Spanish Caption Annotation Specialist

We are seeking detail-oriented Spanish Caption Annotation Specialists based in Spain to support a multimedia annotation project focused on enhancing machine-generated captions.

In this role, you will review AI-generated captions and create clear, accurate, and descriptive annotations for spoken dialogue, music, and environmental sounds. Your work will help improve AI-powered speech recognition, multimedia accessibility, and language technologies.

Depending on project requirements and your qualifications, you may participate in one or more annotation phases.

What You'll Do

As a Caption Annotation Specialist, you will:

• Review machine-generated captions for assigned multimedia content.
• Produce accurate and descriptive annotations following detailed project guidelines.
• Ensure captions are grammatically correct, natural, and easy to understand in Spanish.
• Maintain high annotation quality while meeting productivity expectations.
• Participate in calibration sessions and quality reviews when required.
• Meet project deadlines while consistently adhering to annotation standards.

Vocal Caption Annotation

Create detailed descriptions of spoken audio, including:

• Voice characteristics
• Speaking style and tone
• Emotion and delivery
• Speech rate and pacing
• Additional relevant vocal attributes

Music Caption Annotation

Describe musical content, including:

• Musical genre or style
• Instrumentation
• Tempo and rhythm
• Mood and atmosphere
• Audio effects and production characteristics

Sound Effect Caption Annotation

Describe environmental and sound effects, including:

• Type of sound
• Timing within the scene
• Relative volume
• Duration
• Context and overall audio characteristics, * Contributors must successfully complete all required project assessments before onboarding.
• Annotation quality will be continuously monitored through quality assurance reviews.
• Consistent adherence to project guidelines is required throughout the engagement.
• Project availability may vary depending on client demand, language requirements, and business needs.
• Contributors may be assigned to one or more annotation phases based on qualifications and demonstrated performance.

• Experience in AI data annotation, multimedia annotation, audio labeling, or transcription.
• Experience working on speech, language, captioning, or localization projects.
• Familiarity with annotation platforms and quality assurance processes.
• Experience reviewing AI-generated content is an advantage.
• Previous experience working remotely as an independent contractor or freelancer is preferred., * Professional-level proficiency in Spanish (reading, writing, listening, and comprehension).
• Strong written Spanish grammar and communication skills.
• Excellent listening and audio comprehension abilities.
• Exceptional attention to detail and consistency.
• Ability to understand and follow detailed annotation guidelines.
• Comfortable working independently in a remote environment.

Preferred QualificationsFor Vocal Caption Annotation

• Experience with Text-to-Speech (TTS), Automatic Speech Recognition (ASR), or speech AI projects.
• Background in linguistics, phonetics, speech sciences, translation, or language technologies.

For Music & Sound Effect Annotation, * Audio Production

• Multimedia Production
• Film or Media Studies
• Broadcasting
• Related audio disciplines, Educational background or equivalent professional experience in one or more of the following is preferred, If you're based in Spain, have excellent Spanish language skills, and enjoy detail-oriented work that contributes to advancing AI technologies, we'd love to hear from you.

• Spanish Language
• Linguistics
• Translation
• Communications
• Music
• Audio Engineering
• Media Production
• Sound Design
• Multimedia
• Artificial Intelligence Data Annotation
• Related disciplines, Compensation is project-based.

Actual earnings may vary based on project scope, task availability, productivity, and quality performance.

Agents Only Technologies Inc. is a global workforce and operations company supporting technology, customer experience, business operations, artificial intelligence, and professional services across multiple industries. We collaborate with organizations worldwide to deliver high-quality language, multimedia, and AI data solutions through a distributed global network of contributors.