Joon Noh

Linux Systems Administrator

Visa

Achieved high availability and reduced impacts to core infrastructure/services at Visa data centers by troubleshooting/resolving incidents, analyzing logs, documenting procedures using Confluence, and automating manual tasks using Python and Shell scripts

Enabled secure/reliable financial transactions through Linux server installations, migrations, patching, configuration, breakfixes, and security remediation for 3500+ production servers in 24/7 global environment

Ensured system health and prevented issues with connections between client endpoints and Visa payment processing network by proactively monitoring alerts in Splunk and IBM Netcool

Attained 100% SLA/OLA and zero business impacts during tenure through ITIL change management

Upheld company brand by providing prompt technical support to clients and internal teams

Responded to high priority incident calls by quickly remediating loss of critical systems/applications, mitigating risk, and investigating root cause

Data Management Administrator

Giesecke & Devrient

Automated manual quality checks, XML parsing, and file management by developing Windows desktop application in C#, reducing time and effort needed for administrators to review data accuracy

• User inputs internal job number into GUI and is presented with centralized hub of information
• Designed to parse XML files on Sharepoint, compare values to processed data, provide shortcut links to relevant files, and screenshot logs
• This tool saves time and effort by speeding up the QC process and making it easy to check for errors

Modified Python and Windows batch file scripts to streamline data processing

Installed and managed hardware security modules (HSM) and key handling systems (KHS) to allow for secure transfer and utilization of encryption keys

Processed data for smart card personalization, testing, and production

Business IT Specialist

Five Guys

Provided on-call technical support for six stores by resolving workstation/networking issues, installing and updating hardware/software, backing up data, securing computer usage, and communicating with staff/vendors

Projects

Cloud Serverless Resume - injoonuity.com (this website!)

Deployed HTML + CSS webpage as Amazon S3 static website, using CloudFront for HTTPS, Route 53 for custom domain name, and Git/GitHub for version control system

Built JavaScript visitor counter that sends HTTP request to REST API Gateway, triggering Lambda function written in Python that updates DynamoDB table and retrieves item value

Automated AWS resources as Infrastructure as Code (IaC) using Terraform and DevOps CI/CD pipeline using GitHub Actions

Homelab

Created, configured, and cloned RHEL/CentOS/Ubuntu virtual machines using Oracle VM VirtualBox

Managed network settings, files, storage, users, groups, services, and firewalls via command line interface (CLI)

Automated file compression, archiving, web scraping, and spreadsheet manipulation by writing Bash and Python scripts using Selenium and EZSheets modules