Speech and Voice AI Data Labeling Analyst — Spanish (Mexico)

Job overview

The Speech and Voice AI Data Labeling Analyst — Spanish (Mexico) role is onsite in Boston, MA. Pay is $28 per hour. Welo Data supports speech and voice AI systems by producing training data; the posting also identifies other eligible onsite cities, including New York City, Seattle, Bellevue, Redmond, San Francisco, Sunnyvale, Burlingame, Los Angeles, and Washington, DC. The analyst labels and annotates speech and voice datasets, applying detailed guidelines to produce accurate, consistent data at scale. The work supports AI training pipelines through transcription, categorization, tagging, quality alignment, and escalation of ambiguous cases.

What you'll do

• Perform high-volume speech and voice data labeling and annotation
• follow guidelines for accuracy and data integrity
• transcribe, categorize, and tag audio and language data
• maintain throughput and quality
• escalate ambiguous cases
• adapt to changing workflows
• and participate in team calibrations and quality alignment.

What we're looking for

Skills & competencies

data labeling analyst

boston ma

welo data

speech ai

voice ai

spanish (mexico)

audio annotation

transcription

data quality

onsite

$28/hour

40 hours per week

no visa sponsorship

paid vacation

Work arrangement

• Weekend coverage required

Benefits & perks

• Six paid vacation days, two paid company holidays, paid sick leave, medical, dental and vision insurance (eligibility applies), HSA, 401(k), Employee Assistance Program, voluntary benefits, and onsite meals and commuter perks where applicable.

Why this role

Requires native-level Spanish (Mexico) fluency and either one year of data labeling, annotation, or content-focused work experience, or a related bachelor’s degree or equivalent academic qualification. The role is 100% onsite; no visa sponsorship is available.

About the employer

Welo Data is hiring for this role. Industry: All Other Professional, Scientific, and Technical Services. Sector: 54.