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N

Ndongo Mindjeme

AI Trainer & Data Annotation Specialist

USA flag
Hyattsville, Usa
$30.00/hrIntermediateLabelboxInternal Proprietary Tooling

Key Skills

Software

LabelboxLabelbox
Internal/Proprietary Tooling

Top Subject Matter

Large Language Model Evaluation and Agent Systems
Cybersecurity in LLMs and Model Safety
Legal Services & Contract Review

Top Data Types

TextText
DocumentDocument

Top Task Types

Red Teaming
RLHF
Text Summarization
Data Collection
Evaluation Rating

Freelancer Overview

AI Trainer & Data Annotation Specialist. Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Master of Science, University of Maryland Global Campus (2025) and Bachelor of Science, American Public University (2016). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Red Teaming.

IntermediateEnglish

Labeling Experience

AI Trainer Fellow – Model Validation Expert-2

TextRed Teaming
In the AI Trainer Fellow – Model Validation Expert-2 role, I evaluated adversarial prompts targeting LLM cybersecurity vulnerabilities and unsafe outputs. I identified critical model failure modes, including jailbreaks and prompt injections. I designed red teaming frameworks and developed evaluation rubrics for model quality and alignment. • Implemented red team evaluations to systematically test model robustness. • Detected and documented 15+ critical failure modes across agent systems. • Created structured rubrics for refusal quality and safety evaluations. • Contributed to continuous improvement in benchmarking and model validation practices.

In the AI Trainer Fellow – Model Validation Expert-2 role, I evaluated adversarial prompts targeting LLM cybersecurity vulnerabilities and unsafe outputs. I identified critical model failure modes, including jailbreaks and prompt injections. I designed red teaming frameworks and developed evaluation rubrics for model quality and alignment. • Implemented red team evaluations to systematically test model robustness. • Detected and documented 15+ critical failure modes across agent systems. • Created structured rubrics for refusal quality and safety evaluations. • Contributed to continuous improvement in benchmarking and model validation practices.

2025 - Present

AI Trainer & Data Annotation Specialist

Text
As an AI Trainer & Data Annotation Specialist, I evaluated outputs from large language models and autonomous agent systems using structured rubrics. I annotated datasets for AI training involving classification, ranking, and quality scoring tasks. I reviewed multi-step agent workflows and provided actionable feedback for benchmarking and model improvement. • Calibrated evaluations to ensure consistency and alignment among team members. • Detected edge cases, model failures, and systemic weaknesses across AI models. • Documented findings and communicated insights to stakeholders. • Quickly adapted to evolving guidelines and ambiguous task environments.

As an AI Trainer & Data Annotation Specialist, I evaluated outputs from large language models and autonomous agent systems using structured rubrics. I annotated datasets for AI training involving classification, ranking, and quality scoring tasks. I reviewed multi-step agent workflows and provided actionable feedback for benchmarking and model improvement. • Calibrated evaluations to ensure consistency and alignment among team members. • Detected edge cases, model failures, and systemic weaknesses across AI models. • Documented findings and communicated insights to stakeholders. • Quickly adapted to evolving guidelines and ambiguous task environments.

2025 - Present

Education

U

University of Maryland Global Campus

Master of Science, Cybersecurity Technology

Master of Science
2024 - 2025
A

American Public University

Bachelor of Science, Accounting

Bachelor of Science
2012 - 2016

Work History

B

Bonaberi Shipping & Moving Inc

IT Systems & Security Specialist

Hyattsville
2019 - Present