About Us

Sieve is a multi-modal lab curating the world's highest-quality training datasets — spanning video, audio, images, text, and 3D. We combine exabyte-scale data infrastructure and novel multimodal understanding techniques that push the frontier of foundation models. Video alone makes up 80% of internet traffic, and across modalities, data has become the enabling medium powering creativity, communication, gaming, AR/VR, and robotics. Sieve exists to solve the biggest bottleneck in the growth of these applications: high-quality training data.

We partner with top AI labs and did $XXM last quarter alone, as a team of ~30 people. We also raised our Series A from Tier 1 firms such as Matrix Partners, Swift Ventures, Y Combinator, and AI Grant.

Why Now

Sieve is one of the most capital-efficient teams in AI — roughly 30 people serving the world's leading AI labs across every major data modality. You'll join early, own problems end-to-end, and watch your work ship directly into the models defining the frontier.

About the Role

As Product Operations Lead, you'll own the day-to-day execution and scaling of Sieve's data operations platform alongside vendor partnerships. This is a deeply operational and semi-technical role. You'll manage our human workforce, build and improve QA processes, handle people sourcing and onboarding, and drive product ops initiatives that make our platform more efficient. A major part of this role is growth: you'll run campaigns and experiments to expand the platform's user base, find new channels for sourcing, and drive adoption. This role is ideal for someone who is both a builder and an optimizer, someone who can get their hands dirty with tooling while also thinking strategically about how to scale a complex operational machine.

What You'll Do

• Operate and scale Sieve's internal data ops platform, including workforce management, task assignment, and QA workflows

• Drive platform and partnerships growth: run acquisition campaigns, test new sourcing channels, and grow the user base through creative and scalable strategies

• Source, onboard, and manage a distributed human workforce for data annotation, curation, and quality review

• Build and improve QA processes to ensure data output meets the standards required by frontier AI labs

• Own product ops for the data platform. Work with engineering to ship tooling improvements, track operational metrics, and identify gaps

• Create documentation, SOPs, and training materials for operational workflows

Requirements

• Mixed technical and non-technical skillset, comfortable with data tooling, light scripting, and spreadsheet-level analysis

• Strong organizational skills and attention to detail; able to manage multiple concurrent work streams

• Growth mindset: experience running or contributing to user acquisition, sourcing campaigns, or platform growth efforts

• Bachelor's degree in CS, STEM, or equivalent practical experience

• In-person at our SF HQ

Nice to Have

• Experience managing human-in-the-loop data operations or annotation pipelines

• At least 1 year of engineering experience or strong technical fluency

• Experience as an early hire at a startup or spearheading ops at an AI lab

• Familiarity with data quality frameworks or ML data pipelines

Benefits

• 401k + Full Health Insurance

• Breakfast, Lunch, and Dinner covered and your choice of snacks

• Ubers covered home