Data Quality Team Lead

Welo Data • San Francisco, CA

20h • Onsite

About The Position

Welo Data is seeking a strategic leader for Project Perseus, a Data Quality Lead role that combines people leadership, quality ownership, and strategic thinking. This position involves defining how quality is measured, calibrated, and improved in one of the world’s most advanced AI evaluation environments. The successful candidate will act as a bridge between the analysts and the stakeholders, ensuring every piece of human feedback is a step toward a smarter, safer AI.

Requirements

• 5–8 years of experience in Data Quality, QA, or AI/ML operations.
• At least 2+ years specifically leading teams at scale.
• Native-level English proficiency.
• University Degree (Bachelor’s or higher).
• Proven ability to manage performance across multiple workstreams while balancing speed, quality, and shifting priorities.
• A deep interest in how human feedback shapes LLM behavior and the ability to "zoom out" to spot broad patterns in data.
• Strong judgment and the ability to make high-impact decisions when guidelines are evolving or unclear.

Nice To Haves

• Bilingual mastery in French, Italian, German, Spanish, or Brazilian Portuguese.

Responsibilities

• Lead a team of Data Quality Analysts, aligning their daily activities with global business objectives and project milestones.
• Own the end-to-end quality loop—from identifying model performance gaps to running high-level calibrations and feedback cycles.
• Translate ambiguous or evolving AI guidelines into clear, actionable direction for your team.
• Act as the primary voice of your team, partnering with technical stakeholders to align on quality standards and program expectations.
• Drive team growth through proactive coaching, performance management, and supporting the hiring of specialized linguistic talent.

Benefits

• Free breakfast, lunch, and dinner with a wide variety of cuisines.
• Micro-kitchens fully stocked with premium coffee, beverages (including La Croix), and healthy snacks.
• Access to modern, collaborative offices and rooftop nature parks (select locations).
• Comprehensive Medical, Dental, and Vision insurance.
• 401(k) and HSA.
• Free shuttles, transport benefits, and bike-to-work perks.
• 15 days of combined Paid Sick/Holiday time.
• Major holidays.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Number of Employees: 1,001-5,000 employees