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From the employer's careers site First seen 5 Nov 2026

Project Perseus | Speech & Voice AI Analyst - Portuguese (Brazil) Speakers

Welo Data California On-site full-time

Salary

USD 28-28 per-hour-wage

Apply on Welo Data

Description

Welo Data is seeking detail-oriented individuals to join their team as Speech & Voice AI Analysts, focusing on building datasets for speech and voice AI systems.

This high-impact production role involves working with audio, speech, and language data to ensure models are trained on accurate, well-structured, and representative inputs.

Project Details

  • Job Title: Speech & Voice AI Analyst
  • Location: Onsite (Bay Area, Seattle, NYC, or client-dependent)
  • Hours: Full-time, 40 hours per week
  • Employment Type: W2 Full-Time Employee
  • Work Authorization: Must be authorized to work in the U.S. (no visa sponsorship)
  • Pay Rate: $28/hour

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

Requirements

  • Native-level fluency in Portuguese (Brazil)
  • 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 escalate when needed
  • Basic familiarity with AI, speech technology, or language data is a plus

Benefits

  • Paid Vacation: 6 days
  • Paid Company Holidays: 2 days (Memorial Day and Labor Day)
  • Paid Sick Leave: accrued per applicable state law and company policy
  • Medical, Dental, and Vision Insurance (eligibility applies)
  • Health Savings Account (HSA)
  • 401(k) Retirement Plan
  • Employee Assistance Program
  • Additional voluntary benefits (life, accident, critical illness, etc.)

Onsite Perks:

  • Free breakfast, lunch, and dinner
  • Stocked micro-kitchens with snacks and beverages
  • Commuter benefits, including shuttles and bike-to-work options
  • Unique campus features depending on location

Skills

Required

  • Portuguese (Brazil)
  • data labeling
  • annotation
  • transcription
  • categorization
  • tagging
  • AI
  • speech technology
  • language data
  • Portuguese

Ready to apply?

You apply with the employer directly. Their original posting is here: https://jobs.lever.co/weloglobal/89050f99-2c6f-4490-a763-9ddc81c19549

Apply on Welo Data