Annotator (Video Annotation & Captioning)

Centific; Singapore; On-site; SGD 24,000 - 36,000; Full time

Job summary

Centific is seeking a detail-oriented Data Annotation & Captioning Associate to work on-site in One North, Singapore. You will annotate image and video content, apply bounding boxes and labels, and edit captions for accuracy while adhering to project guidelines.

Strong English writing skills and diligence to QA standards are essential. Diploma holders with experience in caption editing and video annotation are encouraged to apply.

Qualifications

• Diploma holder in any discipline.
• Prior data annotation/captioning experience is an advantage.
• Good written and spoken English; ability to edit captions.

Responsibilities

• Review and annotate image/video frame-by-frame or by segment according to labelling schemas.
• Apply bounding boxes, tracking IDs, event tags, or classification labels to objects/actions within content.
• Edit, correct, and time-sync captions against audio/video content for accuracy.
• Check captions for spelling, grammar, punctuation, and correct speaker attribution.
• Ensure annotations and captions meet accuracy and quality benchmarks.
• Flag ambiguous content for review/escalation.
• Follow annotation guidelines and update work based on QA feedback.
• Maintain productivity targets while meeting quality standards.
• Attend briefings/training on tool usage and guidelines.
• Report progress to the Team Lead

Skills

Attention to detail

Caption editing

Video annotation

English proficiency

Quality assurance

Structured guidelines

Education

Diploma

Tools

Video annotation tools

Job description

About Centific

Centific is a frontier AI data foundry that curates diverse, high-quality data, using our purpose-built technology platforms to empower the Magnificent Seven and our enterprise clients with safe, scalable AI deployment. Our team includes more than 150 PhDs and data scientists, along with more than 4000 AI practitioners and engineers. We harness the power of an integrated solution ecosystem comprising industry-leading partnerships and 1.8 million vertical domain experts in more than 230 markets to create contextual, multilingual, pre-trained datasets; fine-tuned, industry-specific LLMs; and RAG pipelines supported by vector databases. Our zero-distance innovation solutions for GenAI can reduce GenAI costs by up to 80% and bring solutions to market 50% faster.

Our mission is to bridge the gap between AI creators and industry leaders by bringing best practices in GenAI to unicorn innovators and enterprise customers. We aim to help these organizations unlock significant business value by deploying GenAI at scale, helping to ensure they stay at the forefront of technological advancement and maintain a competitive edge in their respective markets.

About Job

Key Responsibilities

• Review and annotate image / video footage frame-by-frame or by segment according to defined labelling schemas
• Apply bounding boxes, tracking IDs, event tags, or classification labels to objects/actions within image / video content
• Edit, correct, and time-sync captions against audio/video content for accuracy
• Check captions for spelling, grammar, punctuation, and correct speaker attribution
• Ensure annotations and captions meet accuracy and quality benchmarks set by the project
• Flag ambiguous, unclear, or edge-case video/caption content for review/escalation
• Follow annotation and captioning guidelines and update work based on QA feedback
• Maintain productivity targets while meeting quality standards
• Attend briefings/training sessions on tool usage and annotation guidelines
• Report progress and issues to the Team Lead

Requirements

• Minimum Diploma in any discipline
• Prior experience in data annotation, captioning, subtitling, or content moderation is an advantage (not mandatory)
• Comfortable working with video annotation and caption-editing tools/platforms
• Strong attention to detail, especially for language/grammar accuracy in captions
• Able to follow structured guidelines and apply judgement on edge cases
• Computer literacy (navigating software tools, spreadsheets)
• Good written and spoken English skills (essential for caption editing)

Working Arrangements

• On-site (One North Area)
• Working hours: 9:00 AM 6:00 PM
• Comfortable working with sensitive or varied video content as per project scope

Centific is an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, ancestry, citizenship status, age, mental or physical disability, medical condition, sex (including pregnancy), gender identity or expression, sexual orientation, marital status, familial status, veteran status, or any other characteristic protected by applicable law. We consider qualified applicants regardless of criminal histories, consistent with legal requirements.