CTO · Sento IoT+Electronics Hub

From circuit board
to deployed intelligence.

Danilo Díaz Tarascó — electronics engineer, Medellín

I build industrial IoT products end to end: PCBs and firmware for harsh environments, the cloud that keeps fleets alive, and the 12-engineer team that ships it all.

See the work Book a session

Signal path · rev 2026 ● LIVE

MedellínUTC−5

Uptime target99.9%

Packets (demo)—

Years shipping hardware: 10+
Engineers led: 12
Fleet uptime: 99.9%
Revenue growth, 3 yrs: ~60%

01 / About

Hardware roots, cloud reach, team scale.

I'm a hands-on CTO and electronics engineer. For more than ten years I've built IIoT products across embedded systems, connected hardware, and AWS-backed platforms, going from MCU firmware, PCB design, and FCC certification to serverless infrastructure and production rollouts in LATAM, the Caribbean, and the US.

At Sento I lead a 12-engineer team inside a 30-person company. We helped take the business from negative to positive EBITDA while revenue grew ~60% over three years, and I lean on AI tooling (Claude Code, Codex, MCP) so a lean team ships like a large one.

Based inMedellín, Colombia
LanguagesSpanish (native) · English (C1+)
EducationB.S. Electronics Eng., USB
PostgradMSc Electronics (thesis pending)

Full profile on LinkedIn ↗

02 / Selected work

Systems that survive the field.

Professional work is described at the architecture level; client and proprietary details stay private.

Edge · FirmwareSento

GW-Standalone

An autonomous IoT gateway for sites with no reliable network, written in MicroPython for the LoPy4 (ESP32).

Multi-link uplink: LoRa P2P, Wi-Fi AP, and cellular (Blues Notecard)
Bidirectional LoRa protocol with auto-ACK and a persistent flash buffer, so no reading is lost offline
Concurrent threads, on-device web dashboard, hardware auto-detection

MicroPython
ESP32
LoRa
Cellular

Cloud · FleetSento

OTA fleet platform

Over-the-air firmware management for deployed devices, from upload to verified rollout.

React + TypeScript console on a serverless AWS backend (Lambda, API Gateway, DynamoDB, S3)
Firmware distributed through short-lived pre-signed URLs; live update monitoring
Amplify variant with Cognito and AppSync GraphQL; CI/CD through GitHub Actions

TypeScript
AWS
Serverless
IaC

Hardware · Product2019 — 2024

Harsh-environment IIoT hardware, from prototype to export

IPC-compliant PCBs, enclosures, solar telemetry, and chemical-dosing control cabinets for poultry, swine, and agro-industrial sites. I took FCC certification through to approval, wrote MicroPython firmware with supervisor mechanisms for availability and energy efficiency, and moved prototypes from 3D printing to injection molding for LATAM, Caribbean, and US rollouts.

Altium
IPC
FCC
Fusion 360
Injection molding

Open source

03 / Experience

Career path

Jun 2024 — now
Chief Technology Officer
Sento IoT+Electronics Hub · Colombia
- Lead a 12-engineer team setting the technical vision and product roadmap for the IIoT portfolio, sustaining 99.9% uptime across deployed infrastructure.
- Helped move the business from negative to positive EBITDA with ~60% revenue growth over three years, prioritizing high-value verticals from field demand.
- Expanded into maritime cargo tracking, chemical dosing for food processing, and precision agriculture.
- Own architecture across firmware, edge, and AWS backends; brought AI tooling into everyday engineering.
Feb 2023 — Jun 2024
Senior Electronics Engineer — Team Lead
Sento IoT+Electronics Hub · Colombia
- Led a multidisciplinary team delivering IIoT systems for poultry and swine production in harsh environments.
- Managed export compliance and scaled prototypes from 3D printing to injection molding; ran a hardware-adapted Scrum cadence.
Nov 2021 — Nov 2022
Software Engineer / DevOps
PowDevs — client: Blackline Safety · Remote (US/Canada)
- Built fully serverless REST API infrastructure on AWS for a connected safety-device platform.
- Infrastructure as code with CloudFormation and SAM; Python Lambda pipelines; CI/CD in CodePipeline.
Jun 2019 — Nov 2021
Development Engineer
Vantu S.A.S (now Sento IoT+Electronics Hub) · Colombia
- Designed IPC-compliant PCBs for self-service IoT devices in harsh agricultural environments and achieved FCC certification.
- Built AWS infrastructure for FOTA at scale, supporting expansion into the US, Central America, and the Caribbean.
Sep 2016 — Jun 2019
Hardware Engineer
Innavitas SAPI — Wiot · Remote (Mexico)
- Embedded IoT systems for industrial and automotive hydrogen-generation control; production PCBs in Altium.
- Linux-based embedded platforms, web interfaces, and computer-vision pipelines with OpenCV and Python.

Earlier roles

Parts Specialist, Altium / Upverter (Canada)2018–2019
Teaching Assistant, Universidad Simón Bolívar2016–2018
Project Engineer, Mechatronics R&D Group, USB2013–2017
Freelance Engineer, Upwork2015–2016

04 / Expertise

The whole stack, one owner.

L1 · silicon

Embedded & PCB

Altium Designer, ESP32, ARM Cortex, LoRa, IPC standards, FCC certification.

L2 · power

Power electronics

Switching supplies, DC-DC converters, power distribution boards, solar telemetry.

L3 · firmware

Firmware & software

C/C++ for MCUs, MicroPython, Python, SQL, shell; OpenCV for computer vision.

L4 · network

IIoT connectivity

MQTT, LoRa/LoRaWAN, BLE, Wi-Fi, cellular, FOTA, industrial telemetry.

L5 · cloud

Cloud & APIs

AWS Lambda, API Gateway, DynamoDB, S3, Cognito, CloudFormation/SAM, CI/CD.

L6 · people

Leadership & AI-augmented delivery

Technical vision, roadmaps, hiring, export readiness; Claude Code, Codex, and MCP in daily workflows.

Recognition

1st place, IEEE Open Category — CCSBOTS 2013, Latin American Robotics Competition (team Giatronica)
Honorific mention, undergraduate thesis: underwater robot (ROV) telemetry system

Certifications

AWS Fundamentals: Going Cloud-Native · AWS: Addressing Security Risk
AI Proficiency · Advanced Prompting Techniques · Working with Reasoning Models
SQL (Intermediate)

05 / Lab archive

Where it started: real boards.

University and early-career hardware, from the Mechatronics R&D group at Universidad Simón Bolívar.

Red PCB sub-board for an underwater ROV telemetry system, with connectors and a central microcontroller — *Thesis · honorific mention***ROV telemetry sub-board**Telemetry and control electronics for a teleoperated underwater robot.

Altium layout of a square power distribution board with six ESC outputs and a 16 to 26 volt input — *Power***Power distribution board**16–26 V input, six ESC outputs, onboard 12 V / 5 V rails.

Fabricated power distribution board held up in front of its Altium 3D view — *Design → fab***From Altium 3D to copper**The fabricated board next to its design model.

Lab bench with a weather-station prototype, soil sensor samples, and a monitor showing live telemetry charts — *IoT, before it was called IIoT***Weather station prototype**Sensors, soil samples, and live telemetry charts on the bench.

06 / Contact

Let's build
something that ships.

IoT, electronics, or cloud architecture: the fastest way to reach me is LinkedIn. For focused technical help, book a paid session.

From circuit boardto deployed intelligence.