Michael Chinaza

Key Skills

Software

Appen

Remotasks

Scale AI

Other

Top Subject Matter

General AI Data Annotation

Nlp Domain Expertise

Conversational AI

Top Data Types

Text

Image

Audio

Document

Top Task Types

Classification

Segmentation

Object Detection

Data Collection

Freelancer Overview

AI Annotation Specialist – Appen / Freelance Projects. Brings 8+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Appen, Remotasks, and Scale AI. Education includes Bachelor of Science, National Open University and Bachelor of Science, Alex Ekwueme University. AI-training focus includes data types such as Text, Image, and Audio and labeling workflows including Classification, Segmentation, and Object Detection.

Labeling Experience

AI Annotation Specialist – Appen / Freelance Projects

AppenTextClassificationSegmentation

I labeled and annotated large text, image, and audio datasets to support AI model training and improve data quality. I reviewed labels for accuracy and made corrections to ensure consistency. I collaborated with global teams using remote tools and consistently met deadlines for project delivery. • Maintained over 98% labeling accuracy across modalities. • Corrected mislabeled data to enhance AI model performance. • Consistently adhered to quality and annotation standards. • Delivered annotation work in a remote freelance environment.

I labeled and annotated large text, image, and audio datasets to support AI model training and improve data quality. I reviewed labels for accuracy and made corrections to ensure consistency. I collaborated with global teams using remote tools and consistently met deadlines for project delivery. • Maintained over 98% labeling accuracy across modalities. • Corrected mislabeled data to enhance AI model performance. • Consistently adhered to quality and annotation standards. • Delivered annotation work in a remote freelance environment.

2022 - Present

AI Data Evaluator – Remotasks

RemotasksTextClassification

As an AI Data Evaluator, I assessed AI-generated textual content for relevance, correctness, and quality. I provided structured human feedback to help optimize and retrain NLP models. I ensured all tasks met annotation guidelines and quality metrics. • Evaluated accuracy and context of natural language output. • Improved model compliance with project benchmarks. • Contributed to conversational AI and moderation system development. • Delivered consistent evaluations using platform tools.

As an AI Data Evaluator, I assessed AI-generated textual content for relevance, correctness, and quality. I provided structured human feedback to help optimize and retrain NLP models. I ensured all tasks met annotation guidelines and quality metrics. • Evaluated accuracy and context of natural language output. • Improved model compliance with project benchmarks. • Contributed to conversational AI and moderation system development. • Delivered consistent evaluations using platform tools.

2021 - 2022

AI Data Labeling Associate – Scale AI / Freelance

Scale AITextClassificationObject Detection

In my role as AI Data Labeling Associate, I annotated and categorized textual data for sentiment and classification, and tagged images for training purposes. I performed quality assurance checks to maintain data integrity. I optimized workflow processes by addressing and resolving annotation errors. • Labeled data for sentiment, topic classification, and image recognition. • Performed QA and improved annotation uniformity. • Utilized productivity tools to meet project goals. • Labeled datasets for AI model fine-tuning.

In my role as AI Data Labeling Associate, I annotated and categorized textual data for sentiment and classification, and tagged images for training purposes. I performed quality assurance checks to maintain data integrity. I optimized workflow processes by addressing and resolving annotation errors. • Labeled data for sentiment, topic classification, and image recognition. • Performed QA and improved annotation uniformity. • Utilized productivity tools to meet project goals. • Labeled datasets for AI model fine-tuning.

2020 - 2021

AI Research Support Assistant – Independent Projects

OtherTextData CollectionClassification

I supported AI research by collecting and preparing datasets and supporting annotation documentation. I designed labeling guides to standardize project quality. I worked on analysis of dataset trends to improve research dataset utility. • Designed and maintained annotation quality standards. • Assisted in foundational AI data preparation. • Analyzed data for usability improvements. • Worked on early-stage small-scale AI research annotation datasets.

I supported AI research by collecting and preparing datasets and supporting annotation documentation. I designed labeling guides to standardize project quality. I worked on analysis of dataset trends to improve research dataset utility. • Designed and maintained annotation quality standards. • Assisted in foundational AI data preparation. • Analyzed data for usability improvements. • Worked on early-stage small-scale AI research annotation datasets.

2019 - 2020

Education

Work History