Youngjun Yoo Email & Phone Number

West Lafayette, In, Us

West Lafayette, In, Us

West Lafayette, In, Us

OS Kernel Research

West Lafayette, In, Us

UTA for CS 34800: Information Systems (Spring 2025)

West Lafayette, In, Us

UTA for CS 24000: Programming in C (Spring 2025)

West Lafayette, In, Us

UTA for CS 25200: Systems Programming (Fall 2024)• Conducted weekly lab sessions, assisting 100+ students in systems programming concepts and supporting malloc implementation, shell scripting, shell implementation, threads/mutex locks/spin locks, and web server projects.• Evaluated code standards, specifically focusing on multiple logical expressions to ensure adherence to quality standards.• Provided prompt and comprehensive support to students on the Ed Discussion platform, enhancing their learning experience.

West Lafayette, In, Us

UTA for CS 24000: Programming in C (Spring 2024)• Conducted weekly office hours and facilitated lab sessions, assisting 700+ students in C programming.• Evaluated code standards, specifically focusing on variable definitions, initialization, and scope detection to ensure adherence to quality standards.• Provided prompt and comprehensive support to students on the Ed Discussion platform, enhancing their learning experience.

West Lafayette, Indiana, Us

• Led a 10-person team in developing and deploying a revamped website for Rebuilding Together East Bay Network (RTEBN), ensuring stakeholder alignment.• Organized weekly meetings, served as the primary communication point with stakeholders, and utilized Agile methodology for project management.• Acted as Scrum Master, facilitating team collaboration and mentoring in React, Git version control, and design principles for effective project delivery.

West Lafayette, Indiana, Us

• Developed a robust billing website for YWCA using React and Material UI to create a responsive and intuitive frontend, complemented by a Node backend, enhancing both user experience and operational efficiency.• Created a CSV file previewer that seamlessly integrates with the new billing frontend, offering efficient parsing and instant display of data in a well-organized table, tailored for non-profit billing management.• Implemented a feature that automates the generation of personalized vendor bills from CSV uploads, facilitating direct PDF downloads and achieving a 65% reduction in bill processing time.

Bethesda, Md, Us

• Developed a real-time voice-to-note solution using React and WebSockets, integrating STT and LLM to process responses for 300+ daily users, reducing response time by 40% through efficient API integration and optimized React rendering.• Implemented a TTS platform using OpenAI TTS, enabling bi-directional voice communication with Claude 3 Haiku LLM, increasing user engagement by 65% through dynamic voice interaction and multilingual support.• Implemented audio transcription and diarization with WhisperX, achieving 95% accuracy on 2-hour audio files.

Bethesda, Md, Us

• Led the frontend development for the Fasoo Project Management System (FPMS) at Development HQ, utilizing TypeScript, React, and Redux Toolkit to improve user experiences and contribute to project success.• Expanded the FPMS by developing reusable frontend components for tracking project status, creating tasks, and updating the overall progress; designed optimized APIs to enhance data retrieval and frontend performance.• Developed and integrated a real-time markdown renderer with React, transitioning from manual formatting to markdown-based documentation with live preview, enhancing collaboration and boosting productivity by 40% for 300+ employees.

777th Intelligence Command

Bethesda, Md, Us

• Collaborated with the Software Quality & Security Assurance team to develop a deliberately insecure Flask application, providing a platform to test and enhance Sparrow, a static/dynamic application security testing solution.• Augmented Sparrow's static application security testing (SAST) suite with new ground truths, mitigating 90% of obfuscated OWASP 10 security risks in Flask WebGoat beyond the detection scope of external tools like SonarQube• Implemented server-side rendering for real-time Flask logging to enhance performance and security monitoring, displaying backend processes live and securely deserializing insecure Linux commands on the webpage.

West Lafayette, In, Us

• Contributed to the Infrastructure subteam's goal of improving regex safety, speed, and accuracy.• Deployed web APIs on AWS Lightsail to provide analysis-as-a-service and developed a website using Node.js and Express.js, enabling users to integrate or directly execute these APIs in their browsers according to their preferences.• Connected a MongoDB database to an AWS Lightsail instance using Mongoose to store usage logs of regex inputs and enhanced the website by integrating two additional regex tools, including a visualization package. Conducted a change impact analysis for updating to a safe-regex version.

West Lafayette, Indiana, Us

• Worked in a team to develop large-scale software for NICHES Land Trust, an organization focused on conserving natural habitats in west-central Indiana.• Developed a full-stack web application that tracks items needing removal in parks, integrating geolocation to help volunteers navigate trails and hikes with interactive landmarks and waypoints.• Contributed to backend server development by using Express.js for server-side scripting with Node.js, and MongoDB to create a RESTful API.