Joy N.

Key Skills

Software

Other

Telus

Appen

Labelbox

Label Studio

Clickworker

Mindrift

Toloka

Top Subject Matter

Computer vision (video understanding)

STEM education support operations

LLM prompting

Top Data Types

Video

Document

Text

Image

Top Task Types

Action Recognition

Data Collection

Prompt + Response Writing (SFT)

Classification

Object Detection

RLHF

Fine-tuning

Bounding Box

Freelancer Overview

Video Annotation Specialist — GideonTech International. Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other, Telus, and Appen. Education includes Master of Education, University of Ibadan and Bachelor of Science (Education), Ambrose Alli University. AI-training focus includes data types such as Video, Document, and Text and labeling workflows including Action Recognition, Data Collection, and Prompt + Response Writing (SFT).

Labeling Experience

Customer Support Virtual Assistant — Blueminds International Academy

OtherDocumentData Collection

Matched students with tutors for STEM subjects while handling daily client support operations. Prepared and organized academic documents and Excel reports to support learning workflows. Managed customer inquiries and follow-ups to ensure smooth service delivery. • Student-tutor matching for STEM • Academic document preparation and reporting • 95% satisfaction rating on support • Ongoing client support operations

2024 - Present

Video Annotation Specialist — GideonTech International

OtherVideoAction Recognition

Annotated 650+ video datasets for computer vision model training with an average 98% QA score. Tagged objects, actions, gestures, and events across video sequences according to annotation guidelines. Performed regular self-reviews to maintain consistent label quality. • 650+ labeled video dataset instances • Object, action, gesture, and event tagging • 98% average QA performance • Compliance with annotation guidelines and self-review

2025 - 2025

Prompt Writer & Annotation Specialist — Steller

OtherTextPrompt + Response Writing (SFT)

Designed and optimized 1,000+ prompts to improve AI model outputs by 25%. Annotated and validated text and conversational datasets, reducing labeling errors by 17%. Collaborated with global teams to streamline annotation workflows and raise productivity. • 1,000+ prompts optimized • Text and conversational dataset validation • Reduced labeling errors by 17% • Prompt template reuse to cut task creation time by 30%

2022 - 2024

AI Data Annotator & Content Reviewer — Telus International

TelusText

Reviewed and tagged 800+ datasets across classification, QA, and sentiment projects. Achieved 98%+ QA scores while ensuring compliance with quality benchmarks. Delivered structured feedback that improved annotation consistency by 15% and supported training dataset development. • 800+ datasets reviewed and tagged • 98%+ QA compliance performance • Feedback improving annotation consistency by 15% • Training support improving sentiment accuracy by 10%

2023 - 2023

AI Contributor & Data Labeler — Appen

AppenTextClassification

Annotated over 1,200 datasets for NLP and computer vision training. Maintained 98%+ QA accuracy ratings through consistent quality checks. Supported prompt tuning and linguistic evaluation for LLM projects, reducing annotation errors by 15%. • 1,200+ datasets annotated • 98%+ QA accuracy • Prompt tuning and linguistic evaluation support • Reduced annotation errors by 15%

2021 - 2022

Education

Work History