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Elvis Oguadinma

Elvis Oguadinma

AI Trainer & Data Contributor

Nigeria flagRemote, Nigeria
$4.00/hrEntry LevelTolokaCVATLabel Studio

Key Skills

Software

TolokaToloka
CVATCVAT
Label StudioLabel Studio
Data Annotation TechData Annotation Tech
Other

Top Subject Matter

Search Relevance
Large Language Models (LLMs)
Natural Language Processing

Top Data Types

TextText
ImageImage
AudioAudio

Top Task Types

Classification
Object Detection
Evaluation Rating
Bounding Box

Freelancer Overview

AI Trainer & Data Contributor. Brings 1+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Toloka, CVAT, and Label Studio. Education includes Bachelor of Social Work, University of Nigeria, Nsukka (2024). AI-training focus includes data types such as Text and labeling workflows including Evaluation, Rating, and Classification.

Entry LevelEnglishIgbo

Labeling Experience

Toloka

AI Trainer & Data Contributor

TolokaText
As an AI Trainer & Data Contributor at Toloka, I performed search relevance evaluation and fine-tuned large language models through data labeling. My work included conducting side-by-side (SbS) comparisons, contributing to reinforcement learning from human feedback (RLHF), and ensuring quality via regular audits. I classified and analyzed text data to support improvements in search algorithms and conversational AI models. • Deep-dive search query analysis for search engine ranking improvements • Side-by-side LLM response comparisons for RLHF • Consistency checks and "Golden Set" audit success • Linguistic text analysis for sentiment, tone, and grammatical accuracy

As an AI Trainer & Data Contributor at Toloka, I performed search relevance evaluation and fine-tuned large language models through data labeling. My work included conducting side-by-side (SbS) comparisons, contributing to reinforcement learning from human feedback (RLHF), and ensuring quality via regular audits. I classified and analyzed text data to support improvements in search algorithms and conversational AI models. • Deep-dive search query analysis for search engine ranking improvements • Side-by-side LLM response comparisons for RLHF • Consistency checks and "Golden Set" audit success • Linguistic text analysis for sentiment, tone, and grammatical accuracy

2025 - Present
CVAT

Data Annotator (Project-based)

CVATTextClassification
I participated in a data annotation project focused on customer-agent support ticket interactions using CVAT and Label Studio. Tasks included multi-label classification, named entity recognition for PII redaction, and emotion annotation to train tone-suggestion models. Over 1,000 support tickets were processed to optimize automated routing systems and extract actionable insights. • Multi-label classification of support tickets • NER for redacting sensitive data • Annotation of emotional markers in interactions • Utilized CVAT and Label Studio for structured annotation

I participated in a data annotation project focused on customer-agent support ticket interactions using CVAT and Label Studio. Tasks included multi-label classification, named entity recognition for PII redaction, and emotion annotation to train tone-suggestion models. Over 1,000 support tickets were processed to optimize automated routing systems and extract actionable insights. • Multi-label classification of support tickets • NER for redacting sensitive data • Annotation of emotional markers in interactions • Utilized CVAT and Label Studio for structured annotation

2024 - Present

Education

U

University of Nigeria, Nsukka

Bachelor of Social Work, Social Work

Bachelor of Social Work
2021 - 2024

Work History

N

N/A

Independent Data Analyst and Trader

Remote
2024 - Present
P

Pinksale

Customer Support Specialist

Remote
2021 - 2025