Platform Security [US]

BrainCo

$150K — $180K *
Information Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5-8 years experience as a software engineer with focus on security and data protection
  • Proficient in programming languages like Python, Go, or TypeScript; capable of designing services and APIs
  • Understanding of AI agent operations and orchestration frameworks
  • Knowledge of data protection principles, including PII, access control, and encryption
  • Experience in designing user-friendly systems with clear interfaces
  • Familiar with cloud platforms like AWS, GCP, or Azure for secure service deployment
  • Strong written communication skills for documentation and runbooks

Responsibilities

  • Design and create guardrail services for AI agent actions and permissions
  • Develop production code for data access controls protecting customer information
  • Build reusable libraries for integrating data protection in agent workflows
  • Implement detection and containment strategies for security vulnerabilities
  • Create audit logs and decision trails for agent data access
  • Collaborate with product and engineering teams to review agent capabilities
  • Enhance developer experience through clear APIs and integration methods
  • Define and measure the effectiveness of security guardrails

Benefits

  • Real ownership and clear scope in security infrastructure development
  • Opportunity to write production code that impacts operational security of AI agents
  • Work in a dynamic environment with significant autonomy
  • Engage in building foundational systems rather than policy advising
  • Be part of a team focused on cutting-edge AI technology and security practices
Full Job Description
About the Role:

We're looking for a Platform Security Engineer to build the guardrails that keep our AI agents safe to run on real customer data. This isn't a policy or compliance role-it's a builder role. You'll design and ship the code that constrains what an agent can access, do, and expose: scoped credentials, data access boundaries, action validation, and audit trails, so product teams can put agents in front of sensitive government, healthcare, and enterprise data with confidence.

You'll work as a software engineer embedded with our product and agent-platform teams-writing production code, not just policy-to make the secure path the only path an agent can take.

What You'll Build & Ship
  • Design and build the guardrail services that mediate actions an AI agent takes, scoped permissions, tool-call validation, and hard limits on what an agent can read, write, or send
  • Write production code for data access controls that keep customer PII and sensitive records inside approved boundaries, even when an agent is orchestrating the request
  • Build reusable guardrail libraries and SDKs so product engineers can drop data protection and permissioning into new agent workflows without reinventing it each time
  • Design detection and containment for agent-specific failure modes, prompt injection, tool misuse, data exfiltration attempts, and build automated tests and red-team harnesses to catch them before production
  • Instrument agents with tamper-evident audit logs and decision trails so every customer-data access is explainable after the fact
  • Partner with product, platform and ML engineering to review new agent capabilities before launch and flag where guardrails are missing
  • Own the developer experience for guardrails: clear APIs, documentation, and low-friction integration so engineers adopt controls instead of routing around them
  • Help define and measure guardrail effectiveness, coverage across security workflows, false positive/negative rates, mean time to detect and contain

What We're Looking For

Required
  • 5 to 8 years as a software engineer building and shipping production systems, with meaningful time spent on security, data protection, or trust & safety problems
  • Strong general-purpose programming skills (Python, Go, TypeScript, or similar), comfortable designing services and APIs other engineers depend on, not just writing scripts or config
  • Experience with or strong working knowledge of how AI agents operate in production, tool use, function calling, orchestration frameworks (LangChain, LangGraph, or similar)
  • Solid grasp of data protection fundamentals: PII handling, access control, encryption, and least privilege, and how they hold up once an agent is in the loop
  • Comfortable designing systems used by other engineers-clear interfaces, sensible defaults, predictable failure modes
  • Working cloud experience (AWS, GCP, or Azure) sufficient to build and deploy services securely
  • Comfortable across the SDLC, understands how developers work and designs guardrails that don't create friction
  • Strong written English; able to write documentation and runbooks engineers actually read

Nice to Have
  • Direct experience building guardrails or safety layers for LLM/agent systems-prompt injection defenses, content filtering, output validation
  • Background in regulated industries (healthcare, government, financial services) handling sensitive customer data
  • Familiarity with policy-as-code, secrets management, or software supply-chain security tooling
  • Prior startup experience; comfort with ambiguity and working autonomously

Why This Role

You'll have real ownership and clear scope: a defined guardrail surface across our platform, and the mandate to build. Your code will ship into production and directly shape how safely our agents operate on customer data as the platform grows. If you're a software engineer who wants to spend more time building than advising, this is that role.

To apply, send your CV and a brief note on a guardrail, safety control, or piece of security tooling you've built to [hiring contact].

Similar Jobs

More Jobs at BrainCo

  • Platform Security [US]
    $150K — $180K *
    San Francisco, CA 94112 (San Francisco County)
    Information Technology
    In-Person
  • Brand Designer, Motion
    $110K — $130K *
    San Francisco, CA 94112 (San Francisco County)
    Media
    In-Person
  • AI Deployment Lead
    $150K — $180K *
    San Francisco, CA 94112 (San Francisco County)
    Education, Government & Non-Profit
    In-Person
  • Product Manager
    $145K — $175K *
    San Francisco, CA 94112 (San Francisco County)
    Finance & Insurance
    In-Person
  • AI Platform Engineer, Agentic Engineering
    $150K — $180K *
    San Francisco, CA 94112 (San Francisco County)
    Information Technology
    In-Person

More Information Technology Jobs

Find similar Platform Security [US] jobs: