Portuguese Caption Annotation Specialist at Agents Only Technologies
Remote | Portugal | Independent Contractor
About Agents Only Technologies Inc.
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.
Our community of professionals helps advance next-generation AI technologies by producing accurate, high-quality annotations that improve speech recognition, multimedia understanding, and language models while maintaining the highest standards of quality, compliance, and operational excellence.
Role Overview
We are seeking detail-oriented European Portuguese Caption Annotation Specialists based in Portugal 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 European Portuguese.
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
What You Bring
Required Experience
Candidates should possess one or more of the following:
Experience in AI data annotation, multimedia annotation, audio labeling, transcription, or captioning.
Experience working on speech, language, 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.
Required Skills
Professional-level proficiency in European Portuguese (reading, writing, listening, and comprehension).
Strong written grammar and communication skills in European Portuguese.
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 Qualifications
For 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
Candidates with educational or professional backgrounds in the following are encouraged to apply:
Music
Audio Engineering
Sound Design
Audio Production
Multimedia Production
Film or Media Studies
Broadcasting
Related audio disciplines
Education / Expertise
Educational background or equivalent professional experience in one or more of the following is preferred:
European Portuguese Language
Linguistics
Translation
Communications
Music
Audio Engineering
Media Production
Sound Design
Multimedia
Artificial Intelligence Data Annotation
Related disciplines
Equivalent professional experience will also be considered.
Job Details
Location: Portugal (Remote)
Work Arrangement: Independent Contractor
Schedule: Flexible
Language: European Portuguese
Start Date: Project-based
Openings: Multiple
Training: Project-specific qualification and training may be required before production access.
Compensation
Compensation is project-based.
Actual earnings may vary based on project scope, task availability, productivity, and quality performance.
Important Notes
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.
How to Apply
If you're based in Portugal, have excellent European Portuguese language skills, and enjoy detail-oriented work that contributes to advancing AI technologies, we'd love to hear from you.
Submit your application through our official application process. Only shortlisted candidates will be contacted.
Equal Opportunity
Agents Only Technologies Inc. is committed to fostering an inclusive and diverse global community. We welcome talented individuals from a wide range of backgrounds, experiences, and perspectives. Opportunities are made available based on qualifications, skills, experience, and business needs, with the goal of building a collaborative environment where contributors can learn, grow, and succeed together.