Software Engineer, Backend
Character.AI
Software Engineer, Backend at Character.AI is a full time role based in Remote · Redwood City, California, United States (remote). The listing states pay of $180k–$300k. It was published on 8 December 2025 and was open at last check.
| Role | Software Engineer, Backend |
|---|---|
| Company | Character.AI |
| Location | Remote · Redwood City, California, United States (remote) |
| Employment type | Full Time |
| Pay (as listed) | $180k–$300k |
| Published | 8 December 2025 |
| Status | Open at last check |
About the Role
We are looking for a talented and motivated Backend Engineer to join our team. You will be responsible for building and maintaining scalable, high-performance backend systems that power our products. Collaborating with designers, data scientists, and engineers, you'll play a key role in conceptualizing, designing, and delivering robust and efficient backend solutions.
What you’ll do
- Design, develop, and maintain scalable backend services that support our applications and infrastructure.
- Implement secure and efficient APIs to support frontend applications and third-party integrations.
- Optimize system performance, reliability, and scalability through effective architecture and engineering best practices.
- Work closely with product managers, data analysts, and frontend engineers to develop backend solutions that align with business and user needs.
- Ensure high availability, fault tolerance, and performance of backend systems.
- Monitor system health, troubleshoot issues, and implement improvements to enhance efficiency and stability.
- Maintain security best practices to protect user data and system integrity.
- Stay up to date with industry trends and emerging technologies in backend development and distributed systems.
Who you are
- 5+ years of experience in backend development, building scalable and reliable applications.
- Strong proficiency in programming languages such as Python, Java, or Go. Python and Go are preferred.
- Experience with database technologies such as PostgreSQL, MySQL, or NoSQL solutions.
- Familiarity with designing and integrating APIs, including REST and GraphQL.
- Understanding of distributed systems, microservices architecture, and cloud platforms (AWS, GCP, or Azure).
- Experience with containerization and orchestration tools like Docker and Kubernetes.
- Strong problem-solving skills and the ability to optimize system performance and reliability.
- Excellent communication skills and the ability to work effectively in a collaborative environment.
Preferred Qualifications
- Experience with event-driven architectures and messaging systems (Kafka, RabbitMQ, etc.).
- Knowledge of caching strategies and performance optimization techniques.
- Experience working on large-scale, high-traffic applications.
- Familiarity with CI/CD pipelines and DevOps best practices.
- Exposure to machine learning or data-driven applications.
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 8 Dec 2025.
Software Engineer, Backend at Character.AI — questions answered
What does the Software Engineer, Backend role at Character.AI pay?
The Software Engineer, Backend at Character.AI listing states pay of $180k–$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, Backend role at Character.AI remote?
Yes — Character.AI advertises this Software Engineer, Backend 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, Backend role at Character.AI still open?
The Software Engineer, Backend posting at Character.AI was open at OnJob's last check of the employer's careers page, having been published on 8 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, Backend role at Character.AI?
Apply to the Software Engineer, Backend 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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