Open to opportunities

Linus User

@linususer

Message

AI trainer and data annotator specializing in LLM prompts and dataset quality.

Kenya

Message

What I'm looking for

I seek roles where I can apply prompt engineering and annotation expertise to improve model performance, work collaboratively with AI teams, and grow in machine learning and data quality responsibilities.

I am an AI Trainer and Data Annotator with strong academic grounding in computer science and ongoing postgraduate studies in Information Technology. I specialize in prompt engineering, dataset labeling, AI response analysis, and improving model accuracy through structured feedback.

In freelance roles I have completed over 1,500+ annotation tasks across text, sentiment, and image classification, evaluated LLM outputs for clarity, bias, safety, and performed data cleaning, rewriting, summarization, and transcription to maintain high-quality training data.

I bring practical experience with annotation platforms and AI tools, a focus on quality assurance, and clear communication skills to collaborate effectively with AI teams and contribute to reliable, scalable ML systems.

Experience

Work history, roles, and key accomplishments

Current

AI Trainer / Data Annotator

Current

Freelance

Jan 2022 - Present (3 years 11 months)

Created and evaluated prompts for LLM training and labeled 1,500+ high-quality datasets for text, sentiment, and image classification, improving model accuracy and reducing bias. Reviewed AI outputs for clarity, safety, and reliability while providing structured feedback to AI teams.

Data Annotation Prompt Engineering Labeling Tools Data Cleaning Quality Assurance ChatGpt Scale AI

IT Support Assistant

Nairobi

Jan 2021 - Dec 2022 (1 year 11 months)

Assisted with routine IT troubleshooting, user support, and digital literacy training, supporting system maintenance and basic network tasks to improve staff productivity. Documented support workflows and contributed to office software training.