day — even offline.

  • React
  • TypeScript
  • Vite
  • Tailwind CSS
  • +4
70skillsSKILL.md---name: diagnosedescription: Use when tests fail…---claudecodexopencodekirogeminiActive

AI tooling · 2026

Agent Skills

Engineering discipline, packaged for any coding agent.

A provider-agnostic library of 70 skills for coding agents — used daily with Claude Code, Codex CLI, OpenCode and Kiro.

  • Markdown
  • Python
  • Shell
  • Claude Code
  • +3
QUALITY GATESevidencenumberslinksdedupefail-closedPrivate

Cloud & automation · 2026

Radar de Produção

A newsletter that only ships when every claim has a source.

A serverless AWS pipeline that collects, classifies and drafts a production-engineering newsletter — and blocks the issue if any quality gate fails.

  • Python
  • AWS Lambda
  • Step Functions
  • Amazon SES
  • +3
~/dotfiles$ ./scripts/bootstrap.sh ✓ zsh ✓ git ✓ ssh ✓ vscode$ python3 setup.py verify ✓ sha256 manifest · no drift$ nix flake check ✓ x86_64-linux ✓ aarch64-linux$Active

Developer environment · 2025

Dotfiles

A reproducible Linux environment, from shell to Nix.

Configs and scripts that rebuild my development environment on Ubuntu, Pop!_OS and Fedora — with Zsh, multi-client Git and a portable Nix and Home Manager profile.

  • Shell
  • Zsh
  • Python
  • Nix
  • +2

02 — About

Platform, reliability and automation.

Caio Barbieri

Caio Barbieri

Senior Site Reliability Engineer (SRE) | Cloud & Platform Engineering

Campinas, São Paulo, Brazil

Portuguese (native) · English (professional proficiency)

SRE / Cloud professional with 4+ years of experience in DevOps, Kubernetes and infrastructure automation. Works across AWS platforms, GitOps and developer tooling, with hands-on experience in observability, cloud security and incident response in client environments. AWS Certified Security – Specialty and Solutions Architect – Associate.

Platform & Kubernetes

AWS foundations with Terraform and EKS, cluster upgrades with Karpenter, and reusable modules, Helm charts and Backstage templates.

GitOps & CI/CD

Delivery flows with Argo CD, GitHub Actions and GitLab CI — including moving self-hosted GitLab and its runners to Amazon EKS.

Observability

Grafana, Prometheus, Loki, VictoriaMetrics, CloudWatch and Alertmanager: cross-region log centralization, dashboards and tuned alerts.

Security & incidents

Least-privilege IAM, OIDC and SSO, Keycloak and Vault, network segmentation and incident response with evidence preservation.

Core stack

Cloud & infrastructure
  • AWSEKS · ECS · EC2 · VPC · S3 · RDS · KMS
  • Oracle Cloud
  • DigitalOcean
Containers & IaC
  • Kubernetes
  • Docker
  • Terraform
  • Helm
  • Karpenter
Delivery & platforms
  • CI/CD
  • GitOps
  • Argo CD
  • GitHub Actions
  • GitLab CI
  • Backstage
Observability
  • Grafana
  • Prometheus
  • Loki
  • VictoriaMetrics
  • CloudWatch
  • Alertmanager
Security
  • IAM
  • OIDC
  • SSO
  • Keycloak
  • HashiCorp Vault
  • Network segmentation
  • Incident response
Automation
  • Python
  • Go (Golang)
  • Bash / Shell
  • Linux

03 — Career

Experience

Over 4 years building and running platforms — from intern to technical lead on enterprise projects.

  1. Aug 2025 — present

    1 yr 3 mos

    Opsteampresent

    1. Site Reliability Engineer (SRE) | Cloud Engineer

      Aug 2025 — present · 1 yr 3 mos

      SRE and cloud consulting for client environments, covering infrastructure, developer platforms, observability and security.

  2. Feb 2022 — Aug 2025

    3 yrs 7 mos

    Vertigo Tecnologia

    1. Senior DevOps Analyst

      Jun 2025 — Aug 2025 · 3 mos

    2. Mid-level DevOps Analyst

      Sep 2024 — Jul 2025 · 11 mos

    3. Junior DevOps Analyst

      Oct 2022 — Sep 2024 · 2 yrs

    4. DevOps Intern

      Feb 2022 — Oct 2022 · 9 mos

04 — Recommendations

What colleagues say

I had the opportunity to work with Caio for more than a year at Opsteam, working together on most of our projects and day-to-day challenges.

Besides being a very technically competent professional, he always stood out for the way he thinks and proposes solutions. He doesn't settle for the most obvious path: he is always looking for new approaches and bringing new technologies into the work, especially AI, which he already used in a very professional way to explore ideas, speed up analyses and find alternatives for different problems.

That way of working made for a great partnership throughout this period. There were many technical discussions, exchanges of ideas and problems solved together, always with plenty of openness to question, experiment and think outside the box.

He was an excellent colleague and someone with whom I had the pleasure of building a relationship that went beyond purely professional collaboration. I recommend him without a doubt as a professional who adds value both through his technical skills and through the way he thinks and collaborates with the team.

Pablo Marques

Senior DevOps Engineer | Site Reliability Engineer (SRE) | 4X AWS | Kubernetes | Terraform | GitOps | Platform Engineering

Caio is my friend and coworker, and I congratulate him for being an excellent professional in DevOps, DevSecOps, SRE, and AI. I had the opportunity to collaborate with him on projects demanding high technical responsibility and strategic decision-making. Caio stood out not only for his mastery of modern automation tools, IaC, and CI/CD but mainly for his systemic thinking and innovative solutions that added real value. His constant search for knowledge and willingness to share make him a key player in any tech team. It's great to work with someone who combines technical competence, proactivity, future vision, and humility. He also stands out in the AI market, planning and building cutting-edge solutions!

Rodrigo Pontes

DevOps Engineer Senior | SRE | IA | DevSecOps

I had the privilege of working with Caio and can confidently say: he is one of those rare professionals. Extremely technical, fast learner, and impressively adaptable to any challenge, regardless of technology or complexity. Beyond technical mastery, Caio has a sense of responsibility and collaboration that elevates any team. Always ready to help, propose solutions, and keep quality at the center. He is the kind of person you want by your side when you need someone reliable, intelligent, and versatile. I strongly recommend Caio for any company or project seeking technical excellence with a practical attitude.

Highlander Dantas

Staff Software Engineer | Platform Engineer | Instructor

05 — Blog

Technical writing

Notes on Kubernetes, observability and automation.

Contact

Let's talk?

Got a platform, cloud or observability challenge — or want to chat about one of the projects? Reach me on WhatsApp or by email.