witnessai · Bay Area
Skills: React, TypeScript, Node.js, Rust, SQL, Docker, GraphQL, CI/CD
STAFF/PRINCIPAL FULLSTACK SOFTWARE ENGINEER Location: Mountain View, CA | Hybrid, 2 days/week in office ABOUT US: WitnessAI is the unified AI security and governance platform enterprises trust to govern and protect all AI activity. We provide complete, network-level visibility into every interaction including employees and autonomous agents, even in native apps where legacy tools are blind. Unlike security that relies on outdated keywords, our platform understands intent, enabling intelligent policies that stop novel threats like prompt injection while empowering productivity. WitnessAI transforms security from a bottleneck into the enabler of your AI strategy as the confidence layer for enterprise AI. THE ROLE This is a Staff/Principal role with org-wide scope. You’ll work hand in hand with the Head of Product Engineering on technical strategy and help grow the engineers around you. That work centers on our web platform, which customers rely on to see, control, and secure AI activity across their company. You’ll shape its architecture end to end, from the React UI to the Go/Rust services and data stores behind it. This is an individual contributor role, and you’ll be in good company: nobody here has stopped coding. We all ship code every day alongside our AI Agents, which feels fitting to a team whose job is keeping AI in check. You’ll lead technical work across the stack, from the UI to the ingress pipeline and raise the engineering bar through design reviews, mentoring, and the example you set in your own code. WHAT YOU'LL DO - Architecture. Design and own the end-to-end architecture of the product application: frontend, APIs, services, and data model. Write ADRs for the big decisions and see them through to production. - Build across the stack. Ship features in full-stack TypeScript (React Router), Rust and Go services. Take a feature from a rough idea to a running release. - API and data design. Define API contracts and schemas that stay stable as the platform…
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