# Project Perseus | Data Labeling Associate - Portuguese (Brazil) Speakers (Human-in-the-Loop AI)

**Company**: Welo Data
**Location**: California
**Work arrangement**: onsite
**Job type**: full-time
**Salary**: USD 34-34 per-hour-wage
**Category**: Data Science
**Industry**: Technology

**Apply**: https://jobs.lever.co/weloglobal/32423991-2b3f-4499-8905-ada86936e4f7?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_8b26bc93-f3d

## Description

Welo Data is seeking detail-oriented individuals to join their team as Data Labeling Associates, working directly with cutting-edge AI systems to evaluate outputs, identify gaps, and improve system behavior in real-world scenarios. The role involves critical thinking, data quality evaluation, and collaboration with teams.

**Project Details**

- Job Title: Data Labeling Associate

- 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: $34/hour

**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.

- 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.

**Requirements**

- Native-level Portuguese (Brazil) proficiency and a university degree (Bachelor’s or higher).

- B2 or superior level of English.

- 1–2 years of professional writing experience with strong, structured writing skills.

- Ability to apply complex writing rules and guidelines consistently.

- Strong understanding of safety considerations in GenAI data delivery, with 2+ years of relevant experience.

- Strong critical thinking and attention to detail.

- Ability to make sound judgment calls in ambiguous situations.

- Naturally curious about AI, technology, and how systems behave.

- Comfortable speaking up, asking questions, and contributing ideas.

- Strong written and verbal communication skills.

- Ability to stay consistent while working with evolving guidelines.

- Experience in data quality, QA, annotation, or analysis is helpful but not required.

**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.)

- Free Gourmet Food: Free breakfast, lunch, and dinner are provided, featuring a wide variety of cuisines in multiple cafes.

- Micro-kitchens & Snacks: Offices are stocked with free snacks and beverages, including premium coffee and La Croix.

- Unique Campus Features: Some locations include roof-top nature parks.

- Commuter Benefits: Free transport, shuttles, and sometimes bike-to-work perks.

## Skills

### Required
- Portuguese (Brazil)
- English
- writing
- critical thinking
- data quality
- GenAI data delivery
- Portuguese

### Nice to have
- QA
- annotation
- analysis

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Source: [Apply at jobs.lever.co](https://jobs.lever.co/weloglobal/32423991-2b3f-4499-8905-ada86936e4f7?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)