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Jamie S.

Jamie S.

Advanced AI Data Trainer – Invisible Technologies

South Africa flagMoorreesburg, South Africa

Key Skills

Software

No software listed

Top Subject Matter

Artificial Intelligence
Psychology Domain Expertise
English Domain Expertise

Top Data Types

TextText
ImageImage

Top Task Types

RLHFRLHF

Freelancer Overview

Advanced AI Data Trainer – Invisible Technologies. Brings 10+ years of professional experience across complex professional workflows, research, and quality-focused execution. Core strengths include Internal and Proprietary Tooling. Education includes Bachelor of Arts, Pearson Institute of Higher Education and Postgraduate Certificate in Education, Cornerstone Institute. AI-training focus includes data types such as Text and labeling workflows including RLHF, Evaluation, and Rating.

Labeling Experience

Advanced AI Data Trainer – Invisible Technologies

TextTextRLHFRLHF

As an Advanced AI Data Trainer at Invisible Technologies, I performed supervised fine-tuning (SFT) and reinforcement learning from human feedback (RLHF) for improving AI model alignment and performance. My work involved evaluating and ranking AI-generated responses and engaging in error labeling and red teaming to ensure quality. I also applied prompt engineering and criteria-based verification to optimize outputs. • Conducted SFT and RLHF for model improvement • Evaluated and ranked AI responses on accuracy and clarity • Labeled errors and engaged in red teaming tasks • Applied criteria-based consistency checks

2023 - Present

Human Data Trainer – xAI

TextText

As a Human Data Trainer at xAI, I reviewed and refined AI conversational outputs for accuracy and contextual relevance. I utilized structured evaluation frameworks to assess reasoning and behavior in AI-generated responses. My contributions supported the iterative training and improvement of conversational AI systems. • Reviewed and improved AI-generated outputs • Applied evaluation frameworks for reasoning assessment • Contributed feedback to enhance AI behavior • Focused on conversational context and quality

2025 - 2025

Education

N

N/A

Certificate in Teaching English as a Foreign Language, Teaching English as a Foreign Language

Certificate in Teaching English as a Foreign Language
Not specified
C

Cornerstone Institute

Postgraduate Certificate in Education, Education

Postgraduate Certificate in Education
Not specified

Work History

N

N/A

Special Needs Facilitator / Tutor / Educational Assistant

Moorreesburg
2013 - 2022
N

N/A

Writer, Social Media Manager & Data Capturing

Moorreesburg
2018 - 2018