Henry Do Email & Phone Number

El Segundo, California, Us

- Lead mechanical engineer for under-ear headset.- Developing systems interface requirements using CREO top-down design skeleton methodology.- Developing robotic test fixtures using Fusion 360 for testing using stepper motors and 3D printed components to verify material performance claims by vendors.- Calculating tolerance stack ups to ensure part fits and critical dimensions for CREO skeleton interface.- Managing Bild PDM to ensure organization and vendors are utilizing the same design file versions.- Sourcing and managing manufacturers based on approved mechanical specifications.- Developing load and injection molding simulations from test data to reduce iteration cycles.- Design mechanical systems that can pass water seal and burst pressure tests.- Optimizing design geometries for ultrasonic sheer welding for DVT builds.- Identify and test critical datum dimensions to update mechanical skeleton for top-down design.- Writing design of experiments (DOE) for EVT feasibility and validation of injection molding and adhesive bonding processes.- Writing requests for quotations (RFQ) to quickly source suppliers and communicate design intents.

Denver, Colorado , Us

**Mechanical Design Engineering Lead **- Designs mechanical enclosure for optical lens - Designs mechanical interface for SPO2 module- Designs medical adhesive for EKG module- Designs mechanical enclosure for device charger - Designs flex PCB and board outlines for new products using sheet metal tools- Designs for additive manufacturing prototypes- Designs for plastic injection molding manufacturing - Designs fixtures and protocols for device testing- Reverse engineering designs and mechanisms.- Compiling and managing bill of materials.- Organizing technical reports and updates through Slack, Jira, Confluence, and SharePoint.- Compliance to ISO 9001, ISO 13485:2016, cGLP, cGCP, cGMP, GDPProducts brought from Concept to Market:- wrist-based pulse oximeter- chest-based pulse oximeter- finger-based pulse oximeter

Manhattan Beach, California, Us

*** Acquired by Biointellisense May 2, 2022****** Currently a subsidiary within Biointellisense ******Founding Engineer (Employee #4)***- Project ownership for chest and wrist wearable devices: conceptualization, prototyping, designing for DFMA, reviewing, and validating opto-electromechanical enclosures for plastic injection molding and additive manufacturing.- Leading the technical relationship with vendors to prototype, test, and mature components ready for mass manufacture of mechanical components.- Validating and approving electromechanical design drawings and firmware revisions from cross-functional internal engineering teams.- Leading hypoxia clinical trials for FDA approval of several class 2 medical wearable devices for chest and wristwatch wearables for both Medtor Inc. and Biointellisense- Designing and managing large CAD assemblies .and their associated drawings.- Project management with international stakeholders (Indian, Korean, and Chinese) regarding manufacturing processes, price negotiation, lead times, supply chain issues, device specifications.- Supervising engineering intern through various software tools to design mechanical enclosure, PCB schematics and layouts, and firmware.- Interfacing with the business development and technology development teams, as well as current and potential customers to develop new concepts and images for proposals.- Developing marketing materials for around the office.- Rendering and new and existing CAD drawings design proposals to communicate between cross functional teams.- Maintaining compliance to ISO 9001, ISO 13485:2016, cGLP, cGCP, cGMP, GDP during product development.

Manhattan Beach, California, Us

- Product design engineering and optical hardware development for PPG-based BLE smartwatch, chest patch, and finger pulse oximeter products using Altium (ECAD) for PCB schematics and layouts, Fusion 360 (MCAD) for parametric and surface modeling, and TracePro for raytrace simulation and stray light analysis- Leading the technical relationship with vendors to prototype, test, and mature components ready for mass manufacture of mechanical components- Ideating, concepting, prototyping, assembling, testing, debugging, and integrating new hardware designs and firmware.- Redesigning sensor packaging to meet (DFMA) manufacture requirements for plastic injection molding and die cutting and light-blocking.- Analyzing PPG datasets, waveforms, and optical/gain/current settings to assist algorithm engineer in debugging optical analog front end (AFE) settings.- Designing, developing, and testing membrane switches and flexible pcb cables, revising for manufacturer DFM requirements.- Designed and developed optomechanical cross talk blocking components to reduce ambient light interference.- Developing adhesive base layers and light blockers to reduce motion-induced signal artifacts and ambient light leakage to maximize the signal-to-noise (SNR) ratios of our photoelectric transducers and improve our system's dynamic range.- Discovering optimum onbody device placement for clinical testing on various body morphologies.- Technical writing internal and external documentation for device bring-up and usage.- Bringing up prototyped devices using various communication protocols: I2C, UART, TCP/IP.- Debugging Python GUI to accommodate new testing requirements and host devices.- Supervising engineering intern to help prototype an Arduino-based PPG device using breadboards and wires, designing electronic schematics and PCB layouts using Upverter, and designing a mechanical enclosure with Fusion 360.

Valencia, Ca, Us

- Designed ground wiring and I-beam assemblies.- Designed and prototyped test fixtures for soft material implantables using SolidWorks.- Produced drawings of CAD designs with dimensions, GD&T tolerances, BOM, and title blocks.- Converted PCB enclosures designs from .OBJ to G-code to produce functional PCB enclosures.- Provided field support for on-site upgrade and maintenance of Vector Gait and Safety System.

Irvine, California, Us

- Led a three-person team, managing technical direction, and generating accurate design specs. - Designed and prototyped a wearable shoe sensor system for rehabilitating toe-walking. - Designed and prototyped a wearable sub-threshold tactor that minimizes postural sway.- Programmed PWM signal for tactor system to reduce variation from target frequency.- Redesigned stronger enclosures for tactors and improving meantime to failure by 100%.- Developing experimental protocol; Trained and supervised researchers in data collection.

Irvine, California, Us

- Refined PCB enclosures and identified alternative vendors to reduce material cost by 95%.- Refined PCB fabrication process, replacing hand-soldering with reflow to reduce PCB by 80%.- Integrated accelerometers, force resistors, and corrective actuation systems for wearables.- Produced BOMs, Gerber files, EAGLE Schematics, 3D CAD drawings, 3D Printed Prototypes.

Irvine, California, Us

- Read and analyzed electrical schematics to assess circuit designs proposed by colleagues.- Designed and built electrical components using breadboard prototyping, KiCAD LabView.- Designed and fabricated PCB casing using CAD (Rhino), laser cutter, and additive 3D printer.- Worked in multidisciplinary team to design shoe sensor for children suffering from toe-walking.- Compiled and analyzed accelerometer, gyroscope, motion capture data using MatLab.- Learned to communicate technical procedures using medical and anatomical terminology- Wrote technical documentation detailing purpose, materials, specifications, and progress.- Analyzed gait using motion capture balls and Gait Real-time Analysis Interactive Lab (GRAIL). - Visualized motion capture data with using Gait Offline Analysis Tool (GOAT) and Xsens Sensors.

Bachelor Of Arts - Ba, Integrative Biology (Human Biology Concentration)

Master Of Science - Ms, Biological Engineering & Small-Scale Technologies

Certificate, Fundamentals Of Embedded Systems

Intensive Japanese (Uceap Certificate)