We are looking for detail-oriented native Spanish speakers to support the development of AI models designed to detect scam and phishing communications. In this role, you will review SMS and email messages, classify them according to detailed annotation guidelines, and help create high-quality training data for machine learning systems used in fraud and scam detection.
This is a fully remote, freelance opportunity for candidates who enjoy language-focused work, have excellent attention to detail, and can consistently apply defined annotation rules.
Tasks
- Review SMS and email messages in spreadsheets and classify each message according to established annotation guidelines.
- Apply labels accurately and consistently while maintaining high quality standards.
- Process approximately 2,500 messages per day, meeting both productivity and quality targets.
- Identify ambiguous or edge-case examples and escalate them when necessary.
- Participate in regular team calibration sessions and peer reviews (approximately 10% of working time) to ensure annotation consistency across the project.
- Follow project documentation, workflows, and data handling procedures at all times.
- Communicate proactively with the project team regarding questions, issues, or guideline clarifications.
Requirements
- Native-level proficiency in Spanish (spoken and written).
- Excellent command of the English language.
- Ability to work within EMEA or USA time zones.
- Excellent reading comprehension and understanding of colloquial language, slang, abbreviations, and regional expressions.
- Strong attention to detail with the ability to make accurate, consistent decisions based on detailed guidelines.
- Comfortable working with large volumes of repetitive data while maintaining a high level of accuracy.
- Ability to manage deadlines and achieve daily productivity targets.
- Comfortable reviewing content that may include scam attempts, offensive language, profanity, or other sensitive material.
- Experience using spreadsheet applications.
- Previous experience in data annotation, content moderation, data labelling, quality assurance, or linguistic projects is an advantage.
- Experience working with AI or machine learning data annotation projects is preferred.
- Strong analytical and problem-solving skills.
- Ability to recognise patterns and identify inconsistencies in data.
- Excellent communication skills and willingness to collaborate in an international remote team.
- Ability to work independently while following detailed instructions.
- Reliable internet connection and access to a computer suitable for remote work.
Benefits
- Fully remote freelance engagement.
- Opportunity to contribute to the development of cutting-edge AI systems focused on scam and fraud detection.
- Work with an experienced international project team.
- Clear annotation guidelines and ongoing support.
- Flexible remote working environment.
- Gain valuable experience in AI data annotation, content classification, and machine learning projects.
Please send your CV with a letter of motivation explaining why you are an ideal fit for this role
Native Spanish and excellent English proficiency, strong attention to detail, analytical skills, spreadsheet experience, reliable internet and computer access, and ability to meet high-volume annotation targets.
Key Responsibilities
- reviewing messages
- applying labels
- escalating examples
Skills & Tools
SMS, email, spreadsheets
Job Details
- Category: Data and Analytics
- Seniority: No Prior Experience Required
- Commitment: Contract
- Workplace: Remote — Mexico City, Mexico City, Mexico
- Languages: Spanish, English
About Alpha CRC Ltd.
A language services company supporting international data and artificial intelligence projects. — Industry: Consulting Services