Brazilian Portuguese Data Labeler

Welocalize•Boston, MA

14d•Onsite

About The Position

Welo Data is hiring detail-oriented and reliable Data Labeling Analysts to support speech and voice AI systems. This high-impact, production-focused role involves working with audio, speech, and language data to help build accurate, well-structured, and representative datasets for real-world AI systems. The role emphasizes execution, sound judgment, attention to detail, and consistency across repetitive workflows. The position is full-time, 40 hours per week, and 100% onsite. Candidates must be located in or able to commute to NYC, Seattle, Bellevue, Redmond, San Francisco, Sunnyvale, Burlingame, Los Angeles, Washington DC, or Boston. The posting also lists Bay Area, Seattle, NYC, or client-dependent locations. Applicants must be authorized to work in the U.S.; visa sponsorship is not available. Pay is $28 per hour.

Requirements

Native-level fluency in Brazilian Portuguese.
Strong written communication skills and language fundamentals.
One 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.
Must be authorized to work in the U.S.; visa sponsorship is not available.
Must be located in or able to commute to one of the listed cities.

Nice To Haves

Basic familiarity with AI, speech technology, or language data.

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 cases where they do not reflect real-world scenarios.
Contribute to improving evaluation frameworks.
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 clearly, concisely, and actionably.

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, subject to eligibility.
Health Savings Account (HSA).
401(k) retirement plan.
Employee Assistance Program.
Additional voluntary benefits, including life, accident, and critical illness coverage.
Free breakfast, lunch, and dinner at applicable onsite locations.
Stocked micro-kitchens with snacks and beverages.
Commuter benefits, including shuttles and bike-to-work options.
Unique campus features depending on location.