Portuguese (Portugal) Data Quality Analyst - California based

Welo Data; San Francisco (CA); On-site; USD 79,000 - 80,000; Full time

Benefits offered by this job

Free breakfast, lunch, and dinner

Micro-kitchens stocked with premium coffee

Comprehensive Medical, Dental, and Vision

Access to nature parks

Free shuttles and transport perks

Job summary

Welo Data is seeking a Data Quality Analyst in San Francisco to oversee data integrity in Project Perseus. You will audit the work of Data Labeling Associates, provide actionable feedback, and lead training. The ideal candidate has 2–4 years of experience in data annotation or QA, fluent in Portuguese and proficient in English. Benefits include gourmet dining, comprehensive medical plans, and modern office perks. This full-time role offers a pay rate of $38 per hour.

Qualifications

• 2–4 years in data annotation, QA, content quality, or human-in-the-loop workflows.
• Professional‑level proficiency in Portuguese (Portugal).
• B2 level or superior English for stakeholder interactions.
• Experience auditing or reviewing the work of others is essential.
• A high bar for quality and consistency in shifting guidelines.
• Familiarity with safety, compliance, or policy evaluation.

Responsibilities

• Audit the work of Data Labeling Associates, providing feedback.
• Answer complex linguistic questions and interpret guidelines.
• Lead hands-on training for new associates.
• Monitor workflow and identify blockers.
• Contribute to the evolution of project guidelines.

Skills

Data annotation

Quality assurance

Human-in-the-loop workflows

Leadership coaching

Attention to detail

Safety compliance

Education

University Degree (Bachelor’s or higher)

Job description

The Bridge Between Human Judgment and AI Excellence

Are you an experienced QA professional who knows how to mentor others and maintain a high bar for data integrity? Welo Data is seeking Data Quality Analysts for Project Perseus.

This isn't just about labeling; you are the Quality Gatekeeper. You will bridge the gap between our Data Labeling Associates (DLAs) and Team Leads, ensuring that human feedback for cutting-edge Arabic AI models is not only accurate but world‑class.

The Mission: Leading the Quality Loop

• Human-to-Human Auditing: Audit the work of DLAs, providing structured, actionable feedback to drive team‑wide improvement.
• Tactical Support: Act as the first line of defense for the team—answering complex linguistic questions and interpreting evolving guidelines.
• Onboarding & Coaching: Lead hands‑on training for new associates, helping them navigate the nuances of Arabic dialects and AI safety.
• Workflow Orchestration: Monitor queues and identify blockers, escalating risks to Team Leads before they impact the program.
• Strategic Insights: Spot high‑level patterns in both human and model behavior, contributing directly to the evolution of project guidelines.

Project Details

• Employment Type: W2 Full‑Time Employee
• Hours: 40 hours/week
• Location: California (On‑Site: San Francisco, Sunnyvale, or Burlingame)
• Pay Rate: 38 $ (per hour)

What We’re Looking For

• Experience: 2–4 years in data annotation, QA, content quality, or human-in-the-loop (HITL) workflows.
• Linguistic Mastery: Professional‑level proficiency in Portuguese (Portugal) and a University Degree (Bachelor’s or higher).
• English Fluency: B2 level or superior English to handle stakeholder syncs and technical reporting.
• Leadership Instincts: Prior experience auditing or reviewing the work of others; you know how to coach without micromanaging.
• Detail Obsession: A high bar for quality and the ability to stay consistent while guidelines shift in real‑time.
• Safety Mindset: Familiarity with safety, compliance, or policy‑driven evaluation in a GenAI context.

Premium Campus Benefits

• Gourmet Dining: Free breakfast, lunch, and dinner with a wide variety of cuisines.
• Office Perks: Micro‑kitchens stocked with premium coffee, La Croix, and healthy snacks.
• Wellness & Security: Comprehensive Medical, Dental, and Vision + 401(k) and HSA eligibility.
• Modern Campus: Access to rooftop nature parks and state‑of‑the‑art collaborative workspaces.
• Commuter Benefits: Free shuttles, transport perks, and bike‑to‑work support.