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J

John Nwokedi

Cybersecurity Analyst - Data Labeling for Threat Detection AI

Nigeria flagLagos, Nigeria
$6.00/hrExpertClickworkerAxiom AIData Annotation Tech

Key Skills

Software

ClickworkerClickworker
Axiom AI
Data Annotation TechData Annotation Tech
Micro1
MercorMercor

Top Subject Matter

Cybersecurity Domain Expertise
IT Operations Monitoring
AI/NLP Evaluation

Top Data Types

TextText
VideoVideo
ImageImage

Top Task Types

ClassificationClassification
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)

Freelancer Overview

Cybersecurity Analyst - Data Labeling for Threat Detection AI. Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Technology, Federal University of Technology, Minna (2020). AI-training focus includes data types such as Text and Video and labeling workflows including Classification and Prompt + Response Writing (SFT).

ExpertEnglishIgbo

Labeling Experience

IoT Security Data Annotator

VideoClassification
Organized and labeled unstructured video and sensor data from IoT security systems for training searchable AI databases. Developed and applied a custom tagging schema for IoT device behavior to improve detection of unauthorized network access. Integrated real-time data streams into labeled datasets supporting machine learning for security monitoring. • Tagged surveillance videos for pattern analysis. • Modeled IoT behaviors with structured labels. • Enhanced unauthorized access detection via annotation. • Supported automated monitoring by preparing labeled video datasets.

Organized and labeled unstructured video and sensor data from IoT security systems for training searchable AI databases. Developed and applied a custom tagging schema for IoT device behavior to improve detection of unauthorized network access. Integrated real-time data streams into labeled datasets supporting machine learning for security monitoring. • Tagged surveillance videos for pattern analysis. • Modeled IoT behaviors with structured labels. • Enhanced unauthorized access detection via annotation. • Supported automated monitoring by preparing labeled video datasets.

2023 - Present

AI Prompt Engineer & LLM Evaluator

TextPrompt Response Writing SFT
Authored, refined, and evaluated over 300 complex prompts to test AI capabilities in cybersecurity and customer service scenarios. Carried out rank-and-sort evaluations of LLM outputs for accuracy, safety, and appropriate tone. Provided feedback to optimize large language model performance and content safety mechanisms. • Designed prompts to test AI edge and reasoning cases. • Conducted rank-and-sort and evaluation/assessment of outputs. • Provided quality scoring for factuality and safety. • Supported development of AI conversational agents.

Authored, refined, and evaluated over 300 complex prompts to test AI capabilities in cybersecurity and customer service scenarios. Carried out rank-and-sort evaluations of LLM outputs for accuracy, safety, and appropriate tone. Provided feedback to optimize large language model performance and content safety mechanisms. • Designed prompts to test AI edge and reasoning cases. • Conducted rank-and-sort and evaluation/assessment of outputs. • Provided quality scoring for factuality and safety. • Supported development of AI conversational agents.

2023 - Present

Cybersecurity Analyst - Data Labeling for Threat Detection AI

TextClassification
Curated and labeled over 50,000 security log entries to train automated anomaly detection models for cybersecurity. Developed and standardized annotation guidelines for junior analysts to improve cross-annotator reliability. Translated complex technical vulnerabilities into structured, natural language datasets for internal AI training tools. • Labeled security log entries to enhance model performance. • Improved threat classification accuracy through structured annotations. • Provided leadership in annotation workflow design and quality. • Established standards to increase data consistency across teams.

Curated and labeled over 50,000 security log entries to train automated anomaly detection models for cybersecurity. Developed and standardized annotation guidelines for junior analysts to improve cross-annotator reliability. Translated complex technical vulnerabilities into structured, natural language datasets for internal AI training tools. • Labeled security log entries to enhance model performance. • Improved threat classification accuracy through structured annotations. • Provided leadership in annotation workflow design and quality. • Established standards to increase data consistency across teams.

2022 - Present

IT Operations & Monitoring Specialist - Data Annotation

TextClassification
Managed and tagged operational metadata related to server workflows to support automated recovery AI systems. Identified and categorized over 1,000 system behavioral patterns for technical root cause analysis. Collaborated with developers to structure system logs for machine learning ingestion. • Performed metadata tagging for enhanced operational analytics. • Enabled ML training with structured log categorization. • Improved server workflow analysis via annotation. • Supported engineering with labeled behavioral datasets.

Managed and tagged operational metadata related to server workflows to support automated recovery AI systems. Identified and categorized over 1,000 system behavioral patterns for technical root cause analysis. Collaborated with developers to structure system logs for machine learning ingestion. • Performed metadata tagging for enhanced operational analytics. • Enabled ML training with structured log categorization. • Improved server workflow analysis via annotation. • Supported engineering with labeled behavioral datasets.

2021 - 2022

Education

F

Federal University of Technology, Minna

Bachelor of Technology, Cyber Security Science

Bachelor of Technology
2015 - 2020

Work History

F

FMCG Distribution Limited

ICT Security Officer and IT Security Expert

Lagos
2021 - Present