juanbulla.ar · LinkedIn · juanbulla9@gmail.com · Status page
I'm a sysadmin and DevOps engineer from Argentina 🇦🇷. I keep Linux servers, networks and pipelines running, and I enjoy the parts most people avoid: bare metal, TLS, backups, logs and the alert at 3 a.m. Blue-team security is the lens I look at everything through.
I've done that for an ISP, a dev agency and a radio & TV station.
- 🔎 Elastic Stack consulting. A repeatable deployment kit (Terraform + Ansible: Elasticsearch, Kibana, Fleet, TLS everywhere) and a read-only auditor that checks 65 rules on health, security, ILM, backups, Fleet and cost, then writes a client-ready report. Elasticsearch 7.17 through 9.x.
- 📻 MuteBreaker. A 1U rack appliance that listens to an FM station with a real tuner (ESP32 + RDA5807M), detects dead air and carrier loss, and pings the team's phones in under three minutes. Browser-configured, with an optional Grafana / VictoriaMetrics / Loki backend. Moving from the bench to the first station.
- 🧪 On the bench. Meshtastic nodes on Heltec LoRa32 boards, a de-Googled home server, and a Pi Zero 2 W for Wi-Fi auditing.
| Project | What it is | Built with | |
|---|---|---|---|
| 🎙️ | transcriba | Live captions and translation for conferences: dozens of rooms in parallel, attendees read on their phones, rooms get a screen view or an OBS overlay. Runs on Gemini's Live API or fully local with Whisper + Gemma. Apache-2.0, with a runbook written for volunteers. | Python · FastAPI · WebSockets · Ollama |
| 🛡️ | k3s-security-lab | Multi-node k3s on KVM with Kyverno admission policies, Falco runtime detection over eBPF, and alerts shipped to Elasticsearch / Kibana. The journal documents every failure with root cause and evidence, including my own mistakes. | k3s · Kyverno · Falco · Elastic · cloud-init |
| 📻 | MuteBreaker private, ask me | FM air and stream monitor for radio stations: firmware, hardware, backend, portal and docs. | ESP32 · C++ · Python · Grafana |
| 🧭 | rampa private, ask me | Multi-cloud internal developer platform: control plane, agent, web UI and CLI. | Go · TypeScript |
| 📈 | upptime | Status page for my sites, running entirely on GitHub Actions, Issues and Pages. Live:  |
GitHub Actions |
| 📟 | audice 2020 | Where MuteBreaker started: a mic-level silence detector that sent an SMS through Twilio after 30 seconds of dead air. | JavaScript · Web Audio · Twilio |
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V-Twin engines, FM radio, and terminals that look like 1985. If you ever wanted to watch YouTube as ASCII art in your terminal, here's how.
I work in Spanish and English, from UTC−3. Infrastructure, observability or security problem? Write to juanbulla9@gmail.com or find me on LinkedIn.