Athanas Mcelson

Key Skills

Software

CVAT

Labelbox

Prodigy

Top Subject Matter

Computer Vision

Natural Language Processing

Speech Recognition

Top Data Types

Image

Text

Audio

Document

Top Task Types

Bounding Box

Classification

Transcription

Prompt Response Writing SFT

Freelancer Overview

Freelance Data Labeler & AI Trainer. Brings 6+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include CVAT, Labelbox, and Prodigy. Education includes High School Diploma, Mbeya Region High School. AI-training focus includes data types such as Image, Text, and Audio and labeling workflows including Bounding Box, Classification, and Transcription.

Labeling Experience

Freelance Data Labeler & AI Trainer

ProdigyAudioTranscription

I processed, transcribed, timestamped, and labeled over 500 audio files for various AI training applications. This included working on speech-to-text conversion, speaker diarization, and voice command recognition. My careful attention to detail ensured high-accuracy audio datasets for training advanced speech models. • Transcribed and labeled audio data for speech AI systems. • Created accurate timestamps and speaker annotations. • Reviewed and validated audio labels for consistency. • Used software such as Prodigy and Scale AI for workflow.

I processed, transcribed, timestamped, and labeled over 500 audio files for various AI training applications. This included working on speech-to-text conversion, speaker diarization, and voice command recognition. My careful attention to detail ensured high-accuracy audio datasets for training advanced speech models. • Transcribed and labeled audio data for speech AI systems. • Created accurate timestamps and speaker annotations. • Reviewed and validated audio labels for consistency. • Used software such as Prodigy and Scale AI for workflow.

2023 - Present

Freelance Data Labeler & AI Trainer

LabelboxTextClassification

In this role, I labeled and categorized over 20,000 text entries for intent detection, topic classification, sentiment analysis, and named entity recognition. I adhered strictly to annotation guidelines and performed regular quality validation to ensure dataset accuracy. My efforts contributed to the refinement of NLP models for downstream tasks. • Classified text samples for sentiment and topic analysis. • Conducted quality reviews and edited misclassifications. • Worked on entity recognition and intent labeling projects. • Utilized Labelbox and Prodigy for annotation tasks.

In this role, I labeled and categorized over 20,000 text entries for intent detection, topic classification, sentiment analysis, and named entity recognition. I adhered strictly to annotation guidelines and performed regular quality validation to ensure dataset accuracy. My efforts contributed to the refinement of NLP models for downstream tasks. • Classified text samples for sentiment and topic analysis. • Conducted quality reviews and edited misclassifications. • Worked on entity recognition and intent labeling projects. • Utilized Labelbox and Prodigy for annotation tasks.

2023 - Present

Freelance Data Labeler & AI Trainer

CVATImageBounding Box

As a Freelance Data Labeler & AI Trainer, I manually labeled and annotated over 10,000 images using CVAT and other annotation tools. My work involved drawing bounding boxes, polygons, keypoints, and semantic segmentation masks to support computer vision model training. I also performed quality assurance and provided feedback to improve annotation consistency. • Labeled image datasets for object detection and segmentation tasks. • Used CVAT, Labelbox, Prodigy, and Scale AI platforms. • Collaborated closely with engineers and project managers to improve workflows. • Developed documentation to standardize onboarding and training processes.

As a Freelance Data Labeler & AI Trainer, I manually labeled and annotated over 10,000 images using CVAT and other annotation tools. My work involved drawing bounding boxes, polygons, keypoints, and semantic segmentation masks to support computer vision model training. I also performed quality assurance and provided feedback to improve annotation consistency. • Labeled image datasets for object detection and segmentation tasks. • Used CVAT, Labelbox, Prodigy, and Scale AI platforms. • Collaborated closely with engineers and project managers to improve workflows. • Developed documentation to standardize onboarding and training processes.

2023 - Present

Content Creator & AI Prompt Specialist

TextPrompt Response Writing SFT

As a Content Creator & AI Prompt Specialist, I designed and authored high-quality prompts and responses to fine-tune large language models. I curated, cleaned, and labeled datasets to ensure factual accuracy and linguistic diversity for AI training. My responsibilities also involved evaluating AI outputs for alignment and maintaining datasets for further model development. • Crafted instructional content for model SFT. • Labeled and cleaned text datasets for training quality. • Performed QA on AI-generated results and iterated prompts. • Supported dataset expansion for benchmarking and fine-tuning.

As a Content Creator & AI Prompt Specialist, I designed and authored high-quality prompts and responses to fine-tune large language models. I curated, cleaned, and labeled datasets to ensure factual accuracy and linguistic diversity for AI training. My responsibilities also involved evaluating AI outputs for alignment and maintaining datasets for further model development. • Crafted instructional content for model SFT. • Labeled and cleaned text datasets for training quality. • Performed QA on AI-generated results and iterated prompts. • Supported dataset expansion for benchmarking and fine-tuning.

2022 - Present

Education

Work History