AI Trainer / Data Annotator & Labeler (Freelance) — Opentrain | Prolific
Annotated and labeled audio datasets for ML and NLP model training tasks. Worked with Label Studio and LabelBox to support structured annotation workflows and reliable output formatting. Maintained required annotation quality across projects and incorporated feedback loops from model evaluations. • Labeled audio data according to task guidelines • Used annotation platforms to manage and export labeled samples • Ensured accuracy met quality threshold requirements • Coordinated with teams to keep labeling instructions consistent