WORK EXPERIENCE:

Confidential

Responsibilities:

• Survey/consultation, image build request, installation and configuration, data transfer and end - user delivery of computer systems
• Level 2 Desktop support

MANUFACTURING TEST ENGINEER/QA

Confidential, REDMOND, WA

Responsibilities:

• Performed hardware/software validation testing on Confidential Surface tablets/Xbox/PCBA, and testers.
• Created and executed negative and positive test cases for audio, optical, camera, various detection sensors, and display systems to validate testing stations.
• Performed characterization and script testing on spectrometer/FLIR color camera systems.
• Created image test patterns and performed image analysis to validate camera image quality.
• Debugged C# and XML automation source code for multi-level automation tester and Xbox test suite.
• Bugs verification to release test suite.
• Configured Cisco Ethernet 10G switches.
• Assisted in creating software validation tool and user interface config files.
• Written tester hardware validation plans.

TEST ENGINEER

Confidential, BOTHELL, WA

Responsibilities:

• Worked for the AED verification and validation group.
• Modified PCBs and interfaced with Arduino- embedded hardware and written scripts to control and validate AED software functionality.
• Responsibilities included all aspects of mechanical and electrical testing -shock, vibration, water ingress, personnel safety, thermal- electrical/hardware testing- audio, battery system charging/discharging cycles performance, load test, temperature effects/performance on shelf-life aging and power delivery system, and software functionality and UI testing validation on carry cases and AEDs and data collections and data analysis on carry cases and various AEDs.
• Set up testing instruments to test I/O interfaces, power switching components such as FETs, transformers, capacitors and PMICs, and AED-specific shock therapy delivery systems and a battery of system-level and board-level tests to validate hardware designs.
• Written and peer reviewed test protocols.
• Designed and prototyped ESD test equipment and ESD test station.

ENGINEERING TECHNICIAN

Confidential, REDMOND, WA

Responsibilities:

• Executed test cases to verify and validate software and hardware designs on Tesla touch input and new products prototype projects.
• Setting up oscilloscopes, power supplies, DMMs function generators, logic probes and test fixtures together with the unit-under-test for manual testing to collect data.
• Tests performed to validate I/O interfaces (IC2, USB, GPIB, SPI, Wi-Fi, BT) and system clock, reading from and writing to ports/memory.
• Performed tests measuring electrical parameters for signal common-mode rejection, leakage current, and hi-pot testing.
• Performed data acquisition testing using NI’s software and data analysis through LabVIEW. The test results compiled and compared against predetermined limits to verify and validate design specifications. Post-testing/validation cycle participation to provide feedback to help improving the designs.
• Performed analysis requiring scientific knowledge and laboratory techniques to build and test mechanical models and electrical circuits and assemblies.
• Troubleshoot and repair testing fixtures and equipment out of calibration/tolerance. SMT PCBs rework and imaging PCs.
• Assisted in building automated testing rack system.

RESEARCH/ELECTRICAL ENGINEER

Confidential, RENTON, WA

Responsibilities:

• Responsibilities included finding and investigating unique mathematical abstracts to extract their unique mathematical properties and components.
• The mathematical properties and components are then applied to a specific physical quantity, such as an electrical signal to yield distinct characteristics that resulted in new ideas and applications in electrical engineering.
• Used MATLAB and written C++ programs to model, simulate and test mathematical models. Worked on other projects such as VLSI neural network IC, AC/DC motor-generator system software controls, and BJT amplifier.
• Performed various electrical tests (open-circuit, short-circuit, resistive-load, capacitive-load) on a motor-generator system to determine the electrical (voltage, power, current, resistance) and mechanical (torque, RPM) parameters of the system. The system can now be characterized by these parameters. A BASIC software program was written incorporating these parameters and interfaced to the Intel-emulated microprocessor hardware to simulate and control the motor-generator system via software.
• A 200-MHz Bandwidth Bi-polar Junction Transistor Amplifier. Using the manufacturer’s datasheet, I-V characteristic curves for the Q222 transistors, the quiescent operating point was carefully selected to ensure proper voltage signal swings and a linear region mode of operation.
• The values of biasing resistors were chosen to give the voltage gain for that amplifier stage. The emitter-follower model was used to give the best characteristics and response to the design requirements. The overall gain and bandwidth were achieved cascading amplifier stages. The design was simulated using PSPICE and implemented through PCB-fabrication etching processes.
• The PCB was then tested for the required 100x gain with a 200MHz bandwidth response specifications.
• Programming languages and skills: C#, Visual Studio, PowerShell, Arduino microcontrollers, PCB prototyping and fabrication. Buck-Boost SMP.