About Me
Hey there!
My name is Chun-Yi Tsai (Victor), a software engineer & Computer Science student based in NYC.
Education:
- M.S. in Computer Science @ Columbia University, NYC, US
- B.S. in Computer Science and Mechanical Engineering @ National Tsing Hua University, Hsinchu, Taiwan
- CS Exchange Student @ Technical University of Dresden, Dresden, Germany
My current Interests:
- Backend development
- Devops & Cloud Infrastructure
- ML/AI applications
- High-performance computing
My brief Experience:
- Backend Engineer Intern @ LINE GO
- DevOps Engineer Intern @ Chunghwa Telecom
- Software Researcher @ High-Speed Lab, NTHU
Recent Experience
LINE - Backend Software Engineer Intern (Jul 2024 - Aug 2025)
Engineering microservices for ride-sharing platform serving 5M+ daily active users.
Columbia University - Master Student (Sep 2025 - Dec 2026)
Focusing on AI/ML, distributed systems, and high-performance computing.
Projects
JobFlow - Job Application Tracking System job-flow.app
- Full-stack platform with Go backend and Next.js frontend, deployed on AWS Lambda.
- Supports 10+ users tracking applications with their own customizable workflows.
Tech: Go, Gin, Next.js, PostgreSQL, AWS Lambda, Github Actions, CI/CD
New York City Landmark Recognition System Github
- Deep learning system achieving 95%+ accuracy on custom 1,000+ image dataset.
- Implemented using ViT-B/16 model with advanced data augmentation.
Tech: PyTorch, ViT-B/16, ResNet, EfficientNet, Computer Vision
Cache Performance Simulator
- C++ cache simulator with set-associative mapping and multiple replacement policies.
- Reduced cache miss rate by 30% through optimized eviction and prefetching.
Tech: C++, Memory Management, Cache Algorithms
Technical Skills
Languages: Python, C/C++, JavaScript, Go, TypeScript, Java, SQL
Systems: Linux, Memory Management, Concurrency, Cache Optimization
Backend: Node.js, Go, Spring Boot, Django, Flask, REST APIs
Cloud & DevOps: AWS (EC2, S3, Lambda), Docker, Terraform, Kubernetes, CI/CD
Databases: MySQL, PostgreSQL, MongoDB, Redis, DynamoDB
ML/AI: PyTorch, TensorFlow, OpenCV, Computer Vision
Reverse Engineering: IDA Pro, x64dbg, x86 Assembly