Vietnamese Linguistic Projects (Remote)

Sigma AI; South Africa; Remote; ZAR 83,000 - 165,000; Full time

Job summary

Sigma AI is seeking motivated freelance data annotators for multilingual annotation projects. Work remotely on tasks including categorization, transcription, evaluation, and content localization for AI training data.

You will work on audio, image, video, and text content across languages; successful candidates are detail-oriented, reliable, and able to follow project guidelines with accuracy.

Qualifications

• Fluent in Vietnamese and English with accurate listening and writing.
• Basic computer skills required.
• Experience in data annotation or content rating preferred.
• Strong attention to detail.
• Hardware: 4GB RAM, mic, webcam, and supported OS such as Windows 10+ or macOS 13+.

Responsibilities

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

Skills

Vietnamese fluency

English fluency

Attention to detail

Experience in data annotation

Tools

Windows 10 or higher

macOS 13 Ventura or higher

Job description

What is Sigma?

Sigma is a leading global technology company specialized 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? 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.

We Are Looking For Candidates With The Following Qualifications

Fluent in Vietnamese – Able to listen and write correctly without spelling mistakes Fluent in English – Able to listen and write correctly without spelling mistakes Basic computer skills Preferred (but Not Mandatory) Experience in data annotation or content rating Strong attention to detail Computer

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

Important Notes

Sigma.AI does not hire through third parties. No agents’ intermediaries or third parties are authorized to represent benefit from or participate in any way in the relationship. To this effect the Candidate agrees to provide any documentation or information reasonably requested by the Company to verify their identity and credentials. Should the Candidate fail to provide enough evidence of their identity to Sigma´s satisfaction, Sigma shall be entitled to withhold or terminate any offer with the Candidate. 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 o