Resume / About Me
Hello! I am Uoosnn, a System Engineer who integrates software development experience into infrastructure operations. With a deep understanding of code, I go beyond simple server management to proactively analyze bottlenecks and build stable system environments.
🛠️ Tech Skills
- OS & Infrastructure: Linux (RPM-based), Windows Server, Proxmox, XenServer
- Server Environment: APM, NPM environment setup and operation
- Languages: C++
- Tools & Version Control: Git
- Cloud & Containers (Basic usage & experience): AWS, NCP, NHN Cloud, Docker
💼 Experience
- HostCenter | System Engineer (Senior)
- 2021.11 ~ Present
- Key Responsibilities: Leading large-scale infrastructure architecture consulting, hybrid cloud deployments, and troubleshooting
- Key Responsibilities & Achievements (Senior Engineer Focus):
- Public Sector Large-Scale Infrastructure Architecture & Cost Optimization Consulting
- Collaborated with clients and developers to forecast real user volumes and traffic, designing optimized Load Balancing architectures and network integration topologies with security appliances.
- Considering limited public sector budgets, led efficient infrastructure deployments by proposing a Total Cost of Ownership (TCO) forecast model tailored to service requirements and instance specifications.
- Hybrid Cloud Deployment & Large-Scale Infrastructure Migration
- Executed bidirectional cloud (NHN, NCP) ↔ on-premises migrations ranging from single-server setups to entire infrastructure scales.
- Built secure hybrid architectures interconnecting cloud environments with on-premises physical security appliances and servers using NHN Colocation Gateway.
- Full-Stack Troubleshooting & Crisis Management for Major Security Incidents
- Provided comprehensive technical support spanning performance tuning and incident resolution for Web/WAS/DB (Apache, Tomcat, PHP, MariaDB, etc.) to L2/L3 network routing and firewall policy operations within data centers (IDC).
- During major security breach incidents, led joint task forces with internal departments (Sales) and client stakeholders to design rapid incident recovery processes and recurrence prevention architectures.
- Data-Driven Proactive Infrastructure Monitoring & Service Optimization
- Built an integrated monitoring environment utilizing the Zabbix and ELK (Elastic, etc.) stack, conducting log analysis-based network traffic anomaly detection.
- Analyzed monthly system resource trends to identify bottleneck zones, maximizing service availability by proposing proactive infrastructure scaling and tuning strategies to clients prior to any system degradation or failure.
- Leading IDC Relocation & Network Integration via Multi-Organizational Collaboration
- Served as the Infrastructure/Network Technical Lead in data center relocation and third-party solution integration projects.
- Established flexible communication channels (email, collaboration tools, etc.) with external vendors and partners, enabling immediate troubleshooting and seamless project completion without schedule delays.
- Public Sector Large-Scale Infrastructure Architecture & Cost Optimization Consulting
🚀 Projects & Activities
- Graduation Project: Anger Control Disorder
- Tutoring Project: Coline Incubator
🎓 Education
- Tech University of Korea | Game Engineering (Transfer)
- 2019 ~ 2025
✉️ Contact
- Email: [email protected] / [email protected]
- GitHub (Main): https://github.com/wsj2681
- GitHub (Sub): https://github.com/uoosnn
- Notion: Resume & Portfolio Notion