Meta Global Hackathon

Global first place among thousands of participants

• Coding Challenge: LeetCode-style questions (medium to hard) with speed bonuses
• Linux Challenge: Find secrets inside the filesystem using Linux commands
• Find the Bug Challenge: Identify bugs in language-agnostic code snippets within time limits
• Quizzes: General knowledge about programming and Meta
• Product Thinking Challenge: 2-man team overall champion — proposed and presented a tech solution to a given problem statement before a panel of Meta judges

Citi Hackoverflow

First place in Citi's annual hackathon

BrainHack Today I Learned

Second place in national-level hackathon combining ML and robotics

• Qualifying round: Kaggle competition with text classification (bi-directional LSTM with attention, label smoothing, 5-fold CV — highest F1 on private leaderboard) and object detection (ensemble of YOLOv4, YOLOv5, EfficientDet, DETR, RetinaNet with Weighted-Boxes-Fusion)
• Final stage: Disaster rescue scenario with autonomous drone photography, A*-based path planning from aerial images, NLP-guided target identification using CV+NLP model matching, and robotic arm target acquisition

Singapore Science and Engineering Fair

Handwritten character classification using feature extraction and neural networks

• Feature extraction pipeline: Otsu binarization, skeletonization, connected component filtering, fixed-point skeleton tracing
• Achieved comparable results to state of the art at the time with a simple feedforward neural network