Artur Yoo
Los Angeles,U.S.A.
Summary
Cybersecurity and IT professional with hands-on experience in penetration testing, backend development, systems troubleshooting, and database administration. Skilled in identifying security vulnerabilities, improving application security, supporting Windows/macOS/Linux environments, and developing secure backend services. Strong foundation in networking, secure software development, and technical problem-solving with experience collaborating across technical teams. Seeking opportunities in cybersecurity, IT operations, SOC analysis, systems administration, cloud security, or software engineering.
Overview
5
5
years of professional experience
1
1
Certification
Work History
Volunteer
Tech Club at Loyola Marymount University (LMU)
08.2021 - 05.2026
- Resolved hardware issues to ensure proper computer functionality
- Assisted colleagues in troubleshooting macOS and Windows computer issues to maintain workflow.
- Organized workshops on emerging technologies to engage students and promote learning.
- Led discussions on industry trends to increase member knowledge and awareness.
Backend Developer
Hakam Comunicação
06.2024 - 08.2024
- Developed backend services using Node.js and Express frameworks.
- Refactored server-side logic across 2+ environments, eliminating insecure error handling and reducing exploitable attack surface
- Managed 3+ SQL databases in production, enforced access controls, and optimized query performance to enhance data security and retrieval speed
- Collaborated with frontend teams to seamlessly integrate user-facing elements with server-side logic, improving overall application responsiveness.
Cyber Security Penetration Tester and Intern
Clean Cloud
06.2021 - 08.2021
- Conducted penetration tests on Linux server environments, identifying 10+ vulnerabilities across authentication, privilege escalation, and network vectors; delivered remediation reports fully adopted by the security team
- Designed and executed phishing simulations targeting 30+ employees, recording an initial click rate of ~35% and informing retraining efforts that measurably reduced susceptibility
- Overhauled security protocols for 40+ employees, enhancing email hygiene, password policy, and access controls to improve overall security posture
- Managed 3+ SQL databases in production, enforcing access controls and optimizing query performance to support reliable data access
- Refactored server-side logic in 2+ environments, eliminating insecure error handling to mitigate vulnerabilities and reduce exploitable attack surface
Education
B.S. - Computer Science
Loyola Marymount University
Los Angeles, CA05-2026
Skills
Technical Skills
Cybersecurity
- Penetration Testing
- Vulnerability Assessment
- Security Awareness Training
- Security Hardening
- Access Control Management
- Authentication & Privilege Escalation Analysis
- Secure Software Development
- Cybersecurity Fundamentals
Programming & Scripting
- Python
- JavaScript
- Java
- Rust
- Ruby
- SQL
Frameworks & Tools
- Nodejs
- Expressjs
- MySQL
- Git/GitHub
- Visual Studio Code
Operating Systems
- Windows
- macOS
- Linux
IT & Infrastructure
- Technical Troubleshooting
- Database Administration
- Hardware Support
- Systems Optimization
- Backend Development
- Workflow Support
Certification
CompTIA Security+
Projects
- Programmed AI that converted propositional logic formula into Conjunctive Normal Form (CNF), https://github.com/cmsi3300-02-fall24/homework4-artur-jayden/tree/main
- Programmed AI used by a robot to traverse a maze using sensors and cameras, https://github.com/cmsi3300-02-fall24/homework2-artur-jayden
Personal Information
Location Preference: Anywhere in the U.S.A.
Hobbies
- Soccer
- PC building
- Jiu Jitsu
- Reading KrebsOnSecurity, CSO Online, etc...
Timeline
Backend Developer
Hakam Comunicação
06.2024 - 08.2024
Volunteer
Tech Club at Loyola Marymount University (LMU)
08.2021 - 05.2026
Cyber Security Penetration Tester and Intern
Clean Cloud
06.2021 - 08.2021
B.S. - Computer Science
Loyola Marymount University