John Leiman Email & Phone Number

Seoul, South Korea

• Collecting and managing large quantities of contextual data and labeled roadside-pedestrian footage alongside >300k image COCO dataset using efficient data pipeline architectures• Deploying the YOLOv8-Pose estimation model with Docker/Kubernetes to semi-autonomously annotate footage on CVAT• Training heuristic rules-based & Keras deep learning models to classify pedestrians hailing taxis in real-time (5-15 fps)• Leveraging an OpenAPI-powered NLP labeling-model to communicate hailer positions with 93% mean Average Precision

San Diego, California, United States

• Collaborating with professors from UCSD, UT Austin, Virginia Tech, and TA&MU to conduct sustainability-oriented economic research on electrical usage patterns in Hanoi, Vietnam, involving <45000 households over a 2-year period• Employing R & STATA scripts for meticulous large-scale data cleaning (<76M raw entries) as well as advanced regression analysis techniques, identifying the impact of billing cycles, weather, and altitude on consumption patterns• Implementing PyTorch ML models to classify consumer-categories based on usage behaviors and GIS data pinpointing• Engineering and executing an information-behavior randomized control trial in collaboration with Hanoi utilities/policymakers to test the effects of various billing statement formats on consumer behavior

Jakarta, Indonesia

• Revamped front- & back-office BCA websites such as "promo.bca.co.id" with more efficient Transact-SQL server-side data-structures, and ASP.NET MVC/Spring Data JPA APIs, optimizing functionality and user experience• Designed website front-ends with ReactJS, to facilitate end-stage development UAT, ensuring a user-friendly interface• Generated comprehensive reports on website traffic patterns using Google Analytics 360• Strengthened ReCAPTCHA login integration security and managed server networks with IIS for optimal performance• Assisted in English-Indonesian, and Chinese-Indonesian translation work for various clients and with enlisted contractors