Character.AI · 2 days ago
Software Engineer, Backend
Redwood City, CA
Full-time
Hybrid
Senior Level
5+ years expCharacter.AI empowers people to connect, learn and tell stories through interactive entertainment. They are seeking a talented Backend Engineer responsible for building and maintaining scalable, high-performance backend systems that power their products while collaborating with designers, data scientists, and engineers.
AppsArtificial Intelligence (AI)Foundational AIGenerative AIInformation TechnologyMobile AppsSoftware
Responsibilities
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
Qualification
Required
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
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
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
2026-01-20
Irish Tech News
2026-01-16
Company data provided by crunchbase