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Backend AI Engineer

Brain Technologies

Salary not specified
Dec 12, 2025
San Mateo County, CA, US
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Brain Technologies is looking to solve the problem of building a new computing paradigm where generative AI becomes a real-time, on-device + cloud-coordinated intelligence that helps users accomplish tasks through natural conversation rather than apps.

Requirements

  • Strong programming skills in one or more languages (Node.js, Go, Python preferred).
  • Experience designing distributed backend systems and scalable APIs.
  • Proficiency with relational and non-relational databases (Postgres, MySQL, MongoDB, Redis, vector databases a plus).
  • Experience with containerized infrastructure (Docker, Kubernetes, GKE).
  • Experience with IaC tooling (Terraform, Ansible) and cloud platforms (GCP or AWS).
  • Familiarity with LLM-powered systems or interest in learning quickly (OpenAI APIs, RAG patterns, prompt pipelines, real-time AI services).
  • Building and operating high-traffic or real-time systems.

Responsibilities

  • Architect and implement scalable backend services that process high-volume, latency-sensitive AI inference and user-intent traffic (real-time or near-real-time request paths).
  • Design and maintain APIs used by Natural OS, the AI Phone, and cloud AI orchestration systems.
  • Work with distributed systems, streaming pipelines, vector stores, and event-driven architectures.
  • Integrate LLM-powered features safely and efficiently (rate-limiting, prompt-pipeline design, real-time personalization, caching).
  • Ensure backend reliability through automated testing, observability, and performance tuning.
  • Own cloud infrastructure used for device-to-cloud communication, LLM routing, metrics, and model-runtime services.
  • Implement and maintain Infrastructure-as-Code (Terraform, Ansible, Docker/K8s, GKE/GCP).

Other

  • A systems thinker who enjoys operating across backend, infra, and AI workflows.
  • Someone who learns rapidly and thrives in ambiguity.
  • A collaborator who communicates clearly and cares about product impact.
  • A builder excited to help launch one of the world’s first AI-native phones.
  • You love solving problems, owning outcomes, and enabling teammates to succeed.