Open to opportunities

Sisipho Tyumbu

@sisiphotyumbu

AI Data Labeling Specialist with 6+ years delivering precise computer vision, LLM evaluation, and multimodal annotations.

South Africa

Message

What I'm looking for

I’m seeking a remote role where I can label and evaluate AI datasets with precision and speed—applying strong guideline adherence across computer vision, LLM evaluation, and multimodal tasks to support reliable model training.

I’m a results-driven AI Data Labeling Specialist with over 6 years of hands-on experience delivering high-quality annotations and evaluations for advanced AI systems. I’m trusted for precision, consistency, and strong guideline adherence across computer vision, LLM evaluation, and multimodal datasets, including large-scale projects for RWS Diamond, TELUS, and Aligner.

I specialize in AI computer vision data labeling for self-driving cars and real-world perception systems, and I also support LLM evaluation and English text generation with clarity, factual accuracy, and model alignment. From image and video annotation to complex, temporal, and multimodal tasks, I focus on speed, quality-driven results, and dependable production performance.

Experience

Work history, roles, and key accomplishments

AI Data Labeling Specialist

Aligner

Contributed as an AI data labeling specialist on large-scale AI training projects, producing consistent, guideline-compliant annotations. Worked across image and video labeling and supported LLM evaluation activities for alignment and accuracy.

AI Data Labeling Image Annotation Video Annotation Data Quality Assurance LLM Evaluation

AI Data Labeling Specialist

RWS Diamond

Delivered high-quality AI data annotations and evaluations at scale, including computer vision labeling for real-world perception systems. Contributed to AI training projects with a focus on speed, consistency, and strong guideline adherence.

AI Data Labeling Image Annotation Video Annotation Data Quality Assurance LLM Evaluation

AI Data Labeling Specialist

TELUS International

Provided precise AI data labeling and evaluation support at scale, covering computer vision and multimodal annotation tasks. Supported LLM evaluation and English text generation with an emphasis on clarity, factual accuracy, and model alignment.

AI Data Labeling Image Annotation Video Annotation Data Quality Assurance LLM Evaluation Text Generation