Spanish (Mexico) Speech & Voice AI Data Labeler (Onsite)

Welocalize, Inc.; San Francisco (CA); On-site; USD 33,000 - 44,000; Full time

Benefits offered by this job

Paid vacation

Paid holidays

Paid sick leave

Medical, dental, and vision insurance

Health Savings Account

401(k) retirement plan

Employee Assistance Program

Voluntary benefits

Free meals (onsite)

Job summary

Welocalize, Inc. is seeking Data Labeling Analysts to join Welo Data in a 100% onsite role in the Bay Area or other U.S. locations.

You will execute high-volume labeling and annotation tasks for speech and voice AI, following guidelines to ensure accuracy and data integrity. The ideal candidate is bilingual with native-level Spanish (Mexico) and has strong written communication, attention to detail, and the ability to work in structured processes.

Qualifications

• Native-level fluency in Spanish (Mexico).
• Strong written communication skills and language fundamentals.
• 1 year of work experience in data labeling, annotation, or content-focused work; or a Bachelor's degree or equivalent academic qualification in a related field.
• Ability to follow detailed instructions and apply guidelines consistently.
• High attention to detail and ability to maintain accuracy in repetitive tasks.
• Comfort working in structured, process-driven environments.
• Ability to manage time effectively and maintain steady output.
• Willingness to ask questions and escalates when needed.
• Basic familiarity with AI, speech technology, or language data is a plus.

Responsibilities

• Execute high-volume data labeling and annotation tasks across speech and voice datasets.
• Follow detailed guidelines to ensure consistency, accuracy, and data integrity at scale.
• Work with audio and language data, including transcription, categorization, and tagging.
• Maintain strong throughput while meeting quality expectations.
• Escalate unclear or ambiguous cases appropriately.
• Adapt to evolving guidelines and workflows as systems and requirements change.
• Support baseline data production needs for AI training pipelines.
• Contribute to team calibrations and quality alignment sessions.

Skills

Spanish (Mexico) fluency

Written communication

Attention to detail

Follow instructions

Structured workflows

Education

1 year experience or Bachelor's in related field

Job description

Welocalize, Inc. is seeking Data Labeling Analysts to join Welo Data in a 100% onsite role in the Bay Area or other U.S. locations.

You will execute high-volume labeling and annotation tasks for speech and voice AI, following guidelines to ensure accuracy and data integrity. The ideal candidate is bilingual with native-level Spanish (Mexico) and has strong written communication, attention to detail, and the ability to work in structured processes.