Hello, I'm Justin Jin — 
a full-stack software developer.

Conducted research in AI medical imaging and assisted in teaching undergraduate courses:

• Trained vision deep learning AI models in medical imaging on the ASU supercomputers with A100 GPUs
• Utilized SLURM job scheduler and shell scripting for training automation on a UNIX environment
• Modified in-house Swin Transformer and multi-task DINO models (ViT) using pyTorch, leveraged annotator metadata in Chest X-ray datasets and improving the training pipeline, improving classification and localization AUC/Dice performance by ~2% (Significant margin in SOTA research).
• Evaluated multi-task models on classification, localization, and segmentation using accuracy, FROC, Dice, etc.
• Utilized GitHub Copilot (GenAI) to learn and design model training pipelines, delivering in-house model improvements within 3 months
• Assisted in teaching vision transformer courses, teaching 50+ undergraduate students concepts in deep learning and transformer architectures

Led backend infrastructure modernization and microservices deployment:

• Migrated monolithic Node.js backend to RPC microservices architecture, improving scalability and maintainability
• Containerized services into Docker Alpine images, deployed and scaled with Kubernetes clusters on GCP
• Integrated Tyk Open Source API Gateway for API exposure and rate limiting with Istio service mesh
• Built GitLab CI/CD pipelines for automated testing, validation, and deployment to Kubernetes
• Implemented Infrastructure as Code using Terraform and Helm for automated deployments and version control
• Maintained and upgraded NoSQL MongoDB with secure and monitored access for the new architecture

Developed flash driver on a custom STM32 rocket micro controller:

• Developed an embedded flash driver in C on an STM32 chip to store real-time data from all sensor modules
• Utilized the HAL library to assert chip select pins and program the DMA controller to read/write data via the SPI bus
• Implemented Direct Memory Access (DMA) without header blocking to meet high throughput requirements
• Implemented timeout/failure safe restarts and flash functionalities such as status check, enable/disable, block erase