Collins A.

Key Skills

Software

Other

Top Subject Matter

Creative writing

Literature Domain Expertise

Linguistics Domain Expertise

Top Data Types

Text

Top Task Types

RLHF

Entity (NER) Classification

Classification

Freelancer Overview

AI Trainer / Prompt Engineer & Evaluator | Outlier. Brings 2+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Doctor of Philosophy, University of Ibadan (2024) and Master of Arts, University of Ibadan (2020). AI-training focus includes data types such as Text and labeling workflows including RLHF, Entity (NER) Classification, and Classification.

Labeling Experience

AI Data Annotator & Trainer | Uber AI

OtherTextEntity (NER) Classification

Performed high-volume text and semantic annotation for AI training tasks including entity recognition, sentiment labeling, and content classification. Validated and cleaned training datasets to ensure consistency and accuracy while reducing bias. Collaborated with distributed annotation teams in asynchronous remote-first workflows. • Applied annotation guidelines to maintain dataset quality. • Conducted dataset validation and error correction to improve labeling reliability. • Ensured labeled outputs matched required schema and classification definitions. • Contributed to iterative dataset improvements for downstream model training.

2026 - Present

AI Trainer / Prompt Engineer & Evaluator | Outlier

OtherTextRLHF

Designed and evaluated complex LLM prompts for fine-tuning tasks spanning creative writing, reasoning, and instruction-following. Annotated model outputs for quality, factual accuracy, tone, and alignment with RLHF guidelines. Ranked and rated AI responses to improve safety and helpfulness metrics. • Worked on multilingual and domain-specific dataset creation using literature, linguistics, and African cultural contexts. • Performed quality checks and feedback loops to guide improvements in model behavior. • Supported evaluation and refinement cycles for generated text outputs. • Applied instruction-following and tone consistency requirements to training materials.

2025 - Present

AI Contributor / Data Labeller | Sahara AI

OtherTextClassification

Labeled multimodal dataset components (text and structured data) to support AI model development pipelines. Applied domain expertise in language and literature to enrich culturally nuanced training data. Maintained quality benchmarks and adhered to strict annotation style guides. • Produced labels according to defined schema and style instructions. • Ensured consistency across entries against quality benchmark criteria. • Supported culturally informed annotation for language-based model training. • Contributed to preparation of structured training data for model use.

2025 - 2025

Education

Work History