Mozart J.

Key Skills

Software

Scale AI

Telus

Appen

Other

Top Subject Matter

Medical imaging and healthcare AI

LLM servicing quality assurance and search evaluation

Speech recognition and clinical NLP data preparation

Top Data Types

Text

Audio

Image

Document

Top Task Types

Bounding Box

Transcription

Question Answering

Freelancer Overview

Freelance AI Trainer & Data Annotator (Remotasks / Scale AI). Brings 3+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Scale AI, Telus, and Appen. Education includes Bachelor of Science, Kenyatta University (2024) and Kenya Certificate of Secondary Education, Maseno School (2017). AI-training focus includes data types such as Medical, DICOM, and Text and labeling workflows including Bounding Box, Evaluation, and Rating.

Labeling Experience

Medical image analysis AI Data Specialist (OpenTrain AI)

OtherQuestion Answering

Medical image analysis AI Data Specialist supporting visual question answering project training. Annotated clinical image-question pairs for diagnostic AI training and performed structured evaluation of responses. Contributed to document digitisation and structured data extraction from biomedical equipment manuals and clinical records. • Annotated clinical VQA image-question pairs for diagnostic training • Performed search result evaluation and rating • Conducted AI response quality assessment and red-teaming • Completed document transcription and structured data extraction

2024 - Present

Freelance AI Trainer & Data Annotator (Remotasks / Scale AI)

Scale AIBounding Box

Freelance AI Trainer & Data Annotator delivering large-scale medical image annotations for computer vision model training. Work included bounding boxes, polygon segmentation, and semantic labelling across X-rays, CT scan regions, and histology slides. Maintained high-quality accuracy to qualify for an advanced annotator tier with consistent inter-task performance. • Labeled medical imaging datasets for healthcare AI clients • Completed 1,200+ image annotation tasks • Achieved quality accuracy above 97% • Performed computer vision semantic labelling and region-focused labeling

2024 - Present

AI Response Evaluator & Search Rater (Telus International AI / Lionbridge)

TelusText

AI Response Evaluator and Search Rater assessing the relevance, quality, and intent-match of search results for multilingual queries. Reviewed AI-generated text responses for accuracy, safety, and helpfulness within a global LLM servicing quality assurance programme. Completed evaluation tasks with maintained inter-annotator agreement and certification. • Evaluated search results for relevance and intent matching in English and Swahili • Assessed AI responses for accuracy, safety, and helpfulness • Completed UJET certification and contributed to QA workflows • Produced consistent scoring outputs across 500+ evaluation tasks

2023 - 2023

Data Labelling & Transcription Freelancer (Appen Connect)

AppenAudioTranscription

Data labeling and transcription work to support speech recognition model training using audio and video recordings. Transcribed and annotated 80+ hours of content covering diverse accents and dialects. Also performed text classification, sentiment labeling, and named entity recognition on unstructured datasets for NLP model preparation. • Transcribed and annotated 80+ hours for speech recognition • Performed text classification and sentiment labelling • Applied NER tagging on large unstructured datasets • Labeled and quality-checked biomedical literature for clinical NLP

2022 - 2023

Education

Work History