Katherine Effendi
@katherineeffendi
Aspiring cybersecurity analyst with hands-on threat detection and incident investigation.
United StatesWhat I'm looking for
I am an aspiring cybersecurity analyst with practical experience from TryHackMe labs and hands-on IT roles, complemented by Google Cybersecurity and CompTIA Security+ certifications. I have analyzed security alerts, investigated phishing campaigns, and detected anomalies across Windows and Linux environments while maintaining rigorous data accuracy.
My professional background includes improving search relevance and data quality at TikTok U.S. Data Security and enhancing AI model accuracy at Tesla through precise annotation and QA. I bring a detail-oriented, process-improvement mindset and a foundation in IT support and asset management, ready to contribute to threat detection and security operations.
Experience
Work history, roles, and key accomplishments
Search Operations Specialist
TikTok U.S. Data Security
Jul 2023 - Sep 2025 (2 years 2 months)
Improved product search relevance by analyzing queries and evaluating results to enhance user engagement, maintained 95%+ data accuracy across projects, and optimized workflows by recommending process improvements based on search error trends.
TIData Annotation Specialist
Tesla, Inc.
Jan 2021 - Jun 2022 (1 year 5 months)
Enhanced AI model accuracy through precise data labeling and validation, consistently achieved 98% annotation accuracy and was promoted to QA while collaborating with engineers to improve labeling workflows.
Information Technology Intern
San Francisco General Hospital
Jun 2014 - Aug 2014 (2 months)
Configured and deployed laptops and software for new employees to improve onboarding efficiency, troubleshot technical issues to provide timely solutions, and maintained IT asset records for accurate tracking.
Education
Degrees, certifications, and relevant coursework
SUSan Jose State University
Bachelor of Science in Business Administration, Management Information Systems
B.S. in Business Administration with a concentration in Management Information Systems from San Jose State University.
Availability
Location
United StatesAuthorized to work in
Job categories
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