I managed the end-to-end cloud data infrastructure serving terabyte scale loan-level financial data:• Scaled the monthly mortgage-backed securities distribution day process through automation, ensuring hundreds of securitization reports and loan-level data to be processed within the same business day.• Spearheaded the data platform Spark 2 to 3 migration as an advocate and the technical lead across all teams in the company, preventing end-of-life of old Google Cloud Dataproc images that would interrupt all production ETL jobs.• Led the data platform migration from Microsoft Azure to Google Cloud at the petabyte scale; executed a seamless transition with no data loss and zero downtime.• Initiated and implemented the first continuous version update strategy and disaster recovery plan; implemented automatic update alerts and scheduled security vulnerability checks; scheduled routine backups of the data warehouse to archive storage with limited access and validated the restoration process to protect business-critical data.• Created and maintained data pipelines and backend services in Scala and Python, including automatic file scrapers and PDF parsers, Airflow plugins and operators, and RESTful API endpoints.• Worked in an agile environment, such as performing code reviews, epic and sprint planning, and participating in hack days.dv01 was acquired by Fitch Group in September 2022.

School of Marine and Atmospheric Sciences (SoMAS)• Advisor: Prof. Edmund K.M. Chang (Nobel Peace Prize 2007, shared as a contributor to the IPCC)• Dissertation: Finding Storm Track Activity Metrics That Are Highly Correlated with Weather Impacts

School of Marine and Atmospheric Sciences (SoMAS)• ATM102 Weather and Climate• ATM201 Introduction to Climate and Climate Change• ATM397 Air Pollution and Its ControlGuest Lecturer:• ATM320 Spatial Data Analysis using Matlab

I was accepted to the Summer Internships in Parallel Computational Science (SIParCS) program and developed a Python-based cyclone tracker, PyStormTracker, over a ten-week period:• Utilized NumPy, SciPy image processing library, and MPI4Py parallel programming library.• Conducted benchmark tests on the Yellowstone supercomputer, with good scaling performance on 100s of CPUs.

As a coastal engineering consultant, I performed data collection, analysis, and modeling:• Collected seabed sediment samples in the San Diego Harbor; gathered water flow data in San Dieguito Lagoon using GPS-equipped drifters. • Modeled beach erosion process, tidal dynamics, and tsunami waves caused by distant earthquakes.• Discovered short period sea-level fluctuations in the Santa Barbara Channel.

Research Center for Environmental Changes• Advisor: Dr. Danie M.C. Liang

I worked in the High-Performance Computing (HPC) Support Team under the Information Technology Services Centre (ITSC) to support the operations of on-campus supercomputing clusters:• Assisted users including graduate students, postdoctoral researchers, and faculty members in using the HPC clusters: o Gathered requirements and installed dependent libraries. o Compiled, fine-tuned, and deployed scientific computing programs. o Debugged and troubleshooted programs on the HPC clusters, working closely with research users.• Conducted User Acceptance Testing (UAT) for a newly constructed HPC cluster.

Division of Geological and Planetary Sciences• Advisor: Prof. Yuk L. Yung• Project: Solar Cycle Warming of IPCC Models

Aviation Weather Forecast and Warning Services• Advisor: Dr. Ping-Wah Li• Project: Ingesting of data from a Doppler LIDAR (LIght Detection And Ranging) into the Local Analysis and Prediction System

I operated web hosting and webmail services in the early 2000s:• Built a server which was colocated in the HKNet data center in Hong Kong.• Implemented the LAMP (Linux/Apache/MySQL/PHP) stack on RedHat Linux 9.• Managed user dashboards, provided technical support, and responded to security incidents.• Offered competitive pricing at HKD$100/100MB/year per user, with full Perl CGI and PHP support.

I was the webmaster of this non-profit and managed logistics for adventure counselling training courses.

As a subcontractor, I installed the last-mile Fiber-to-the-Building (FTTB) broadband internet and VoIP telephone services in residential buildings.