Mechanical Engineering Engineer

David Araujo

*.******.****.****@*****.***

Education: Mechatronics BS in Mechanical Engineering at San Jose State University May 2016 Awards: Department of Mechanical Engineering S. Brooks Walton Scholarship Recipient Certification: Selway HAAS CNC Machine Tool programmer and operator March 2019 Software Skills: SolidWorks, HSMWorks, AUTODESK Inventor, SolidWorks, Pro-E/Creo, ANSYS, Draftsight, Inkscape, Coreldraw, C Programming, Python, Arduino/Raspberry Pi/Beaglebone Black, Data Acquisition, Linux, LabView, MatLab, PLC’s, CMM PC-DMIS

Machining/Tools: Tig/Mig Welding, Manual Machining Mill/Lathe, CNC, Laser Cutting, Laser Engraving, Water Jet, 3D-Printing, Powder Coating, Anodizing, Engine Rebuilding Work Experience

01/24 – 10/24 Mechanical Engineer Specular Theory Livermore, CA

● Supported the mechanical design and development of virtual reality simulation chairs for the U.S. Air Force

● Led candidate interviews to evaluate CAD proficiency and mechanical engineering knowledge, driving hiring decisions

● Developed a startup documentation structure, and helped set up a new facility, while supporting the project manager in meeting deadlines for the production of simulation chairs

● Assisted in production and manufacturing by designing parts and coordinating with vendors 07/22 – 04/23 Lead Mechanical Prototype Engineer Manager Longshot Space Technologies Corp. Oakland, CA

● Managed two cross-functional teams in building steel structures and manufacturing projectiles, meeting project deadlines while maintaining safety and quality standards.

● Oversaw and directed the mechanical development process of a hypersonic cannon through its various phases, up to Mach 4.8

● Assessed emerging issues and led decision-making with the team to drive continuous improvements, while proactively managing contingencies

● Ensured adherence to manufacturing drawing specifications for dimensions and tolerances; GD&T

● Improved ultralight projectile survivability by 83.33% through the design and analysis of materials using SolidWorks Simulation

● Engineered and executed an optimized heat treatment protocol for mild steel, leveraging advanced metallurgical analysis to improve mechanical properties for high-pressure vessel applications.

● Characterized materials for high-pressure burst disks up to 2400 psi and developed slotting profiles to mitigate propagation shear

07/19 – 07/22 Mechanical Engineer/Quality Engineer Altex Technologies Corp. Sunnyvale, Santa Clara, CA

● Directed executive-level meetings to manage all open and closed contract tasks, regulatory compliance, and alignment with organizational priorities.

● Mentored junior engineers and collaborated with quality leads to enhance ISO 9001 and ASME Y14.5-2009 documentation practices, reducing inspection errors and improving workflow efficiency.

● Assisted in managing week-to-week delegation of QMS and ISO guideline tasks for internal audits and coaching team members on internal audit procedures and strengthening compliance culture across the organization

● Led cross-functional efforts to strengthen quality control by developing, documenting, and overseeing machining of EDM precision Go-No-Go gauges for AQL parts; conducted internal audits that improved compliance and process consistency, contributing to an 80% reduction in production costs

● Instrumented probes & wind tunnels to test micro channel heat exchangers under static/laminar/dynamic flow, meeting DOE criteria by 40% improvement

● Oversaw and conducted FAT testing for critical DoD components

● Designed and implemented work plans, floor layouts, and lean processes for Mil-Spec production, optimizing vendor operations

● Utilized Solidworks PDM to consolidate document control and revisions

● Verified AQL sampling through rigorous handling, reliability, and repeatability testing, utilizing data acquisition for R&D projects

08/16 – 10/18 Mechanical Engineer (Electromechanical) Anthropocene Institute Palo Alto, CA,

(Sapphire Motors, San Leandro, CA)

● Coordinated the research and development efforts for a range of Axial Flux BLDC motors of varying sizes

● Recruited and trained new personnel on to a strong foundation of motor theory, fundamental principles of motor design and operation

● Assessed mechanical design concepts utilizing AUTODESK Inventor for ASME dimensioning and tolerancing standards

● Demonstrated proficiency in utilizing AUTODESK Inventor for various applications including CAD modeling, engineering drawings, assemblies, FEA analysis, CNC paths, and file conversions (Step and STL)

● Operated 700-watt Metal Fiber Laser for metal fabrication work on motor assemblies, equipment, and fixtures With 100% yield with no slag and burrs

● Performed structural design and analysis of distributed loads on pressure vessels and fabricated fixtures

● Employed FDM 3D printers for rapid mechanical hardware prototyping

● Assessed electroplating chemical reactions and material performance with power supplies, multimeters, and oscilloscopes

● Utilized Arduino for various project, e.g. Case timer with LCD display for spot welder in C

● Skilled in thermal resin, adhesives, glue bonding, micro welding, chemical growth of micro-thin films, and mold casting.

Projects/Internship

03/05 – Present Project Engine Building Hayward, CA

● Experienced with gas, diesel, and Wankel engines

● Demonstrated proficiency in troubleshooting and maintaining complex Mechanical systems

● Increased Horsepower of 1995 Toyota Supra Twin Turbo by 88% resulting in a final output of 604 hp and 552 ft-lb

● Proficient in engine assembly and skilled in engine Replacement 03/16 – 08/16 Lab Assistant Mechatronics, Department of Mechanical Engineering San Jose State University

● Responsible to coordinate project designs with lab and committee members

● Utilized Solidworks for engineering drawings and rendered model

● Assisted the investigation of thermal energy management using an Arduino and Raspberry PI integration

● Integrated solar charge controller for feedback sensor to Arduino 08/15 – 05/16 Project San Jose State University Senior San Jose, CA Hydrogen Internal Combustion Engine Manager, San Jose State University

● Led a team of 4 students to retrofit a single cylinder engine

● Responsible of appointing teams and meeting project deadlines

● Debugging and troubleshoot C code that interfaces the engine circuit 05/06 – 06/16 Project Hydrogen Cell Research - Home Innovation Hayward, CA

● Conducted independent research at home to explore hydrogen cells as a renewable energy source

● Investigated and analyzed the potential applications and benefits of hydrogen cells in various settings 06/14 – 02/15 Internship Mechanical Process Engineering Technician, Rocket EMS, Inc. Santa Clara, CA

● Compiled MPIs and SOPs for manufacturing processes

● Innovated time-saving methods on multiple factory lines throughout various fab phases, leading the process

● Integrated sensor-controlled equipment and assembly lines, boosting production and documenting the manufacturing process

● Assisted in CAD design for machined fixtures and production workflow areas

● Investigate components that led to 11,000 blown power supply's 06/14 – 08/14 Internship Research Assistant, UAV Collaborative, NASA Ames Research Center Moffett Field, CA

● Involved in the assembly of PSTAR portable military radar detection system for target acquisition

● Responsible for combining workable units for Alaska UAV team

● Designed SOP’s for erecting and operating each portable unit Consultation

04/23 – Present Project Adviser LongShot Space Technologies Corp. Oakland CA.

● Project Adviser on projectile design and general equipment work 07/22 – Present Project Consultation Mechanical Engineer Altex Technologies Corp. San Jose, CA

● Provide ongoing instruction on the concepts and operational principles of CMM dimensional programs

● Offer ongoing support for First Article Inspection (FAI) initiatives and project endeavors 02/19 – 02/19 Consultation Assistant Development Striker VR San Jose, CA

● Provided valuable production assistance to ensure efficient operations

● Consulted on linear motor concepts to optimize product development

● Conducted research on super-stroke solenoids to enhance haptech experience 06/16 – 08/16 Consultation Silicon Valley Spartan Superway Project and Facility San Jose, CA

● Consulted on project manufacturing, workstation layouts, facility development, and machinery repair

● Led teams of interns to improve the facility work area, machinery safety, and operation

● Utilized Solidworks CAD models of facility floor layouts Interests: Bee keeping, Soccer, Snowboarding, Biking, Hiking, Racing, Performance Cars, Engine Rebuilding, Home Automation, Powder Coating, Go-Karting, Aquaponics, Welding, Lasers, 3D Printing, Space Exploration, Fabrication

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