$ cat resume.md

Enrique Calacuayo

Biomedical Engineer · Electronics · Software · San Luis Potosí, México

# SUMMARY

Biomedical Engineering–trained, electronics-focused builder of full-stack hardware/software systems. I take ideas from analog/digital schematic → PCB layout → embedded firmware → operational software required for real deployments. Strong hands-on experience designing and manufacturing PCBs (Eagle, Gerber handling), prototyping through multiple methods (CNC, UV etching, screen printing, in-house processes), and firmware for PIC / STM32 / ESP32 platforms. Also experienced building end-to-end operational software (inventory, POS, offline-first sync) with a reliability-first mindset.

# EXPERIENCE— $ git log --stat

commit d4a9f312023 – Present

Electronics & Embedded Engineer

DCircuits PCBS MX S.A. de C.V.

STM32ESP32PCBDFM/DFTFirmware

+Designed production-ready PCBs (DFM/DFT), documentation, and test plans.
+Developed firmware for STM32/ESP32 and integrated peripherals and protocols.
+Delivered end-to-end hardware+software systems tailored to operational requirements.

commit c2b7e052024 – Present

Coffee Business Owner

Expreso 501 — Fixed café + pop-up

OperationsPOSBusiness

+Fixed + pop-up café operations, product development, and customer experience in San Luis Potosí.
+Built all internal tooling: POS, processes, metrics, and workflow standardization.

commit 9e3c1482021

Co-founder / Project Lead

Airway Medical Technologies

StartupMedicalUASLP

+Co-founded a medical technology startup and led engineering projects with university teams.
+Awarded "Premio Potosino de Innovación" (2021).
+Directed projects with social-service students from the Faculty of Sciences (UASLP).

commit 7f1a29c2019 – 2021

Research — Embedded Systems for Healthcare

UASLP — Faculty of Sciences & Faculty of Medicine

EmbeddedMedicalPICArduino

+Built a sign-to-text interpreter (Spanish written output) within the Optical Communications group.
+Designed a low-cost portable video laryngoscope for intubation support in critical patients (2020).
+Developed a hemorrhage measurement device for labor/delivery patients (2021).

commit 2b8d5632021 – 2023

Instructor / Teaching Assistant

UASLP — Basic Instrumentation & PIC Workshop

TeachingPICInstrumentation

+Taught Basic Instrumentation lab sessions (Jan–Jul 2021, 2022, 2023).
+Led a student build of a line-following robot with obstacle avoidance (PIC + Arduino).
+Delivered a PIC Microcontroller Programming Workshop (Mar 2022).

# SKILLS

[Electronics & Hardware]

·PCB design (Eagle, Gerber generation/handling)

·Schematic capture

·DFM / DFT

·Analog + digital design

·Power (DC/DC, battery)

·Prototyping: CNC, UV etching, screen printing

·3D enclosures (Fusion 360)

[Embedded Systems]

·STM32 (ARM Cortex-M)

·ESP32

·Microchip PIC

·Raspberry Pi / Arduino

·RTOS / bare-metal C/C++

·ADC, PWM, USB HID

·RS-232 / MDB

·SD + file systems

[Systems (Linux)]

·Arch, Debian/Ubuntu, Raspberry Pi OS

·systemd services

·SSH

·Bash scripting

·Networking basics

·Imaging / backup

·Logging & troubleshooting

[Software]

·Laravel / PHP

·React / Next.js

·TypeScript

·Android (Kotlin)

·REST APIs

·MySQL

·Room (offline-first + sync)

[Manufacturing & Ops]

·PCB process scaling

·QC mindset

·Assembly readiness

·Process documentation

·Cost / lead-time tradeoffs

·Vendor / BOM control

# PUBLICATIONS— peer-reviewed · selected

Quantitative Validation of Hematocrit Percentage Drop Cutoff Points in Postpartum Hemorrhage: An Automated Gravimetric Approach

V. B. Kway, J. E. Calacuayo-Rojas et al.

Maternal Fetal Medicine · 2025 · 7(1) · DOI 10.1097/FM9.0000000000000255

Journal ArticlePeer-reviewedOpen Access

[Publisher →][DOI →][PMC →]

Novel Video-Laryngoscope with Wireless Image Transmission via Wi-Fi towards a Smartphone

M. Guerra-Hernández, G. J. Vidaña-Martínez, J. E. Calacuayo-Rojas et al.

Electronics (MDPI) · 2020 · 9(10):1629 · DOI 10.3390/electronics9101629

Journal ArticlePeer-reviewedOpen Access

[Publisher →][DOI →]

Diseño y construcción de un guante traductor de lenguaje de señas a mensajes de ayuda

José Enrique Calacuayo Rojas, Sandra Denisse Martínez Sosa, Abel García Barrientos

Pistas Educativas · 2019 · Vol. 41, No. 134 · pp. 74–83

Applied ResearchAssistive Tech

[Publisher →]

# EDUCATION

Biomedical Engineer

2013 – 2018

Faculty of Sciences — UASLP (Universidad Autónoma de San Luis Potosí)

+Research and prototyping across Faculty of Sciences and Faculty of Medicine (embedded systems for healthcare).
+Teaching roles: basic instrumentation labs and PIC microcontroller workshops (hands-on, project-based).

# AWARDS

2021"Premio Potosino de Innovación" (2021) — Airway Medical Technologies

20193rd Place — Instrumentation & Electronics Prize — Optical Communications group (UASLP)