Mark K.

Key Skills

Software

Other

Top Subject Matter

LLM evaluation

RLHF preference modeling

NLP research annotation

Top Data Types

Text

Top Task Types

RLHF

Freelancer Overview

Freelance AI Data Annotator | Various AI Labs (Remote). Brings 9+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Other. Education includes Bachelor of Science, University of Nairobi (2018). AI-training focus includes data types such as Text and labeling workflows including RLHF.

Labeling Experience

Freelance AI Data Annotator | Various AI Labs (Remote)

OtherTextRLHF

Provided RLHF ratings and comparative evaluations for LLM outputs across coding, reasoning, and instruction-following tasks. Annotated over 25,000 text samples covering sentence boundaries, coreference chains, toxicity classifications, and factual accuracy judgments for NLP research. Reviewed and red-teamed AI-generated code to identify logical errors, security issues, and hallucinations, then suggested corrected alternatives with rationale. • RLHF (Reinforcement Learning from Human Feedback) ratings and preference/comparative evaluation • Annotation for NLP tasks including boundaries, coreference, toxicity, and factuality • Red-teaming and corrected-code feedback with explanatory rationale • Calibration-guideline adherence with >95% agreement on checks

2021 - Present

Education

Work History