Christopher D.

Key Skills

Software

No software listed

Top Subject Matter

AI training and evaluation datasets

text and multimedia labeling

Dataset quality auditing and validation for AI training

Top Data Types

Text

Audio

Image

Document

Top Task Types

Text Generation

Prompt + Response Writing (SFT)

Question Answering

Object Detection

Point/Key Point

Classification

Freelancer Overview

Education includes Master of Science, University of Lagos (2021) and Bachelor of Science, Ahmadu Bello University (2018). AI-training focus includes data types such as Text and Audio and labeling workflows including Evaluation and Rating.

Labeling Experience

Senior AI Data Specialist — Intelligent Data Analytics Solutions (2023–Present)

Audio

Serves as a Senior AI Data Specialist leading data annotation and evaluation projects across text, image, audio, and video datasets. Improved annotation consistency through advanced quality assurance procedures and reviewer calibration, reducing labeling discrepancies and sustaining high quality scores. Performed pairwise comparison assessments to enhance AI response relevance, accuracy, and safety while maintaining aggressive deadlines. • Managed large-scale multi-modal annotation quality initiatives • Implemented guideline development to standardize labeling • Applied pairwise comparison to evaluate model response behavior • Supported reviewer calibration and continuous QA improvements.

2023 - Present

AI Data Quality Analyst — Digital Intelligence Technologies (2021–2023)

Text

Worked as an AI Data Quality Analyst validating large-scale datasets used for machine learning and AI training. Identified and resolved data inconsistencies to improve dataset reliability and reduced review cycle time via structured validation frameworks. Processed and reviewed a high volume of data entries while maintaining strict accuracy standards and producing performance/quality reports. • Conducted dataset auditing and quality evaluation • Investigated inconsistencies and drove corrective actions • Implemented validation frameworks to streamline reviews • Produced reporting to inform strategic decisions.

2021 - 2023

Data Annotation Specialist — Insight Data Services (2019–2021)

Text

Served as a Data Annotation Specialist annotating and categorizing text, image, and multimedia content for AI training and evaluation. Maintained high annotation accuracy across high-volume projects while meeting productivity targets. Participated in benchmark testing to improve annotation precision and reduce rework for downstream model use. • Produced consistent labeled outputs for text-related tasks • Applied quality controls to prevent labeling errors • Supported onboarding and mentoring to improve team performance • Helped refine evaluation workflows via benchmarking feedback.

2019 - 2021

Education

Work History