# Project Perseus | Data Labeling Associate - Portuguese (Portugal) Speakers (Human-in-the-Loop AI) at Welo Global

Project Perseus | Data Labeling Associate - Portuguese (Portugal) Speakers (Human-in-the-Loop AI) at Welo Global in California and 9 more. On-site, full-time, paying $34/hr. Posted April 22, 2026.

- Company: Welo Global
- Location: California and 9 more
- Workplace: On-site
- Job type: Full-time
- Pay: $34/hr
- Experience: 1+ year
- Posted: 2026-04-22
- Apply: https://jobs.lever.co/weloglobal/31148ca2-4e07-474e-b732-e0d7785925d7/apply
- Source: https://jobmagic.ai/jobs/project-perseus-data-labeling-associate-portuguese-portugal-speakers-human-in-th-wfnegw

## 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

## Description

### What You’ll Do

- 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, not just executing them

- 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

### What We’re Looking For

- **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.