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Founding Product Engineer

Cotool· Engineering
Apply on company site
San Francisco, CA$150k - $300kFull-timePosted 1w ago

About the role

We’re building AI agents and the infrastructure around them to help security teams detect threats, investigate alerts, and respond. Cotool is hiring a generalist software engineer to own problems from the first customer conversation through production, focusing on agent harnesses, context/memory, evals/feedback loops, data infrastructure, and the product around the agent.

Responsibilities

  • Agent harnesses. Improve the execution loop: tool selection, state management, retries, failure recovery, and controls for safe agent actions.
  • Context layers and memory. Retrieve, assemble, and compact evidence and knowledge to keep long investigations coherent without high latency or token cost.
  • Evals and feedback loops. Create reproducible cases from real failures, inspect traces, and measure improvements.
  • Tools and data infrastructure. Provide agents with useful interfaces to security systems and fast data access via ClickHouse, APIs, and integrations.
  • The product around the agent. Build interfaces for investigating findings, editing detections, inspecting evidence, and approving actions across UI, backend, and runtime.
  • Follow traces to debugging failures, adjust context assembly/compactation, and ship fixes.

Qualifications

  • Strong software fundamentals and ability to move across unfamiliar codebases.
  • Experience with AI tools and explaining/debugging production code.
  • Ability to own substantial pieces of the product and work closely with founders.

Skills

Required:TypeScriptReactNode.js
Nice to have:Python

Benefits

  • Competitive salary and equity
  • Healthcare, dental and vision coverage
  • Unlimited token budget
Last updated Oct 14, 2026. Interested? Apply on the company site.
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About Cotool

AI Agents for Security Operations Teams

Cotool is an agentic security platform that eliminates manual and repetitive work for security teams. Today’s cybersecurity teams remain bogged down by alert fatigue, context switching, and documentation overhead. Security teams don't need more dashboards with "AI-powered insights" — they need their time back. Cotool empowers teams to build security their way. Our platform provides an AI co-pilot that automatically assembles context across tools, a no-code agent builder that transforms successful investigations into reusable automations, and automated report generation, providing comprehensive documentation in seconds. Unlike solutions that force teams to adapt to vendor workflows, Cotool puts the power of AI directly in practitioners' hands, letting them shape tools around their unique processes. Early users have already cut time spent on investigation and detection engineering by 70%.

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