Open to opportunities

Embedded systems &
hardware engineer

// PCB · Firmware in C · Low-power IoT · Antenna design

I've spent 10+ years building connected devices — the PCB, the firmware in C, and usually the enclosure and interface too. I like hardware that's easy to open, fix, and keep running.

"If I can't open it, I don't own it." — Privacy-by-Design & Right to Repair.

Get in touch Download CV (PDF) GitHub
Illustration portrait of Sébastien Dominguez Madrid, ES 🇪🇸
10+
Years in embedded & IoT
3
Languages (FR · ES · EN)
C/C++
My main firmware languages
EA4HOQ
Amateur radio callsign
01 · Profile

I work across the whole device.

That usually means the PCB, the low-power firmware in C, the wireless and antenna side, the enclosure, and often the interface on top. I started out in industrial design and graphics, so I care about how a product feels and looks, not just the electronics inside. I recently qualified as a solar PV installer (Spain, FP Level 2), which keeps me close to hands-on electrical work, and in 2026 I certified in designing and implementing AI solutions for IT environments — useful when a connected product needs a model behind it rather than around it.

02 · Experience

Professional experience

Ten years working on electronics: soil probes, medical devices, and IoT systems.

Feb 2022 — Present
Avignon, FR · Remote

Embedded Systems Engineer

Brad Soil Technology
  • Design agricultural soil probes from scratch: hardware, firmware in C, and the low-power wireless and antenna side.
  • Work on the low-power design so the probes last longer between charges out in the field.
  • Set up the network that collects the soil data over MQTT.
Jan 2018 — Jul 2020
Apt, FR

Embedded Systems Engineer & Prototyper

Géria Contract
  • Prototyped medical electronic devices for senior care, including haptic simulators.
  • Took devices from spec to a working, manufacturable PCB — both hardware and firmware.
  • Cleaned up the design workflow so prototypes came together faster.
Watch the video report
Dec 2015 — Dec 2016
Paris, FR

Co-founder & UI/UX Designer

DevFoundry
  • Handled the visual identity and creative direction.
  • Designed the web and mobile apps, from wireframes to the final UI.
Jul 2014 — Dec 2014
Montereau, FR

Software Developer (Internship)

SNECMA — Safran Group
  • Built an internal web app for the AIS (Aeronautical Information Service) team.
Watch the video report
2009 — 2012
Madrid, ES

Web Designer & Network Administrator (Internships)

CAMAROTE · COMPENSA · PRAXIS MMT
  • Designed company websites and reworked the UI of a few web apps.
  • Looked after the on-site IT network.
03 · Selected work

Projects & open hardware

A couple of open-source hardware projects I built on my own time.

Jan 2025

DON'T PANIC Relay

An open-source 12-channel relay driver based on the ESP32, made to fit on a DIN rail. For home automation and small industrial control.

ESP32PCBDIN-railOpen-source
Oct 2014

OpenBee

A setup to monitor beehives remotely over MQTT — temperature, humidity and weight, from the sensor to a simple dashboard.

IoTMQTTTelemetryLow-power
04 · Toolbox

Technical skills

The tools and languages I actually reach for.

Embedded & Hardware

CSTM32ESP32ATmega328PIC32PCB designKiCADEasyEDAAltiumAntenna designLow-power

Software & Protocols

PythonNode.jsDockerMQTTLoRaWANJavaScriptHTML/CSSPHPSQLLLM & agentsAI solution design

Design & CAD

Fusion 360FreeCAD3D printingArchicadSketchUp ProAdobe SuiteAffinity SuiteUI/UX

Renewable Energy

PV sizing & layoutInstallationMaintenanceElectrical safetyWork at heightsShading simulation
05 · Credentials

Education & certifications

Mar — Jul 2026 · Remote, FR

Designing & Implementing an AI Solution for IT Professionals

Simplon.co / campusAtlas — French industry-branch professional certification (Atlas). 156h: 94h live virtual classroom, 62h tutored e-learning, 9 modules and project briefs.
2025 — 2026 · Leganés, ES

Solar PV Installation & Maintenance — Certificado Profesional ENAE0108 (FP Level 2)

CRN Leganés, Comunidad de Madrid — 540h, all modules APTO. 3D PV modeling in SketchUp Pro with sun-path & shading simulation.
2014 — 2018 · Paris, FR

Digital Technology Developer — École 42

Peer-to-peer, project-based CS & software engineering. Specialised in embedded systems, C/C++ and PCB fabrication. Completed level 16/16.
2009 — 2012 · Pozuelo de Alarcón, ES

Técnico Superior en Desarrollo de Aplicaciones Informáticas (DAI)

IES Gerardo Diego — Spanish state qualification in IT application development, EQF level 5 (FP Grado Superior).
2011 — 2012 · Toulouse, FR

Multimedia Graphic Design 2D/3D — Honours

Aries, École Supérieure d'Infographie 2D & 3D (Mention Bien).
2009 · Madrid, ES

Baccalauréat Technologique STG

Lycée Français de Madrid — Académie de Toulouse. Accounting & Corporate Finance.
Cambridge English Skills Test — B2
Score 172/180 · Cambridge · 2026
IoT Antenna Design — Characterisation & Optimisation
CAP'TRONIC / Jessica France · 2022
Fundamentals of AI Agents
Hugging Face Agents Course · Feb 2025
Remote Pilot Training Certificate — UAS
DGAC France · recreational · 2021
Amateur Radio Licence — CEPT (EA4HOQ)
Spain · 2021
PRL — Electrical Risk (HV/LV) & Work at Heights
Getafe / Paracuellos, ES · 2026

Get in touch.

I'm looking for embedded and hardware roles, on-site around Madrid or remote. Email is the quickest way to reach me.

sebastien@dontpanic.link +34 623 069 042 Download CV