Aug 2021 – Jun 2024 · 2 yrs 10 mos · Redwood City, California, United States · On-site

• Full-stack Application Owner responsible for end-to-end system design and delivery, including data modeling, backend architecture, metric definition, and frontend implementation.
• Owned the full application lifecycle, including data model design, RESTful API architecture, backend implementation, and frontend development using React, with customized UI components and advanced data visualizations. Designed and defined product metrics, evaluation frameworks, and key data structures to support product and decision-making needs.
• Led cross-functional collaboration with Product Managers, UI/UX Designers, Data Scientists, QA, and Forward Deployed Engineers to translate product requirements into scalable technical solutions. Reviewed system specifications and UI/UX designs to ensure technical feasibility and product consistency.
• Acted as Application Team Leader, coordinating execution, managing delivery quality, and mentoring new hires and interns on technical development and career growth.

Jan 2020 – May 2021 · 1 yr 4 mos

• Identification Hotel Reviews Based on Naïve Bayes and Perceptron Classifiers
• Implemented a Naïve Bayes classifier and perception classifiers (including vanilla and averaged) to identify hotel reviews as either truthful or deceptive, and either positive or negative.
• Part-of-speech Tagger for Different Languages based on a Hidden Markov Model
• Constructed a part-of-speech tagger based on HMM to add tags for Italian, Japanese, and an unknown language.
• Chinese Bert-based Task Oriented Dialogue System
• Built a Bert-based task-oriented dialogue system, which is a dialogue assistant for flight and restaurant reservation in Chinese. Fine-tuned the intent classification and slot filling with Bert-pretrained language model with PyTorch.
• AI Searching Agent for “Time Travelling” Problem
• Developed an AI agent to search for the optimal and shortest path and navigate through a complex time-travelling configuration. The problem was solved with: BFS, UCS, and A* search.
• AI Agent for Little-go Gaming
• Developed an AI agent to play a small version of the Go game, a reduced board size of Go game, based on no-suicide and KO rules. Both game playing and reinforcement learning algorithms were tried to improve the winning percentage.
• Hand-written Digits Classifier based on a Multi-layer Perceptron Neural Network
• Constructed a multi-layer perceptron (MLP) neural network and used it to classify hand-written digit with no existing machine learning libraries.
• Stock-searching Web and Mobile Applications
• Implemented the backend using Python Flask deployed on GCP. Developed a stock-searching web application and a mobile application on iOS system.
• Grain Tracking based on Highly Parallel DBSCAN
• Simulated the sintering processes of aluminum nitride nano powders based on parallel molecular dynamics. The output data is further analyzed using a parallel DBSCAN technique.

Jan 2020 – Dec 2020 · 11 mos

• Teaching Assistant for Finite Element Analysis (Graduate Course) and Mechanics of Deformable Bodies (Undergraduate Course); held the lab class and discussion session independently; supervised students with their homework problems.

Aug 2017 – Jul 2021 · 3 yrs 11 mos

• Mineralization-induced Self-reinforcement Hydrogel
• Manufactured UV curable hydrogel; attached enzyme inside the polymer network; carried out theoretical and experimental study on the biomineralization-induced enhancement of hydrogel.
• Growing Living Composites with 3D-printed Ordered Microstructures
• Presented a methodology to manufacture bionic mineralized composites by harnessing guided bio-mineralization within 3D-printed highly ordered polymer scaffold. Highlighted an exciting opportunity for future bionic composite materials by tailoring interactions between living organisms and 3D-printed synthetic materials.
• Bone-inspired Healing of 3D-Printed Ceramics
• Conducted experiments on autonomous healing of 3D-printed porous polymer-derived ceramics with carbonate-precipitating bacteria; Observed good mechanical behavior as well as thermal and chemical resistance on the healed interfaces of ceramics; Performed a theoretical study to understand his healing mechanism.
• Study on Mechanical Behaviors of Electrophoresis induced Hydrogel Adhesion
• Project Sponsored by Air Force Office of Scientific Research Young Investigator Program
• Established an analytical theory framework to model the electrophoresis-induced reversible adhesion; Obtained good agreements between the theoretical results and the experimental results for both electrophoresis-induced hydrogel adhesion and adhesion releasing.
• Study on Extracellular Matrix of Pancreatic Tissue
• Modeled 3D elastomeric structures using Nonlinear Finite Element Analysis (FEA) to study the bio-mechanical response and buckling behavior of the resected pancreatic tissues (soft materials).

Sep 2014 – Jan 2017 · 2 yrs 4 mos · Beijing, China · On-site

• Study of Fastener Effect on Composite (CFRP) Bolted Joints
• Built a progressive damage models based on FEA with ABAQUS/UMAT to investigate the mechanical behaviors (especially secondary bending and failure mode effectiveness) in bolted composite joints.
• Key Techniques of Composite Structure Design and Analysis
• Project Sponsored by Commercial Aircraft Corporation of China, Ltd. (COMAC)
• Summarized Fatigue Characteristics Analysis and Test Methods in Metal/Composite Hybrid Joints; Conducted static and fatigue tests on metal/composite hybrid joints and structures through Instron based on ASTM.