MUHAMMAD ASIF

Sigma AI Data Annotation Specialist

Sigma Solve • Freelance

Jan 2026 - Present • 9 mos

Worked on AI training data projects including data annotation, labeling, transcription, content review, and quality assurance tasks. Helped improve machine learning models by providing accurate and high-quality data. Experienced with remote project tools, guidelines, and deadline-based workflows. Strong attention to detail, consistency, and ability to handle repetitive tasks efficiently.

Appen AI Data Annotation & Transcription Specialist

Platform • Freelance

Nov 2025 - Present • 11 mos

Worked on AI data annotation and transcription projects for global clients, helping improve machine learning and speech recognition systems. My responsibilities included audio transcription, speech segmentation, data labeling, quality checks, and following detailed project guidelines to maintain high accuracy. I worked with Punjabi, Urdu, and English audio content, carefully listening, understanding context, and converting speech into accurate written text. I also handled timestamping, speaker identification, reviewing task quality, and meeting deadlines in fast-paced remote environments. Experienced with online annotation tools, project dashboards, and workflow systems. Strong attention to detail, consistency, and ability to learn new systems quickly. Focused on delivering reliable results while maintaining confidentiality and professional standards. This experience helped me build strong skills in data processing, remote collaboration, communication, and quality assurance.