PSJ-2026 · REV B · psjacome.com
Portrait of Pablo Jácome

Industrial IoT · Embedded Systems · Cellular & Satellite Telemetry

From field electronics to business decisions.

P.S. Jácome — IoT Solution Architect · Embedded Systems Engineer

I design end-to-end IoT systems that connect low-power field devices, embedded firmware, cellular and satellite communications, cloud platforms and operational workflows.

20+ years in electronics and telecommunications · Field-proven systems · 10+ peer-reviewed IEEE publications

LANGUAGES — Spanish native · English professional · French in progress

Explore the systems Download CV Contact me →
§1

IoT is valuable when it changes an operational decision

Companies do not invest in IoT simply to connect devices. They invest to protect assets, reduce operating costs, improve visibility and make better decisions. I combine electronics, firmware, communications and software into systems designed around those outcomes.

V-01

Protect assets

Cargo security, tamper detection, vessel monitoring and geofencing.

V-02

Reduce operating cost

Low-power design, solar autonomy, edge processing and reduced satellite traffic.

V-03

Improve visibility

Real-time positions, alarms, traceability and operational dashboards.

V-04

Create technology independence

In-house hardware, firmware and platforms that reduce dependence on third-party subscriptions.

§2

Engineering deployed in regulated national operations

My work has supported two distinct regulated monitoring environments in Ecuador: cellular customs cargo monitoring and satellite vessel monitoring. The regulatory authorizations belong to Consorcio Nettel; my contribution is the design and evolution of the electronics, firmware and end-to-end technical architecture behind these operations.

Cellular · 2G/4G · SENAE

Georeferenced customs cargo monitoring

Since 2012, I have designed and evolved cellular hardware, embedded firmware and platform workflows for georeferenced customs cargo monitoring. Consorcio Nettel is an operator authorized by Ecuador Customs (SENAE) to provide this regulated service. Its authorization was renewed for three years after a successful on-site technical inspection in 2026.

Cargo / PEMA2G / 4GNettel platformCustoms monitoring
  • Real-time geolocation and traceability
  • Cargo-unit movement and speed monitoring
  • PEMA tamper detection and alarms
  • Parameterized reports and controlled web access
  • Continuous monitoring workflows

Regulatory evidenceResolution SENAE-SGO-2026-0021-RE · Issued 4 February 2026

Read the full case study →

Satellite · GNSS · DIRNEA

Solar-powered vessel monitoring

I designed the electronics and firmware for Nettel's solar-powered NETT SOLAR SP-201 satellite vessel-monitoring device. DIRNEA's published authorized-provider list includes Nettel and the SP-201 for vessels below and above 20 gross register tons operating in maritime area A1.

Vessel / SP-201SatelliteNettel platformDIRNEA infrastructure
  • GNSS position acquisition
  • Satellite communications
  • Autonomous solar operation
  • Vessel traceability and reporting
  • Integration with maritime monitoring infrastructure

Regulatory evidenceNETTEL · NETT SOLAR SP-201 · DIRNEA published provider list

Read the full case study →

Attribution. I designed the electronics, firmware and technical architecture. Consorcio Nettel holds the regulatory authorization to provide the service. Each regulated service must be delivered by an operator authorized by the corresponding authority; Nettel is one of those authorized operators.

§3

Field results, not laboratory promises

Operating characteristics — basis stated for every figure
ParameterValueConditions & basis
Field operation, solar satellite devices 6+ years Devices field-active without battery service on 1 W solar energy harvesting Measured
Transmissions per unit per year ~35,000 15-minute reporting interval on approximately 1 W of energy harvesting, within a 100 mA peak-current budget Measured
Satellite data cost reduction up to 85% Edge processing and payload optimization before transmission Estimated
Container-protection operations ~2,000 / month Supported by the operations platform in daily use Measured
Devices supported 500+ Through manufacturing and operational workflows Measured
Time-to-market for new verticals days, not months Modular hardware core adaptable across industries Estimated

Figures are based on internal operational records and engineering estimates. Confidential client information is excluded.

§4

One architecture, multiple field applications

The application changes, but the engineering foundation remains consistent: reliable sensing, low-power embedded intelligence, the right communication channel and an operational interface that helps people act.

L-01

Field device

Sensors, GNSS, tamper detection, power management and rugged electronics.

L-02

Embedded intelligence

Firmware state machines, local decision logic, filtering, event detection and payload optimization.

L-03

Connectivity

BLE, 2G/LTE, MQTT and satellite links selected according to coverage, energy and cost.

L-04

Cloud and data

Node.js, PostgreSQL/PostGIS, APIs, geofencing, alerts and historical traceability.

L-05

Operational workflow

Dashboards, WhatsApp notifications, manufacturing management and business decision support.

§5

Systems already operating in the field

SYS-012012 – Present
Lead HW/FW Architect

Customs cargo protection

Two generations of covert cellular container-tracking hardware for cargo-theft mitigation. The next-generation variant aggregates local BLE sensor data inside the container on an nRF52840 before retransmitting over 4G/2G, with tamper-detection hardware throughout. Geofencing, route traceability and real-time alarms run inside a regulated SENAE operating environment.

nRF52840 · 4G LTE/2G modems · PEMA tamper detection · PostgreSQL/PostGIS

Field-proven · in production

Case study →

SYS-022018 – Present
Lead HW/FW Architect

Satellite vessel monitoring

Autonomous maritime telemetry node powered entirely by a 1 W mini solar panel: roughly 35,000 successful satellite transmissions per device per year at 15-minute intervals, within a 100 mA peak-current budget. GNSS acquisition and satellite telemetry integrate with government maritime monitoring infrastructure under a DIRNEA provider and device qualification environment.

PIC MCU · Globalstar transceiver · custom PMIC · solar harvesting · PostgreSQL

Field-proven · 6+ years zero battery maintenance

Case study →

SYS-03Full-Stack Developer

Operations and manufacturing platform

Self-hosted web platforms managing the service-order lifecycle, container-protection operations (~2,000 containers/month) and multi-project device manufacturing workflows — real-time GPS ingestion and mapping, geofencing, WhatsApp bot integration, automated notifications and operational and financial visibility.

React · Node.js/Express · PostgreSQL 16 · PostGIS · Linux VPS

In daily operation
§6

Field Lab — adapting one proven hardware platform

The Field Lab documents how a proven low-power IoT architecture is being adapted to agricultural and livestock problems. Each entry states plainly what has been tested in the field and what remains conceptual.

Edge-AI crop monitoring with satellite backhaul — installed and tested in the field

A solar gateway that aggregates a star network of LoRa soil sensors, classifies the readings at the edge and sends only alerts and summaries over a simplex satellite link. Installed on a working banana plantation in Bucay, Ecuador, where there is no usable cellular coverage.

Gateway installed and commissioned on site · LoRa network, edge alert and satellite uplink demonstrated · operator dashboard shown as a simulation · multi-season and multi-site operation not yet demonstrated.

Solar gateway mounted on a post at the edge of a banana plot in Bucay. Gateway installed · Bucay — field test Star topology diagram of the LoRa sensor network, solar gateway and satellite uplink. LoRa star topology — diagram Mockup of the per-plot soil-moisture dashboard with one plot flagged for irrigation. Operator view — simulated dashboard

Read the full field-test write-up →

Solar cattle tracking — next in preparation

Adapting the field-proven maritime telemetry core into a rugged collar enclosure. Firmware-based geofencing triggers satellite alerts only on perimeter breach — protecting livestock in remote areas with zero cellular coverage.

Hardware core field-proven · enclosure and dashboard at concept stage · no full deployment performed yet.

Status labels are used consistently across the site: FIELD-PROVEN, FIELD TEST, SIMULATED DASHBOARD. A dashboard simulation is never presented as a deployed client system.

§7

Research that strengthens field engineering

I contributed industry experience to academic research in power electronics, battery systems, photovoltaic generation and microgrids. I am a co-author of 10+ peer-reviewed IEEE publications. That work supports the energy-autonomous and low-power systems I design today.

  1. PUB-01

    Hardware-in-the-Loop for Wind Energy Conversion with Resonant Current Control and Active Damping

  2. PUB-02

    Li-ion Battery Discharge Emulator Based on Three-Phase Interleaved DC-DC Boost Converter

  3. PUB-03

    Design and Implementation of a Stand-alone Photovoltaic-Powered Phone Booth

Featured selection. A complete publication index is in preparation.

§8

From naval electronics to complete IoT systems

I began my career integrating communication, radar and electronic-warfare systems in Ecuadorian Navy technology-transfer programs. At Nettel, I progressed from hands-on electronics design to technical leadership across hardware, firmware, communications, cloud platforms, manufacturing and operational workflows.

I have worked with engineering teams from Israel, Italy, Denmark, Chile and the United States, taught electronics and embedded systems at university level, and collaborated on peer-reviewed IEEE research.

  1. 2006 – 2011Hardware Engineer — Ecuadorian Navy
  2. 2007 – 2014University Lecturer — UEES
  3. 2011 – PresentTechnical Director / IoT Solution Architect — Nettel
  4. 2016 – 2019Independent research collaboration — ESPOL research groups
§9

Technical capabilities

Hardware

PCB design, low-power electronics, energy harvesting, power budgeting, GNSS/RF integration, PMICs, DFM and small-series manufacturing.

Firmware

C/C++, Microchip PIC24, Nordic nRF52840 (ARM Cortex-M4), non-blocking state machines, BLE, MQTT, cellular and satellite modem integration.

Platforms

Node.js, React, PostgreSQL/PostGIS with time-series optimization, Linux self-hosting, REST/MQTT ingestion, mapping, geofencing and automated messaging.

Systems

IoT solution architecture, cargo security, vessel monitoring, satellite telemetry, operational workflow design and international supplier management.

§10

Education and continuous learning