Andy Tan Email and Phone Number

• Wrote tools to perform ingest, structuring, and interpretation of data to prove performance of machine learning models.• Designed signal-processing algorithms to analyze time-series health sensor data (photoplethysmogram, accelerometer, electrocardiogram) and compute metrics around signal quality.• Monitored and evaluated data generated by user studies, and provided business insights with intuitive visualizations and reports.• Provided data-driven insights in cross-functional efforts across all teams involved in the data pipeline (data engineering, sensor algorithms, study operations, software, hardware) to support machine learning model development, analysis, and verification.

• Designed and executed worldwide data collection, analysis, and visualization to gain insight on customers’ interactions with products, informing sensor algorithm and hardware design.• Defined sensor performance metrics capturing the customer impact of multitouch sensor hardware design choices, which were adopted widely and served as a shared performance goal between cross-functional teams and senior management.

• Created Python test suites to automate configuration and testing of micro-controller functionality and run-time stability.• Analyzed and validated performance of signal-processing algorithms by using Unix command line tools to collect data and MATLAB/Python to post-process and draw conclusions from it.• Brought up automated hardware test fixtures, replacing manual testing and decreasing test time by 90% while increasing test reproducibility.• Boosted team productivity by developing and sharing a test and data analysis framework across multiple teams.

• Designed and implemented an Allen-Bradley Micro850 PLC-based vacuum vessel control system with a PanelView Component C400 touchscreen HMI for a plasma injector.• Configured a Modbus over Ethernet network to enable remote control and monitoring of the plasma injector from a LabView VI.• Designed and implemented electronics shielding and enclosures in a high-EMI environment.• Specified components and designed protective circuitry for industrial high-voltage 3-phase induction motors.• Created comprehensive documentation of the vacuum control system for easy maintainability by team members.

• Designed and executed experiments to determine the effect of coffee filter holder geometry and water pH on coffee taste.• Prepared weekly updates, a final research summary and a final report to technical and non-technical audiences.

• Worked in a multi-disciplinary team with back-end developers, graphical interface developers, user experience architects, software test developers and a program manager. • Headed a weekly bug triage, summarizing user impact and reproducibility steps for known bugs.• Developed a suite of web API unit-tests.