Cantonese Chinese (Traditional script) Linguistic Projects (Remote) | Sigma AI

Sigma.AI; United States; Remote; USD 21,000 - 34,000; Part time

Job summary

Sigma.AI in the US is seeking freelancers for multilingual data annotation projects. You will categorize, annotate, transcribe, and evaluate language data across Cantonese and English tasks, with strict quality expectations.

Working remotely on a flexible schedule, you’ll contribute to cutting-edge AI training datasets and gain experience across global linguistic projects. Prior experience in linguistics or data annotation is a plus.

Qualifications

• Fluent in Cantonese Chinese - able to listen and write correctly without spelling mistakes
• Fluent in English - able to listen and write correctly without spelling mistakes
• Computer literacy
• Preferred: experience with computational linguistics, corpus analysis, language data annotation, or LLM training

Responsibilities

• Categorization, annotation, correction, transcription, evaluation, and localization of language data.
• Participate in conversational interactions, voice recording, and content creation tasks.
• Validate audio, video, images, sentences, or words for quality and consistency.

Skills

Cantonese

English

Attention to detail

Computer literacy

Job description

Join Sigma.AI – Shaping the Future of Artificial Intelligence

What is Sigma? Sigma is a leading global technology company specializing in data collection and annotation for Artificial Intelligence. With over 30 years of experience, offices in Spain, the US, and the UK, and operations in more than 700 languages, we support top multinational clients in developing cutting‑edge AI solutions.

Soft Skills We Value

Are you a proactive professional who thrives on challenges, values collaboration, and approaches every task with empathy, integrity, and a passion for learning?

If so, we’d love to hear from you!

What Will You Do? As part of our linguistic projects, your responsibilities may include:

Categorization – Annotation – Correction – Transcription – Evaluation – Conversational interactions – Voice recording – Content creation – Localization – Validation of audio, video, images, sentences, or words.

All tasks are remote , performed through an online platform available 24/7. This opportunity is offered for freelancers under a commercial contract .

Requirements

We are looking for candidates with the following qualifications:

• Fluent in Cantonese Chinese - Able to listen and write correctly without spelling mistakes
• Fluent in Cantonese Chinese - Able to listen and write correctly without spelling mistakes
• Fluent in English - Able to listen and write correctly without spelling mistakes
• Fluent in English - Able to listen and write correctly without spelling mistakes
• Computer literacy
• Computer literacy
• Preferred (but not mandatory):
• Experience with one or more of the following: computational linguistics, corpus analysis, language data annotation, or LLM training
• Experience with one or more of the following: computational linguistics, corpus analysis, language data annotation, or LLM training
• Strong attention to detail
• Strong attention to detail

Technical Requirements

To participate in our projects, you will need:

• Computer:
• Minimum 4GB RAM
• Minimum 4GB RAM
• Microphone and webcam
• Microphone and webcam
• Operating system: Windows 10 or higher macOS 13 Ventura or higher
• Operating system:
• Windows 10 or higher
• Windows 10 or higher
• macOS 13 Ventura or higher
• macOS 13 Ventura or higher
• All OS updates installed and supported by the vendor
• All OS updates installed and supported by the vendor
• Connectivity & Accessories:
• Stable internet connection
• Stable internet connection
• Headphones
• Headphones
• Secure internet location, protected by a strong password
• Secure internet location, protected by a strong password
• For audio-collection projects only:
• Mobile phone with Android OS
• Mobile phone with Android OS
• Tablets and iOS devices are not supported

The company may employ or rely on artificial intelligence systems in its selection processes. Such processing is carried out in an ethical, transparent, and legally compliant manner. The purpose of the processing is to evaluate the tests submitted in the course of the selection process (for instance the transcribed content provided by the candidate). The legal basis for processing your data is the pre-contractual relationship between the parties and/or the provision of requested services.

Need Help? We’re here for any questions or concerns.

Join us and be part of something global, innovative, and impactful.

Sigma.AI – Data done right.