Spanish Data Labeling Analyst – Onsite AI Datasets

Welocalize, Inc.; California; On-site; USD 71,635,000 - 90,922,000; Full time

Benefits offered by this job

Paid vacation

Holidays

Sick leave

Medical insurance

HSA

401(k)

Employee assistance program

Voluntary benefits

Job summary

Welocalize, Inc. is seeking a Data Labeling Analyst to support speech and voice AI systems in a 100% onsite role across the United States. You will evaluate AI model outputs, audit data, and provide precise, structured feedback to improve language datasets for real-world AI applications.

The role emphasizes attention to detail, consistency, and reliability in repetitive data-labeling tasks. Prior experience or education in related fields is valued, with the position offering full-time status and

Qualifications

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

Responsibilities

• Evaluate AI model outputs and provide structured, high-quality feedback.
• Perform audit-based reviews of data and model behavior - identifying patterns, edge cases, and failure modes.
• Apply guidelines thoughtfully - and flag when they don't reflect real-world scenarios.
• Contribute to improving evaluation frameworks, not just executing them.
• Identify trends in model performance and communicate insights clearly.
• Participate in team discussions, calibrations, and stakeholder syncs.
• Partner with leads and cross-functional teams to refine quality standards.
• Document findings in a clear, concise, and actionable way.

Skills

Spanish (Spain) fluency

Strong written communication

Data labeling experience

Education

Bachelor's degree or equivalent in related field

Job description

Welocalize, Inc. is seeking a Data Labeling Analyst to support speech and voice AI systems in a 100% onsite role across the United States. You will evaluate AI model outputs, audit data, and provide precise, structured feedback to improve language datasets for real-world AI applications.

The role emphasizes attention to detail, consistency, and reliability in repetitive data-labeling tasks. Prior experience or education in related fields is valued, with the position offering full-time status and