Precious M.

Key Skills

Software

Scale AI

Appen

Lionbridge

Top Subject Matter

LLM training

multilingual linguistic QA

chatbot evaluation

Top Data Types

Text

Image

Top Task Types

Fine-tuning

Freelancer Overview

Senior AI Data Trainer & Annotator — Scale AI / Remotasks. Brings 11+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Scale AI, Appen, and Lionbridge. Education includes Bachelor of Science, University of Lagos (2016) and Certificate, Scale AI Academy (2021). AI-training focus includes data types such as Text and labeling workflows including Fine-tuning, Translation, and Localization.

Labeling Experience

Senior AI Data Trainer & Annotator — Scale AI / Remotasks

Scale AITextFine-tuning

Led LLM training and fine-tuning tasks using large-scale labeled datasets to improve reasoning and factual accuracy. Performed linguistic QA and multilingual text validation to maintain high audit accuracy for dataset releases. Collaborated with AI engineers to ensure consistent annotation and prompt-alignment across projects. • Trained and optimized LLM outputs based on annotated text samples. • Conducted multilingual linguistic QA to verify grammar, semantics, and stylistic quality. • Evaluated chatbot responses for coherence, safety alignment, and conversational quality. • Designed and enforced labeling standards for text, image, and audio modalities within dataset workflows.

2020 - Present

Linguistic Quality Assurance Analyst — RWS / Appen Global

AppenText

Provided linguistic QA and localization support for English and African language projects, ensuring language quality for downstream AI models. Audited and refined large volumes of text strings to improve grammatical, semantic, and stylistic correctness. Authored annotation guidelines and QA frameworks for a large linguist team. • Audited 250,000+ text strings for localization quality. • Authored annotation guidelines and QA frameworks used by 200+ linguists. • Supported semantic evaluation for AI translation and summarization models. • Reduced error rates and rework via improved feedback loops and annotator training.

2018 - 2019

Search Engine Evaluator & Content Analyst — TELUS International / Lionbridge AI

LionbridgeText

Performed query relevance assessments and content evaluation for global search engine quality. Labeled social media content and produced sentiment-related labels to support recommendation and ranking improvement. Maintained high accuracy across quality audits and multimedia labeling workflows for speech and computer vision training. • Assessed query relevance for search evaluation tasks. • Performed sentiment classification for social media content. • Maintained 95%+ accuracy across quality audits. • Labeled multimedia data for computer vision and speech recognition AI training projects.

2016 - 2018

Education

Work History