Senior Annotation Specialist – Advanced AI Data Annotation – Kolkata, India

Fusion CX; Kolkata District; On-site; INR 600,000 - 900,000; Full time

Job summary

Fusion CX in Kolkata, India is seeking a Senior Annotation Specialist – Advanced AI Data Annotation to execute complex annotations across image, video, LiDAR, and multimodal datasets, review guidelines, calibrate quality, and share knowledge to ensure accuracy and consistency on advanced projects.

You will lead training for annotators, create reference examples, and support QA to resolve edge-case scenarios while meeting productivity and quality targets.

Qualifications

• 2-4 years of annotation experience.
• Hands-on experience with bounding boxes, segmentation, object tracking, polygon annotation and video annotation.
• Strong attention to detail and ability to adapt to evolving client requirements and project guidelines.

Responsibilities

• Perform advanced annotations across image, video, LiDAR, and multimodal datasets.
• Review project guidelines and participate in calibration exercises.
• Support QA teams in resolving quality disputes and edge-case scenarios.
• Create reference examples, edge-case documentation, and annotation notes.
• Assist in training and onboarding new annotators.
• Provide recommendations to improve annotation workflows and productivity.
• Consistently meet productivity, accuracy, and quality targets.

Skills

Annotation experience

Bounding Boxes

Segmentation

Object Tracking

Polygon Annotation

Video Annotation

Attention to detail

Adaptability

Job description

Turn complex data into the foundation for better AI. Fusion CX is hiring a Senior Annotation Specialist – Advanced AI Data Annotation in Kolkata, India. If you are searching for AI data annotation jobs in Kolkata, Senior Annotation Specialist jobs, computer vision annotation jobs, LiDAR annotation jobs, video annotation jobs, or data labeling careers, this opportunity offers the chance to work on advanced AI data projects while applying your annotation expertise to complex image, video, LiDAR, and multimodal datasets. As a Senior Annotation Specialist, you will combine hands-on annotation expertise with guideline review, calibration, quality support, and knowledge sharing to help maintain accuracy and consistency across advanced annotation projects.

Job Description:

Role Summary The Senior Annotation Specialist will execute complex annotation tasks, support guideline reviews and calibrations, and act as a subject matter resource for advanced annotation projects.

Key Responsibilities

• Perform advanced annotations across image, video, LiDAR, and multimodal datasets.
• Review project guidelines and participate in calibration exercises.
• Support QA teams in resolving quality disputes and edge-case scenarios.
• Create reference examples, edge-case documentation, and annotation notes.
• Assist in training and onboarding new annotators.
• Provide recommendations to improve annotation workflows and productivity.
• Consistently meet productivity, accuracy, and quality targets.

Job Requirements:

Required Skills

• 2-4 years of annotation experience.
• Hands-on experience with Bounding Boxes, Segmentation, Object Tracking, Polygon Annotation, and Video Annotation.
• Strong attention to detail and accuracy.
• Ability to adapt quickly to evolving client requirements and project guidelines.

Preferred Industry Background

• Experience in AI data services, data annotation, data labeling, or computer vision data operations.
• Exposure to advanced AI data annotation projects involving image, video, LiDAR, or multimodal datasets is preferred.
• Experience working in environments focused on annotation quality, calibration, and AI training data is an advantage.

Work Details

Location: Kolkata, India

Why Join Fusion CX?

Advanced AI depends on accurate, consistent, and well-structured training data. As a Senior Annotation Specialist, you'll contribute directly to the quality of advanced annotation projects while developing deeper expertise across annotation methodologies, quality processes, and AI data operations.

What You Will Gain

• Build expertise in advanced AI data annotation across image, video, LiDAR, and multimodal datasets.
• Strengthen your hands-on experience with Bounding Boxes, Segmentation, Object Tracking, Polygon Annotation, and Video Annotation.
• Gain exposure to guideline reviews, calibration exercises, quality disputes, and edge-case analysis.
• Contribute reference examples, annotation notes, and documentation that support consistent project execution.
• Develop mentoring and knowledge-sharing experience through annotator training and onboarding.
• Contribute ideas that improve annotation workflows, productivity, accuracy, and quality.
• Build career opportunities across AI Data Annotation, Data Labeling, Annotation Quality, Computer Vision Data, LiDAR Data, and AI Operations.