Bulgarian Language Data Specialist

Sigma AI; Greater London; On-site; GBP 18,000 - 28,000; Full time

Job summary

Sigma.AI is seeking candidates for linguistic projects involving categorization, annotation, transcription, evaluation, and content localization. You will contribute to high‑quality data used to train AI, working in a collaborative environment with a focus on accuracy, consistency, and ethical data handling.

Native Bulgarian and fluent English are required; basic computer skills and attention to detail are essential, with preferred experience in data annotation.

Qualifications

• Native or bilingual in Bulgarian – able to listen and write correctly without spelling mistakes.
• Fluent in English – able to interact efficiently in the office environment.
• Basic computer skills.
• Preferred (but not mandatory): Experience in data annotation or content rating.
• Strong attention to detail.

Responsibilities

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

Skills

Bulgarian native

Fluent English

Attention to detail

Basic computer skills

Data annotation experience

Job description

Sigma.AI is seeking candidates for linguistic projects involving categorization, annotation, transcription, evaluation, and content localization. You will contribute to high‑quality data used to train AI, working in a collaborative environment with a focus on accuracy, consistency, and ethical data handling.

Native Bulgarian and fluent English are required; basic computer skills and attention to detail are essential, with preferred experience in data annotation.