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Software Engineer, Backend

Character.AI· Technical Staff - Engineering
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Hybrid (Redwood City, CA)$180k - $300kFull-timePosted 11mo ago

About the role

Backend-focused software engineer responsible for building scalable, high-performance backend systems and APIs, collaborating with designers, data scientists, and engineers to deliver robust backend solutions.

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.

Qualifications

  • 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.

Skills

Required:Backend developmentPythonPostgreSQL/MySQL/NoSQLREST & GraphQLDistributed systems / MicroservicesDocker & KubernetesSecurity best practicesCommunication & teamwork
Nice to have:GoJava

Benefits

  • Top-notch health coverage for you & your family, with majority of the premium covered
  • 401(K) contribution
  • Paid leave up to 20 weeks for new parents
  • 4 weeks of PTO
  • Daily in-office catering plus a monthly Doordash stipend
  • Monthly wellness stipend
Last updated Jul 15, 2026. Interested? Apply on the company site.
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About Character.AI

AI Chat, Reimagined–Your Words. Your World.

Chat with millions of AI Characters on the #1 AI chat app. Where will your next adventure take you?

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