Brain Co.

AI Platform Engineer, Backend (Agentic Engineering)

Brain Co.
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5 months ago

Responsibilities

  • Own the foundations for company-wide LLM usage, including cost visibility and controls, data privacy, identity and access, provider routing, and security.
  • Design sandboxing, orchestration, audit, and guardrail layers for product agents.
  • Build defenses and controls for prompt injection, scoped credentials, kill switches, multi-tenant isolation, and runaway costs.
  • Design resource, credential, token, scheduling, quota, fairness, and observability models for agent workloads.
  • Build coding-agent infrastructure that can review and ship code, automate CI, refactor codebases, and run as background workers.
  • Enable internal and deployed teams to run agents safely against existing tools with appropriate credentials, scheduling, memory, and audit capabilities.
  • Own architecture, implementation, rollout, observability, on-call, and iteration based on user feedback.
  • Partner with security, infrastructure, and product teams to make agent deployments safe by default.

Requirements

  • 5+ years of production backend systems experience.
  • Deep proficiency in at least one of Python, TypeScript, Go, or Rust.
  • Strong distributed-systems fundamentals, including consistency, idempotency, retries, failure modes, queueing, and scheduling.
  • Experience designing and operating APIs and services used by other engineers.
  • Track record building shared infrastructure, internal platforms, or developer-facing services adopted by real users.
  • Strong developer-experience and maintainability judgment, including abstraction-boundary design.
  • Ability to own the full lifecycle from design and MVP delivery through hardening and company-wide adoption.
  • Experience operating services with uptime and operational responsibility, including observability, incident response, and SLOs.
  • Cloud-native experience with Kubernetes, infrastructure-as-code, OAuth/OIDC, and secrets management.
  • Preferred experience with LLM infrastructure, agent frameworks, tool-use systems, sandboxed code execution, prompt-injection defenses, multi-tenant or regulated deployments, or open-source AI infrastructure and developer platforms.

Benefits

  • Competitive salary plus equity
  • Daily lunches
  • Commuter benefits
  • 401(k)
  • Medical, dental, and vision coverage
  • Unlimited PTO
Brain Co.

About Brain Co.

11-50 employees

We're building an AI platform and applications for the world's most important institutions. Learn more at https://brain.co/

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