# Danilo Díaz Tarascó

> CTO of Sento IoT+Electronics Hub (Medellín, Colombia). Electronics engineer with 10+ years shipping industrial IoT (IIoT) products end to end: PCB design and firmware for harsh environments, AWS serverless platforms for device fleets, and the 12-engineer team that ships them.

Markdown twin of <https://ddtdanilo.github.io/>. Structured data: [JSON Resume](https://ddtdanilo.github.io/api/resume.json). Contact: [LinkedIn](https://linkedin.com/in/ddtdanilo) (no email or phone is published).

## Summary

- **Role:** Chief Technology Officer, Sento IoT+Electronics Hub (since June 2024).
- **Team:** leads 12 engineers inside a 30-person company.
- **Outcomes:** 99.9% uptime across deployed IoT infrastructure; helped move the business from negative to positive EBITDA with ~60% revenue growth over three years.
- **Stack:** Altium PCB design, ESP32/ARM Cortex, LoRa, MicroPython and C/C++ firmware, AWS (Lambda, API Gateway, DynamoDB, S3, Cognito, CloudFormation/SAM), FCC certification.
- **Location:** Medellín, Colombia. **Languages:** Spanish (native), English (C1+).
- **Works with AI daily:** Claude Code, Codex, and MCP servers in engineering workflows.

## Selected work

### GW-Standalone (Sento)
Autonomous IoT gateway firmware in MicroPython for LoPy4 (ESP32). LoRa P2P, Wi-Fi AP, and cellular (Blues Notecard) uplinks; bidirectional LoRa protocol with auto-ACK; persistent flash buffer so no reading is lost offline; concurrent threads, on-device web dashboard, hardware auto-detection.

### OTA fleet platform (Sento)
Over-the-air firmware management. React + TypeScript console on a serverless AWS backend (Lambda, API Gateway, DynamoDB, S3); firmware distributed through short-lived pre-signed URLs with live update monitoring; an Amplify variant with Cognito and AppSync GraphQL; CI/CD through GitHub Actions.

### Harsh-environment IIoT hardware (2019–2024)
IPC-compliant PCBs, enclosures, solar telemetry, and chemical-dosing control cabinets for poultry, swine, and agro-industrial sites. FCC certification, MicroPython firmware with supervisor mechanisms, and the move from 3D printing to injection molding for LATAM, Caribbean, and US rollouts.

### Open source
- [microsoft/vcpkg PR #50323](https://github.com/microsoft/vcpkg/pull/50323): merged in release 2026.03.18.
- [OpenAI Document Analyzer](https://github.com/ddtdanilo/OpenAI-Document-Analyzer): Python app for text/PDF analysis with OpenAI models; 40+ stars.
- [Personal Altium Library](https://github.com/ddtdanilo/Personal-Altium-Library): open PCB component library; 21+ stars.
- [Fuzzy Naked Mega](https://github.com/ddtdanilo/Fuzzy-Naked-Mega): open-hardware Arduino-compatible ATmega2560 board; 17 forks.

## Experience

| Dates | Role | Organization |
|---|---|---|
| 2024-06 – present | Chief Technology Officer | Sento IoT+Electronics Hub, Colombia |
| 2023-02 – 2024-06 | Senior Electronics Engineer – Team Lead | Sento IoT+Electronics Hub, Colombia |
| 2021-11 – 2022-11 | Software Engineer / DevOps | PowDevs (client: Blackline Safety), remote US/Canada |
| 2019-06 – 2021-11 | Development Engineer | Vantu S.A.S (now Sento IoT+Electronics Hub), Colombia |
| 2016-09 – 2019-06 | Hardware Engineer | Innavitas SAPI – Wiot, remote Mexico |
| 2018 – 2019 | Parts Specialist | Altium Canada / Upverter |
| 2016 – 2018 | Teaching Assistant | Universidad Simón Bolívar |
| 2013 – 2017 | Project Engineer | Mechatronics R&D Group, Universidad Simón Bolívar |
| 2015 – 2016 | Freelance Engineer | Upwork |

## Education

- **MSc in Electronics** (Mechatronics & Power Electronics), Universidad Simón Bolívar, 2020 – present (thesis pending).
- **B.S. Electronics Engineering**, Universidad Simón Bolívar, 2010 – 2016. Honorific mention for an underwater robot (ROV) telemetry system thesis.

## Recognition and certifications

- 1st Place, IEEE Open Category — CCSBOTS 2013, Latin American Robotics Competition (team Giatronica).
- AWS Fundamentals: Going Cloud-Native; AWS Fundamentals: Addressing Security Risk; AI Proficiency; Advanced Prompting Techniques; Working with Reasoning Models; SQL (Intermediate).

## Lab archive

University and early-career hardware from the Mechatronics R&D group at Universidad Simón Bolívar: an ROV telemetry sub-board, a 16–26 V power distribution board with six ESC outputs, and a weather-station prototype with live telemetry.

## Links

- Consulting (paid 1:1 sessions): <https://ddtdanilo.github.io/consult.md>
- LinkedIn: <https://linkedin.com/in/ddtdanilo>
- GitHub: <https://github.com/ddtdanilo>
- YouTube: <https://youtube.com/ddtdanilo>
- Privacy: <https://ddtdanilo.github.io/privacy.html>