Software Engineer, Applied ML (Discovery, Recommendation & Search)
Character.AI
Software Engineer, Applied ML (Discovery, Recommendation & Search) at Character.AI is a full time role based in Remote · Redwood City, California, United States (remote). The listing states pay of $200k–$300k. It was published on 18 December 2025 and was open at last check.
| Role | Software Engineer, Applied ML (Discovery, Recommendation & Search) |
|---|---|
| Company | Character.AI |
| Location | Remote · Redwood City, California, United States (remote) |
| Employment type | Full Time |
| Pay (as listed) | $200k–$300k |
| Published | 18 December 2025 |
| Status | Open at last check |
About the Role
As a Software / ML Engineer you will work cross functionally with product, data science and data platform to identify, design and implement the applied ML models and infra, ranging from the model optimization, data pipeline to model training and serving infrastructure, on one of the fastest growing native AI consumer applications on the market today. You will work on implementation of our ML backend systems to power the discovery surfaces including recommendation, ranking and search, supporting new AI generated content formats on our product while working with the team to support optimizing our existing systems.
Requirements:
- 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
Desired Experience:
- 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
You will be a good fit if you are proactive and have a “get things done” mindset. Given our current pace of growth and load on our systems, most people have had a significant impact during their first week at the company.
About Character.AI
Character.AI empowers people to connect, learn and tell stories through interactive entertainment. Over 20 million people visit Character.AI every month, using our technology to supercharge their creativity and imagination. Our platform lets users engage with tens of millions of characters, enjoy unlimited conversations, and embark on infinite adventures.
In just two years, we achieved unicorn status and were honored as Google Play's AI App of the Year—a testament to our innovative technology and visionary approach.
Join us and be a part of establishing this new entertainment paradigm while shaping the future of Consumer AI!
At Character, we value diversity and welcome applicants from all backgrounds. As an equal opportunity employer, we firmly uphold a non-discrimination policy based on race, religion, national origin, gender, sexual orientation, age, veteran status, or disability. Your unique perspectives are vital to our success.
Create your free OnJob profile to apply — we'll take you to Character.AI's application after sign-up. · Posted 18 Dec 2025.
Software Engineer, Applied ML (Discovery, Recommendation & Search) at Character.AI — questions answered
What does the Software Engineer, Applied ML (Discovery, Recommendation & Search) role at Character.AI pay?
The Software Engineer, Applied ML (Discovery, Recommendation & Search) at Character.AI listing states pay of $200k–$300k for the Remote · Redwood City, California, United States (remote) position. That figure is taken directly from the employer's own posting as published, not estimated or averaged from other roles.
Is the Software Engineer, Applied ML (Discovery, Recommendation & Search) role at Character.AI remote?
Yes — Character.AI advertises this Software Engineer, Applied ML (Discovery, Recommendation & Search) role as remote, tied to Remote · Redwood City, California, United States, and it is listed as full time work. Remote terms come from the employer's own posting, so confirm the expected working hours, timezone and any on-site days with Character.AI before you apply.
Is the Software Engineer, Applied ML (Discovery, Recommendation & Search) role at Character.AI still open?
The Software Engineer, Applied ML (Discovery, Recommendation & Search) posting at Character.AI was open at OnJob's last check of the employer's careers page, having been published on 18 December 2025. OnJob re-checks source listings on each build and marks a role closed once it disappears, but listings can close without notice, so the employer's own page is the final word.
How do you apply for the Software Engineer, Applied ML (Discovery, Recommendation & Search) role at Character.AI?
Apply to the Software Engineer, Applied ML (Discovery, Recommendation & Search) at Character.AI role through OnJob with a free profile: OnJob scores your fit against the listing, shows the skills lowering that score, and submits an ATS-ready profile to Character.AI's own application page. Creating a profile is free and needs no card.
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