Umbundu Linguistic Projects

Sigma AI; Remote; ZAR 300 000 - 400 000; Part time

Job summary

A leading AI technology firm is looking for freelancers to participate in linguistic projects, including data categorization, annotation, and transcription. Ideal candidates must be fluent in Umbundu and English, possess basic computer skills, and have a strong attention to detail. This remote opportunity allows flexible working hours, requiring candidates to engage in various data collection tasks through an online platform. Join us to be part of innovative AI solutions.

Qualifications

• Candidates must be fluent in Umbundu and English, able to listen and write correctly.
• Basic computer skills are required.
• Experience in data annotation or content rating is preferred.

Responsibilities

• Categorize data and perform annotations as part of linguistic projects.
• Correct and transcribe audio content, ensuring high-quality evaluations.
• Engage in conversational interactions and voice recordings for AI data projects.

Skills

Fluent in Umbundu

Fluent in English

Basic computer skills

Attention to detail

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 200 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?

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 Umbundu – 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

Technical Requirements

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

How to Apply

If you’re interested, click “APPLY FOR THIS JOB” and follow the instructions.

After submitting your application, you will receive an email with the required tests to assess your qualifications. These tests are mandatory to move forward in the process.

Check your inbox and spam folder, just in case!

Important Notes

• Sigma.AI does not hire through third parties. No agents or third‑party intermediaries are authorized to represent or benefit from the relationship. Candidates must provide any documentation reasonably requested to verify identity and credentials. Failure to provide adequate evidence may result in withholding or termination of any offer.
• 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, with the purpose of evaluating tests submitted (e.g., transcribed content). The legal basis is the pre‑contractual relationship 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.