About the Role

Join an early-stage advertising technology team building real-time ad recommendations for interactive AI and gaming experiences. As a founding engineer, you will own core systems spanning data, machine learning, and production serving, helping shape how ads are selected and personalized at scale.

What You'll Do

Design and ship low-latency retrieval, ranking, and reranking systems that select campaigns and creatives while balancing advertiser performance with user experience.

Build data pipelines and feature infrastructure for continuous model training across clicks, installs, and conversions.

Develop user and context representations using engagement history, conversational signals, and session context.

Build cost-efficient serving infrastructure that delivers ads with sub-second latency.

Create generative agents that produce playable and video ad variations and feed performance signals back into recommendations.

What We're Looking For

Early-career experience, with 0 to 3 years in software engineering, machine learning, or a related area.

Experience shipping at least one machine learning or AI system to production.

Ability to build data architecture, feature pipelines, and serving infrastructure end to end, beyond model development alone.

Experience with recommendation systems, ranking, or advertising technology, and familiarity with PyTorch.

Strong backend, machine learning, and infrastructure skills, demonstrated through shipped work or active projects.

Startup experience, initiative, and comfort owning ambiguous problems; mentoring or leading other engineers is a plus.

Interest in gaming, including experience with mobile games, reward ads, or game development such as HTML5 or playable builds.

Compensation & Benefits

Base salary: $200,000 to $250,000 annually. Visa sponsorship is not available.

Location

On-site in San Francisco, California, five days per week.