Resume
Biomedical engineer · Software developer · Electronics developer.
San Luis Potosí, MX · enriquecalacuayo@gmail.com · LinkedIn
Summary
Biomedical Engineering–trained, electronics-focused full-stack hardware/software builder focused on turning ideas into production-ready systems: from analog/digital electronics design, schematics and PCB layout to embedded firmware and the operational software required for real deployments. Strong hands-on experience designing and manufacturing PCBs (Eagle, Gerber generation/handling), prototyping and fabrication through multiple methods (CNC, UV etching, screen printing, and in-house processes), and developing firmware for microcontrollers (Microchip PIC, Arduino, and ST/STM32 platforms). Proficient in C/C++ and in building libraries for industrial device integration. Skilled in 3D mechanical modeling (Fusion 360) for electro-mechanical integration. Also experienced building end-to-end operational systems (inventory/POS/sales workflows, local + server databases, offline-first sync) with a reliability-first mindset, strong documentation practices, and continuous improvement for manufacturing and quality processes..
Experience
DCircuits PCBS MX S.A. de C.V. — Electronics & Embedded
2023 — Present
PCB design, embedded firmware, hardware validation, and custom systems for clients.
- Designed production-ready PCBs (DFM/DFT), documentation, and test plans.
- Developed firmware for STM32/ESP32 and integrated peripherals and protocols.
- Delivered end-to-end systems tailored to operational requirements.
Expreso 501 — Coffee Business Owner
2024 — Present
Fixed + pop-up café operations, product development, and customer experience.
- Built operational systems (POS, processes, and metrics) for consistency.
- Led service, logistics, and workflow standardization.
Airway Medical Technologies — Co-founder / Project Lead
2021
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).
UASLP — Research Projects (Embedded Systems for Healthcare)
2019 — 2021
Developed embedded prototypes for medical/healthcare applications across the Faculty of Sciences and Faculty of Medicine.
- Built a sign-to-text interpreter (Spanish written output) within the Optical Communications group.
- Designed a low-cost portable video laryngoscope to support intubation in critical patients (2020).
- Developed a hemorrhage measurement device for labor/delivery patients (2021).
UASLP — Instrumentation & Electronics Prize (3rd Place)
2019
Third place recognition for a sign-to-text interpreter project (Spanish written output) developed within the Optical Communications group.
UASLP — PIC Microcontroller Programming Workshop (Instructor)
Mar 2022
Delivered a practical workshop focused on PIC microcontroller programming and real-world implementation.
UASLP — Basic Instrumentation (Teaching Assistant / Instructor)
Jan–Jul (2021, 2022, 2023)
Delivered hands-on instrumentation sessions and led student projects in embedded robotics.
- Ran practical training sessions on core instrumentation concepts and lab exercises.
- Led a student build of a line-following robot with obstacle avoidance using PIC and Arduino.
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, J. S. R. Cuevas, U. M. Moreno, J. S. C. Juárez, J. F. A. González, K. K. Larraga, I. V. C. Martinez, R. A. C. Reyther, A. G. Moscoso
Maternal Fetal Medicine • 2025 • 7(1) • DOI 10.1097/FM9.0000000000000255
Journal ArticlePeer-reviewedOpen Access
Validates hematocrit drop thresholds against quantified blood loss using an automated gravimetric measurement approach to support robust postpartum hemorrhage assessment.
- Clinically grounded validation using correlation and ROC-based cutoff analysis.
- Supports retrospective identification of significant blood loss when direct quantification is limited.
Novel Video-Laryngoscope with Wireless Image Transmission via Wi-Fi towards a Smartphone
M. Guerra-Hernández, G. J. Vidaña-Martínez, J. S. Camacho-Juárez, H. Barragán-Villegas, J. E. Calacuayo-Rojas, B. A. Reyes, J. A. Castañón-González, O. F. Núñez-Olvera, M. d. P. Fonseca-Leal
Electronics (MDPI) • 2020 • 9(10):1629 • DOI 10.3390/electronics9101629
Journal ArticlePeer-reviewedOpen Access
Presents a low-cost video-laryngoscope prototype with real-time wireless streaming to a smartphone over Wi-Fi, emphasizing accessibility and practical clinical workflows.
- Prototype engineering focused on portability, usability, and real-time visualization.
- Validated through comparative evaluations against conventional approaches.
Diseño y construcción de un guante traductor de lenguaje de señas a mensajes de ayuda (Design and Construction of a Glove Translator from Sign Language to Messages for Help)
José Enrique Calacuayo Rojas, Sandra Denisse Martínez Sosa, Abel García Barrientos
Pistas Educativas • 2019 • Vol. 41, No. 134 • pp. 74–83
Journal / ProceedingsApplied ResearchAssistive Tech
Assistive technology prototype translating sign language gestures into actionable help messages, combining sensor integration with embedded interpretation logic.
- Human-centered design focused on accessibility and practical deployment.
- Published as part of a special issue on knowledge dissemination (2019).
Skills
Electronics & Hardware
PCB design, bring-up, validation, and robust hardware for real deployments.
PCB layout (DFM/DFT), analog + digital, power (DC/DC, battery), test points, debugging, documentation.
Embedded Systems
Firmware architecture, peripherals, comms, and system integration.
STM32 / ESP32 / PIC / Raspberry Pi Platforms / Arduino, RTOS/polling, drivers, ADC/PWM, USB HID, RS-232/MDB, sensors, SD + file systems.
Systems (Linux)
Multi-distro Linux workflows, system setup, and dedicated deployments for embedded and production environments.
Arch, Debian/Ubuntu, Raspberry Pi OS • system services (systemd) • SSH • bash scripting • networking basics • imaging/backup • logging & troubleshooting.
Software
Web + mobile apps, APIs, automation, and internal tools.
Laravel / PHP, React / Next.js, Android (Kotlin), REST APIs, MySQL, Room (offline-first + sync), tooling + workflows.
Manufacturing & Operations
From prototype to small-batch production with process discipline.
PCB process scaling, QC mindset, assembly readiness, process documentation, cost/lead-time tradeoffs, vendor/BOM control.
Education & Research
Biomedical Engineer — Faculty of Sciences, UASLP
UASLP • 2013 — 2018
Biomedical engineering training with a strong focus on electronics, embedded systems, and applied prototyping for healthcare-oriented projects.
- 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).
Academic Output
2019 — 2025
Peer-reviewed publications in medical instrumentation and embedded healthcare systems.
- Maternal Fetal Medicine (2025) — Quantitative validation of hematocrit drop cutoffs in postpartum hemorrhage (automated gravimetric approach). Publisher
- Electronics (MDPI) (2020) — Novel Wi-Fi video-laryngoscope with smartphone streaming. Publisher
- Pistas Educativas (2019) — Sign-language translation glove (assistive embedded prototype). Publisher
Peer-reviewedMedical devicesEmbedded systems
Awards
2019 — 2021
- “Premio Potosino de Innovación” (2021) — Airway Medical Technologies.
- 3rd Place — Instrumentation & Electronics Prize (2019) — Optical Communications group (UASLP).
Selected Work
For detailed write-ups, see Projects.
- DCircuits: electronics + embedded client systems (PCB → firmware → validation → deployment).
- Expreso 501: POS + operations stack (offline-first, data tracking, and workflow standardization).
- Medical prototypes: wireless video-laryngoscope, hemorrhage measurement device, assistive sign-language glove.