Justin Chen

Justin Chen

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Computer Engineering @ University of Toronto | Software Engineer
Toronto, Ontario, Canada

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Résumé

Jobs verified_user 0% verified
  • MarkIT
    Grading Inconsistency Checker
    MarkIT
    Jul 2024 - Current (2 years 4 months)
    • Conducted research with Prof. Tarek Abdelrahman to develop an LLM-powered system to process student assignments and identify grading inconsistencies among teaching assistants • Constructed a full-stack web app with Express.js, MySQL, and Azure, integrating LLM API for grading analysis • Designed a CRUD API layer and a Marker Module for grading data management using MVC architecture • Caught 91% of grading inconsistencies via LLM Chain of Thought prompting (CoT) and Few-shot Learning
  • Veeva Systems
    SOFTWARE ENGINEER
    Veeva Systems
    May 2023 - Apr 2024 (1 year)
    • Developed and rolled out a preview feature for Veeva Vault application on AWS, enabling top pharmaceutical companies to better manage global drug approval applications. Built with Java, React, Spring Boot, Redux, Axios, leveraging RESTful API and AWS Lambda for performance optimization • Spearheaded automation of a time-intensive database modification task impacting all Veeva Vault teams, cutting processing time from 5 hours to 4 minutes with Python, collaborated with cross-functional teams for integration • Employed TDD and automated testing with Junit, Mockito, Jest, RTL, and integration test with Cucumber • Managed CI/CD pipelines using GitLab and Jenkins, leveraging Dockerized test environments for consistent builds, and developed
  • O
    SOFTWARE INTERN
    Ontario Ministry of Government
    May 2022 - Sep 2022 (5 months)
    • Utilized Robotic Process Automation with Python and Power Automate to generate Power BI dashboards by automatically extracting data from weekly status meeting PowerPoints, Excel sheets and web data scraping • Built Visitor Pass Credential Verification application using Power Apps, streamline guest visitor entry to office • Hosted scrums and managed sprint planning for Ontario's Integrated Financial Information System (IFIS) using Jira
Education verified_user 0% verified
  • University of Toronto
    B.A.Sc.
    University of Toronto
    Sep 2020 - Apr 2025 (4 years 8 months)
Projects (professional or personal) verified_user 0% verified
  • P
    Painting Art Movement Classifier
    Sep 2024 - Dec 2024 (4 months)
    • Developed an ensemble model with EfficientNetV2 and Vision Transformer (ViT), pretrained on ImageNet-21K with PyTorch, NumPy and Hugging Face Transformers • Fine-tuned models with AdamW optimizer, label smoothing, and OneCycleLR scheduler, to prevent overfitting • Benchmarked against a baseline SVM model built with Scikit-learn, validating performance improvements • Achieved 75% test accuracy in classifying WikiArt paintings into 11 art genres, surpassing prior benchmarks with potential applications to museum archives
  • G
    Google Maps Application
    Jan 2022 - May 2022 (5 months)
    • Developed a Google Maps-like application with OpenStreetMap dataset, designing efficient graph data structures to store and preprocess map data, and creating a backend API to optimize query efficiency and robustness • Built an interactive GUI with GTK library, visualizing streets, names, and geographic features via layered rendering • Implemented A● pathfinding algorithm with Manhattan grid-based heuristics, levering multi-threading for large scale routing. Optimized the Traveling Salesman Problem algorithm using branch and bound method, achieving top 15% in class for route quality within a constrained execution time