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Suradip Samaddar

@suradipsamaddar

Audio Data Annotator at Perit.AI, preparing accurately transcribed and aligned audio for speech recognition model training.

India

Message

At Perit.AI, I performed audio annotation for AI and speech recognition model training, including transcription, word-level timestamping, and audio-text alignment.

I reviewed audio for transcription accuracy, speaker clarity, and precise word boundaries, and checked annotated datasets for consistency and completeness.

As a Freelance Data Annotator on Upwork, I labeled image datasets for computer vision using CVAT and Label Studio. I created reusable annotation templates and QA workflows, achieving 95%+ inter-annotator agreement, and exported annotations in COCO, YOLO, and Pascal VOC formats.

Experience

Work history, roles, and key accomplishments

Freelance Data Annotator

Upwork

Jun 2024 - Jun 2025 (1 year)

Annotated large-scale image datasets with bounding boxes, polygons, and keypoint landmarks for computer vision model training. Used CVAT and Label Studio to perform semantic segmentation and object detection labeling across medical imaging and autonomous driving domains.

Data Annotation Bounding Boxes Polygon Keypoint Annotation CVAT LabelStudio Semantic Segmentation Object Detection COCO YOLO Pascal VOC

Audio Data Annotator

Perit.AI

Performed audio annotation tasks including transcription, word-level timestamping, and audio-text alignment to support AI and speech recognition model training. Reviewed and labeled audio data with a focus on transcription accuracy, speaker clarity, word boundaries, and precise timestamp assignment.

Audio Annotation Transcription Time Stamping Audio Text Alignment Quality Assurance