Character.AI · 1 week ago
Software Engineer, Applied ML (Discovery, Recommendation & Search)
United States
Full-time
Remote
Senior Level
5+ years expCharacter.AI empowers people to connect, learn and tell stories through interactive entertainment. As a Software / ML Engineer, you will work cross functionally with product, data science, and data platform to identify, design, and implement applied ML models and infrastructure for discovery surfaces including recommendation, ranking, and search.
AppsArtificial Intelligence (AI)Foundational AIGenerative AIInformation TechnologyMobile AppsSoftware
Responsibilities
Identify, design and implement the applied ML models and infra, ranging from the model optimization, data pipeline to model training and serving infrastructure
Work on implementation of ML backend systems to power the discovery surfaces including recommendation, ranking and search
Support optimizing existing systems
Qualification
Required
B.A.S. in Computer Science or equivalent experience
5+ years of industry experience
Experience building/consuming RESTful and gRPC based web-services
Experience building and managing infrastructure in a cloud environment (GCP, AWS or Azure)
Familiar with one of the popular ML Frameworks like Pytorch, Tensorflow
Experience writing highly performant service in a modern typed language
Experience configuring and maintaining CI/CD pipelines and automated testing
Preferred
Experience with shipping intelligent features, end-to-end, and from idea to production
Experience with understanding, designing or implementing a full pipeline from data ingestion to model training
Experience with production AI/ML systems and services including optimizing GPU/TPU deployments
Experience working with vector databases or other feature storage
Company
Character.AI
Character.ai provides open-ended conversational applications in which users create characters and converse with them.
51-200 employees
H1B Sponsorship
Character.AI has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (9)
2024 (16)
2023 (6)
2022 (1)
Funding
Current Stage
Growth StageTotal Funding
$150.08MKey Investors
Andreessen Horowitz
2023-03-23Series A· $150M
2023-01-24Seed· $0.08M
Leadership Team
Karandeep Anand
CEO
Recent News
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2026-01-11
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