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Software Engineer, Applied ML (Discovery, Recommendation & Search)

Redwood City, CA · Remote · Senior

$200,000 – $300,000

Listed on CharacterAI’s own careers site. You apply with them directly — we never stand between you and the employer.

What this role is

This role involves building machine learning systems and infrastructure to power discovery, recommendation, and search features for a rapidly growing AI consumer platform. You'll work cross-functionally to implement ML models, optimize data pipelines, and deploy production systems at scale.

Our summary, not CharacterAI’s wording. The full posting is on their site.

Skills this role names

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What they ask for

Required

B.A./B.S. in Computer Science or equivalent experience
5+ years of industry experience
Experience building and consuming RESTful and gRPC web services
Experience managing infrastructure in GCP, AWS, or Azure
Proficiency with PyTorch or TensorFlow
Highly performant service development in a modern typed language
CI/CD pipeline configuration and automated testing

Nice to have

End-to-end experience shipping intelligent features from idea to production
Full data pipeline experience from ingestion through model training
Production AI/ML systems experience including GPU/TPU optimization
Vector database or feature storage experience