Sunryeok Kim

• Maintained up-to-date knowledge of industry trends, ensuring the provision of cutting-edge solutions to client challenges.
• Conducted root cause analysis of recurrent problems to prevent future occurrences and improve overall system stability.
• Developed comprehensive documentation for internal, simplifying complex concepts and procedures.
• Assisted sales team with pre-sales technical consultations, demonstrating product capabilities to potential customers.
• Managed escalated cases efficiently, liaising between customers and development teams to ensure prompt resolution of issues.

The role required in-depth knowledge and hands-on experience in the following technical areas, all of which I am proficient in:

• Cloud platforms such as AWS, GCP, and Azure
• Containerization and orchestration technologies including Kubernetes, Docker, and ECS/Fargate
• Infrastructure as Code (IaC) using tools like Terraform and Helm
• Log, metrics, and trace monitoring using Datadog’s observability platform
• Scripting with Python
• Distributed tracing and performance profiling for web applications
• Security monitoring using technologies such as eBPF, AppSec, and Cloud Security Posture Management (CSPM)
• Network monitoring and troubleshooting (e.g., TCP/IP, DNS, TLS handshake analysis)
• CI/CD pipeline integration and monitoring (e.g., GitHub Actions, GitLab CI/CD)
• Troubleshooting runtime environments across Linux, containers, and cloud-native applications
• Customer-facing debugging and root cause analysis of complex distributed systems

• Conducted root cause analysis of technical issues, implementing preventive measures for future occurrences.
• Developed comprehensive troubleshooting guides for internal use, improving team knowledge and performance.
• Provided remote real-time session to clients, ensuring timely resolution of software and hardware concerns.
• Mentored junior members of the team on best practices in issue resolution techniques.
• Served as an escalation point for challenging technical inquiries, demonstrating expertise in product knowledge and problem-solving abilities.
• Provided operational advice regarding resource management, patching/updates, deployment, and/or configuration of virtualized server infrastructure
• Worked with development team for root-causing newly found bug and arranging future fix

The role required in-depth knowledge and hands-on experience in the following technical areas, all of which I am proficient in:

- Log and memory dump analysis
- Storage system such as iSCSI, FCoE, NFS, LVM
- File system such as VMFS, xfs, ext4
- Monitoring through SNMP, Zabbix
- TCP/IP network, VLAN, load balancing
- TLS/SSL certificate, encryption algorithm
- Windows Server, Redhat, Ubuntu, Photon
- Active Directory, Open LDAP
- Security vulnerability Issue
- Traceability management using Syslog
- Upgrade and patching
- Shell script (bash etc.)
- Device driver and firmware
- BIOS and UEFI, OS boot sequence
- IPMI, CIM and hardware sensor
- Programming language such as C, C++, Java, Python
- Web related technologies including Tomcat, Apache, nginx
- GUI framework such as Angular, Clarity
- Issue reproduction using testbed environment.
- Bug reporting and interfacing with development team
- Real time trouble shooting on Zoom