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Jephthah Odei

@jephthahodei

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STEM AI model trainer and expert data annotator focused on high-quality LLM training data.

Nigeria

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What I'm looking for

I seek remote roles focusing on high-quality data annotation, LLM evaluation, and adversarial testing with clear guidelines, growth, and collaborative feedback.

I am a detail-oriented STEM expert and AI model trainer with advanced training in Data Science and AI (MSc) and a background in Applied Mathematics. I specialize in precise data annotation, multilingual transcription, and creating high-quality labeled datasets that improve LLM and robotics performance.

I have hands-on experience curating structured multilingual datasets, authoring challenging domain-specific problem sets, and performing adversarial testing to identify model weaknesses, biases, and logical errors. I evaluate model outputs for accuracy, coherence, tone, and safety and deliver actionable feedback for model improvement.

My practical tooling experience includes video annotation platforms such as CVAT, Labelbox, and VGG Image Annotator (VIA), plus transcription and time-stamping best practices. I have worked across remote, global projects as a domain expert, video annotation specialist, transcriptionist, and data labeling specialist.

I am comfortable working remotely, receptive to feedback, and committed to consistent, precise work that contributes to safer, more capable AI systems. I bring strong analytical thinking, problem-solving, and multilingual communication skills in English and French to every project.

Experience

Work history, roles, and key accomplishments

Domain Expert AI Trainer

Oneforma by Centific

Jan 2024 - Jan 2025 (1 year)

Curated and annotated multilingual datasets and authored domain-specific problem sets to improve LLM reasoning; evaluated model outputs for accuracy, coherence, and safety and participated in adversarial red-team testing to identify vulnerabilities.

Data Annotation Prompt Engineering Red Team Quality Assurance CVAT Labelbox

LLM Video Annotation Specialist

Oneforma by Centific

Jan 2023 - Jan 2024 (1 year)

Captured timestamped, detailed annotations of robot movements and assessed task outcomes to produce high-quality training data for robotics and AI applications, using industry annotation tools.

Robot Motion Analysis CVAT Labelbox VGG Image Annotator

Audio & Video Transcriptionist

Teemwork.AI

Jan 2021 - Jan 2023 (2 years)

Transcribed and time-stamped audio/video content with attention to noise, stuttering, and formatting guidelines, and edited transcripts to meet quality standards and project specifications.

Transcription Audio Editing Proofreading Quality Assurance Multilingual Transcription

Data Labeling Specialist

TransPerfect DataForce

Jan 2019 - Jan 2021 (2 years)

Produced accurately labeled datasets across images, audio, video, and text for ML training; collaborated with project managers to define annotation guidelines and performed quality checks to ensure consistency.

Data Labeling QA Annotating Collaboration

Search Relevance Evaluator

Oneforma by Centific

Jan 2018 - Jan 2020 (2 years)

Evaluated search engine results for relevance and usefulness, rating web pages, ads, images, and videos against predefined queries to improve search quality and relevance metrics.

Search & Evaluation Search Relevance Content Assessment QA Reporting