Speech & Voice AI Labeler - Brazilian Portuguese (Onsite)

Welo Data; Burlingame (CA); On-site; USD 82,000 - 101,000; Full time

Benefits offered by this job

Paid Vacation

Paid Holidays

Medical Insurance

Health Savings Account

401(k)

Employee Assistance Program

Onsite meals

Commuter benefits

Job summary

Welo Data seeks an onsite Speech & Voice AI Analyst (Portuguese, Brazil) in Burlingame, CA. The role focuses on high-volume data labeling for AI training, with strict guidelines, language data handling, and a commitment to accuracy at scale.

Candidates should have 1 year of data labeling experience or related education, strong communication, and comfort with process-driven work. This is a full-time W2 position requiring legal work authorization in the U.S.

Qualifications

• Native-level Portuguese (Brazil) fluency and strong written communication.
• 1 year of data labeling/annotation work or related degree.
• Ability to follow detailed instructions and apply guidelines consistently.
• High attention to detail and accuracy in repetitive tasks.
• Comfort with structured, process-driven environments.
• Strong time management and steady output capability.
• Willingness to ask questions and escalate when needed.
• Basic familiarity with AI, speech tech, or language data preferred.

Responsibilities

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

Skills

Portuguese (Brazil) fluency

Strong written communication

Data labeling experience

Follow guidelines

Attention to detail

Structured processes

Time management

Willingness to escalate when needed

AI/speech data familiarity

Education

Bachelor's degree or related field

Job description

Welo Data seeks an onsite Speech & Voice AI Analyst (Portuguese, Brazil) in Burlingame, CA. The role focuses on high-volume data labeling for AI training, with strict guidelines, language data handling, and a commitment to accuracy at scale.

Candidates should have 1 year of data labeling experience or related education, strong communication, and comfort with process-driven work. This is a full-time W2 position requiring legal work authorization in the U.S.