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Opeyemi Joseph Ajayi

Opeyemi Joseph Ajayi

NLP & Technical Data Annotator | Hugo

Nigeria flagLagos, Nigeria
$35.00/hrExpertOtherImeritMicro1

Key Skills

Software

Other
iMeritiMerit
Micro1
MercorMercor
TolokaToloka
CVATCVAT
Data Annotation TechData Annotation Tech
LabelboxLabelbox
MindriftMindrift

Top Subject Matter

Natural Language Processing (NLP) and LLM Training Data
AI & Automation
Data Labeling

Top Data Types

TextText
DocumentDocument
AudioAudio

Top Task Types

RLHFRLHF
Bounding BoxBounding Box
Text GenerationText Generation
Prompt + Response Writing (SFT)Prompt + Response Writing (SFT)
Entity (NER) ClassificationEntity (NER) Classification
ClassificationClassification
Object DetectionObject Detection
Fine-tuningFine-tuning
Evaluation/RatingEvaluation/Rating
Text SummarizationText Summarization

Freelancer Overview

NLP & Technical Data Annotator | Hugo. Brings 7+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Science, Kogi State University, Anyigba (2018). AI-training focus includes data types such as Text and labeling workflows including RLHF.

ExpertEnglishYoruba

Labeling Experience

NLP & Technical Data Annotator | Hugo

OtherTextRLHF
As an NLP & Technical Data Annotator at Hugo, I produced and validated structured annotation trajectories for LLM training. I decomposed complex natural language prompts into detailed, step-by-step labeled actions, focusing on intent, entity, and sentiment classification. I rigorously enforced annotation quality, validated datasets, and contributed to the improvement of annotation guidelines. • Executed annotation tasks in structured data platforms (JSON, XML, CSV) for large-scale NLP projects. • Utilized web-based annotation tools in agentic workflow simulation environments. • Validated peer work and resolved inconsistencies to maintain project benchmark accuracy. • Collaborated on evolving guidelines and new task types for AI/ML data quality.

As an NLP & Technical Data Annotator at Hugo, I produced and validated structured annotation trajectories for LLM training. I decomposed complex natural language prompts into detailed, step-by-step labeled actions, focusing on intent, entity, and sentiment classification. I rigorously enforced annotation quality, validated datasets, and contributed to the improvement of annotation guidelines. • Executed annotation tasks in structured data platforms (JSON, XML, CSV) for large-scale NLP projects. • Utilized web-based annotation tools in agentic workflow simulation environments. • Validated peer work and resolved inconsistencies to maintain project benchmark accuracy. • Collaborated on evolving guidelines and new task types for AI/ML data quality.

2023 - 2026

Education

K

Kogi State University, Anyigba

Bachelor of Science, Economics

Bachelor of Science
2018 - 2018

Work History

S

Self Employed

AI Automation

Lagos
2025 - Present
F

FlexiSAF Edusoft Limited

Back-End Developer Intern

Abuja
2024 - Present