Software Engineer → Security Researcher
Interested in Usable Security, Human-Centered Authentication, and Human-AI Interaction
I am a software engineer with 6+ years of experience building secure financial systems at Samsung SDS and the Korean Federation of Community Credit Cooperatives (KFCC). Throughout my career, I have been less interested in technology as an end in itself and more interested in the relationship between people and the systems they depend on.
I am currently preparing to pursue a Master's degree in Computer Science, with a research focus on usable security, human-centered authentication, and human-AI interaction. My long-term goal is to earn a PhD and contribute to the design of secure systems that people can not only use, but confidently trust.
- Usable Security and Human-Centered Authentication
- Human-Computer Interaction for Financial Security Systems
- Biometric and Multi-Factor Authentication UX
- Human-AI Interaction and Trustworthy AI Systems
- Privacy-Preserving Systems
Software Engineer @ Samsung SDS (May 2024 – Present)
Full-stack security engineer working on mobile/browser OTP systems, LLM-based legacy modernization, and financial platform development.
Software Engineer @ Korean Federation of Community Credit Cooperatives (Nov 2019 – Mar 2024)
Core banking developer responsible for biometric authentication systems, interbank transfer networks, and teller terminal infrastructure.
| Project | Organization | Key Focus |
|---|---|---|
| Palm-Vein Biometric Authentication | KFCC | Usable Security, Biometric UX |
| Bulk Interbank Transfer System | KFCC | Security + Usability, Async UX |
| Monimo Financial Platform | Samsung SDS | Human-AI Interaction, Trustworthy AI |
| Mobile OTP / MFA System | Samsung SDS | Authentication, Cryptographic Workflows |
B.E. in Software Engineering — Gachon University (Mar 2012 – Aug 2019)
GPA: 3.84/4.5 (Major: 3.94/4.5)
Completed core coursework in data structures, algorithms, operating systems, databases, and computer networks.
Undergraduate Research Assistant — Gachon University HCI Lab (Jan 2017 – Mar 2017)
Joint research project with Samsung Electronics (Government-Funded).
Feasibility Study on Privacy-Aware Architecture for PPG-Based Wearable Blood Pressure Monitoring.
Languages: Java, C, Python, JavaScript, SQL
Security: Mobile OTP, MFA, Biometric Authentication, Cryptographic Workflows
Infrastructure: FEP, Interbank Networks, Core Banking Modules
Engineering: Spring, Vue.js, Oracle SQL, MSA, TDD, Mockito
AI/ML: LLM, LangChain, Reverse Engineering Agents
I have spent the past three years composing and producing music using Logic Pro.
I am preparing to release my debut album, which has deepened my interest in the intersection of music technology and security — particularly how intelligent creative interfaces can be designed with both usability and privacy in mind.
🇰🇷 Korean (Native) · 🇺🇸 English (Professional) · 🇯🇵 Japanese (Basic)
"Security is ultimately effective only when people can adopt it naturally as part of their everyday workflow."