Chintya Dewi

AI Data Annotator with 3+ years of experience handling text, audio, and 3D LiDAR data for AI and machine learning projects. Skilled in LLM evaluation, transcription, and content labeling, with a strong focus on accuracy and quality. Passionate about contributing to reliable, real-world AI systems through high-quality data.

AI Data Annotator at Chemin AI (2026-03 – Present)

Audio Transcription & Annotation

• Transcribed English audio with speaker labeling and segmentation.
• Applied linguistic tagging (fillers, stuttering, non-target language).
• Validated audio quality and ensured compliance with annotation standards.

AI Data Annotator at Thoth AI (2024-11 – 2026-03)

TikTok Search Safety Model

• Labeled search queries and content for safety and policy compliance.
• Classified sensitive content (harmful, misleading, unsafe).
• Ensured high-quality annotations through QA validation.

AI Data Annotator at LILT (2025-07 – 2025-11)

Post Editing & Localization

• Performed text post-editing and labeling for SMS, email, and conversational data.
• Applied localization techniques (slang, tone, cultural adaptation).
• Used Keep/Discard frameworks to ensure dataset quality.

AI Data Annotator at LILT (2025-10 – 2025-11)

Linguistic Evaluation

• Evaluated AI outputs for fluency, tone, and cultural appropriateness.
• Completed speaking, listening, ranking, and error detection tasks.
• Contributed to improving multilingual AI model performance.

AI Data Annotator at TELUS (2025-11 – 2026-01)

AI Response Evaluation

• Performed A/B testing on AI voice responses, evaluating engagement and realism.
• Assessed content quality, tone, and conversational flow.
• Applied annotation guidelines to ensure consistent evaluation results.

AI Data Annotator at RWS (2026-01 – 2026-03)

Audio Dubbing

• Evaluated AI-dubbed audio for translation accuracy and semantic equivalence.
• Assessed voice naturalness, prosody, and audio quality.
• Provided detailed feedback with timestamps to improve AI speech models.

AI Data Annotator at RWS (2025-10 – 2026-02)

Indonesia Audio Transcription

• Delivered verbatim audio transcriptions with high accuracy, including fillers and natural speech.
• Applied structured punctuation and formatting guidelines.
• Reviewed and corrected transcription errors for QA compliance.

AI Data Annotator at Remotask (2022-04 – 2022-10)

LiDAR 3D Automobile Annotation – Autonomous Vehicle

• Annotated 3D LiDAR point cloud data for autonomous vehicle systems, focusing on automobiles and road environments.
• Created accurate 3D bounding boxes (cuboids) and performed vehicle tracking across frames.
• Labeled automotive objects (cars, trucks, motorcycles) for perception models.
• Ensured high annotation accuracy and QA compliance for AV datasets.

AI Data Annotator at Lionbridge (2021-06 – 2022-01)

IG Feed FIT

• Labeled Instagram feed posts by assigning relevant topics and subtopics based on content (text, image, video) analysis.
• Conducted content classification and tagging using taxonomy systems, ensuring relevance, granularity, and accuracy in annotations.
• Performed data validation and research (side search) for unclear content to improve labeling quality and consistency.

High School Diploma in Science – 108 High School Jakarta (2011-07 – 2014-07)

Bachelor in Civil Engineering – Mercu Buana University (2015-09)