Every Tuesday · 19:00 KST
T19
T19, short for "Tech at 19:00", is an internal tech-sharing conference held every Tuesday at 7 PM, with participation from all GDG Yonsei members. Each week, 3 presenters share their technical knowledge or experiences.
Google Developer Groups on Campus · Yonsei University
Yonsei University's student developer community. We connect, learn, and grow — then ship what we build.
A student developer community at Yonsei University. We connect, learn and grow together, and turn what we learn into work our community can use.
GDGoC Yonsei is the student developer community at Yonsei University. Members learn with peers through recurring technical sessions, focused team studies, workshops, and collaborative projects. The community brings together students interested in front-end, back-end, mobile, cloud, machine learning and AI, UI/UX, and developer relations. Members turn what they learn into practical work, share their process with one another, and present outcomes through project showcases, demo days, conferences, and hackathons. These activities are designed to help students deepen technical skills, practice communication and leadership, and build solutions for real community needs. This official website documents the people, sessions, and projects behind that work in both English and Korean so students, collaborators, and the wider developer community can follow GDGoC Yonsei’s activities.
A student developer group at Yonsei University that fosters collaboration and shares knowledge about the development ecosystem.
Focused on using technology to address real-world community issues and drive positive social change.
Aims to nurture developers into professionals who contribute to a sustainable society through IT-based solutions.
How members learn, build and share, week after week.
Every Tuesday · 19:00 KST
T19, short for "Tech at 19:00", is an internal tech-sharing conference held every Tuesday at 7 PM, with participation from all GDG Yonsei members. Each week, 3 presenters share their technical knowledge or experiences.
Six parts · studies and workshops
GDG Yonsei is divided into six specialized departments—Front-End, Back-End, ML/AI, Cloud, UI/UX, and Developer Relations—each consisting of a small, select group. These departments conduct studies and workshops to develop advanced technical skills.
Open Tech Project
oTP (Open Tech Project) is a project where teams freely choose a topic and develop a service based on it. The goal is to actively utilize various technologies and solve real-world problems. Ultimately, teams present and share their results at a demo day, fostering growth through the experience.
Google for Developers
We participated in the Solution Challenge, an annual international student development competition organized by Google for Developers, designing and building products that contribute to the UN's Sustainable Development Goals (SDGs). In 2023, 2,100 teams from university GDG chapters worldwide took part, six of them from GDG Yonsei; three of our teams reached the Top 100 and one was selected as a Top 10 finalist. GDG Yonsei achieved the highest award rate among university chapters in South Korea, a result that highlights our group's technical capabilities and social impact.
With GDGoC Korea
Yonsei X Korea Demo Day is an event jointly hosted by GDGoC Yonsei and GDGoC Korea, where participants share their experiences and projects. The goal is to broaden perspectives and foster a wide-reaching network through this collaborative exchange.
Yonsei · Korea · Tokyo · Waseda
The Bridge Hackathon is a joint Korea-Japan hackathon hosted by the GDGoC chapters of Yonsei University, Korea University, the University of Tokyo, and Waseda University. Starting in 2025, it will be held regularly. The event aims to broaden perspectives through interaction with students from different countries and provide hands-on experience in turning ideas into reality through a hackathon format.
Every member joins a part: a small team that studies, runs workshops and builds together.
Aims to design user-friendly pages by leveraging various web technologies and developing web applications that align with the latest tech trends. The focus is on building efficient web structures to optimize the user experience while adhering to sustainable development practices.
Front-End sessionsResponsible for server and infrastructure development. Members give presentations and engage in open discussions on topics of interest, ranging from server domain design (such as DDD, MSA, JPA) to infrastructure during team session.
Back-End sessionsFocus on understanding and applying machine learning and artificial intelligence models. In weekly team session, members explore and present AI topics of interest, followed by open discussions.
ML/AI sessionsThe newly established Cloud team this term focuses on learning cloud technologies for service deployment and applying them to real projects. They utilize various cloud technologies to efficiently deploy and manage multiple services.
Cloud sessionsThe UI/UX team works on improving service structures to enhance user experience. They collaborate with the Front-End team to research various methods for improving user experience and apply them to real projects.
UI/UX sessionsDevRel plans and manages community activities, publishes weekly insights on industry and internal events, connects internal and external communities, supports joint events and expert consultations, and fosters a sustainable community culture through industry-academia collaboration.
DevRel sessionsRecruiting news goes out on Instagram first.


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Seoul Festival Explorer: RAG(Retrieval-Augmented Generation) based Personalized City Guide & Smart Festival Recommender
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A customised note-sharing (note-exchange) website for Yonsei University students.

25-26
AI scheduler program based on lecture material input