# Project Perseus | Data Labeling Associate - Portuguese (Portugal) 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/31148ca2-4e07-474e-b732-e0d7785925d7?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/jobs/job_58546b7c-1e6

## Description

Welo Data is seeking detail-oriented individuals to join their team as Data Labeling Associates, working directly with cutting-edge AI systems.

The role involves evaluating AI model outputs, providing high-quality feedback, and identifying gaps to improve system behaviour in real-world scenarios.

**Responsibilities:**

- Evaluate AI model outputs and provide structured, high-quality feedback

- Perform audit-based reviews of data and model behaviour, 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 (Portugal) language 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 (Portugal)
- 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/31148ca2-4e07-474e-b732-e0d7785925d7?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)